The Many Facets of Facies in PetraPetra User Group Meeting Series

Armin Schafer, Technical AdvisorArmin Schafer, Technical Advisor

Feb 23, 2012

Petra User Session Agenda

• News and Announcements

•Creating Facies Curves from Log Crossplots

• Creating Facies from Lithology description from Detailed Core

2

• Creating Facies from Lithology description from Detailed Core

Analysis imported from Accumap into Interval Tab

• Questions

Add Facies Polygons to Log Crossplot

3

Example of 3 Facies on Log Crossplot

4

Facies from Log Crossplot

5

Save polygon (facies) files

6

Save polygon (facies) files including area

outside of Polygons

7

Create Facies Curve using Compute from logs

advanced transforms

8

Select the cross plot Facies Polygon file to

create the Facies output log

9

Define Facies Values for the polygons as

wells as outside of all polygons

10

Set up Single Well Display to view facies log

11

Set up scale for facies log

12

Setting up GeoColumn Shading for Facies log

13

Matching the facies log to the colors of the

polygons used

14

Example of Log Crossplot Facies Curve

0GR

150DPSS

Log Crossplot

Facies Curve

15

Petra User Session Agenda

• News and Announcements

• Creating Facies Curves from Log Crossplots

•Creating Facies from Lithology description

16

•Creating Facies from Lithology description from Detailed Core Analysis imported from Accumap into Interval Tab

• Questions

Detailed Core Analysis in Petra Intervals

To see how to import Detailed Core Analysis from Accumap

into Petra Interval tab, go to

IHS Online Community > Petra > Petra User Group Meetings

http://www.ihscommunity.com/energy/index.php?board=31.0

17

http://www.ihscommunity.com/energy/index.php?board=31.0

And select the Subject: Petra Interval Data Detailed Core

Analysis Presentation

This is a pdf of the powerpoint for the Sep Petra UGM and

provides instructions on how to work with Detailed Core

data.

Detailed Core Analysis loaded as Interval

Data from Accumap, choose Edit Details

18

Using Edit Interval Data to view the intervals

19

Using Edit Interval Data to edit the interval

attributes and quickly graph intervals.

20

Facies log (stip log) from detailed core

analysis lithologies – note shift of facies log

0

GR

150

DPSSFacies log (strip log)

21

To shift the facies log, use Edit Details

22

Click on Edit under Edit Interval Data

23

Add the appropriate Bulk Shift

24

Facies log from detailed core analysis

lithologies – note facies log now matches

0

GR

150

DPSS Facies log (strip log)

25

Create a Porosity Log Curve from Core

Analysis Interval Table

26

Porosity log curve versus Core derived

porosity curve (in red)

0

GR

150

DPSS Facies log (strip log)

Core Porosity Curve

27

Quick Method to Smooth Logs using Preview

on Logs Tab

28

Quick Method to Smooth Logs using Preview

on Logs Tab

29

Quick Method to Smooth Logs using Preview

on Logs Tab

30

Smoothed once Smoothed twice

Smooth Logs to match log curve using

Compute from Logs > Log Transformations

31

Porosity log curve versus smoothedCore

derived porosity curve (in red)

0

GR

150

DPSS Facies (strip log)

Core Porosity Curve

32

Add core_Kmax curve and facies curve

0

GR

150

DPSS Facies (strip log)Core KMax Facies Curve

Core Porosity Curve

33

Depth shift Core porosity using multi curve

depth shift to match porosity curve

34

Final result showing smoothed, depth shifted

core derived porosity curve and core Kmax

0

GR

150

DPSSFacies (strip log)

Core KMax Facies Curve

Core Porosity Curve

35