Skip to main content
search

The focus of this webinar is building and managing 2D models using Oasis montaj and the GM-SYS extension.

The GM-SYS extensions are trusted by international government surveys and the exploration programs of the world’s most successful energy companies.

The webinar covers:
• Methods for building profile models
• Working with views
• Managing horizons and blocks cross multiple models
• Auto calculations
• Inversions
• Incorporating map functionality to aid 2.75D modelling
• Profile filtering and it’s importance
• Exporting horizons
• Exporting models

Overview

Speakers

Sean Goodman
Technical Analyst – Seequent

Duration

48 min

See more on demand videos

Videos

Find out more about Oasis montaj

Learn more

Video Transcript

[00:00:00.833](gentle electronic flourish)

[00:00:12.440]<v Sean Goodman>Everyone, My name is Sean Goodman</v>

[00:00:14.340]and welcome to today’s webinar.

[00:00:15.770]I’m a technical analyst based

[00:00:17.720]in Seequent, UK office in Marlow.

[00:00:21.890]The focus of today’s webinar is going to be on building

[00:00:24.780]and managing 2D models within GM-SYS.

[00:00:28.620]And so, what are we going to be covering today?

[00:00:30.270]Well, we’ll be looking at the different methods

[00:00:32.100]for building profile models, working with views,

[00:00:35.280]managing horizons and blocks across multiple models.

[00:00:38.670]We’ll look at auto calculations and inversions,

[00:00:41.400]as well as looking at some of the new functionality

[00:00:43.430]that we have in 9.8,

[00:00:44.850]in terms of incorporating maps

[00:00:46.690]into your 2.75D modeling process.

[00:00:50.200]We’ll look at the importance of filtering,

[00:00:52.690]and we’ll also look at exporting horizons and models.

[00:00:58.510]And so, just a quick look

[00:00:59.780]at some of the references for today.

[00:01:01.770]We’ve got a couple of images from two papers.

[00:01:04.950]So, by all means, feel free to find those online.

[00:01:09.640]So we’ll just jump straight into it now.

[00:01:13.390]So really the primary objective

[00:01:15.020]of today’s webinars is to demonstrate the different ways

[00:01:18.010]in which you can build models,

[00:01:19.720]respective value of each method,

[00:01:21.550]and the importance of ensuring good management

[00:01:23.810]of multiple models

[00:01:25.200]and how it can really help

[00:01:27.060]to streamline your modeling workflow.

[00:01:28.740]So just to give you a quick overview of the project itself,

[00:01:32.450]I’m just going to open a map

[00:01:35.120]and just show you the study area.

[00:01:38.040]So here we’ve got the coastline of Morocco.

[00:01:40.320]We’ll be working primarily off public domain data

[00:01:42.920]which I’ve downloaded from the Data Services menu up here.

[00:01:48.630]So we’ll be looking at the Sandwell data,

[00:01:52.390]EMAG2 data, SRTM.

[00:01:55.500]And we’ve got a number of location lines,

[00:01:59.480]which I’m just going to quickly actually show you how

[00:02:02.340]to probably the quickest way

[00:02:04.180]of making a GM-SYS profile model.

[00:02:06.800]And that’s just from Map profiles.

[00:02:08.350]So I’ll just come to GM-SYS Profile

[00:02:10.360]and select New Model From Map Profile,

[00:02:15.720]and what this does is it brings up the text box

[00:02:18.060]which essentially allows me to define a Magnetic grid,

[00:02:20.920]a Gravity grid, Typography grid.

[00:02:23.550]You can either use constant elevations for each of those,

[00:02:27.610]or you can define an elevation as well.

[00:02:29.930]So in this case, I’m using the Geoid Heights,

[00:02:32.600]I’ve defined my respective grids, the EMAG2,

[00:02:35.800]the Sandwell, and the SRTM 30.

[00:02:39.910]And, when it comes to the method

[00:02:43.130]for setting the profile coordinates,

[00:02:44.680]you can either digitize them or manually input them.

[00:02:49.040]So in this case, I will be digitizing them.

[00:02:53.600]And, if we do have horizons or gradients,

[00:02:56.080]we can go through to these menus and it will us

[00:02:59.520]to choose which horizon grids to essentially sample

[00:03:03.230]onto the model as well.

[00:03:06.710]So once I’m ready with everything in here,

[00:03:09.110]I’m going to click Finish.

[00:03:12.470]And what I can do is now enter the end points

[00:03:15.970]of the profile.

[00:03:17.970]So I’m going to go from left to right,

[00:03:22.930]and this will now create my model.

[00:03:28.300]We can put the Magnetic Field parameters

[00:03:31.210]if we wish to do so,

[00:03:33.900]and what this has done is created a model

[00:03:36.180]that’s now populated with that topography horizon.

[00:03:40.800]We’ve got the Gravity data, the Magnetic data,

[00:03:43.970]and we’ve got the Plan View window at the top there.

[00:03:47.000]So we can then go on from here

[00:03:48.830]and start to build out that model in more detail.

[00:03:53.350]But what I will now do is actually move

[00:03:55.190]into that’s another method.

[00:03:57.340]And that’s if we’re working with more models,

[00:04:00.570]then it will give us a good opportunity

[00:04:03.850]to create a database

[00:04:05.270]and then, we can build multiple models

[00:04:07.560]from a single database.

[00:04:09.990]So on this map,

[00:04:10.830]what we can see here

[00:04:11.720]is that we’ve got multiple lines actually.

[00:04:13.540]So we’ve got seven lines.

[00:04:15.540]And let’s say if we wanted to be able

[00:04:18.030]to create a database of all of those lines

[00:04:20.550]and create models for all of them at once,

[00:04:22.890]what we can actually do is just select the end points

[00:04:26.570]of the lines to get our start and then X, Y values.

[00:04:31.560]And then, we can start to build out a database

[00:04:33.900]of lines from there.

[00:04:35.910]And the first step to doing that

[00:04:37.620]is creating a coordinate database.

[00:04:41.020]Now here, we’ve got seven lines in the line list,

[00:04:45.730]and for each of them,

[00:04:46.600]we’ve got the start and end X, Y values.

[00:04:50.810]And we’ve done this by,

[00:04:52.710]this was in one of the previous Oasis montaj webinars.

[00:04:56.800]If you click on the end point of the line and press Enter,

[00:05:00.620]it will bring up the exact position of the X, Y point

[00:05:03.660]which we can just drag into a database.

[00:05:08.590]So, once we’re at this point,

[00:05:10.370]we obviously need more points in this database

[00:05:13.730]to then build from.

[00:05:15.090]So what we can go to Database Tools, Channel Tools,

[00:05:20.190]and Make a Distance Channel.

[00:05:22.690]And so, just based on the X, Ys,

[00:05:24.580]we’re going to create Distance Channel

[00:05:26.620]to the end of the line.

[00:05:28.700]And now, what we can do is re-fit this database

[00:05:31.380]to that Distance Channel.

