准噶尔盆地盆1井西凹陷东斜坡侏罗系三工河组油气成藏特征及控制因素  

Characteristics of hydrocarbon accumulation and its controlling factors in Jurassic Sangonghe Formation in the east slope of Well Pen-1 Western Depression in Junggar Basin

作　　者：费李莹 王仕莉[1] 苏昶 刘钰 江祖强[1] 杨梦云[1] 李勇广[1] 彭海军[1] FEI Liying;WANG Shili;SU Chang;LIU Yu;JIANG Zuqiang;YANG Mengyun;LI Yongguang;PENG Haijun(Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Karamay 834000,China;Well Testing Company,Xibu Drilling Engineering Company Limited,CNPC,Karamay 834000,China)

机构地区：[1]中国石油新疆油田公司勘探开发研究院,新疆克拉玛依834000 [2]中国石油西部钻探工程有限公司试油公司,新疆克拉玛依834000

出　　处：《天然气地球科学》2022年第5期708-719,共12页Natural Gas Geoscience

基　　金：中国石油天然气集团有限公司科技重大专项“准噶尔盆地天然气藏主控因素及关键技术研究与应用”(编号:2017E-0403)资助.

摘　　要：准噶尔盆地盆1井西凹陷东斜坡前哨2井在侏罗系三工河组获高产工业气流,开辟了斜坡区三工河组天然气勘探高效领域。为进一步明确该区三工河组油气藏主控因素和油气富集规律,深化三工河组油气勘探,在已钻探井基础上,综合应用岩心、实验分析和地震等资料,对三工河组油气藏类型、成藏特征和控制因素进行研究。结果表明:东斜坡侏罗系三工河组油气主要来源于盆1井西凹陷二叠系下乌尔禾组烃源岩;该区发育深、中、浅3期断裂,垂向上呈“Y”字型组合,配置关系良好,为油气从深层向浅层侏罗系运移提供了良好的输导条件,海西期大型断裂带控制了侏罗系油气的平面分布;三工河组油气藏类型为构造岩性和岩性型油气藏,受古地貌、沉积相带和断裂等因素共同控制,具有“烃源岩供烃、多期断裂接力输导、古地貌控带、凹槽控砂、断裂—砂体控藏”的成藏特征。High production of industrial gas in the Jurassic Sangonghe Formation has been obtained in Well Qianshao 2 in the east slope of Well Pen-1 Western Depression,which opens an efficient field of natural gas exploration of slope area. To further determine the main controlling factors and the law of hydrocarbon enrichment,and to deepen the oil and gas exploration of Sangonghe Formation in the region,data from boreholes,cores,experimental analysis and seismology were comprehensively applied to analyze the reservoir types,accumulation characteristics and controlling factors. The study shows that the oil and gas of the Sangonghe Formation mainly migrated from the source rock in the Lower Wuerhe Formation of Permian in the Well Pen-1 Western Depression. There are three stages of faults developed in this area,the third stage faults are in the shape of“Y”in the vertical direction and have a good configuration relationship,which provide good transportation conditions for oil and gas migration from deep strata to shallow Jurassic Sangonghe Formation. The large fault zones in Hercynian Period controlled the plane distribution of Jurassic oil and gas. The reservoir types in the study area are structural-lithologic type and lithologic type,which are controlled by paleogeomorphology,sedimentary facies and faults. The model of hydrocarbon reservoir formation is characterized by“source rock supplying hydrocarbon,multi-stage faults relaying transporting,paleogeomorphology controlling belt,groove controlling sand,faults and sand body controlling reservoir”.

关 键 词：准噶尔盆地 盆1井西凹陷东斜坡 三工河组 成藏特征 控制因素 

分 类 号：TE122.1[石油与天然气工程—油气勘探]