改进的砂泥岩地层中断裂封闭性评价SGR法及应用

朱焕来; 王卫学; 付广; 孙月

doi:10.3969/j.issn.1006-6535.2024.04.011

特种油气藏 >

2024 , Vol. 31 >Issue 4: 89 - 95

DOI: https://doi.org/10.3969/j.issn.1006-6535.2024.04.011

地质勘探

改进的砂泥岩地层中断裂封闭性评价SGR法及应用

朱焕来 ,
王卫学 ,
付广 ,
孙月

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1.东北石油大学,黑龙江大庆 163318;
2.多资源协同陆相页岩油绿色开采全国重点实验室,黑龙江大庆 163318;
3.中国石油大庆油田有限责任公司,黑龙江大庆 163511

朱焕来(1977—),男,副教授,2001年毕业于大庆石油学院石油天然气地质与勘查专业,2011年毕业于东北石油大学油气田地质工程专业,获博士学位,现主要从事油气地质教学和科研工作。

收稿日期: 2024-04-10

修回日期: 2024-05-19

网络出版日期: 2024-09-20

基金资助

国家自然科学基金“断砂配置侧向分流运聚油气机理及有利部位识别研究”(42072157)

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The Advanced SGR Method for Fracture Closure Evaluation in Arenaceous Shale Formation and Its Application

Zhu Huanlai ,
Wang Weixue ,
Fu Guang ,
Sun Yue

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1. Northeast Petroleum University,Daqing,Heilongjiang 163318,China;
2. Multi-Resource Collaborative Continental Shale Oil Green Extraction National Key Laboratory,Daqing,Heilongjiang 163318,China;
3. PetroChina Daqing Oilfield Co.,Ltd,Daqing,Heilongjiang 163511,China

Received date: 2024-04-10

Revised date: 2024-05-19

Online published: 2024-09-20

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摘要

SGR法评价断裂在砂泥岩地层中侧向封闭性时,通常采用统计得到的常数作为下限值,导致评价结果与勘探实践存在着较大的偏差。针对上述问题,采用断裂倾角、断层岩压实成岩时间、目的储层泥质含量和压实成岩时间,确定断裂在砂泥岩地层中侧向封闭所需的最小断层岩泥质含量。研究表明:最小断层泥质含量是基于封闭机理所求的一个变值,解决了SGR法统计采用常数值存在偏差的问题,有效提高了侧向封闭性评价的准确性。将该方法应用于海拉尔盆地贝尔凹陷西部呼和诺尔构造带F3断裂在南二段砂泥岩储层的侧向封闭性评价,获得了测点5、7、8和12—15处F3断裂在南二段砂岩储层内侧向封闭,而其余测点处侧向不封闭的重要认识。该认识与油气主要分布在测点7、8、12、14处的情况吻合。研究成果对含油气盆地砂泥岩地层断层型油气藏分布特征及指明油气勘探方向具有重要借鉴意义。

关键词： 断裂; 砂泥岩地层; 侧向封闭性; SGR法; 海拉尔盆地

本文引用格式

朱焕来 , 王卫学 , 付广 , 孙月 . 改进的砂泥岩地层中断裂封闭性评价SGR法及应用[J]. 特种油气藏, 2024 , 31(4) : 89 -95 . DOI: 10.3969/j.issn.1006-6535.2024.04.011

Abstract

When evaluating the lateral closure performance of fractures in arenaceous shale formation,The SGR uses a constant derived from statistics as the lower limit,which leads to a significant deviation between the evaluation results and exploration practice.In view of the aforementioned issue,the minimum shale content of fault rock required for lateral closure of faults in arenaceous shale formation is determined by using fault dip angle,diagenetic time of fault rock compaction,shale content of target reservoir and diagenesistime of compaction.The results show that the minimum shale content of fault rock is a variable value based on the closure mechanism,which addresses the issue of insufficient constant value in SGR method and effectively improves the accuracy of lateral closure evaluation.This method has been applied to the evaluation of the lateral closure of the arenaceous shale reservoir in the southern section-2 of the F3 fault in the Huhenuoer tectonic zone of the western Beier Depression in the Hailar Basin,and the finds are as follows:at measuring points 5,7,8 and 12-15,the F3 fault closes laterally towards the inner side of the sandstone reservoir in the southern section-2,while at the remaining measuring points,it does not close laterally,which is consistent with the main distribution of oil and gas observed at measurement points 7,8,12 and 14.The research results are of great reference significance for the distribution characteristics of fault-type oil and gas reservoirs in arenaceous shale formation of oil and gas bearing basins,and indicate the direction of oil and gas exploration.

Key words： fracture; arenaceous shale formation; lateral closure; SGR method; Hailar Basin

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