新和——三道桥地区古近系——白垩系油气藏形成条件及控制因素  

Formation conditions and controlling factors of Paleogene-Cretaceous oil and gas reservoirs in the Xinhe-Sandaoqiao area

作　　者：康仁东[1] 王铭伟 吴玟 李松[4] KANG Rendong;WANG Mingwei;WUWen;LI Song(Exploration and Development Research Institute of Northwest Oilfield Branch of Sinopec,Urumqi 830000,China;College of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu 610500,China;CNPC Southwest Oil and Gas Field Company,Chengdu 610051,China;Engineering Research Institute of CNPC Southwest Oil and Gas Field Company,Chengdu 610017,China)

机构地区：[1]中国石油化工股份有限公司西北油田分公司勘探开发研究院,新疆乌鲁木齐830000 [2]西南石油大学石油与天然气工程学院,四川成都610500 [3]中国石油西南油气田分公司开发事业部,四川成都610051 [4]中国石油西南油气田分公司工程技术研究院,四川成都610017

出　　处：《复杂油气藏》2022年第4期21-24,共4页Complex Hydrocarbon Reservoirs

基　　金：国家自然科学基金“多场耦合条件下甲烷/二氧化碳在页岩非均质储层中的动力学特征研究”(41772150)。

摘　　要：新和—三道桥地区古近系—白垩系已成为塔里木盆地北部重点勘探层系。针对该地区古近系—白垩系油气成藏条件及其主控因素等问题,通过烃源岩特征、储盖层组合、断裂及圈闭作用分析,明确了油气藏形成条件及控制因素。研究结果表明,该地区油源主要来自陆相三叠系—侏罗系的煤系烃源岩。盖层发育有三套,即古近系库姆格列木群及苏维依组泥岩、含膏泥岩和膏岩、白垩系下统巴西盖组上段泥岩及舒善河组泥岩。油气成藏主要受控于断层、圈闭和盖层,圈闭与盖层是关键因素,断裂带控制了油气的富集区域,圈闭控制了油气的聚集,盖层控制了油气藏保存状况。The Paleocene-Cretaceous system in the Xinhe-Sandaoqiao area has become a key exploration formation in the northern Tarim Basin.The formation conditions of oil and gas reservoirs and their main control factors in the Paleocene-Cretaceous system in this area are clarified through the analysis of hydrocarbon source rock characteristics,reservoir cap rock combination,fault,and trap.The research results show that the oil source in this area mainly comes from the coal-derived hydrocarbon rocks of the terrestrial TriassicJurassic system.There are three sets of developed caprocks:namely,mudstones of the Paleoproterozoic Kumgremu and Suwayi Formations,paste-bearing mudstones and paste rocks,mudstones of the upper part of the Lower Cretaceous Basigai Formation and mudstones of the Shushanhe Formation.The formation of oil and gas is mainly controlled by faults,traps,and caprocks,and the traps and caprocks are the key factors.The fault zones control the enrichment area of oil and gas,traps control the accumulation of oil and gas,and caprocks control the preservation of oil and gas reservoirs.

关 键 词：断裂 圈闭 储盖组合 油气成藏 古近系—白垩系 新和—三道桥 

分 类 号：TE122[石油与天然气工程—油气勘探]