Whole petroleum system and hydrocarbon accumulation model in shallow and medium strata in northern Songliao Basin,NE China  

作　　者：ZHANG He WANG Xiaojun JIA Chengzao LI Junhui MENG Qi’an JIANG Lin WANG Yongzhuo BAI Xuefeng ZHENG Qiang 

机构地区：[1]PetroChina Daqing Oilfield Company Limited,Daqing 163458,China [2]China National Petroleum Corporation,Beijing 100724,China [3]Exploration and Development Research Institute of PetroChina Daqing Oilfield Company Limited,Daqing 163712,China [4]PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China [5]Exploration Department of PetroChina Daqing Oilfield Company Limited,Daqing 163453,China

出　　处：《Petroleum Exploration and Development》2023年第4期784-797,共14页石油勘探与开发（英文版）

基　　金：Supported by the PetroChina Major Science and Technology Project (2016E0201,2021ZZ10,2021DJ0101)。

摘　　要：Based on the oil and gas exploration practice in the Songliao Basin,combined with the latest exploration and development data such as seismic,well logging and geochemistry,the basic geological conditions,oil and gas types and distribution characteristics,reservoir-forming dynamics,source-reservoir relationship and hydrocarbon accumulation model of the whole petroleum system in shallow and medium strata in the northern part of Songliao Basin are systematically studied.The shallow-medium strata in northern Songliao Basin have the conditions for the formation of whole petroleum system,with sufficient oil and gas sources,diverse reservoir types and well-developed transport system,forming a whole petroleum system centered on the source rocks of the Cretaceous Qingshankou Formation.Different types of oil and gas resources in the whole petroleum system are correlated with each other in terms of depositional system,lithologic association and physical property changes,and they,to a certain extent,have created the spatial framework with orderly symbiosis of shallow-medium conventional oil reservoirs,tight oil reservoirs and shale oil reservoirs in northern Songliao Basin.Vertically,the resources are endowed as conventional oil above source,shale oil/tight oil within source,and tight oil below source.Horizontally,conventional oil,tight oil,interlayer-type shale oil,and pure shale-type shale oil are developed in an orderly way,from the margin of the basin to the center of the depression.Three hydrocarbon accumulation models are recognized for the whole petroleum system in northern Songliao Basin,namely,buoyancy-driven charging of conventional oil above source,retention of shale oil within source,and pressure differential-driven charging of tight oil below source.

关 键 词：Songliao Basin super basin whole petroleum system conventional oil reservoir tight oil shale oil hydrocarbon accumulation model orderly distribution differential accumulation 

分 类 号：TE34[石油与天然气工程—油气田开发工程]