Draw Stratigraphy Using CorelDRAW

Basin Analysis 2011-GE-56
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Figure 1.1 Corel Draw
LAB#01
INTRODUCTION TO BASIN ANALYSIS
1. STATEMENT:
To draw the stratigraphic sequence of different wells by using corel draw
2. SCOPE:
- Using corel draw we correlate the stratigraphy and find the relative ages of different
lithologies.
- The data can be saved in a large no. of extensions.
3. THEORY:
3.1. COREL DRAW:
Corel Corporation developed and released a software program called Corel draw,
a vector graphics editor. The software is more of a graphics suite than just a single, simple
program, providing many features for users to edit graphics, including contrast adjustment, color
balancing, adding special effects like borders to images, and it is capable of working with
multiple layers and multiple pages.
3.2. HISTORY OF COREL DRAW:
In 1987, Corel hired software engineers Michel Bouillon and Pat Beirne to develop a vector-
based illustration program to bundle with their desktop publishing systems. That program,
CorelDraw, was initially released in 1989. CorelDraw 1.x and 2.x runs under Windows 2.x and

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3.0. CorelDraw 3.0 came into its own with Microsoft's release of Windows 3.1. The inclusion
of TrueType in Windows 3.1 transformed CorelDraw into a serious illustration program capable
of using system-installed outline fonts without requiring third-party software such as Adobe
Type Manager; paired with a photo editing program (Corel Photo-Paint), a font manager and
several other pieces of software, it was also part of the first all-in-one graphics suite.
3.3. FEATURES OF COREL DRAW:
EXPLANATION OF TOOLS:
- PICK TOOL:
Toll it serves to select or select objects
- SHAPE TOOL:
This tool serves to edit a line or object to the manipulation point
- CROP TOOL:
This tool serves to remove the unwanted part on the object
- ZOOM TOOL:
This tool serves to alter the document window corel we are open

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- FREEHAND TOOL:
This tool serves to draw a curve (a curve) and a straight line segment. Freehand may be:
Point line tool: This tool serves to draw a straight line from one point to one point to another
Bezier tool: this tool serves to draw a curved line segment at a time
- SMART FILL TOOL:
This tool serves to make objects from overlapping areas
- RECTANGLE TOOL:
This tool serves to draw rectangles or squares simply by drag and click your mouse
- ELLIPSE TOOL:
This tool serves to draw an ellipse and a circle just by drag and click your mouse
- POLYGON TOOL:
This tool serves to draw a square shape a lot, just by drag and click the mouse
- BASIC SHAPES TOOL:
This tool serves to accelerate the process of drawing a triangle, circle, cylinder, heart, and
many other forms
- TEXT TOOL:
This tool is used to make paper in the drawing area either artistic or description
- TABLE TOOL:
This tool serves to create a table, select and edit table
- BLEND TOOL:
This tool serves to unify the object by creating a lot of objects and colors are housed in the
center
4. STRATIGRAPHIC CORRELATION:
The method of using similarities between geologic units to extend information about geologic
sequences over large geographic areas is called correlation. In lithologic correlation, a unit is
recognized by its lithology (rock type) or a sequence of lithologies.

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Figure 1.2 Correlation of US Wells
4.1. TYPES OF CORRELATION:
A) TIME CORRELATION:
Matching of rocks deposited at the same time (e.g. Mesozoic sedimentary rocks in the U.S. with
Mesozoic sedimentary rocks in Mexico). Time correlation requires the use of index fossils to
demonstrate rocks were deposited at the same time.
B) LITHOLOGIC CORRELATION:
Matching rocks of the same character from one place to another. Usually not as accurate as time
correlation, but easier. Doesn't require index fossils, but lithologic correlation may not correlate
rocks deposited at the same time.
4.2. IMPORTANCE OF CORRELATION:
Correlation tells us about:
 Sea level changes:
- Transgression
- Regression
 Extend of the reservoir
5. APPLICATIONS OF COREL DRAW IN GEOLOGICAL ENGINEERING:
Corel draw can be used in geological engineering for:
- Drawing the stratigraphy of different wells
- Correlation of different stratigraphic beds
- Finding Reservoir and source rock
- Elevation and depression of an area
- 3D Model of an area
REFRENCES:
http://en.wikipedia.org/wiki/CorelDRAW
http://www.computerhope.com/jargon/c/coreldraw.htm
http://homepage.usask.ca/~mjr347/prog/geoe118/geoe118.040.html
http://petrowiki.org/Gamma_ray_logs

