petrel 2000 petrel introduction g&g - مهندسی...

PETREL 2000

PETREL INTRODUCTION G&G

SCHLUMBERGER

www.oilexploration.ir

Objective

• Data Interpretation and Analysis using Petrel

– 2D Seismic data visualization and interpretation

– Interpretation of structure (e.g. faults)

– Stratigraphic correlation

– Velocity modeling

• Materials (Courtesy: 2011 IBA team University of

Alabama)

– 13,385 km2 study area

– 15 2-D time migrated seismic lines (1981 vintage)

– 7 wells (2 TD in basement)

– Well seismic ties >32 km


• 3D visualization

• Well correlation

• Classification and Estimation (Artificial Neural Net)

• Creation of synthetic seismograms

• Seismic attributes

• Geobody Interpretation

• 2D & 3D seismic interpretation and modeling

• Seismic volume rendering and extraction

• 3D mapping

• 3D grid modeling for geology and reservoir simulation

• Velocity Modeling (Domain Conversion)

• Well log upscaling

• Facies Modeling

• Petrophysical Modeling

• Data Analysis

• Uncertainty Analysis

• Optimization

• Workflow editor

• Fracture Modeling

• Volume Calculation

• 3D well design

• Streamline simulation

• ECLIPSE Simulation

• Simulation post-processing

• Remote Simulation Run

submission

• Plotting

Petrel Key Benefitswww.oilexploration.ir

Explorer Paneswww.oilexploration.ir

Project Coordinate System

File New Project


Select Project Coordinate System

Helpful website to get an overview on Geodetic Datum

http://www.colorado.edu/geography/gcraft/notes/datum/datum_f.html


Import Seismic Datawww.oilexploration.ir

Import Seismic Data


Import Base Map

1. Bitmaps (bmp, jpg, tiff) can be imported and visualized in Map Window2. Save a map from Google Earth3. Insert new folder in the input pane Rename as map Right click

Import on Selection4. Right click on the image Settings Settings input Lat-Long data


Import Well Logs www.oilexploration.ir

Import Well Logs (3 steps) 1. Well head An ASCII file (EXCEL file saved as .txt-tab dilimited) must be created with following required attributesa. Well Nameb. X coordinatec. Y coordinated. Kelly Bushing (Elevation datum)e. Bottom Depthf. TD (True vertical Depth)


Depth Reference/Depth Datum

Objective Q/A

Search “Schlumberger Oilfield Glossary” in Googlewebsite : http://www.glossary.oilfield.slb.com/default.cfm

Search for following terminologiesa. Depth Reference or Depth Datum b. Kelly Bushingc. Rig Floord. Measured Depthe. True Vertical Depth

Figure Courtesy

http://www.cdc.gov/niosh/face/stateface/ok/03ok034.html


Import Well path/deviation www.oilexploration.ir

Import Well Logs www.oilexploration.ir

Seismic Data Visualization

Right click on seismic line

Create Interpretation Window

The seismic interpretation window gives you a classic 2D view of the seismic data. Inline, crossline, composite lines and any type of random lines, can be displayed in the interpretation window. All interpretation tools are available in this window and the view can be zoomed, stretched and squeezed in either direction.


Seismic Data Visualization: Composite Lines

<--Start new composite line to draw more than one composite lines


1. Check following seismic lines

1981 D-81_Amplitude, 1981 B-81_Amplitude, 1981 A-81_Amplitude,

1981 27-81_Amplitude, 1981 16-81_Amplitude

Seismic Data Visualization: Composite Lines

2

345

2. Select orthogonal

view

3. Select composite

section

4. Select the lines to

be added into the

composite section

(become bold white),

double click when

you are done with

adding lines

5. Composite folder

will be created

automatically in the

input pane


Seismic Data Visualization: Convert to 2D seismic line www.oilexploration.ir

Seismic Data Interpretation www.oilexploration.ir

Interpret Grid Horizons [H]

Seeded 3D autotracking [Shift +A]

Guided autotracking [G]

Manual interpretation [U]

Seeded 2D autotracking [A]

Insert New folder

Right clickInsert seismic horizonNew horizon will be added “Seisimic Horizon 1” and be activated (bold) Click on choose from the following options

Horizon picking

Right click on 1981 27-81_Amplitudes Create interpretation window


Two ways to interpret faults:

• Classical interpretation (drawing fault segments) in the seismic interpretation

- flexibility of traditional interpretation- clarity of fault planes triangulated in 3D

• Fault modeling directly on the seismic in 3D process- ready for gridding as soon as the interpretation is complete. - interpreter is forced to solve problems regarding fault hierarchy and connections - no need for reinterpretation before fault modeling

Fault picking www.oilexploration.ir

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