塔里木盆地台盆区走滑断裂带多层叠加样式及石油地质意义  

Multilayer Superimposition Patterns of Strike-Slip Fault Zones and Their Petroleum Geological Significance in Platform Area,Tarim Basin

作　　者：杨海军[1,2,3] 能源 邵龙飞 谢舟 康鹏飞 袁敬一[2,3,6] 付永红 YANG Haijun;NENG Yuan;SHAO Longfei;XIE Zhou;KANG Pengfei;YUAN Jingyi;FU Yonghong(Tarim Oilfield Company,PetroChina,Korla,Xinjiang 841000,China;R&D Center for Ultra-Deep Complex Reservior Exploration and Development,CNPC,Korla,Xinjiang,841000,China;Xinjiang Engineering Research Center for Ultra-Deep Complex Reservoir Exploration and Development,Korla,Xinjiang 841000,China;School of Petroleum,Karamay Campus,China University of Petroleum(Beijing),Karamay,Xinjiang 834000,China;School of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China;Research Institute of Exploration and Development,Tarim Oilfield Company,PetroChina,Korla,Xinjiang 841000,China)

机构地区：[1]中国石油塔里木油田分公司,新疆库尔勒841000 [2]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 [3]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 [4]中国石油大学(北京)克拉玛依校区石油学院,新疆克拉玛依834000 [5]中国石油大学(北京)地球科学学院,北京102249 [6]中国石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000

出　　处：《新疆石油地质》2024年第4期387-400,共14页Xinjiang Petroleum Geology

基　　金：国家自然科学基金(42362026);新疆维吾尔自治区自然科学基金(2021D01A199)。

摘　　要：随着塔里木盆地油气勘探的不断深入,在台盆区古生界发现大规模走滑断裂系统,提出了一种新型断溶体油气藏。受塔里木盆地多期构造运动的影响,走滑断裂表现出多层结构,具有多期叠加活动特征。基于高品质三维地震资料、钻井资料及油气地质资料,对塔里木盆地大型走滑断裂的多层叠加特征及对油气的控制作用展开研究。研究结果表明:塔里木盆地台盆区走滑断裂带在古生界主要发育5个结构层,分别为下寒武统盐下构造层、中寒武统盐构造层、上寒武统—中奥陶统碳酸盐岩构造层、上奥陶统—石炭系碎屑岩构造层和二叠系岩浆岩构造层;受多期构造运动及走滑断裂带活动的影响,5层结构在空间上具有带状分布、垂向叠置、差异叠加的特征;断裂叠加类型多样,总体上可以分为连接型、叠接型、反转叠加型及反转改造型4种;走滑断裂带叠加方式影响了石油地质条件,可形成多层差异聚集油气藏,主要包括Ⅰ型油气藏(奥陶系碳酸盐岩油气藏)、Ⅱ型油气藏(奥陶系碳酸盐岩油气藏、志留系碎屑岩油气藏及二叠系岩浆岩油气藏)及Ⅲ型油气藏(寒武系盐下层白云岩油气藏)3种类型。In recent years,with the progress of oil and gas exploration in the Tarim basin,large-scale strike-slip fault systems have been discovered in the Paleozoic strata of the platform area in the basin and a new type of fault-karst reservoir has been identified.Due to multiple tectonic movements in the basin,these strike-slip faults exhibit multilayer structures featured with multiple phase superimposition.Based on high-quality 3D seismic data,drilling data,and petroleum geological data,the multilayer superimposition of large-scale strike-slip faults in the basin and its controls over hydrocarbon accumulation were investigated.The research results show that the strike-slip fault zones in the platform area of the Tarim basin primarily develop five structural layers in the Paleozoic:Lower Cambrian pre-salt structural layer,Middle Cambrian salt structural layer,Upper Cambrian–Middle Ordovician carbonate structural layer,Upper Ordovician–Carboniferous clastic structural layer,and Permian magmatite structural layer.Affected by multiple tectonic movements and strike-slip fault activities,these layers exhibit characteristics of banded spatial distribution,vertical superposition,and differential superimposition.The superimposition patterns can be broadly categorized into four types:connection,overlapping,inverse superimposition,and inverse reformation.These superimposition patterns have significant impacts on hydrocarbon accumulation,and three types of reservoirs such as TypeⅠ(Ordovician carbonate reservoirs),TypeⅡ(Ordovician carbonate,Silurian clastic,and Permian magmatite reservoirs),and TypeⅢ(Cambrian pre-salt dolomite reservoirs)are formed.

关 键 词：塔里木盆地 台盆区 走滑断裂带 多层结构 构造样式 叠加类型 成因机制 成藏模式 

分 类 号：TE121.2[石油与天然气工程—油气勘探]