海洋地质前沿2017，Vol.33Issue(10)：40-48,9.DOI:10.16028/j.1009-2722.2017.10005
古近系油气初次运移有效性的主控因素——以珠江口盆地西江A和西江B构造圈闭油气勘探效果对比为例
THE MAIN CONTROL FACTORS ON EFFECTIVE PALEOGENE PRIMARY OIL AND GAS MIGRATION:A COMPARATIVE STUDY OF EXPLORATION RESULTS FROM XIJIANG A AND XIJIANG B STRUCTURAL TRAPS,ZHUJIANGKOU BASIN
摘要
Abstract
Based upon the exploration data from the major Xijiang depression,we put forward in this paper the two concepts of effective primary migration and effective primary migration area.The effective primary migration of oil and gas depends upon the capability of remigration or secondary migration of oil and gas after charging into the sand body close to the source rocks.The effectiveness is depending on two main factors:one is the occurrence of large-scale sand body near the hydrocarbon source rock and the other is the availability of coarse pore throats within the sand body.The former will decide if there is enough oil and gas for effective primary migration,the latter determines the priority of filling direction of oil and gas.Based on this working hypothesis,we made a comparison between the Xijiang A and Xijiang B structural traps with the exploration results available and discussed the failure of exploration in the Xijiang A region.The conclusion may help further understanding the Paleogene hydrocarbon accumulation in this region and provide a case for the endeavor to look for similar reservoirs.关键词
初次运移/烃源岩/规模性砂体/粗孔喉/古近系Key words
primary migration/hydrocarbon source rocks/large-scale sand body/coarse pore throat/Paleogene分类
天文与地球科学引用本文复制引用
刘道理,杜忠明,许新明,吴静,张琴,陶禹,董伟,陈胜红..古近系油气初次运移有效性的主控因素——以珠江口盆地西江A和西江B构造圈闭油气勘探效果对比为例[J].海洋地质前沿,2017,33(10):40-48,9.基金项目
国家重大专项“南海东部海域勘探新领域及关键技术”(2016ZX05024-004) （2016ZX05024-004）
