地质综合法预测剩余油

doi:10.11867/j.issn.1001-8166.2006.05.0539

地球科学进展 ›› 2006, Vol. 21 ›› Issue (5): 539 -544. doi: 10.11867/j.issn.1001-8166.2006.05.0539

地质综合法预测剩余油

尹太举,张昌民,赵红静

长江大学地球科学学院，湖北荆州 434023

收稿日期:2005-09-06 修回日期:2006-03-09 出版日期:2006-05-15
通讯作者: 尹太举 E-mail:yintaij@yangtzeu.edu.cn
基金资助:
国家自然科学基金项目“基准面旋回的理论解析与定量层序地层模型”(编号：40572078/D0206)资助.

Remaining Oil Prediction Based on Comprehensive Geological Analysis Methods

Yin Taiju,Zhang Changmin,Zhao Hongjing

Colloge of Geoscience, Yangtze University, Jingzhou 434023, China

Received:2005-09-06 Revised:2006-03-09 Online:2006-05-15 Published:2006-05-15

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地质综合分析法预测剩余油大致可以分为3个步骤：①建立地质知识库；②建立储层地质模型；③以成因砂体为单元分析砂体开发特征，预测剩余油分布。基于双河油田小井距解剖建立的地质知识库，建立了储层建筑结构平面和剖面模型。对结构要素的吸水、产液、接触关系及其完善性研究表明，水下分流河道砂体物性好，规模较大，易于控制，富集的剩余油较少，河口坝砂体虽物性好，但规模小，常有许多砂体不完善而成为剩余油富集区，重力流砂体、水下溢岸砂体则由于规模小，物性差，常成为剩余油富集区，席状砂则虽然展布广，但由于物性差，是剩余油富集砂体。这些剩余油分布可分为孤立状和镶嵌状2种。

关键词: 储层结构, 结构要素, 接触关系, 剩余油, 高含水, 地质知识库

A method for remaining oil prediction is proposed based on comprehensive geological analysis method. The method incudes 3 steps as following:(1)founding geological data base;(2)founding the reservoir architectural model and (3) analyzing the production characteristics of the reservoir based on the basic unit of architectural elements and predicting the high potential areas of remaining oil. Such things as the correlation of the lithofacies and well-logs, the geometry character parameter are included in the geological data base. Reservoir architectural model is established, and the characteristics of model are analyzed. The study shows that there are obvious difference in the output, injection sweptment and the controlled level in different architectural elements. The connecting patterns are also an important factor that influences the subsurface fluid flow. Distributary channel sandbodies, which are always with larger scale and better petrophysical, are not rich in remaining oil; gravity sandbodies and over-bank sandbodies are rich in remaining oil for its smaller scale and poorer petrophysical properties. Small scaled mouth-bar sandbodies can also be rich in remaining oil if they are not controlled by present well-net. Sheet-like sandbodies are also rich in remaining oil for its poor properties though they are always widely spread. There are two types of remaining oil distribution pattern, one of which is mainly in little sandbodies which are not controlled well by well net, and the other is mainly in the poor sanbodies auch as sheet-like sandbody.

Key words: Geological data base, Reservoir architecture, Connecting pattern, Remaining oil, Mature oil field.

中图分类号:

TE112.23

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