[00:05:33.010]So we’ll go to Database Utilities,

[00:05:35.870]and Re-Fit to Distance Reference.

[00:05:38.580]So this will allow us to use that Distance Channel

[00:05:41.520]and define a new fiducial increment of a set set distance.

[00:05:46.960]And we can define the interpolation method.

[00:05:50.240]In this case,

[00:05:51.280]what I’m going to do is keep the maximum gap

[00:05:53.400]to interpolate as blank,

[00:05:55.850]so this will just populate whole line

[00:05:58.430]with fiducial increments of 300.

[00:06:05.137]And so, what that’s now done for each of those lines

[00:06:07.200]in the database, we now have points every 300 meters.

[00:06:13.800]So for this line, it’s 400 kilometers long

[00:06:16.300]so there may well be too many points

[00:06:19.010]in the Distance Channel,

[00:06:20.070]but this just shows the kind of method as to

[00:06:22.870]how you can create more points to them work from.

[00:06:26.380]So I’m going to save that database now.

[00:06:31.650]And once we’ve got those points in the database,

[00:06:33.940]what we can then do is go through and sample any other grids

[00:06:37.570]that we might want to include into our models.

[00:06:40.520]So a previous database that I’ve put together is this one.

[00:06:46.340]so I’ve got my X, Y and Distance channel

[00:06:48.270]for each of my seven profile models.

[00:06:51.220]I’ve sampled the SRTM data onto there.

[00:06:54.620]I’ve got an elevation channel,

[00:06:57.120]Free Air/Sandwell and some various horizons as well.

[00:07:01.300]Now, as we know, this is linked dynamically

[00:07:04.530]to the map as well.

[00:07:06.080]So we can see how that’s comparing

[00:07:08.738]to other map functionality.

[00:07:11.900]I’ve got a Geoid Height column in there,

[00:07:15.840]and my Depth to Moho as well.

[00:07:17.120]So this creates essentially a nice base

[00:07:20.800]for building my models from.

[00:07:23.030]And the next step

[00:07:23.890]in building those models is essentially

[00:07:26.810]to go to GM-SYS Profile

[00:07:29.270]and I’m going to build new models

[00:07:30.910]from each selected database line.

[00:07:37.790]So here, this brings up a dialog box that allows us

[00:07:41.600]to define a root name for all the models.

[00:07:44.000]So this is essentially a prefix.

[00:07:45.670]So in this case, I’m just going to go to use demo.

[00:07:48.640]You can navigate to where you want to save them,

[00:07:51.030]and again, this is very similar

[00:07:52.230]in terms of us defining a Magnetic channel, Gravity channel,

[00:07:56.870]Topography, the relevant heights,

[00:08:00.020]elevation channels associated with each.

[00:08:02.980]And in this case,

[00:08:04.070]what I’m going to do is add in some horizons,

[00:08:06.070]which I already have in my database.

[00:08:11.050]So these are elevations.

[00:08:12.500]We can define times or depths,

[00:08:15.670]whereby elevations are positive up

[00:08:17.780]and depths are positive down.

[00:08:22.710]So I’ve got five horizons in there.

[00:08:26.960]And when this will now essentially build the model

[00:08:30.430]based on the gravity magnetic data

[00:08:33.460]and the horizon data that I’ve imported,

[00:08:37.030]and we’ll create a model

[00:08:38.320]for each of those lines that I had selected.

[00:08:43.710]So what this now means is I have two models

[00:08:49.330]in here that I’ve just created.

[00:08:50.760]So line 1, profile, and line 2 profile.

[00:08:56.130]And the first thing you notice with these models

[00:08:59.010]is that what we’ve got is the horizons from

[00:09:01.590]in our depth window, from the database.

[00:09:03.800]We’ve got our gravity data, magnetic data

[00:09:07.240]within these two profiles here as well.

[00:09:09.640]So what the first step really is to do is

[00:09:12.120]to go through, and we can see that these,

[00:09:14.420]these block names are Rock 1 through 6.

[00:09:18.620]And what we’re going to do is just ensure

[00:09:21.100]that all our horizon names are named correctly

[00:09:24.690]between both of the models.

[00:09:26.770]So we’re going to go here up to Profile,

[00:09:28.850]and Manage Named Horizons.

[00:09:31.010]Now, these horizons is very easy

[00:09:32.760]to go through and name them.

[00:09:34.610]So in this one we’ve got, as we go through,

[00:09:37.600]we can see which ones are selected,

[00:09:40.850]and the same with profile 2 as well.

[00:09:42.600]Those will all be named in there.

[00:09:46.360]And so, once we’ve named our horizons, what we can then do,

[00:09:49.910]if we’re working with multiple models,

[00:09:52.100]we can go into GM-SYS Profile

[00:09:54.420]and go rename blocks in horizons.

[00:09:57.690]And what this does is let’s say, if we select here,

[00:10:01.000]we can either we can either select our active models

[00:10:04.010]or our workspace models.

[00:10:06.810]So we can come down here

[00:10:07.820]and actually go through

[00:10:08.680]and select which ones we want

[00:10:10.190]to have as our active project models.

[00:10:12.830]So in this case,

[00:10:13.920]I’ve just got the two demo lines there that are active,

[00:10:17.510]and that will then go through and read which horizons

[00:10:19.720]and blocks there are in those models.

[00:10:22.940]So we can see that what we’ve got named

[00:10:26.020]in terms of horizons, Bathymetry,

[00:10:28.430]Lower Crust, Sediments 1, Sediments 2, Upper Crust

[00:10:31.340]and a New Horizon here.

[00:10:32.930]So, as you know

[00:10:33.763]that this new horizon should be called the Moho.

[00:10:37.205]So if I select this, these two will highlight.

[00:10:41.010]And what this shows me is

[00:10:43.004]that this horizon is present in both of those models there.

[00:10:46.400]So what I can do is come and click on this pencil here

[00:10:49.160]and change that name to Moho.

[00:10:53.106]And now that’s updated,

[00:10:54.100]it will show you it in italics, in both of those,

[00:10:57.270]just to show the change that’s been made

[00:10:59.770]and I can click Apply.

[00:11:05.840]And that changes then reflected in the model itself.

[00:11:09.910]So what I can then do is go through,

[00:11:12.590]and now that I’ve got my horizons named,

[00:11:14.210]I can actually go through within here

[00:11:15.790]and rename all my blocks

[00:11:18.530]because all of those blocks will be called

[00:11:20.610]in both of those models there,

[00:11:22.530]are called Rock 1 through 6.

[00:11:25.410]Now, I know that Rock 6 reflects the mantle.

[00:11:27.950]So I can rename that and call it Mantle

[00:11:30.680]and do the same for the rest of these blocks.

[00:11:35.716](Sean continues to type)

[00:12:03.950]So once I’ve renamed all of those,

[00:12:05.470]we can see that they’re all in italics

[00:12:07.440]and both of the models are as well.

