超深层“断滩体”概念、地质模式及地震表征技术方法——以塔里木油田为例  

Concept,geological model and seismic characterization technique of ultra-deep"fault shoal body":a case study of Tarim Oilfield

作　　者：张银涛[1] 常少英 谢舟[1] 罗枭[1] 王孟修 杜一凡 ZHANG Yintao;CHANG Shaoying;XIE Zhou;LUO Xiao;WANG Mengxiu;DU Yifan(Research Institute of Exploration and Development,Tarim Oilfield Company,PetroChina,Korla 841000,China;Hangzhou Research Institute of Geology,PetroChina,Hangzhou 310023,China)

机构地区：[1]中国石油塔里木油田公司勘探开发研究院,新疆库尔勒841000 [2]中国石油杭州地质研究院,浙江杭州310023

出　　处：《断块油气田》2025年第1期108-117,共10页Fault-Block Oil & Gas Field

基　　金：中国石油天然气集团有限公司基础性前瞻性重大科技专项“叠合盆地中下组合油气成藏与保持机制研究”(2023ZZ02);中国石油天然气集团有限公司碳酸盐岩专项项目“碳酸盐岩油气富集规律及有利区带研究”(2023ZZ16YJ01)、“海相碳酸盐岩油气规模增储上产与勘探开发技术研究”(2023ZZ16YJ02)。

摘　　要：“断滩体”是塔里木盆地富满油田奥陶系超深层新型油藏类型,是超深层油气储量保持增长的有利接替勘探领域。以野外露头资料为基础,结合钻井、地震、生产动态等资料,建立了超深碳酸盐岩油气藏“断滩体”地质发育模式,并形成了超深碳酸盐岩“断滩体”地震刻画技术。研究结果表明:1)“断滩体”的形成机制为超深层灰岩台内滩体受主干断裂派生次序级网状断裂破碎作用改造形成。2)基于“断滩体”地质特征,采用波形指示反演识别滩体边界;利用地震子波分解、反射特征强化法识别低级序断裂;通过滩体与低级序断裂的融合,精细刻画出“断滩体”的边界及内部结构,是表征“断滩体”的有效手段。3)富满东部三维区鹰山组下段发育典型的“断滩体”,明确了“断滩体”圈闭范围,识别断滩体面积42.2 km^(2),勘探潜力较大。富东1井的成功突破,预示着富满油田新的控储模式的确立。超深层“断滩体”地震识别技术为其他地区类似储层的预测提供较好的借鉴意义。"Fault shoal body"is a new type of ultra-deep Ordovician reservoir in Fuman Oilfield,Tarim Basin,and is a favorable replacement exploration field for the growth of ultra-deep oil and gas reserves.On the basis of outcrop data,combined with drlling,seismic and production dynamic data,the"fault shoal body"geological development model of ultra-deep carbonate reservoir is established,and the seismic characterization technology of ultra-deep carbonate"fault shoal body"is formed.The research results indicate:(1)The formation mechanism of the"fault shoal body"is the transformation of the intra-platform shoal in the ultra-deep limestone by the fracturing of sequential grid-shaped faults derived from the main faults.(2)Based on the geological characteristics of"fault shoal body",the boundary of the shoal body is identified by using waveform indication inversion.Low-sequence faults are identified using seismic wavelet decomposition and reflection characteristics strengthening techniques.The boundary and internal structure of the"fault shoal body"can be finely characterized by the fusion of the shoal body and the low-sequence fault,which is an effective method to characterize the"fault shoal body".(3)A typical"fault shoal body"is developed in the lower member of Yingshan Formation in the three-dimensional area of eastern Fuman.The trap range of the"fault shoal body"is defined,and the area of the identified"fault shoal body"is 42.2 km^(2),which has great exploration potential.The successful breakthrough of Well Fudong 1 indicates the establishment of a new control model for reservoirs in Fuman Oilfield.The seismic identification technology of ultra-deep"fault shoal body"provides a good reference for the prediction of similar reservoirs in other areas.

关 键 词：超深层 断滩体 台内滩 子波分解 低级序断裂 

分 类 号：TE132.1[石油与天然气工程—油气勘探]