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http://tool-coreldraw.blogspot.com/2013/03/name-and-function-toolbox-coreldraw.html
LAB#02
TO DRAW THE STRTIGRAPHIC SEQUENCE OF DIFFERENT WELLS BY USING
COREL DRAW
PROCEDURE FOR DRAWING:
- Select the scale
- Make columns and rows by using gridlines
- Make rectangles in each box
- Give the name symbol, name and description to the columns respectively by using text
tool
- Draw the symbols of different rocks according to their standard symbols
- Write the descriptions of symbols
- Export the image to .jpg format or by using snipping tool copy the image to word
DATA:
Lithology Thickness of Bed
(meter)
Conglomerate 9
Sandstone 8
Claystone 6
Calcarious Layer 7
Breccia 10
Chalk 12
Chert 11

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DESCRIPTION OF THE ROCKS:
LAB#03

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TO DRAW AND CORRELATE THE STRATIGRAPHIC SEQUENCE OF
DIFFERENT WELLS BY USING COREL DRAW
DATA:
Lithology Thickness
of Bed A
(m)
Lithology Thickness
of Bed B
(m)
Lithology Thickness
of Bed C
(m)
Sandstone 8 Limestone 6 Sandstone 7
Breccia 9 Sandstone 8 Limestone 3
Limestone 9 Breccia 9 Breccia 10
Chert 5 Limestone 15 Limestone 7
Siltstone 9 Chert 4 Chert 3
Siltstone 11 Siltstone 9
Conglomerate 4 Conglomerate 5
PROCEDURE FOR DRAWING:
- Select the scale
- Make columns and rows by using gridlines
- Make rectangles in each box.
- Three wells are being drawn with sufficient space between them
- Draw the symbols of different rocks according to their standard symbols.
- Write the descriptions of symbols
- Correlate the same rocks
- Export the image to .jpg format or by using snipping tool copy the image to word

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CORRELATION OF DIFFERENT WELLS:

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LAB#04
4.1. STATEMENT:
DRAW STRATIGRAPHIC SEQUENCE OF LOWER INDUS BASIN BY USING COREL
DRAW
4.2. SCOPE:
- To get information about the stratigraphic layers of indus basin so that the petroleum reserves
can be identified
- Sequence of deposition is very important for the exploration of petroleum reserves
4.3. THEORY:
4.3.1. SEDIMENTARY BASIN:
Sedimentary basins are regions of the earth of long-term subsidence creating accommodation
space for infilling by sediments. The subsidence results from the thinning of underlying crust,
sedimentary, volcanic, and tectonic loading, and changes in the thickness or density of adjacent
lithosphere. Sedimentary basins occur in diverse geological settings usually associated with plate
tectonic activity.
4.3.2. BASIN MAP OF PAKISTAN:
Figure 4.1

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Figure 4.2
4.3.3. MAJOR SEDIMENTARY BASINS OF PAKISTAN:
According to Ministry of petroleum of Pakistan there are 10 basins in Pakistan.
1) Kohat Potwar Basin
2) Central Indus Platform Basin
3) Lower Indus Platform Basin
4) Sulaiman Fold Belt Basin
5) Kirthar Fold Belt Basin
6) Northern Punjab Basin
7) Pishin Fold Belt Basin
8) Balochistan Fold Belt Basin
9) Makran Fold Belt Basin
10) Offshore Indus Basin
However some authers say that there are only three major basins:
 Indus Basin
 balochistan Basin
 Axial Belt
4.3.4. INDUS BASIN OF PAKISTAN:
The catchment area of Indus River is unique and includes 7 worlds’ highest ranking peaks such
as K-2 (28,253 feet), Nanga Parbat (26,600 feet) and Rakaposhi (25,552 feet) in addition to 7
glaciers including Siachin, Hispar, Biafo, Batura, Barpu and Hopper. Indus River originates from
the north side of the Himalayas at Kaillas Parbat in Tibet having altitude of 18000 feet. One of
the important Eastern River draining into the Indus River System is Jhelum River which
originates from Pir Panjal and flows parallel to the Indus at an elevation of 5500 feet. The length
of the main river from the most remote point to the outlet has been estimated to be about 260
miles. Basin shape is numerically calculated with the help of Horton's method and estimated as
0.190. This value indicates an irregular basin with comparatively moderate peaks. Using
different methods commonly used in drainage basin studies, various dimensionless catchment
parameters, useful in predicting inflow in a river have been estimated for the basin.