[00:12:10.310]So I’m going to press OK there

[00:12:12.080]and that will then update all of those models

[00:12:15.350]and change both the block names

[00:12:17.460]and the horizon names to create a consistent set

[00:12:20.170]across all of the models.

[00:12:22.630]Is then very easy for me to go into the individual models,

[00:12:26.110]and just go down to Edit Blocks.

[00:12:28.390]And I can then put in my various density, susceptibility,

[00:12:32.340]values that I want to be able to model from.

[00:12:35.910]So in this case,

[00:12:36.743]I’m just going to fill out some Density values.

[00:12:50.020]And this now gives me the opportunity, as we can see here,

[00:12:54.740]it’s automatically updated the calculation,

[00:12:59.350]and we can just remove that gravity are there.

[00:13:01.350]So what we can see is by managing those horizons,

[00:13:05.621]and creating them, it makes it a much quicker workflow

[00:13:09.880]in terms of updating, and managing those horizons

[00:13:14.090]and blocks between different models and quick.

[00:13:16.970]Just getting to a point

[00:13:17.910]where we can actually have a working calculated model

[00:13:22.080]much more quickly.

[00:13:29.430]And so, the next step, once we’ve got these models built,

[00:13:34.230]what we’re going to want to do is actually maybe bring

[00:13:36.560]in some backdrops.

[00:13:38.660]So the benefit of the 9.8 GM-SYS updates

[00:13:43.810]is that we’ve got greater map functionality within here.

[00:13:47.170]So we can actually bring in more backdrops

[00:13:49.660]in the Plan View window up here in the Depth window.

[00:13:53.340]And if we’re working in time,

[00:13:54.620]then we can bring backdrops into the Time window as well.

[00:13:59.920]So the way that we do this is really going back

[00:14:02.140]to Overlay, Grids and Images,

[00:14:04.700]and you can Display a Grid which might be a section,

[00:14:08.680]a georeference section grid, such as seismic line,

[00:14:12.750]or you can display an image.

[00:14:14.972]And the way that we display the images

[00:14:17.670]in the backdrops now has changed since the new updates.

[00:14:20.600]So what I’m going to do now is just show you

[00:14:22.600]how to georeference those images in Oasis montaj,

[00:14:26.300]in the Section Tools menu here,

[00:14:28.800]and then I’ll show you how to bring them

[00:14:30.180]into the GM-SYS profile window.

[00:14:32.800]So I’m just going to exit that model quickly,

[00:14:36.240]and the map as well.

[00:14:38.570]One of the things that’s changed

[00:14:39.830]in Oasis montaj 9.8 is the way that we actually load

[00:14:44.430]in these section images to GM-SYS models now.

[00:14:47.190]So rather than loading them

[00:14:50.500]into the model itself in the GM-SYS window,

[00:14:52.950]what we do is we actually georeference them

[00:14:55.440]in Oasis montaj,

[00:14:56.910]and then load them into GM-SYS, following that.

[00:15:00.380]So the first step to that is going to Section Tools here,

[00:15:04.464]and going down to Georeference Section Images.

[00:15:11.332]Now, this brings up

[00:15:12.165]the Georeference Section Images dialog box,

[00:15:14.140]and we can select an image here,

[00:15:16.090]which I’m going to select a profile 01, just as a PNG.

[00:15:21.750]What you do is then you selected the map

[00:15:23.423]that you want to reference it against,

[00:15:25.890]and you will go along and select a particular pixel

[00:15:29.020]on the profile image,

[00:15:31.200]and you will relate that to Real World Coordinates there.

[00:15:34.600]So I will select the location 1,

[00:15:38.000]which the top left corner of the image.

[00:15:41.290]Location 2 is the top right corner,

[00:15:45.560]and then the depth location.

[00:15:50.820]And so now, when I come across my Real World Coordinates,

[00:15:55.110]I will locate the Western end of the line,

[00:16:00.120]and then the Eastern end of the line.

[00:16:03.840]Now, I know that my Z profile or my depth of the section

[00:16:08.189]is from 0 to 40 kilometers.

[00:16:11.660]And as this is a meters,

[00:16:13.180]I’m going to go to 0, and -40,000.

[00:16:20.040]Now, if I want to georeference more than one image,

[00:16:22.510]I can just press the Next Image or I can just press, OK.

[00:16:32.160]So once that section image is now georeferenced,

[00:16:34.540]what we can do is just reopen that model

[00:16:36.390]and we’ll go to load that in.

[00:16:39.320]So as you can see,

[00:16:40.210]things are slightly different in 9.8. now in GM-SYS.

[00:16:43.550]We’ve got a view manager on the left-hand side,

[00:16:45.600]and this is where we essentially manage our overlays

[00:16:48.730]within the Time, Depth and Plan windows.

[00:16:51.800]So we’ve got our Plan View window here,

[00:16:54.160]the Depth window and the Time window if we’re using it.

[00:16:58.000]So what I’m going to do is actually load in that image now.

[00:17:02.320]So Overlay, Grids and Images,

[00:17:04.390]and I can either Display a Section Grid,

[00:17:07.890]which could be at seismic line that I’ve imported

[00:17:10.790]through the SEG-Y Importer, but in this case,

[00:17:13.380]I’m going to Display an Image.

[00:17:14.540]So it can be a PNG, a BIP map

[00:17:17.551]in the old versions of GM-SYS used to load.

[00:17:24.800]So this brings up this dialog box.

[00:17:26.970]So we can go and select our image.

[00:17:28.990]So the one that I just georeferenced is Profile 01

[00:17:32.460]and it gives us the Orientation

[00:17:34.730]and we can select the Target pane.

[00:17:36.890]So I know that this one’s going into my Depth Section.

[00:17:39.710]So I’ll just select that

[00:17:41.870]and that will now load in.

[00:17:44.660]And one of the great things about 9.8

[00:17:46.880]is that we can now have multiple backdrops,

[00:17:49.560]in multiple windows.

[00:17:50.640]So I’m going to go and reload another image

[00:17:54.930]over the same window there.

[00:17:56.960]So profile 01, and this is a density image.

[00:18:00.040]And again, I’m just going to put it

[00:18:01.610]in the Depth Section there, and now that’s loaded in.

[00:18:04.770]But what happens in the View Manager

[00:18:06.770]on the left-hand side here is that they both,

[00:18:08.630]you can toggle with them on and off,

[00:18:09.840]in the same way that you can toggle surfaces

[00:18:12.480]and grids on in maps.

[00:18:15.430]So this now allows us

[00:18:19.160]to essentially go through and QC our models

[00:18:21.580]with other data and other schematic images

[00:18:26.749]and QC the models that we’ve created.

[00:18:28.910]So in this one,

[00:18:29.820]in Profile 01, we’ve got a velocity section,

[00:18:33.330]just to show velocity with depth throughout the line.

[00:18:36.760]And then, the second image really just looks

[00:18:39.230]at how density varies with depth.

