geolog6.6&well analysis
TRANSCRIPT
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Intro to Geolog6.6
Darren Smith
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Geolog6.6-The Fast Lane to Formation Evaluation
• Petrophysical Analysis, Well Data Management, & Geological Interpretaion
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Geolog6.6-Course Objective
• “This introductory course provides the geoscientist and technician with a working knowledge of Geolog. The course provides an overview of project and data structure; manual and graphic editing, data transfer, utility modules, cross-sections, working in multi-well projects and single well layouts. The course is centered around hands-on exercises, which illustrate commonly used features and functionalities”
• Courses focusing on Deterministic Petrophysics, Wellbore Geophysics, Facimage, and other subjects are available. Please visit the Customer Hub to view scheduled courses.
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Course Outline: Geolog6.6 & Well Log Anaylsis
• Day One:• Preliminaries: Create & manage projects.
Geolog6.6 behavior. Help?• Data Loading: Std. & Custom Formats• Data QC & Editing: Merge, depth, &
more• Well Log Anaylsis
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Course Outline: Geolog6.6 & Well Log Analysis
• Day Two• Project Analysis, “The Big Picture”• Analyze Project Dataset• Develop Project Basesmap• Determine Candidate Wells for Cross
Section• Build, Correlate, & Interpret a Cross
Section• Generate Product & Present Findings . . .
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Geolog6.6 Workflow by Application
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Section 1. MAIN MENU-Geolog6.6 Basics
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Section 1. MAIN MENU-Geolog6.6 Basics
• Launching Geolog• 1. PPM (Paradigm Product Manager)• 2. Command Prompt: geolog6.6/bin/geolog6• Open Existing Project• Project Structure• Deregister an Existing Project• Create a New Project• Geolog Behavior• Help• Feedback
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Launching Geolog6.6-Paradigm Product Manager
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Geolog6.6 Splash Screen
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Open an Existing Project
• Project selection GUI lists
projects available to the user • Tabs at top can delimit project
parameters• Possible to search for existing
projects• Naming convention:
project_name@host
Geolog Basics pg. 61
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Geolog6.6 Project Directories
• /Your_Project/• /bin/ executables specific to the project• /data/ houses raw data files; LAS, ASCII, DLIS, TIF• /layouts/ log layouts, cross plots, histograms• /loglan/ log language, user created code to process
logs• /plots/ graphic files for plotting or other applications• /reports/ pay summaries, info on data loads, .txt
& .pdf• /specs/ data loading specs, module parameters• /wells/ well data stored as *.well & well lists
Geolog Basics pg. 6
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Deregister a Project.
Useful for:• Whenever analysis is completed or abandonment occurs• Limiting load on server & network• Make the project & data less visible to others
Geolog Basics pg. 65
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Deregister a Project
• DOES NOT delete the data
• Project directories & data remain in original location
• Data is not visible by geolog until the project is recreated (reregistered)
Geolog Basics pg. 65
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Create a New Project
• All names are suitable• Avoid use of “@”• Use an “_” in place of
spaces• Public & private projects
Geolog Basics pg. 59
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Geolog6.6 Behavior
• Supported OS’s: Solaris, Irix, Linux, Win2K/XP• Geolog6.6 now runs windows native!• Developed on Unix & retains Unix behavior• MB1: select item• MB2: drag item & duplicate• MB3: options• MDI-Cursor position/attribute is reflected in all open
views/windows• Browser Bar project influences all sub-apps• Feedback
Geolog Basics pg. 7
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Geolog6.6 Help
• Indexed online help• Search for keywords &
phrases in documentation• Adobe6.0 recommended
Geolog Basics pg. 46
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Geolog6.6 Feedback
• Running dialog of all executions & errors• User Configurable• Great for trouble-
shooting
Geolog Basics pg. 35
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Section 2. CONNECT Data Loading
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Section 2. CONNECT-Data Loading
• Load & Unload Data to & from Geolog Projects• Load Standard Formats: LAS, LIS, TIF, BIT• Load Custom Formats: ASCII, Geolog ASCII• Transfer Data From Project to Project• Establish Mnemonic Conventions• File Conversions: LAS to TIF & others• Load & Unload Data to & from non-• Geolog Projects (OW & Geoshare)
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Connect-Unload LAS3 file
• Choose: Connect-Unload
• Select a Well & Unload
format
Connect pg. 41
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Unloading a LAS3 Format File
• Pick sets/curves & start unload Connect pg. 45
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ASCII LOAD.TXT, CSV, DAT, etc.
