储气库运行上限压力的确定方法及在板中北储气库的应用

闫萍; 靳叶军; 袁雪花; 宿鹤松; 常进宇; 曾静波; 张凤生; 蔡洪波

doi:10.3969/j.issn.1006-6535.2024.04.010

特种油气藏 >

2024 , Vol. 31 >Issue 4: 81 - 88

DOI: https://doi.org/10.3969/j.issn.1006-6535.2024.04.010

地质勘探

储气库运行上限压力的确定方法及在板中北储气库的应用

闫萍 ,
靳叶军 ,
袁雪花 ,
宿鹤松 ,
常进宇 ,
曾静波 ,
张凤生 ,
蔡洪波

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1.中国石油集团测井有限公司,陕西西安 710077;
2.东北石油大学,黑龙江大庆 163318;
3.中国石油大港油田分公司,天津 300280;
4.中国石油辽河油田分公司,辽宁盘锦 124010

闫萍(1981—),女,高级工程师,2004年毕业于石油大学(华东)勘查技术与工程专业,2007年毕业于中国石油大学(华东)地球探测与信息技术专业,获硕士学位,现主要从事储气库密封性研究工作。

收稿日期: 2023-09-12

修回日期: 2024-04-03

网络出版日期: 2024-09-20

基金资助

国家自然科学基金“断裂对页岩油富集控制作用研究——以松辽盆地南部青一段页岩油为例”(U20A2093)

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Method of Determining the Upper Limit Pressure of Gas Storage Operation and Its Application in the Banzhongbei Gas Storage

Yan Ping ,
Jin Yejun ,
Yuan Xuehua ,
Su Hesong ,
Chang Jinyu ,
Zeng Jingbo ,
Zhang Fengsheng ,
Cai Hongbo

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1. China National Logging Corporation, Xi'an, Shaanxi 710077, China;
2. Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
3. PetroChina Dagang Oilfield Company, Tianjin 300280, China;
4. PetroChina Liaohe Oilfield Company, Panjin, Liaoning 124010, China

Received date: 2023-09-12

Revised date: 2024-04-03

Online published: 2024-09-20

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摘要

大港油田板中北储气库位于板桥断层上升盘,为断层切割的半背斜构造,属于断块型储气库,断层和盖层的承压能力决定了储气库运行的上限压力。针对缺乏考虑力学完整性的储气库上限压力的研究现状,从地质力学角度出发,综合三维地震解释成果、XMAC测井地应力解释成果、岩石力学测试等资料,基于岩石脆性破裂理论对研究区盖层的水力封闭能力和断层的稳定性进行了评价,以确定考虑力学完整性的储气库安全运行上限压力。结果表明:板中北储气库盖层水力封闭能力上限为39.30 MPa,断层稳定性薄弱点位于2条断层的交叉位置,最小活化压力为30.57 MPa;综合盖层水力封闭能力上限和断层稳定性可知,板中北储气库运行上限压力为30.57 MPa,而设计运行上限压力为30.50 MPa,设计较为合理。研究成果对于储气库上限压力的设计具有指导意义。

关键词： 盖层; 水力封闭能力; 断层稳定性; 上限压力; 板中北储气库; 大港油田

本文引用格式

闫萍 , 靳叶军 , 袁雪花 , 宿鹤松 , 常进宇 , 曾静波 , 张凤生 , 蔡洪波 . 储气库运行上限压力的确定方法及在板中北储气库的应用[J]. 特种油气藏, 2024 , 31(4) : 81 -88 . DOI: 10.3969/j.issn.1006-6535.2024.04.010

Abstract

The Banzhongbei Gas Storage in the Dagang Oilfield is located on the upcast side of the Banqiao Fault, which is a fault block gas storages and a semi-anticlinal structure cut by faults. The loading capacity of faults and capping formation determines the high limit pressure for the gas storage operation. To address the lack of consideration of mechanical integrity in determining the upper limit pressure of gas storage operation, this study evaluates the hydraulic sealing ability of the cap rock and the stability of faults in the study area from the perspective of geomechanics. This evaluation is based on comprehensive data including 3D seismic interpretation results, XMAC logging stress interpretation results, and rock mechanics tests. It utilizes the theory of rock brittle fracture to determine the upper limit pressure for the safe operation of gas storage considering mechanical integrity. The results show that the upper limit pressure of the hydraulic sealing capacity of the cap rock in the Banzhongbei Gas Storage is 39.30 MPa, and the weak point of fault stability is at the intersection of two faults with a minimum activation pressure of 30.57 MPa. By considering the upper limit of cap rock hydraulic sealing capacity and fault stability, the upper limit pressure for the operation of the Banzhongbei Gas Storage is determined to be 30.57 MPa, which is reasonably close to the design operating upper limit pressure of 30.50 MPa. The research findings have significant guiding for the design of upper limit pressure for gas storage operation.

Key words： cap rock; hydraulic sealing capacity; fault stability; high limit pressure; Banzhongbei Gas Storage; Dagang Oilfield

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