[00:18:41.380]But also what we can see here is that this actually shows

[00:18:44.480]that there’s lateral variation of density.

[00:18:46.710]And so we can then incorporate that

[00:18:48.510]into different iterations of our modeling process.

[00:18:54.760]So now that we’ve got our images loaded in,

[00:18:57.170]I guess then the next thing I’d like

[00:18:58.500]to cover off is working with views.

[00:19:01.680]And the reason that working with views is important is that

[00:19:05.820]when we start to make changes to our models

[00:19:08.330]and zoom into specific areas within our model,

[00:19:11.950]it makes them much easier to come back to a single point,

[00:19:15.120]a single starting point,

[00:19:17.970]and rather than messing about with zooming in and out,

[00:19:20.470]actually just having these preset views that you’ve created

[00:19:23.960]at the start of your modeling process,

[00:19:25.700]makes things much, much easier throughout.

[00:19:28.720]So in terms of this, I’ve got in this one,

[00:19:31.420]I’ve got my Depth window,

[00:19:33.310]my Gravity, Magnetics and Plan view.

[00:19:35.830]So what I can do,

[00:19:36.663]if I want to create this as a view essentially,

[00:19:39.760]now I can go to View,

[00:19:43.630]Manage Views and I can Add Current View

[00:19:47.330]and I’ll just call it Depth Grav Meg,

[00:19:52.930]and I can add that in and press OK.

[00:19:56.330]So now when I zoom into a specific area

[00:19:59.480]to try and make some variations to surfaces,

[00:20:03.040]rather than having to zoom back out again,

[00:20:05.420]and then re-zoom in, which can take a bit of time,

[00:20:10.720]I can actually just select my view

[00:20:12.860]and it will take me back to the original point.

[00:20:15.410]And so, what I can do actually is,

[00:20:17.500]if I don’t want to look at my Plan View window

[00:20:19.860]and just have my gravity and depth window,

[00:20:22.490]I can now add that as a current view.

[00:20:25.571]And that started that in as new view, number 6,

[00:20:28.300]I can then go in and manage those views and rename that.

[00:20:32.970]So this is just makes things easier for us,

[00:20:36.030]especially when I come back

[00:20:37.320]to showing you exporting these models as images and PDFs

[00:20:41.300]at the end of the webinar.

[00:20:43.430]It shows why it’s important to really just come back

[00:20:46.330]to a single view so that you can have consistency

[00:20:49.640]across your models throughout.

[00:20:51.950]So for the next session of this webinar,

[00:20:53.850]what I’m going to do is just jump out of this model,

[00:20:55.710]and into another one.

[00:21:02.513]And I’m going to focus in this section more

[00:21:04.410]on the modeling processes itself,

[00:21:05.777]and some of the various different techniques that we can use

[00:21:08.370]in terms of auto calculations,

[00:21:10.620]using various physical prompt properties, filtering,

[00:21:14.570]and why it’s important for building robust models.

[00:21:17.690]And then, I’ll look at some of the map functionality

[00:21:20.210]within the 2.75D modeling,

[00:21:23.020]and finally touch on some inversions

[00:21:25.130]before we can leave the modeling space

[00:21:27.830]and export some horizons.

[00:21:30.220]So actually what we can see on this model now

[00:21:32.420]is that there are a few mismatches

[00:21:34.670]on the Western end of the line.

[00:21:36.930]We’ve got a bit of a negative mismatch

[00:21:38.630]between the observed and calculated data.

[00:21:42.470]So this suggests that we need more mass

[00:21:44.480]in the Western end of the line

[00:21:45.780]and less mass in the Eastern end of the line.

[00:21:48.590]And when we actually compare it,

[00:21:50.480]the current model that we have

[00:21:52.360]to the density image behind it,

[00:21:55.470]we can actually see that it’s a relatively simplistic model

[00:21:58.890]in comparison to some of the natural density variation

[00:22:01.620]that we see in the image.

[00:22:03.760]So one way that we can actually start testing scenarios,

[00:22:07.320]we can just come in and important new surface and depth.

[00:22:10.620]So we can select it in the Depth of the Time window,

[00:22:13.110]and we’d just go into Append.

[00:22:14.760]And one of the things that I’m going to focus on here,

[00:22:18.070]actually is increasing this density here.

[00:22:20.210]So at the moment we have 2.85

[00:22:22.690]for the whole of the Lower Crust,

[00:22:24.610]but clearly we varied between three grams per CC,

[00:22:30.030]all the way down to 2.83.

[00:22:32.230]It really depends in terms of where we are

[00:22:34.790]in the transition zone,

[00:22:35.970]and it seems unrealistic that we would necessarily have

[00:22:38.740]just 2.85 for the whole unit.

[00:22:41.180]So I’ll split this and increase that density there.

[00:22:50.722]And what we can then do is go into this layer here,

[00:22:56.740]this new Lower Crust, and we can actually,

[00:23:01.630]we can increase the density to see what effect that has

[00:23:05.970]on the model profile here.

[00:23:07.790]So a really nice way of doing that

[00:23:09.340]at the moment where we’ve got a 2.85.

[00:23:11.370]And, actually if we click this button here,

[00:23:14.330]we can now set a range of densities

[00:23:16.770]in which we want to test.

[00:23:19.040]So I’m going to set the limit at 2.75, and Hi of 3,

[00:23:28.290]and you can vary the linear increments as well.

[00:23:31.070]So I’m just going to leave that in 0.1.

[00:23:33.670]And now what we can actually do is

[00:23:34.990]scroll along this scroll bar here,

[00:23:38.840]and we can see what effect that has on the profile

[00:23:41.950]in real time.

[00:23:44.320]So we to land on 2.94 as the model suggests,

[00:23:49.720]and then we can Accept that and press, OK.

[00:23:53.120]We can also do that with the Magnetic.

[00:23:55.470]So Susceptibility, as well as Remnants as well.

[00:23:57.680]So where you see a A/C this means Auto Calculate.

[00:24:02.420]And so, we can run those auto calculation,

[00:24:04.810]scroll bars on all of those sections.

[00:24:08.460]So I’m just going to press OK and accept those changes.

[00:24:14.100]And one of the really important things

[00:24:15.980]about building a robust profile model

[00:24:19.270]is that we really need to start filtering the data

[00:24:22.600]to understand where and which,

[00:24:24.800]what depth our anomaly mismatches relate to.

[00:24:29.210]So, one thing we can do actually is

[00:24:30.950]by just filtering this profile in here.

[00:24:34.330]So I can run maybe just a low-pass filter.

[00:24:37.400]There are a selection of other ones,

[00:24:39.430]so I’m just going to run a low pass filter of 150,000.

[00:24:45.750]And now I can turn those filtered profiles on.

