Skip to Main Content
Book Chapter

Application of a Modern Electrical Borehole Imager and a New Image Interpretation Technique to Evaluate the Porosity and Permeability in Carbonate Reservoirs: A Case History from the Permian Basin, United States

By
Vivek D. Chitale
Vivek D. Chitale
Reservoir Evaluation Services
,
Halliburton Wireline and Perforating
,
Houston, Texas, U.S.A.
Search for other works by this author on:
Clive Johnson
Clive Johnson
Occidental of Elk Hills, Inc.
,
Bakersfield
,
California, U.S.A.
Search for other works by this author on:
David Entzminger
David Entzminger
Whiting Oil and Gas Corp.
,
Midland Office
,
Midland, Texas, U.S.A.
Search for other works by this author on:
Lyn Canter
Lyn Canter
Whiting Petroleum Corp.
,
Denver
,
Colorado, U.S.A.
Search for other works by this author on:
Published:
January 01, 2010

Abstract

This chapter presents the results of field testing a modern generation wireline electrical borehole imager together with a new borehole image interpretation technique applied in a development well drilled in the Permian Basin, Texas. The borehole imager is designed so as to acquire superior quality images even under conditions of a very high ratio of formation resistivity to mud resistivity (Rt:Rm) ratio, which enhances the quality of formation evaluation of carbonate reservoirs particularly. A new borehole image interpretation technique was developed specifically to evaluate the porosity and permeability of carbonate reservoirs by integrating high-resolution data from an electrical borehole image log with the conventional wireline logs.

As shown in the chapter, the X-tended Range Micro Imager (XRMI™, manufactured by Halliburton) with improved signal-to-noise ratio and expanded dynamic range was able to yield a high-resolution microconductivity signal. This helped generate very high-resolution borehole images showing millimeter-size features in the fabric of carbonate beds. The microconductivity signal was then analyzed with the help of a newly developed software technique that first equates the total signal with total porosity, which is then resolved into fractions correlatable with micro-, primary, and secondary porosity. The new technique of image interpretation treats permeability based on published petrophysical models of equating rock types in carbonates with porosity types.

Integrated analysis of XRMI and other logs from a Whiting Oil and Gas Corporation well drilled in the Wolfcampian carbonate reservoir in the Permian Basin of the United States shows that facies and layer boundaries, the internal fabric of the carbonates, and the estimates of different porosity fractions and permeability determined using the new imager and the new interpretation technique closely follow the core descriptions and laboratory analysis of porosity and permeability. These results are encouraging because the single well correlation(s) will be applicable in the future to newly drilled wells in similar geological facies in locations without core control.

You do not currently have access to this article.

Figures & Tables

Contents

AAPG Memoir

Dipmeter and Borehole Image Log Technology

M. Pöppelreiter
M. Pöppelreiter
Search for other works by this author on:
C. García-Carballido
C. García-Carballido
Search for other works by this author on:
M. Kraaijveld
M. Kraaijveld
Search for other works by this author on:
American Association of Petroleum Geologists
Volume
92
ISBN electronic:
9781629810263
Publication date:
January 01, 2010

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal