Well Correlation Petrel Workflow Tools – 5 Day Introduction Course Fault Modeling Pillar Gridding Zonation and Layering Facies Modeling Petrophysical Modeling.

Well Correlation

Petrel Workflow Tools – 5 Day Introduction Course

FaultModeling

PillarGridding

Zonation and Layering

FaciesModeling

PetrophysicalModeling

Well DesignVolume Calculation

Plotting

Data Import

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Seismic

Data ImportObjectives

Learn About Import Options– Petrel import Look at Data types Learn How To Organize Input Data– Folders and subfolders Formats– Predefined– General– Wells and Well Tops– Seismic– Copy and move data, to and from a reference project Export options

Petrel Import

Open Project:Relates only to already saved Petrel projects (.pet files). Remember that each .pet file has an associated .ptd data folder!

Reference project tool:Opens a reference project. Data can be copied and moved between the local project and the reference project

Import file:Used for importing all other data (SEG-Y, points/lines, functions, Bitmaps etc.)

Data Types

Wells Seismic 3D grids

Lines Points 2D Grids

Organization of Input Data

3. Import (on selection):It is recommended that all data are imported to existing folders. Right-click and choose Import (on selection) to import data

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2. Inserting predefined folders:All folder types are available from the Insert menu; select the folders to add to the project. Folders can be renamed in the Settings.

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1. Folder types:Most data can be imported into regular folders (or subfolders); but some data types have a special structure (e.g. Wells, Well Tops and Interpretations).

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Import with Predefined Format

Predefined formatsAfter creating a folder, and choosing Import (on Selection), the Import file dialog opens:

Note! Petrel works in Negative Z-values.

1. Find the data to import and select the appropriate format. Press Open.

12. Specify the Template (e.g. Elevation Time or

Thickness depth).

23. Press OK For All if all the files have the same format, and OK if they have different formats.

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Import General (Lines / Points)

No predefined formats available?Check the List of available formats under the Help menu, or use the drop-down menu Files of type and look at the example format capture at the bottom of the dialog box. If there isn’t one, use a General format:

11. Find the data and select the General

lines/points (ASCII) format. Press Open.

2. Specify the number of header lines (seen from the Header info file capture).

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3. Make sure X,Y and Z columns match with the file (can be either space or tab delineated).

X Y Z

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4. Data can be loaded as Points or Lines.

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Import Wells – Overview

Import well header

Import well path (deviation)

Import well logs

Import well tops

2. Check that the column numbers match the Header info capture at the bottom of the dialog window.

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Import Wells – Well Heads

A Well heads file: ASCII file defining the well’s top location (X-Y-Z) and name (path length (MD), well symbol and Unique Well Identifiers are optional).

3. Each well can have only one name, specified in the Well Header. When importing deviation and logs the names must match. Wells can be identified by UWI or Name (3A). Attributes can be added and removed (3B).

3A

1. Create a well heads file using a text editor or Excel and save as a .txt file. Columns can be space or tab delimited. Import (on selection) into the Wells folder. The format is Well heads.

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3B

Import Wells – Well Path (Deviation Survey)

1. Import (on selection) into the Wells folder.

2. Select the correct format.

3. Match the file name to existing well name.

4. Select correct survey type and define columns.

5. Select well type (onshore/offshore) adjust units if necessary.

Import Wells – Well Path (Deviation Survey)

The deviation survey can be viewed in a Spreadsheet.

Right-click on the well in the Input pane and select Spreadsheet

The Deviation survey can be edited after import, but it is not recommended. Only white columns are editable

Import Wells – Well Logs

1. Import (on selection) into Wells folder

2. Select data files and the correct format (e.g. ASCII or LAS)

3. Match the file name to the well trace name

4. Go to Input data tab and set appropriate Data type. Also, if the log data was exported from GeoFrame, make sure MD decreases, GeoFrame style is selected.

Import Wells – Well Logs

4. The new logs are stored under Global well logs in the Wells folder (A). Each well has the logs that belong only to that well in a Well logs folder (B)

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2. If the import dialog suggests Create New under Global Well Log, the log type has not been imported before and a new global well log will be created.