[00:24:57.136]And now this, what this does,

[00:24:59.152]it shows me-

[00:25:00.843]It’s regional filter,

[00:25:03.370]which will allow me to look at the longer wavelengths

[00:25:06.000]and what might be going on with the Moho

[00:25:07.921]and that lower crustal scale, that deeper structure,

[00:25:13.670]and that can help us guide and understand what’s going on

[00:25:17.040]in terms of the transition zone.

[00:25:19.530]So that’s really important that you actually achieve a match

[00:25:22.190]at both the long wavelengths that we have here.

[00:25:25.360]And once we start filtering with the shorter wavelengths,

[00:25:28.640]actually varying those shallow structures

[00:25:30.690]to ensure that we have a good correlation

[00:25:33.730]between our observed

[00:25:34.630]and calculated data at the longer wavelengths,

[00:25:38.350]as well as the shorter wavelengths.

[00:25:41.280]So if I just turn it back to the unfiltered version,

[00:25:45.980]then I can actually start to think about

[00:25:50.590]what the sort of form of that transition zone is there.

[00:25:55.740]So we’ve obviously got an increasing density

[00:25:58.460]as we move further seaward,

[00:26:01.380]until we get to oceanic crust,

[00:26:02.960]but whereabouts is the continental oceanic boundary?

[00:26:07.480]You don’t really know that at the moment.

[00:26:10.170]We can see a gradual transition,

[00:26:11.860]but actually one of the key things

[00:26:13.460]that we’d be looking to ascertain

[00:26:15.320]from this modeling process is where the OCB is

[00:26:19.060]or what the form and structure of the OCT is?

[00:26:22.770]If it’s more a transition zone rather than a hard boundary.

[00:26:26.020]So one thing that we can actually do is look

[00:26:28.020]at the horizontal gradient

[00:26:30.570]and what we do have here is we have the horizontal gradient

[00:26:35.830]within this, and I’ve got a view just saved already.

[00:26:38.320]So Grav-Plan View,

[00:26:41.470]and what we can see is that we’ve got a pretty strong kick

[00:26:44.530]in the horizontal gradient around here,

[00:26:46.130]which kind of lines up

[00:26:48.039]with where we’re at on the transition zone

[00:26:51.720]from continental to oceanic crust.

[00:26:55.120]I guess the benefit

[00:26:56.457]of being able to have these grids,

[00:26:58.580]such as the horizontal gradient

[00:26:59.750]within the GM-SYS planned view window now.

[00:27:01.920]It means that we don’t have to keep switching

[00:27:04.470]between the map and the model in order to be able

[00:27:07.630]to make these correlations between the maps

[00:27:10.700]and what’s going on at depth in our sections.

[00:27:14.530]So I guess some of the questions

[00:27:16.480]that you can start asking yourself,

[00:27:17.670]based on this is, is it a very prominent anomaly?

[00:27:21.520]The horizontal gradient anomaly there,

[00:27:24.250]or is it more protracted series of low amplitude anomalies

[00:27:27.570]across further distance?

[00:27:31.260]So this might help us to understand what the nature

[00:27:34.810]of the transition zone is,

[00:27:37.400]and whether it’s basically a hard boundary

[00:27:40.070]from continental to oceanic crust

[00:27:42.110]or is there a bit of a transition zone

[00:27:46.110]as we gradually increased density towards there

[00:27:48.450]or perhaps there could be,

[00:27:50.030]if we start looking at our velocity profile,

[00:27:53.060]there could be some high velocity,

[00:27:55.270]high density under plating or something like that.

[00:27:57.490]So this really, by combining these multiple section images

[00:28:01.610]and the grids in the Plan View window,

[00:28:04.100]then what we’re able to do

[00:28:05.310]is actually guide our interpretations

[00:28:07.520]and come up with a series of different scenarios

[00:28:10.770]that we can test essentially to gain some understanding

[00:28:15.020]of what’s going on within the crust at depth.

[00:28:19.050]Now, where we’ve kind of focused so far on looking

[00:28:21.390]at the longer wavelength residual errors in the profiles,

[00:28:24.810]so here and here,

[00:28:27.680]what we can actually do is also use high-pass filtering

[00:28:31.010]to understand what’s perhaps going on

[00:28:33.320]in the shallower sections

[00:28:34.580]and therefore analyze some of these shorter wavelength,

[00:28:38.990]higher frequency anomalies

[00:28:41.820]that might be due to features within the shallower section.

[00:28:46.630]So what I’m going to do is I’m going to focus

[00:28:48.370]on this particular anomaly.

[00:28:50.620]As we can see,

[00:28:51.453]it starts to look more high frequency

[00:28:54.231]compared to the anomalies

[00:28:56.450]and the mismatches at either end of the line.

[00:28:59.180]And so, what I’m wondering is that perhaps this mismatch

[00:29:03.380]could be associated with something that’s going on shallower

[00:29:06.560]in the section.

[00:29:07.890]So rather than essentially a regional low-pass filter,

[00:29:11.410]I’m actually going to change it to a high pass filter now.

[00:29:13.990]So I was on low passed before,

[00:29:16.530]so I’m just going to switch over to High pass

[00:29:19.090]and now take the Observed gravity off

[00:29:23.370]and input the filtered data.

[00:29:28.250]And what we can see is

[00:29:29.250]that we do have quite a distinct gravity low

[00:29:34.180]just in this region here.

[00:29:36.440]It does seem to coincide

[00:29:38.130]with the fact that it’s on transition zone,

[00:29:40.890]and we do have a fair bit of structure here

[00:29:43.561]in the shallower section there.

[00:29:46.520]So my thoughts are that perhaps there’s something going on

[00:29:49.880]in the shallower section of the model

[00:29:52.330]that we aren’t taking account of currently.

[00:29:54.890]And this,

[00:29:55.723]given that it’s a 400 kilometer regional scale line,

[00:29:58.700]it is quite a simplistic view of the geology.

[00:30:01.890]So when you start to high-pass filter,

[00:30:04.470]you will start to see some errors creep in.

[00:30:07.510]Now, what we actually have the benefit of is

[00:30:11.120]with our Plan View window,

[00:30:12.800]we can bring in these different maps.

[00:30:14.900]And so, we can actually correlate

[00:30:16.300]and see whether there’s anything on

[00:30:18.380]in our known geology

[00:30:19.910]that we can relate back to that anomaly.

[00:30:22.630]So I know that this is a region of salt basins.

[00:30:26.364]It’s widely documented.

[00:30:28.800]So I’ve got a georeferenced salt basins map,

[00:30:33.110]and actually this shows the the location of the line going

[00:30:36.170]through the map.

[00:30:37.003]And, actually what we can see here is that over this area,

[00:30:39.780]we do have a salt basin in here

[00:30:42.920]and these are individual salt domes that have been mapped.

[00:30:46.990]And so, what this might be telling us

[00:30:48.870]is that this particular low,

[00:30:52.110]and therefore this mismatch might be associated

[00:30:54.900]with the fact that we don’t have any salt within this model.

[00:30:58.480]So at the moment we just have 2.72 for Upper Crust,

[00:31:02.120]and then we jump into sediments of 2.48, 2.35 and then 2.2.