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Figure 2.3
4.3.5. STRATIGRAPHIC LOWER INDUS BASIN:
The Lower Indus Basin (Pakistan) covers an area of about 400,000 km2
. It contains several oil
and gas discoveries, the largest of which is the Sui gas field (discovered in 1952, with estimated
initial recoverable reserves of 8.624 tcf gas).
The basin lies on the western margin of the Indian Plate and deepens steeply to the west. Cross
sections of the basin are shown in Kadri (1995). Its eastern margin is formed by the Punjab Shelf
and Thar Platform, which are separated by the Jocobabad and Mari-Kandkhot Highs that lie
partly in India. The central deepest part of the basin is known as the Sulaiman Depression in the
northern part of the basin and the Karachi Trough in the south. The northern and central parts of
its western margin are marked by the thrust faults of the Sulaiman and Kirthar fold belts. To the
south, the basin extends offshore. Shown in fig 4.3.
The Thar Platform contains well developed Early to Middle Cretaceous sands that form the
reservoirs of all the gas fields in this region. The Punjab Shelf contains some major stratigraphic
pinchouts. The Sulaiman depression contains some buried anticlines. The Karachi Trough, which
opens up into the Arabian Sea, contains large numbers of anticlines, some of which form gas
fields.

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4.4. LOWER INDUS BASIN FORMATION AND LITHOLOGY MAP:

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REFRENCES:
 http://en.wikipedia.org/wiki/Sedimentary_basin
 http://decarboni.se/publications/regional-assessment-potential-co2-storage-indian-
subcontinent/appendix-3-brief
 (www.mpnr.gov.pk)
 http://en.allexperts.com/q/Geology-1359/2012/4/sedimentary-basins-pakistan.htm
 http://en.allexperts.com/q/Geology-1359/2011/1/Geological-Basins-Pakistan-1.htm

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LAB#05
5.1. STATEMENT:
TO CORRELATE THE GIVEN LOG DATA AND IDENTIFY THE DEPOSITIONAL
ENVIRONMENT
5.2. SCOPE:
- Sea level changes can be calculated
- Lithology can also be fined
5.3. RELATED THEORY:
5.3.1. TRANSGRESSION:
Transgression is a geologic event during which sea level rises relative to the land and the
shoreline moves toward higher ground, resulting in flooding.
5.3.2. REGRESSION:
The opposite of transgression is regression, in which the sea level falls relative to the land and
exposes former sea bottom.
5.3.3. CAUSES OF LEVEL CHANGES:
Sea levels change for three main reasons:
1) As water warms and cools it expands and contracts.
2) The amount of water contained as ice on land surfaces changes over time.
3) The Earth’s surface is dynamic and can move vertically.
The first two reasons are directly caused by global temperature changes. More specifically
transgressions and regressions may be caused by tectonic events such as orogenies,
severe climate change such as ice ages or isostatic adjustments following removal of ice or
sediment load.
5.3.4. APPLICATIONS OF TRANSGRESSION AND REGRESSION:
The study of strata deposited along continental margins under the influence of cyclical Earth
processes such as eustatic sea level change is a branch of stratigraphy called sequence
stratigraphy. Development of this geologic sub discipline in the early 1970s is largely attributed
to petroleum industry researchers who first used seismic reflection profiles to map the
distribution of oil and gas bearing strata in sedimentary basins. Because relative sea level change
determines the location and geometry of these oil-bearing strata along continental margins,
sequence stratigraphy is a powerful predictive tool for oil and gas exploration.

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TABLE#01
Lithology Thickness of Bed A
(m)
Thickness of Bed B
(m)
Shale 5 -
TransgressionSiltstone 7 6.5
Conglomerate 4 5
Sandstone - 11
RegressionCoal - 4.5
Limestone 8 7
Siltstone 6.5 4.5
TransgressionShale 4 3.5
Breccia 7.5 -
WELL A WELL B

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TABLE#02
Formation Well (A) Well
(B)
Well (C) Remarks
Limestone 5 4 2.5
Transgression
Shale 8 8 5.5
Sandstone 6.5 8 4
Coal - - 3
RegressionSandstone - - 4
Siltstone 6.5 5 4
Transgression
Dolomite 9 7 4.5
Sandstone - 3 7
WELL B
WELL C

