成都理工大学学报（自然科学版）2017，Vol.44Issue(1)：36-42,7.DOI:10.3969/j.issn.1671-9727.2017.01.05
鄂尔多斯盆地周家湾长6和长8油层组成藏控制因素
Controlling factors of hydrocarbon accumulation in Chang-6 and Chang-8 reservoirs of Yanchang Formation in Zhouj iawan block,Ordos Basin,China
摘要
Abstract
The pool-forming model and controlling factors of Chang-6 and Chang-8 oil-bearing layers of Triassic Yanchang Formation in Zhoujiawan area of Ordos Basin were investigated by analyzing the influence of generation and expulsion of hydrocarbon of source rock on hydrocarbon accumulation. Also,the differences of deposition and diagenesis of reservoir,and the differences of pool-forming process were studied and summarized.It shows that the large scale oil source rock of Chang-7 supplied the oil source and driving force,the connectivity of sand bodies and structure fractures supplied the migration passageway for the oil and gas,the large scale overriding sand bodies played a role in the formation of favorable reservoir rock, the difference of deposition and diagenesis leaded to the formation of relative high porosity and permeability reservoir and controlled the enrichment area of oil pool.It revealed that the oil from the Chang-7 oil source rock firstly migrated upward to the Chang-6 reservoir,then migrated horizontally through the connective sand bodies to the place far away from Chang-7 oil source rock,forming large scale oil pool along the north-east direction sand bodies.For the oil pools of Chang-8 ,the oil from the Chang-7 oil source rock mainly migrated downward to Chang-8 ,but the scale of second horizontal migration was limited and therefore,the area of oil pool of Chang-8 was small.关键词
延长组/成藏控制因素/成藏模式/周家湾/鄂尔多斯盆地Key words
Yanchang Formation/controlling factors of oil pool/pool-forming model/Zhouj iawan/Ordos Basin分类
能源科技引用本文复制引用
任瑞清,朱静,史立川,王维斌,淡卫东,梁晓伟..鄂尔多斯盆地周家湾长6和长8油层组成藏控制因素[J].成都理工大学学报（自然科学版）,2017,44(1):36-42,7.基金项目
国家自然科学基金重大项目（41390451）；“十三五”国家油气重大专项（2016ZX05046）；国家“973”项目（2014CB239003）。 （）