[00:31:08.120]So we have quite a lot of,

[00:31:11.553]there’s certainly room for error in this model,

[00:31:14.470]given that we don’t have any of this widely known salt

[00:31:18.800]that’s reflected in the model.

[00:31:21.480]So that again, that shows the power

[00:31:23.190]of being able to bring in your maps

[00:31:26.690]and your grids into this Plan View window,

[00:31:29.030]and just ensure that you are integrating all of your data

[00:31:33.010]into your modeling process.

[00:31:37.590]So not only can we incorporate our map and grid imagery

[00:31:40.960]in the Plan View window,

[00:31:42.450]to help guide our interpretation and understand the depth

[00:31:46.940]at which our anomaly mismatches really are sourced from,

[00:31:52.780]we can actually also use it to guide our 2.75D modeling.

[00:31:57.630]So the assumption in profile modeling

[00:31:59.210]is that all blocks extend to infinity along strike

[00:32:02.030]in the Y orientation.

[00:32:03.110]So in and out of the page,

[00:32:05.160]and in this instance,

[00:32:06.770]if we’re talking about a localized body such salt,

[00:32:09.430]it might be geologically unrealistic.

[00:32:11.970]So by integrating that known geological information

[00:32:14.610]from our maps and grids,

[00:32:16.070]it can help us to define how far our localized body extends

[00:32:19.600]in the Y orientation away from the profile line.

[00:32:23.300]And, therefore this helps us

[00:32:24.760]to create a more geologically feasible and robust model.

[00:32:28.440]So, in this example,

[00:32:29.910]what I’ll do is I’ll just-

[00:32:31.470]In order to create a localized 2.5D body,

[00:32:36.140]I’ve just selected this one here,

[00:32:37.570]which correlates with the anomaly low.

[00:32:41.000]And what I can now do is just click this box.

[00:32:43.130]It says 2.75D and this creates two blocks.

[00:32:47.380]So a Y positive and a Y negative block.

[00:32:51.280]And what we can do is we can come in here

[00:32:52.800]and define the length of this block.

[00:32:55.740]So I’m going to call it, let’s say 10,000 meters.

[00:33:04.083]So it’s positive and negative.

[00:33:08.537]So you input that for both and press OK to that.

[00:33:14.080]And what this now actually does, if we change our plan,

[00:33:17.590]new depth to essentially cut through this body now,

[00:33:21.750]what we can actually see is that this body here

[00:33:27.520]and this body here both have 2.75D limits.

[00:33:31.580]So we can actually go in

[00:33:32.900]and change that based on what we can see

[00:33:35.960]within those maps there,

[00:33:39.054]and that will change the nature

[00:33:42.590]of that anomaly there as well.

[00:33:45.320]And so, we can see how that varies,

[00:33:47.430]if we move that Plan View again,

[00:33:48.850]then we actually see more of the body there.

[00:33:52.980]And so, in this example, it’s obviously more regional scale.

[00:33:56.238]So we’re not going to be looking at individual salt bodies,

[00:33:58.900]but if we had a more focused

[00:34:00.920]and more localized body that we wanted to analyze

[00:34:03.990]and model in 2.75D,

[00:34:06.350]then this incorporation

[00:34:07.760]of the map functionality really helps us to do that

[00:34:10.180]in a more accurate way.

[00:34:12.700]So what I’ve shown you so far has really been

[00:34:14.590]around the concept of forward modeling.

[00:34:16.410]So that’s changed where the interpreter

[00:34:18.760]really makes alterations to the model geometries

[00:34:21.160]and physical properties to attain a fit

[00:34:23.620]between the observed and calculated anomaly data.

[00:34:26.490]Now, what we can also do is run a 2D inversion

[00:34:29.100]which allows us to define certain points and parameters,

[00:34:33.260]which GM-SYS will then alter

[00:34:35.050]to achieve a correlation between the observed

[00:34:37.170]and calculated profiles.

[00:34:39.250]So I’m just going to remove this filtered data now,

[00:34:42.630]and I’m going to replace it

[00:34:43.630]with the original, observed data.

[00:34:49.020]So now, what we can do

[00:34:49.920]is actually just run a quick 2D inversion

[00:34:51.950]on some various aspects of these models.

[00:34:54.230]So it might be varying individual points,

[00:34:57.220]in terms of structure,

[00:34:58.200]or we might vary the Susceptibility or Density

[00:35:02.710]within some of these layers.

[00:35:04.820]So I’m going to come to Action and Invert.

[00:35:09.845]And so, what this now allows us to do

[00:35:11.050]is select what type of inversion we’re going to run.

[00:35:13.300]So in this respect, I’m going to change Density.

[00:35:17.060]And then, in density and susceptibility and inversions,

[00:35:20.210]You click on a specific layer.

[00:35:21.900]So here I’m going to select that salt body

[00:35:24.150]that we just looked at.

[00:35:27.050]So we’re going to keep auto DC Level ticked,

[00:35:29.320]and we can add in some constraints if we want to.

[00:35:32.330]So if we select this box and then click Constraints,

[00:35:35.010]we can essentially define a maximum change in X and Z.

[00:35:40.390]If we’re invert on those,

[00:35:43.080]and we can also change the gravity ratio,

[00:35:45.360]if we’re doing a combined gravity and magnetic conversion.

[00:35:48.170]So for this one,

[00:35:49.250]I’m just going to press GO and see what happens.

[00:35:51.570]So as you can see, we’ve had a bit of a change there.

[00:35:54.150]The dashed line shows where the old calculated profile was,

[00:35:58.770]and this is now the new form based

[00:36:01.130]on that inversion results.

[00:36:02.210]So we can see a change in gravity here of 1.839.

[00:36:07.090]And so, we can keep doing a number of steps here just

[00:36:10.440]to see what fit we get.

[00:36:12.600]In this one,

[00:36:13.433]it’s not going anywhere cause it’s been pushed

[00:36:14.950]as far as it can go.

[00:36:18.350]So I’m going to undo those,

[00:36:20.660]but I’m going to select Accept on this one.

[00:36:25.120]And now, what I can do is actually

[00:36:26.610]just quickly move the label

[00:36:30.210]Each time you run an inversion,

[00:36:32.610]it will update this density value in the labels there.

[00:36:35.200]So what I can see is that isn’t a realistic value there.

[00:36:39.810]So I’m going to change that back

[00:36:44.910]to 2.16, and now, again, this is back to being where it was,

[00:36:51.870]but that shows that-

[00:36:55.110]So what that shows is really two things.

[00:36:57.490]Actually, I can run multiple iterations of an inversion

[00:37:00.125]to get to a point at which I’m happy with the density

[00:37:04.100]or susceptibility or the result of the inversion,

[00:37:07.290]but it also shows the importance

[00:37:09.120]of not just letting the program run

[00:37:12.570]with the inversion by itself,

[00:37:13.670]but actually QCing the inversion

[00:37:15.360]because what it might do is create something

[00:37:18.100]that’s not geologically feasible.

