Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3838144/9781629811512_frontmatter.pdf by guest on 27 September 2021 Handbook of Log Evaluation Techniques For Carbonate Reservoirs By George B. Asquith Pioneer Production Corporation Methods in Exploration Series No. 5 Published By: The American Association of Petroleum Geologists Tulsa, Oklahoma USA Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3838144/9781629811512_frontmatter.pdf by guest on 27 September 2021 Published by The American Association of Petroleum Geologists Tulsa, Oklahoma 74101, USA Copyright © 1985 by The American Association of Petroleum Geologists All Rights Reserved For AAPG: Editor: Richard Steinmetz Science Director: E. A. Beaumont ProjectEditor: R. L. Hart Published March 1985 Revised September 1985 Asquith, George B. Handbook of log evaluation techniques for carbonate reservoirs. Bibliography: p. L Oil well Carbonateres ervoirs-Eval_uation. 2. logging,Electric. 3.Petroleutn ..Geology--United States­ Case studies. 4. Petroleum-Geology-Canada-Case studies. I. Title. TN87l.A$28 1985 622'.182 85·6212 ISBN 0-89181-655.0 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3838144/9781629811512_frontmatter.pdf by guest on 27 September 2021 Author s Note: This handbook is designed for explorationists who work in the real world and who, therefore, aren't always lucky enough to have textbook-type evaluation problems in their everyday work, especially when working in carbonate reservoirs. This book is largely devoted to explaining and then illustrating a variety of techniques which can be brought to bear on carbonate-related problems. I hope you find this book useful, but that you apply these techniques with caution. They may not work every time. George B. Asquith Pioneer Production Corporation Amarillo, Texas March, 1985 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3838144/9781629811512_frontmatter.pdf by guest on 27 September 2021 Publisher's Note: Wherever the dagger symbol t appears next to a log abbreviation, it signifies a specific log package that car- ries the mark of Schlumberger. Hereafter all references to this mark in the text will be understood by the reader as such. IV Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3838144/9781629811512_frontmatter.pdf by guest on 27 September 2021 " Table of Contents: 1. Introduction ............................ ......... .. ... .. ...... .. ... ..... ..... ..... ............1 General ...... ... ...... ... ... ........ ..... ...... ..... ..... .... ... .. .... 1 Resistivity Variations as a Function of Pore Geometry and Hydrocarbons .... .... ... 1 2.Detennination of Cementation Exponent (m) ...... ................... ...... ...... ........ ..... 7 1: . Case Study Pennsylvanian Canyon Reef, Scurry County,Texas . .... ... 7 3. Use ... ....... ................................... ... ...... ... .. .. .. of Bulk Volume Water .... 13 Case Study 2: Ordovician Red River Formation, Williston Basin, North Dakota ................ 13 3: Case Study Devonian Zama Reef, Alberta, Canada ........ ... ......... ... .... ..... 18 4. Production Ratio Index . ...... ........... .................................... ............... .. 19 Case Study 4: Lower Permian Council Grove B-zone, Ochiltree County, Texas . .... ..... .... 19 5. Combining Water Saturation/ Ratio Method, Moveable Hydrocarbon Index, and ...................... ............ ...... 22 Bulk Volume Water, Archie Water Saturation 1 .. Case Study 5: Pennsylvanian Lansing-Kansas City Formation, Northwest Shelf, Anadarko Basin . 22 I · 6. Use of Single Textural Parameter, W, for Solving Microporosity ... ......... ... .............. ........ 29 Case Study 6: Jurassic Smackover Oolite, Gulf Coast . ... ....... .... ...... ... 29 7. Use of Dielectric Constant Logs ......... ........... ... ......... ... .. ... ........ ......... 37 Case Study 7: Pennsylvanian Lansing Limestone, NorthwesternKansas . ... .... 37 8. Fracture Porosity and the Cementation Exponent (m) ........... ......... .. .............. ........ 43 I� Summary ....... ...... ... ............................ ... .. .. ....... ... .......... ......... .... 44 References ....... ......................... .......... .. ............................ ..... ..... 45 Appendix ............ ....... .... ........ .. .. ................ ........ ...... ......... ....... 46 Review of Essential Logging Terms . 46 Index ......... ........................ ................ .............. .......... ................ 47 I• ., Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/3838144/9781629811512_frontmatter.pdf v by guest on 27 September 2021.