控藏断层再活动风险性分析方法及其应用——以辽河油田锦150油藏为例  

Risk Analysis Method for Reactivation of Fault with Control Effect on Oil Reservoir and Its Application:Taking Jin 150 Oil Reservoir in Liaohe Oilfield as an Example

作　　者：杨海燕 王有功[1] 姚睿[3] 蔡超[3] 姜越[3] 傅巍[3] 郝博洋[3] 王超 YANG Haiyan;WANG Yougong;YAO Rui;CAI Chao;JIANG Yue;FU Wei;HAO Boyang;WANG Chao(Northeast Petroleum University,Daqing,Heilongjiang 163318,China;Guangdong University of Petrochemical Technology,Maoming,Guangdong 525000,China;PetroChina Liaohe Oilfield Company,Panjin,Liaoning 124010,China)

机构地区：[1]东北石油大学,黑龙江大庆163318 [2]广东石油化工学院,广东茂名525000 [3]中油辽河油田公司,辽宁盘锦124010

出　　处：《西安石油大学学报（自然科学版）》2024年第3期12-20,共9页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家自然科学基金“多期裂陷盆地复杂断层体系成因演化研究”(42172162)。

摘　　要：在油藏注采开发过程中,因流体注入使油藏内部压力系统发生紊乱,会导致侧向遮挡油气富集的静态地质条件被破坏,即断层发生再活化现象,致使原油泄漏,造成环境污染或产量下降等问题,为了避免这种现象发生,本文以锦150油藏为例,采用井震资料结合的方式,构建断层和地层三维地质模型,并以断层再活化机制及影响因素分析为基础,结合地应力场和地层压力特征,来定量表征锦150油藏断层再活化压力大小。结果表明:锦150区块在ZⅡ^(1)、ZⅡ^(2)、ZⅡ^(3)油层附加流体压力阈值不超过7.3 MPa、7.5 MPa及7.7 MPa时,断层发生再活动的风险性小;通过应用效果分析证实,在现有注采压力下油藏保存条件不会被破坏,断层不会发生失稳现象。In injection development process of oil reservoirs,injection of fluid can disrupt the internal pressure system of the oil reservoir,leading to the destruction of static geological conditions that laterally block oil and gas accumulation.This can cause reactivation of the faults,resulting in crude oil leakage,environmental pollution,or decreased production.To avoid this phenomenon,taking Jin 150 reservoir as an example,a three-dimensional geological model of formation with faults was established based on well data and seismic data,and the reactivation pressure of faults in the Jin 150 oil reservoir is quantitatively characterized by analyzing the mechanism and influence factors of fault reactivation and the characteristics of geostress field and formation pressure.The results show that the risk of fault reactivation is low when the additional fluid pressure thresholds of the ZⅡ^(1),ZⅡ^(2),and ZⅡ^(3)oil layers in the Jin 150 block do not exceed 7.3 MPa,7.5 MPa,and 7.7 MPa.The application results confirm that under the existing injection production pressure,the preservation conditions of the oil reservoir will not be disrupted,and there will be no instability of the fault.

关 键 词：断层再活化压力 地应力场分析 地层压力场 断层岩类型 风险评价 

分 类 号：TE347[石油与天然气工程—油气田开发工程]