[00:37:20.160]So whilst it’s good

[00:37:21.730]for testing different scenarios quite quickly,

[00:37:25.320]you’d certainly do need

[00:37:26.420]to make sure that your QCing what it produces there as well.

[00:37:30.670]So for the next step of the inversion workflow,

[00:37:34.420]I’m going to look at varying the points themselves.

[00:37:38.680]So what we can do is we’re able

[00:37:40.320]to select a number of points.

[00:37:41.890]So in this example,

[00:37:42.880]I’ll focus in this section of the model

[00:37:45.300]and what we can do is select a number of points,

[00:37:47.730]which we will allow the inversion to move for us.

[00:37:51.500]And the remaining points would essentially be locked

[00:37:53.540]in their current positions.

[00:37:54.560]So we can add in extra points.

[00:37:56.310]We can remove points prior to inversion

[00:37:58.830]and that’s going to help us decide

[00:38:01.160]on the level of detail that we require.

[00:38:03.470]So, if it’s a very regional scale inversion,

[00:38:05.660]we might have very few points.

[00:38:07.370]But if we need quite complex geometries

[00:38:10.300]to be taken into account,

[00:38:12.070]then we might be able to add in some extra points

[00:38:15.330]and then select those points to then be moved

[00:38:18.490]or free or fixed in the inversion.

[00:38:22.500]So, if you’ve got a more targeted area

[00:38:24.290]that you need to model,

[00:38:25.520]this model can actually, in fact,

[00:38:27.360]be much faster than manually editing those individual points

[00:38:30.510]in a forward modeling workflow.

[00:38:32.860]So I’m just going to jump back into that invert.

[00:38:36.260]So here, we’ve got Free/ Fix in Z.

[00:38:41.640]I’m going to keep also Auto DC Level is ticked,

[00:38:44.910]and my Constraints,

[00:38:45.760]I’m going to allow maximum of 2 km movement

[00:38:49.267]in the Z orientation.

[00:38:50.750]So now, we can go through and select the points

[00:38:52.720]that I want to be free.

[00:38:54.390]So these can move during the inversion process.

[00:38:59.190]And then, I’m just going to press GO

[00:39:00.720]and see how this changes.

[00:39:03.060]So we can see that obviously,

[00:39:04.760]with the negative mismatch that we’ve gotten the calculated

[00:39:07.820]and observed data,

[00:39:09.100]is trying to increase or shallow this horizon here.

[00:39:14.290]So I’m going to press Next Step

[00:39:16.220]and this will just keep making changes

[00:39:18.200]to the inversion until

[00:39:20.622]to the surface, until such a point that we get a better fit.

[00:39:27.230]So what I could actually now do is press Accept on this.

[00:39:30.740]I could clear all of those points,

[00:39:33.250]and I could change just this point and this point,

[00:39:36.940]and I could actually add an a point as well,

[00:39:40.610]to add in some more detail to the inversion.

[00:39:46.860]And I can press GO again on that.

[00:39:49.130]So that can then localize that.

[00:39:50.950]And whilst that’s perhaps not a very realistic,

[00:39:53.960]we’d probably actually have more of a combination

[00:39:56.470]of varying the surfaces, as well as the density

[00:40:00.730]within that layer as well.

[00:40:02.460]So I’m going to just quickly undo all of those,

[00:40:08.860]and just press Clear All

[00:40:10.010]and that removes all of those free points

[00:40:14.670]and I’m just going to come out of that now.

[00:40:16.140]So I’m actually going to move those points back,

[00:40:19.760]so I can select a group of points.

[00:40:22.000]So mark points in a box

[00:40:24.237]and I can select all of those points

[00:40:27.860]and drag those back down to where they were,

[00:40:30.670]prior to the inversion.

[00:40:33.180]So I’ll just clear those now.

[00:40:35.670]So that’s everything

[00:40:36.503]in terms of just running through the features

[00:40:39.680]that can assist you in your interpretation workflow.

[00:40:44.000]And now, what I’m going to go back

[00:40:45.430]and focus on is just getting to that export stage

[00:40:48.160]in terms of exporting models, as images and PDFs,

[00:40:50.860]if you want to put them into a report

[00:40:52.760]or as if you need to export horizons,

[00:40:55.490]which you want to grid up

[00:40:56.530]and put into other interpretation packages as well.

[00:41:00.470]So I’m going to quickly save this model.

[00:41:04.910]And this really, when you start to get to this stage,

[00:41:08.520]we’re talking about the importance of views again.

[00:41:11.130]So, obviously, we’re working on the Gravity,

[00:41:13.860]Plan View and Depth windows,

[00:41:15.410]but if I wanted to, say export something

[00:41:18.440]that’s just the Gravity and the Magnetic window,

[00:41:20.520]or one of my previously saved views,

[00:41:23.790]I can then go back to Gravity and Depth.

[00:41:26.340]And this will take me back

[00:41:27.410]to that specific view that I would like to export as well.

[00:41:32.090]So if we get to a point where we’ve got an image

[00:41:34.510]that we’re happy with,

[00:41:36.020]we can go to the print button

[00:41:39.130]and this will open up the page layout menu.

[00:41:44.170]And so we can either print to PDF,

[00:41:47.500]or we can do Raster Drive for GM-SYS.

[00:41:49.950]This will allow us to create a PNG, BIP map,

[00:41:53.280]any other image file.

[00:41:57.440]And then we can go into-

[00:41:59.500]You can obviously set up your printer,

[00:42:01.170]but we can set up the page layout.

[00:42:03.180]So in this example, we’ve got sort of the time window

[00:42:05.610]at the bottom, Depth window, Gravity, Magnetic

[00:42:08.810]and Plan View,

[00:42:09.920]and we’ve got various title boxes around the edge.

[00:42:12.760]So I’ve been working in the depth window this whole time.

[00:42:15.440]So actually when it comes to printing or exporting images,

[00:42:18.960]I don’t need this time window.

[00:42:20.540]So what I can do is go into my page setup layout,

[00:42:25.080]and I can go to Time and just put 0 in there

[00:42:28.380]and that will remove that pane from there now.

[00:42:31.720]You can then go through and very the aspect ratio.

[00:42:34.590]You can vary the sizes of all your windows.

[00:42:39.120]You can vary the layout, in terms of the margins,

[00:42:42.810]so the top and left margins.

[00:42:45.730]So, if I wanted to increase the size of my Depth windows,

[00:42:48.750]so I know it goes down to 40 km,

[00:42:51.410]and I can increase my vertical saturation,

[00:42:54.160]Let’s say to 6,

[00:42:55.120]to make that a much larger window on the page.

[00:43:00.120]I can do the same for the Gravity and Magnetic windows.

[00:43:04.720]So at 1.5 inches.

[00:43:11.050]And I might want to keep my Plan View windows

[00:43:12.910]smaller than those.

