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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract

Chapter from:
AAPG Memoir 67: Seals, Traps, and the Petroleum System, Edited by R. C. Surdam
(Publication Subject: Oil Methodology, Concepts)
AAPG Memoir 67: Seals, Traps, and the Petroleum System. Chapter 9: Previous HitFaultNext Hit Leak Controlled Trap Fill: Rift Basin Examples , by D.M. Allard, Pages 135-142

Copyright © 1997 by The American Association of Petroleum Geologists. All rights reserved.


Chapter 9

Previous HitFaultNext Hit Leak Controlled Trap Fill: Rift Basin Examples

D.M. Allard

Exxon Ventures (CIS) Inc. Houston, Texas, U.S.A.

ABSTRACT

Previous HitInterpretationNext Hit of Previous HitfaultNext Hit leak and seal enhances the understanding of hydrocarbon reservoir systems. Useful applications exist for both field development and seal risk evaluation for undrilled exploration prospects.

Basic Previous HitfaultNext Hit seal data (e.g., logs, lithology from wells, Previous HitstratigraphicNext Hit models of lithology variation away from well control, interpretations of bed juxtapositions across the Previous HitfaultNext Hit plane, and basic well test results) are needed for the interpreter to resolve the puzzle of trap fill limits and possible different reservoir systems within the same faulted field. Previous HitInterpretationNext Hit of both productive and tested wet structures allows for the development of conclusions that may be applicable to different proven or potential traps across the basin.

A refined understanding of trap fill limits and hydrocarbon distribution within a field may be gained by Previous HitinterpretationNext Hit and calibration of Previous HitfaultNext Hit gouge as a seal on a basinwide basis. Evaluation of Previous HitfaultNext Hit gouge as a seal with the displaced section analysis methodology is labor intensive and may not always be an effective exploration tool, considering the data control needed to develop reliable results.

In exploration, the quality of Previous HitfaultNext Hit seal Previous HitinterpretationNext Hit for an undrilled structure is dependent on map quality, well control, and the ability to predict Previous HitstratigraphicNext Hit facies changes away from wells. The minimum calibration requirement for exploration applications of a Previous HitfaultNext Hit seal Previous HitinterpretationNext Hit of an undrilled structure is to have completed interpretations of bed juxtapositions across the Previous HitfaultTop plane(s) for both productive and nonproductive structures elsewhere in the basin.

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