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REFRENCES:
 http://en.wikipedia.org/wiki/Marine_transgression
 http://www.dnrec.delaware.gov/coastal/Documents/SLR%20Advisory%20Committee/Adapt
Engage/3WhatCausesSeastoRise.pdf
 http://www.bookrags.com/research/marine-transgression-and-marine-reg-woes-
02/#gsc.tab=0

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Figure 6.3
LAB#06
6.1. STATEMENT:
INTRODUCTION TO SURFER SOFTWARE AND ITS APPLICATIONS IN THE
FIELD OF GEOLOGICAL ENGINEERING
6.2. SCOPE:
- It is used for volume based and surface based analysis
- Used for analyzing magnetic resonance imaging
6.3. THEORY:
6.3.1. SURFER:
Surfer is a full-function 3D visualization, contouring and surface modeling package that runs
under Microsoft Windows. Founded in 1983, Golden Software is one of the world's oldest
software companies, and the first to market three-dimensional surface and contour mapping
applications for the PC.

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6.3.2. HISTORY OF SURFER:
Patrick Madison, a CSM computer science instructor, and Dan Smith, a graduate student, began
a partnership in 1983 with the development of a printer interface language that took advantage of
the full resolution available to dot-matrix printers. Their first commercial program, PlotCall,
transformed plotter instructions into dot-matrix instructions compatible with over 20 commercial
printers. This opened the computer graphing and mapping market to the wider arena of users
with inexpensive commercial printers. Between 1985 and 1986 the company released
two DOS applications: Surfer, surface and contour mapping program, and Grapher, a
spreadsheet-plotting application. In 1990 it released its first Windows program: Map Viewer.
Their next product, Didger was released in 1996. Their most recent
programs, Strater and Voxler began shipping in 2004 and 2006.
Applications of Surfer in Geological Engineering:
 Surfer is used extensively for
 Terrain modeling
 Bathymetric modeling
 Landscape visualization
 Surface analysis
 Contour mapping
 Watershed
 3d surface mapping
 Gridding
 Volumetric
It has major role in exploration purposes in petroleum industry. Scientists and engineers
worldwide have discovered Surfer's power and simplicity.
6.3.3. FEATURES OF SURFER SOFTWARE:
- Contour Map
- Base Map
- Post Map
- 3D Surface Map
- 3D Wireframe Map
- Image Map
- Work Sheets
- Map Projections

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Figure 6.4 Contour Map
6.3.4. COMMANDS USED IN SURFER:
 GRID FILES:
Grid files are created using the Grid | Data command. The Grid | Data command requires data in
three columns: one column containing X data, one column containing Y data, and one column
containing Z data.
 NODE:
The grid node editor opens a grid file for editing. Nodes display with a black “+”, blanked nodes
with a blue “x”, and the active node is highlighted with a red diamond.
 Break line:
Break lines are used when gridding to show discontinuity in the grid. A breakline is a three
dimensional .BLN boundary file that defines a line with X, Y, and Z values at each vertex.
 Overlay Map:
If two maps already existed, a map layer can be dragged to a different map object in the Object
Manager. Alternatively, select both maps and click the Map | Overlay Maps command. All
selected map layers are moved to a single map object.
6.3.5. CONTOUR MAP:
Surfer contour maps give you full control over all map parameters. You can accept the Surfer
intelligent defaults to automatically create a contour map, or double-click a map to easily
customize map features. Display contour maps over any contour range and contour interval, or
specify only the contour levels you want to display on the map. And with Surfer you can add
color fill between contours to produce dazzling displays of your maps, or produce gray scale fills
for dramatic black and white printouts.

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Figure 6.5 3D Surface Map
Figure 6.6 Vector Map
6.3.6. 3D SURFACE MAP:
The 3D surface map uses shading and color to emphasize your data features. Change the
lighting, display angle and tilt with a click of the mouse. Overlay several surface maps to
generate informative block diagrams.
6.3.7. VECTOR MAP:
Instantly create vector maps in Surfer to show direction and magnitude of data at points on a
map. You can create vector maps from information in one grid or two separate grids. The two
components of the vector map, direction and magnitude, are automatically generated from a
single grid by computing the gradient of the represented surface. At any given grid node, the
direction of the arrow points in the direction of the steepest descent. The magnitude of the arrow
changes depending on the steepness of the descent.