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1. Select Autodetect or Specify logs to be loaded (best for QC).

3. OK FOR ALL: PETREL will try to find this log configuration for all the imported log files.

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4A

4B

Import Wells – Well Tops

Well Tops are otherwise known as picks or markers. They can be imported as Horizons, Faults or Other.

1- Insert a Well Tops folder.

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2- Right-click on the Well Tops folder and select Import (on selection).

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4- Check the units and attributes and change if necessary. Click OK for All.

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3- Select the files to import and the correct format.

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Import Wells – Well Tops Spreadsheet

2. Right click on the Well Tops folder and select Spreadsheet. This will list all well tops and their attributes

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3. After import, additional well tops or well cuts can be added by appending a new row in the Spreadsheet. Well tops can also be copied from an Excel file (Ctrl+C/V)

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1. The well tops are sorted by: Attribute, Stratigraphy (+ Faults and Others) and by Wells.

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Organization of Well Data

Organize wells in subfolders. This can be done in two ways:

1. Manually (drag and drop): Right-click on the Wells folder and select Insert Folder. Rename the folder (A) and drag and drop the desired wells into it (B). Use relevant names, e.g by Platform name (B) or by Type of wells (C).

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1B

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2. By Polygons: Draw a polygon from Make/edit polygons process (A). Change the Line type from Other to Boundary polygon and rename (info tab). Right-click the polygon and select Move wells inside this. All wells in that area inside the polygon will be placed in a new folder (B)

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2B

Reference Project tool

After import there may still be data missing. An easy way to regain or copy data is to access another project and copying the data to your current project.

1. Go to the File menu and select Reference Project tool. A dialog window opens.

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2. Open a project to copy from, or move data to.

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4. By default, data filters are turned on, enabling the user to view which objects are newer, older, equal or non existing, according to their counterparts in the other project. Filters can be toggled off at the users discretion.

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3. Toggle on data of interest, copy it between projects using the arrows, two way transfer.

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Note: A read-only reference project can NOT be altered, make the chosen Reference project a read-only to be sure of no edits .

Loading Seismic 3D data

1. Insert a New SeismicMain folder.

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2. Right-click on the Seismic main folder and choose Insert seismic survey folder.

3. The Seismic main folder contains filters and the new Survey 1 folder. Right-click it and choose Import (on selection).

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4. Locate the seismic volume of interest and import it in the correct format. Specify which vintage and remember correct template on importing (QC).

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Export Options

Most data can be exported. There is a very easy way to export objects/folder:

2. In the export dialog box, Petrel will list ONLY the available options for export; look at the Save as type drop-down menu and select a format.

23. Type in the name of the file and click Save.

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4. Right-click on the Wells folder; selecting Export will export the well heads.

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1. Right-click on the object/folder and select Export.

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5. Further down are options to export logs (All Logs) and deviation surveys (All Wells).

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Note: ECLIPSE/VIP Well Completion data (I-J-K wells) must be exported from the 3D Grid in Models pane

There are different options for special data types, for example Wells.

Export Seismic Data 1. Right-click on a

seismic survey and choose Export.

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2. Choose SEG-Y or ZGY as the format and specify the output file name, then click Save.

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EXERCISE

Extra: OpenSpirit

To use OpenSpirit you need a Server and Client installation.

Listen to Data Selection events (lightning bolt) must be active in Petrel before broadcasting data via OpenSpirit

OpenSpirit parameters are setunder Project menu in Petrel.

There must be an active OpenSpirit Session to connect to.

Listening

Not listening

The OpenSpirit Data Selector can be launched from the File menu.

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Extra: Real-Time Data Link

The Real-Time Data Link: streaming real-time data such as logs, events and trajectories from InterACT* and other 3rd Party WITSML data and files servers.

The Real-Time Data Link maps wellbores from real-time data servers to the wells and allows mapping of data channels to logs. Data is immediately incorporated into Petrel for real-time sessions or modeling.

The Real-Time Data Link interface is available from any single Petrel well node, via the well right-click menu. The user selects “Connect to Real-Time data link”.

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