塔里木盆地多期改造-晚期定型复合构造与油气战略选区  

Poly-Phase Reform-Late-Stage Finalization Composite Tectonics and Strategic Area Selection of Oil and Gas Resources in Tarim Basin,NW China

作　　者：汤良杰[1,2] 邱海峻[3] 云露[4] 杨勇[1,2] 谢大庆[4] 李萌[1,2] 蒋华山[4] 

机构地区：[1]油气资源与探测国家重点实验室,北京102249 [2]中国石油大学(北京)盆地与油藏研究中心,北京102249 [3]国土资源部油气资源战略研究中心,北京100034 [4]中国石化西北油田分公司,乌鲁木齐830011

出　　处：《吉林大学学报（地球科学版）》2014年第1期1-14,共14页Journal of Jilin University：Earth Science Edition

基　　金：全国油气资源战略选区调查与评价国家专项(第二批)(2009GYXQ02-05);国家自然科学基金项目(41172125;40972090);国家"973"计划项目(2012CB214804;2005CB422107);中国石油化工股份有限公司项目(P11086);国家科技重大专项(2011ZX05002-003-001);中石化西北油田分公司项目(KY2010-S-053)

摘　　要：受关键构造变革期制约,叠合盆地具有分期差异变形特征。从变形角度分析,塔里木盆地可以追溯出5期主要的构造改造作用,即加里东中期、加里东晚期-海西早期、海西晚期、印支-燕山期和喜马拉雅期,并影响塔里木盆地的发展演化历史。通过对塔北、塔中和库车已知油气聚集区解剖表明:古生代多期改造形成的断裂、褶皱、隆升、剥蚀和岩溶作用,对台盆区巨型海相碳酸盐岩古岩溶油气藏的形成具有重要的控制作用;中、新生代多期改造过程,对前陆褶皱-冲断带大规模油气聚集成藏具有重要的控制作用;这些已知油气聚集区带都是在喜马拉雅晚期最终定型的,总体构成多期改造-晚期定型复合构造油气聚集模式。综合分析了塔里木新区分期差异构造变形特征,在此基础上,依据叠合盆地多期改造-晚期定型构造模式,对塔里木新区进行了区块评价和油气战略选区,认为巴楚隆起、麦盖提斜坡和西昆仑山前褶皱-冲断带是近期油气勘探突破的首选地区,塔东地区、塘古巴斯坳陷和阿瓦提断陷具有良好的油气勘探前景。The superimposed basin is of poly-phase differential structural deformation controlled by key tectonic stages . Five tectonic reform stages , that is mid-Caledonian , Late-Caledonian-Early Hercynian , Late-Hercynian , Indosinian-Yanshanian , and Himalayan , maybe recognized from deformation analysis in the Tarim basin .The development and evolution of the Tarim basin are affected by the main tectonic reform stages .According to the analysis of known oil-gas belts of northern Tarim uplift ,mid-Tarim uplift and Kuqa depression ,it is indicated that the huge marine carbonate paleo-karst oil-gas pools are controlled by the faulting and folding ,uplifting and erosion ,and karsting during the period of the Paleozoic tectonic reforms .A large number of hydrocarbon accumulation in the foreland fold-thrust belt are controlled by the Meso-Cenozoic tectonic reforming .All these known hydrocarbon accumulation zones are finalized at the Late-Himalayan movement ,forming hydrocarbon accumulation model of the poly-phase reform late-stage finalization composite tectonics .Analyzing the poly-phase differential structural deformation ,an evaluation and strategic selection of oil-gas resources in the new exploration areas of the Tarim basin have been made based on the above-mentioned model .It is proposed that the best new exploration regions are Bachu uplift ,Maigaiti slope and foreland fold-thrust belt on the west Kunlun Mountain footwall . And the eastern Tarim , Tangubasi depression and Awati fault-depression are of favorable oil-gas exploration prospects .

关 键 词：多期改造 晚期定型 复合构造 差异构造变形 油气战略选区 塔里木盆地 

分 类 号：P618.13[天文地球—矿床学]