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Figure 6.7 Post Map
Figure 6.8 Base Map
6.3.8. POST MAP:
Post maps show X,Y locations with fixed size symbols or proportionally scaled symbols of any
color. Create post maps independent of other maps on the page, or overlay the posted points on a
base, contour, vector, or surface map. For each posted point, specify the symbol and label type,
size, and angle. Also create classed post maps that identify different ranges of data by
automatically assigning a different symbol or color to each data range. Post your original data
point locations on a contour map to show the distribution of data points on the map, and to
demonstrate the accuracy of the gridding methods you use.
6.3.9. BASE MAP:
Surfer can import maps in many different formats to display geographic information. You can
combine base maps with other maps in map overlays, or can create stand-alone base maps
independent of other maps on the page. You can load any number of base maps on a page. It is
easy to overlay a base map on a contour or surface wireframe map, allowing you to display
geographic information in combination with the three dimensional data.

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6.4. REFRENCES:
 http://en.wikipedia.org/wiki/Golden_Software
 http://www.ssg-surfer.com/html/surfer_details.html
 http://www.geomem.com/products/6/surfer.html

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LAB#07
7.1. STATEMENT:
BY USING THE LOCATIONS OF DIFFERENT WELLS AD THICKNESS OF GIVEN
FORMATIONS DRAW MAPS OF EACH WELL ON SURFER AND GIVE
INTERPRETATION OF EACH WELL
7.2. GIVEN DATA:
Well
no.
Longitude Latitude
Thickness of Formation
A B C D E F
1 71.3942 29.112 - - 224 19 317 81
2 72.154 29.2286 817 93 113 - - -
3 71.9303 30.8227 50 89 129 - - 31
4 71.6661 28.1761 140 141 29 - - 230
5 72.1575 30.9958 - - 56 - - 34
6 70.2361 28.1474 - - - - 1306 101
7 71.9507 31.4694 406.5 210 - - - -
8 72.6982 28.9754 251 797 - - - -
9 70.8532 28.032 - - 294 22 856 27
10 71.5203 31.1936 - - 15 - 201 21
11 72.3663 29.9771 906 120 - - - -
12 72.5698 29.2442 1143 99 - - - -
13 71.9291 30.523 - - 134 - -- 43
14 71.9594 30.6841 - - 129 - - 45
15 72.0173 30.3448 - - 127 - - 40
16 71.9277 30.5393 222 306 103 - - 42
17 71.8259 31.2321 - - 24 - - -
18 71.7398 28.5952 332 50 31 161 161 76
19 72.2311 30.2556 - - 121 - - 39

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7.3. PROCEDURE:
For contour map:
1) Copy the data from excel file to the New work sheet in the surfer including Longitude,
latitude and thickness and save the file as .bln Extension file.
2) Go to the plot sheet and click on the Grid
and data, insert the .bln file and a grid
file is generated.
3) Now click on the contour map and insert the same grid file that is generated.

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4) A contour map is drawn. Where its colour and shape can be changed in its properties.
5) For post map:
The same procedure is done without making its grid file and the .bln file would have well no. in
its sheet file.
6) Once the post map is drawn, drag the post before the contour map (overlay). Now delete the
map (extra).

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Figure 7.9
7) This is the final result. Where North arrow can be added from symbol and colour and shape
can be changed from properties
7.4. DIFFERENT WELLS:
7.4.1.
WELL A:
Formation=
Limestone

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Figure 7.3
Figure 7.10
7.4.2. WELL B:
Formation=
Silty Shale
7.4.3. Well C:
Formation=Breccia

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Figure 7.4
Figure 7.5
7.4.4. Well D:
Formation=
Volcanic tuff
7.4.5. Well E:
Formation= Gneiss

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Figure 7.6
7.4.6. Well F:
Formation=
Sandstone
7.5. REFRENCES:
- Class Notes

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INTERPRETATIONS FROM WELLS
WELL A:
The depocenter lies at the latitude 29.24, longitude 72.6 and thickness is 1143 ft. which shows
that maximum deposition.
WELL B:
The maximum deposition (depocenter) lies at latitude 28.97, longitude 72.69 and the thickness is
797 ft.
WELL C:
The maximum deposition lies at latitude 28.03, longitude 70.85 and max thickness is 224 ft.
WELL D:
The maximum deposition (depocenter) lies at latitude 28.59, longitude 71.73 and the thickness is
161 ft
WELL E:
The maximum deposition lies at latitude 28.14, longitude 70.23 and thickness is 1306 ft.
WELL F:
The maximum deposition lies at latitude 28.17, longitude 71.66 and thickness is 230 ft.

