塔里木盆地走滑断裂分段性及控藏作用——以FⅠ17断裂带为例
Segmentation of Strike-Slip Faults and Its Controls on Hydrocarbon Accumulation in Tarim Basin:A Case Study of FⅠ17 Strike-Slip Fault Zone
熊昶 1沈春光 2赵星星 3赵龙飞 2李盛谦 2周杰 2潘天凑3
作者信息
- 1. 中国石油 塔里木油田分公司 油气田产能建设事业部,新疆 库尔勒 841099;中国地质大学(武汉)资源学院,武汉 430074;中国石油天然气集团有限公司 超深层复杂油气藏勘探开发技术研发中心,新疆 库尔勒 841000;新疆维吾尔自治区超深层复杂油气藏勘探开发工程研究中心,新疆 库尔勒 841000
- 2. 中国石油 塔里木油田分公司 勘探开发研究院,新疆 库尔勒 841099;中国石油天然气集团有限公司 超深层复杂油气藏勘探开发技术研发中心,新疆 库尔勒 841000;新疆维吾尔自治区超深层复杂油气藏勘探开发工程研究中心,新疆 库尔勒 841000
- 3. 中国石油 塔里木油田分公司 油气田产能建设事业部,新疆 库尔勒 841099;中国石油天然气集团有限公司 超深层复杂油气藏勘探开发技术研发中心,新疆 库尔勒 841000;新疆维吾尔自治区超深层复杂油气藏勘探开发工程研究中心,新疆 库尔勒 841000
- 折叠
摘要
塔里木盆地奥陶系碳酸盐岩发育走滑断裂断控特大型油气田,但沿走滑断裂带碳酸盐岩储集层与油气分布异常复杂,制约了井位部署与油气高效开发.以富油气FⅠ17走滑断裂带为例,利用高精度地震资料,对FⅠ17走滑断裂带开展精细构造解析,结合岩心、测井及生产资料分析,对其储集层分布及控藏特征进行研究.结果表明:FⅠ17走滑断裂带从南至北依次可划分为平行雁列段、线性段、叠覆段、斜列叠覆段和马尾段5个区段;走滑断裂的分布、规模与类型控制了储集层分布与发育程度,从平行雁列段至斜列叠覆段断裂发育强度增大,储集层规模增大且连通性变好,北部马尾段储集层沿分支断裂分布,连通性差;FⅠ17走滑断裂带断控油气藏可划分为线性定容型、连接叠覆型、叠覆断垒型和尾段分散型4类;走滑断裂的类型与规模控制了油气藏类型与油气富集程度,针对不同类型的断控油气藏,需要采取不同的钻探措施.
Abstract
In the Ordovician carbonate rocks in the Tarim basin,there are extra-large oil and gas oilfields controlled by strike-slip faults.However,the distributions of carbonate reservoirs and hydrocarbons along the fault zones is extraordinarily complex,posing challenges for well deployment and efficient petroleum development.Taking the FⅠ17 hydrocarbon-rich strike-slip fault zone as an example,a fine struc-tural analysis was conducted by using high-resolution seismic data.Coupling with core,logging and production data,the reservoir distribu-tion and its controls on hydrocarbon accumulation were investigated.The results show that the FⅠ17 strike-slip fault zone can be divided in-to five segments from south to north:parallel en echelon segment,linear segment,superimposed segment,oblique superimposed segment,and horse-tail segment.The distribution,scale,and type of strike-slip faults govern the reservoir distribution and development.From the parallel en echelon segment to the oblique superimposed segment,the fault development intensifies,resulting in larger and more intercon-nected reservoirs.Conversely,the horse-tail segment in the north features reservoirs distributed along branch faults with poor connectivity.The fault-controlled hydrocarbon reservoirs in the FⅠ17 strike-slip fault zone can be classified into four types:linear fixed-volume,connect-ed superimposed,superimposed fault-block,and tail-end dispersed.The type and scale of strike-slip faults control the reservoir types and hydrocarbon enrichment levels,necessitating targeted drilling strategies for different fault-controlled reservoir types.
关键词
塔里木盆地/奥陶系/碳酸盐岩/走滑断裂/断裂分段/断裂控储/断裂控藏Key words
Tarim basin/Ordovician/carbonate rock/strike-slip fault/fault segmentation/fault-controlled reservoir/fault control on hydro-carbon accumulation引用本文复制引用
基金项目
国家科技重大专项(2016ZX05051)
出版年
2024
NETL
NSTL
万方数据