[00:43:13.830]So if I want to keep it as 1 inch,

[00:43:15.610]then that’s fine.

[00:43:16.443]So I can then press OK on that.

[00:43:17.900]And that’s my page set up for export.

[00:43:21.210]So, what I can then do,

[00:43:22.420]and if I want to keep that page set up exactly the same,

[00:43:27.420]if I have to produce a series of these images

[00:43:30.050]for reports or publication,

[00:43:32.500]what I can actually do is save that config here.

[00:43:37.140]And so, I can just save it within the project directory

[00:43:40.880]and any other time,

[00:43:42.180]when I come back in here,

[00:43:43.220]I can just, again, load it in from there.

[00:43:46.140]And then once I press Print,

[00:43:47.690]that would allow me to export as PNGs, BIP maps, GeoTIFFs,

[00:43:52.110]any of those images as well.

[00:43:55.270]And the final aspect of today’s talk really is going

[00:43:59.090]to come back to exporting horizons in an efficient way.

[00:44:03.490]So this really,

[00:44:04.770]it jumps back into the importance of managing our horizons

[00:44:08.550]and blocks efficiently,

[00:44:10.190]at the start of the modeling process,

[00:44:11.970]which now once we get to this point of export,

[00:44:14.770]it makes our lives a lot easier.

[00:44:16.950]So what I can do is go to GM-SYS Profile.

[00:44:19.910]I can select my active models.

[00:44:21.900]So in this, I’m going to go with these seven models.

[00:44:25.860]So these are my project models.

[00:44:27.570]I’m going to add these to the active models list,

[00:44:31.310]and that will now validate them,

[00:44:33.600]and understand which horizons are in which models,

[00:44:36.250]in which blocks there are as well.

[00:44:39.050]And then once we’ve exported those,

[00:44:40.340]we can jump into GM-SYS Profile,

[00:44:41.950]and go to Extract Horizons to Database.

[00:44:45.440]And so, this will now create us a horizon list

[00:44:47.960]based on the horizons that are active in each of our models.

[00:44:51.780]And, because we’ve got a seven models,

[00:44:53.410]that can take a little bit of time.

[00:44:56.810]And so, what we can now do,

[00:44:58.394]we can have a look at what horizons we have

[00:45:00.490]within our list there.

[00:45:03.370]We can select our output database name.

[00:45:05.250]So I’m just going to call it Demo

[00:45:07.860]and we can decide where our sampling location is,

[00:45:12.050]so it can be modeled profiles.

[00:45:13.870]So each of these points along the line.

[00:45:17.240]We can call it the Gravity Stations

[00:45:19.450]or the Magnetic Stations.

[00:45:20.700]So in this example, it’s 300 meters

[00:45:22.770]from the database that we originally made them from.

[00:45:30.320]And we can also look at the sample interval

[00:45:32.620]if we want specify a specific sampling tool.

[00:45:35.650]So in this example,

[00:45:36.720]I’m just going to export the Moho and the Lower Crust

[00:45:39.400]and add that to what I already have in there

[00:45:41.130]for the Upper Crust.

[00:45:42.820]And then I can just press, OK.

[00:45:46.830]And this will now generate the new horizons database

[00:45:50.190]for those seven lines.

[00:45:56.261]And again, it just takes a little bit of time

[00:45:57.930]’cause there’s seven lines to extract from

[00:46:00.210]and now this is the the database that it’s just exported.

[00:46:06.380]So as we can see, we’ve got the seven lines in here,

[00:46:10.581]all named based on the models.

[00:46:12.100]We’ve got the X, the Y,

[00:46:13.430]and then all of our horizons that we exported as well.

[00:46:17.180]And so, now what we can actually do

[00:46:18.510]is we can look to extract these

[00:46:20.860]if we need it in a text file or anything like that.

[00:46:22.740]So we can go to Database Export, Geosoft X, Y, Z

[00:46:26.540]and just name it, whatever we need to name it.

[00:46:29.080]We can also grid up each

[00:46:30.620]of those horizons via minimum curvature,

[00:46:33.950]and then once we have those in a grid,

[00:46:35.700]we can export those to any file format that we need to,

[00:46:38.590]such as Landmarks Z-map,

[00:46:40.460]which might allow you to put it

[00:46:41.810]into another interpretation package.

[00:46:45.260]So that’s everything we’re going to cover off today.

[00:46:47.180]We’ve covered off quite a lot in the last 50 minutes.

[00:46:49.430]So we’ve looked at the different methods

[00:46:51.550]for building profile models,

[00:46:53.250]the importance of working with views

[00:46:55.040]and managing your horizons

[00:46:57.110]and blocks across multiple models,

[00:46:59.750]and how that can really help you

[00:47:01.010]when it comes into exporting models

[00:47:03.030]at the end of your interpretation process.

[00:47:06.340]We’ve looked at auto calculations,

[00:47:08.250]inversions, the new functionality in 9.8,

[00:47:11.560]in terms of incorporating map functionality

[00:47:14.220]to aid your 2.75D modeling.

[00:47:16.650]And we’ve also looked at the importance of filtering

[00:47:19.850]throughout the modeling process as well.

[00:47:22.700]Now, just before we finish up today’s webinar,

[00:47:24.650]I just wanted to mention the variety

[00:47:26.520]of learning enrichment resources that we’ve been developing

[00:47:29.050]over the last few months.

[00:47:31.020]You can find out a bit more information

[00:47:32.900]about Oasis montaj and GM-SYS on these two solution pages

[00:47:37.180]and learn a bit more about how they can help you reduce risk

[00:47:40.060]and uncertainty in your workflows.

[00:47:42.770]We also have a variety of virtual training events

[00:47:45.180]that you can participate in,

[00:47:46.590]as well as self-serve learning pathways,

[00:47:49.290]which can be accessed in myseequent, Seequent IDs.

[00:47:54.200]You’ll also find the self-serve store

[00:47:55.810]where you can purchase Leapfrog and VOXI products.

[00:47:58.450]And for any support related queries,

[00:48:00.170]you can either get in touch with our great support team

[00:48:02.550]or head to the, myseequent support page,

[00:48:05.030]which holds over 5,000 knowledge base articles

[00:48:07.590]to help you with your everyday Oasis montaj workflows.

[00:48:11.720]So that’s all for today, everyone.

[00:48:13.040]And I’d like to thank you all for taking the time to tune in

[00:48:15.680]and hear more about our updates and workflows.

[00:48:18.280]So have a great day.

Free training and support

Grow your geoscience knowledge, connect with peers, and refresh your skills

Seequent Community

Discover new opportunities, connect with peers, and share insights and best practices with others in your field.

Visit Seequent Community

Learning Centre

Get started fast or upskill whilst working with our onboarding and advanced free eLearning courses.

Visit Seequent Learning Centre

Seequent Help

Find answers to your technical questions and get the most out of your product, with our in-depth product help information.

Visit Seequent Help