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LAB#08
8.1. STATEMENT:
BY USING THE LOCATIONS OF DIFFERENT WELLS AD THICKNESS OF GIVEN
FORMATIONS DRAW MAPS OF EACH WELL ON SURFER AND GIVE
INTERPRETATION OF EACH WELL
8.2. GIVEN DATA:
Well
no.
Longitude Latitude
Thickness of Formation
A B C D E F
1 71.3942 29.112 - - 224 19 317 81
2 72.154 29.2286 817 93 113 - - -
3 71.9303 30.8227 50 89 129 - - 31
4 71.6661 28.1761 140 141 29 - - 230
5 72.1575 30.9958 - - 56 - - 34
6 70.2361 28.1474 - - - - 1306 101
7 71.9507 31.4694 406.5 210 - - - -
8 72.6982 28.9754 251 797 - - - -
9 70.8532 28.032 - - 294 22 856 27
10 71.5203 31.1936 - - 15 - 201 21
11 72.3663 29.9771 906 120 - - - -
12 72.5698 29.2442 1143 99 - - - -
13 71.9291 30.523 - - 134 - -- 43
14 71.9594 30.6841 - - 129 - - 45
15 72.0173 30.3448 - - 127 - - 40
16 71.9277 30.5393 222 306 103 - - 42
17 71.8259 31.2321 - - 24 - - -
18 71.7398 28.5952 332 50 31 161 161 76
19 72.2311 30.2556 - - 121 - - 39

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8.3. PROCEDURE:
- Insert data from the excel to the New work sheet in the surfer, containing longitude, latitude
and thickness of formation and save it as bln. Extension file.
- Now using Grid option make it grid file. A report will be generated
- Now go to the New 3D surface map option and insert the same grid file that is generated. So
the final #d surface map is generated.

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8.4. 3D SURFACE MAP OF WELL A:
INTERPRETATIONS:
The depocenter lies at the latitude 29.24o
, longitude 72.6o
and thickness is 1143 ft. which shows
that maximum deposition. Also the thickness is very low at latitude 30.82o
, longitude 71.93o
and
thickness is 50 ft. There is a gradual increase of thickness in this region.
Figure 8.1 3D Surface Map Of Well A

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8.5. 3D SURFACE MAP OF WELL B:
INTERPRETATIONS:
The maximum deposition lies at latitude 28.97o
, longitude 72.69o
and the thickness is 797 ft. The
thickness decreases at the latitude 28.59o
, longitude 71.73o
and the thickness is 50 ft. There is a
variation of the thickness in this region.
Figure 8.2 3D Surface Map Of Well B

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8.6. 3D SURFACE MAP WELL C:
INTERPRETATIONS:
, longitude 70.85o
and max thickness is 224 ft.
The lowest deposition occours at latitude 31.19o
, longitude 71.52o
and thickness is 15 ft. There is
not a gradual variation in this region and the thickness increases slowly.
Figure 8.3 3D Surface Map Of Well C

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8.7. 3D SURFACE MAP WELL D:
INTERPRETATIONS:
The maximum deposition (Depocenter) lies at latitude 28.59o
, longitude 71.73o
and the thickness
is 161 ft. The lowest deposition occours at latitude 29.11o
, longitude 71.39 o
with thickness of 19
ft. The thickness does’t vary gradually and hence the slope occours in a normal way.
Figure 8.4 3D Surface Map Of Well D

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8.8. 3D SURFACE MAP WELL E:
INTERPRETATIONS:
, longitude 70.23o
and thickness is 1306 ft. The
lowest deposition occours at latitude 28.59o
, longitude 71.73o
and thickness is 161 ft. There is
not a large gradual variation of thickness.
Figure 8.5 3D Surface Map Of Well E

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8.9. 3D SURFACE MAP WELL F:
INTERPRETATIONS:
, longitude 71.66o
and thickness is 230 ft. The
lowest deposition occours at latitude 31.19o
, longitude 71.52o
and thickness is 21 ft. There is not
a large gradual variation of thickness.
Figure 8.6 3D Surface Map Of Well F

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