2 Data Processing Workflows

Contents

General Workflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Data Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Recommended Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Paradigm™ Rock & Fluid Canvas™ 2009 | Epos™ 4.0 Data Processing Workflows 2-1

General Workflow

The general workflow for the processing of NMR data is separated into 7 steps:

1. Quality Control

2. Derivation of NMR properties of fluids

3. Processing of raw NMR data

4. Inversion

5. Hydrocarbon Analysis

6. Interpretation of T2 distributions

7. Modeling of NMR response.

An explanation of the principles behind data processing is given at the beginning of each section. Further information on NMR principles can be found in NMR Logging, A Basic Guide.

NOTE NMR functions are only available for single well processing (only one well may be open in the Well application).

Data Requirements

Specific data is required for a complete processing and interpretation cycle. The availability of data is checked using the appropriate QC Assist option on the Petrophysics > NMR menu. The data checks are based on the NMR QC files that are located in the geolog_home/specs directory. These files list all the data that is required for complete processing and interpretation.

See the CMR_Baker_Halliburton_data_eg.txt file in the <geolog install>/doc/examples directory for examples of CMR, Baker-Atlas MRIL C** and Halliburton/Numar data.

Data Processing Workflows 2-2Paradigm™ Rock & Fluid Canvas™ 2009 | Epos™ 4.0

Recommended Layouts

Layouts for viewing NMR data at each step can be found at the bottom of the NMR menu in Geolog’s Well application. The layouts are organized by tool type and then by processing step.

Data Processing Workflows 2-3Paradigm™ Rock & Fluid Canvas™ 2009 | Epos™ 4.0

Index

Ddata

requirements for NMR 2

LLayout

recommended for use with NMR tools 3

NNMR

data requirements 2general workflow 2recommended layouts 3

Ppredefined

NMR layouts 3

Wworkflow

NMR general 2

Data Processing Workflows 2-4Paradigm™ Rock & Fluid Canvas™ 2009 | Epos™ 4.0