• Load data files created in a spreadsheet application
• User Defined; sets, & curves
Connect pg. 25
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Project to Project (copy data)
1. Choose Project to Project
2. Select input project (stars) and desired wells to copy. Then select target project (moons).
Connect pg. 48
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Project to Project (copy data)
• Select import sets & curves
Connect pg. 48
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Connect-File to File (convert file formats)
Connect pg. 51
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Connect-File to File, LAS to LIS/TIF
Connect pg. 51
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Section 3. WELL-Data QC
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Section 3. WELL-Data QC
• Create Log Layouts to View Data• Append Runs/Merge Logs• Despike• Normalize • Resample• Fill Missings• Environmental Corrections
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Section 3. Well-Log Layout
Well pg. 12
• 11 Track Types• Datum to MD, TVD,
TVDSS, etc.• Use Layouts for
Graphical Editing• Used for Formation
& Dip Editing
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Merge Runs
Well pg. 81
• Graphical merging of logs
• Merge from end to end or splice in sections of logs
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Despike Logs (Curve Insert)
Well pg. 85
• Smooth / despike curves with mouse graphically
• Module Interface: General-Log Edit-Despike
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Normalize Logs-Using GR Histogram & Linear Transform
Model Well Well to Edit w/ Ghost of Model Well
Edited Well Normalized to Model Well
(not in tutorial, see Help-Xplot, Linear Transform)
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Resample
Well pg. 131
• Irregularly sampled data• Reduce sampling rate• Reduce .well file size
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Fill Missings
• Performs a linear interpolation across gaps
• Can occur with LWD data
(not in tutorial, use Well-General-Log Edit-Fill Missings)
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Environmental Corrections
• Environmental corrections available for common logging tools
• Useful for older logs w/out corrections or as a comparison tool to achieve best correction e.g. SS/LS/DOL?
(not in tutorial, use Well-Petrophysics-Environmentals)
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Section 4. WELL-Log Analysis
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Section 4. Well Log Analysis
• Log Scanning for Zones of Interest• Using Basic Well Log Analysis method of Asquith and
Krygowski
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Source: Basic Well Log Analysis. Asquith & Krygowski 2004
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Log Scanning-Step 1. Find Clean Zones
• Mudlogs• Gamma Ray• SP• VSH (GR & SP)
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Log Scanning- Sandstones or Carbonates?
• Consult Mudlog• Core Data• Offset Wells• Depositional
Environment
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Log Scanning-Resistivity
• Scan Resistivity for High Values
• Spot Shallow & Deep Separations
• Invasion-Asses Permeability
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Log Scanning-Evaluate Porosity
• NPHI-Possible Gas Effect• DPHI• SPHI • PHIE• Define Zones of Interest
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Section 5. SECTIONMulti Well Analysis
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Section 5. PROJECT-Multi-Well Anaysis
• Tool to Visualize “The Big Picture”-Mapsheet• Analyze Project Dataset-Well Catalog• Contour Well Data• Determine Wells for Cross Section-Well Catalog
& Mapsheet
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Mapsheet Uses
• Project Overview
• Post/Manage Cultural Data
• Create X- Sections
• View Well Path projections
• Contour Data• Graphically
Select Wells to Process
Project pg. 15
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Well & Section Catalog
• Text based project management
• Insert, copy, & delete of wells, sets, logs, & sections
• Search utilities• Edit well header
data• & more
Project pg. 49
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Well & Section Catalog Search Functions
• Search project database for specific information• Build search criteria to constrain results• Uses: Flag data, specify wells to process, use as
starting point for processing
Project pg. 52
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Contour Well Data. (Malabar Fmn. Thickness)
Project pg. 41
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Section 6. Section-Multi Well Correlation
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Section 6. SECTION-Multi-Well Correlation
• Construct a Cross Section Graphically • Spatially Define a Cross Section• Establish Correlations• Interpret Cross Section• Manipulate & Manage Existing Cross Sections
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SECTION-Define a Section Graphically from Mapsheet
• Insert sections using the mouse
• Project multiple wells to the section
• Well spacing is fixed
Section pg. 3-6
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SECTION-Define a Section Spatially.
Section pg. 11
• Allows for user defined spacing
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SECTION-Establish Correlations
Section pg. 15
• Correlate any tops type interpolated curves
• Datum to a depth or formation
• Structural & stratigraphic cross sections
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SECTION-Add User Interpretations
Section pg. 32
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Section 7. ARTIST-Graphic Utilities
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Section 7. ARTIST-Graphic Utilities
• Create Standard Log Header• Create Fill Pattern• Create Marker• Create Montages
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ARTIST-Standard Well Header w/ Variable Text
• Header format obtains data from active well
• Well header, constants, & other data is available
• Use header for all projects & wells
Artist pg. 45
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ARTIST-Create Fill Pattern For Use in Layouts, Cross Sections, & Artist Images
Artist pg. 42
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ARTIST-Create Marker For Use in Layouts (point tracks), Xplots, & Artist Images
Artist pg. 40-44
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ARTIST-Create Montage to Present Findings
Artist pg. 51
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Section 8. Workflow Review & Summary
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Section 8. Workflow Review & Summary
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Geolog6.6 Project Directories (a review)
• /Your_Project/• /bin/ executables specific to the project• /data/ houses raw data files; LAS, ASCII, DLIS, TIF• /layouts/ log layouts, cross plots, histograms• /loglan/ log language, user created code to process
logs• /plots/ graphic files for plotting or other applications• /reports/ pay summaries, info on data loads, .txt
& .pdf• /specs/ data loading specs, module parameters• /wells/ well data stored as *.well & well lists
Geolog Basics pg. 6
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Section 8. The Product
• Archives• Means for Asset Management• Standardized Data Formats-Layouts, Xplots,
Histograms• EPOS3 Datastore: Data is Available to All
Paradigm Products
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Advanced Geolog Courses Offered
• Deterministic Petrophysics• Facimage• Geomage• Geophysics• Geosteering• Customized Training
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The End.Thanks!
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