准噶尔盆地金龙2地区佳木河组古地貌特征和油气藏分布关系研究  

Relationship between Jiamuhe paleogeomorphic features and hydrocarbon distribution of Jinlong-2 area in Junggar basin

作　　者：杨荣荣[1,2] 周路[1,3] 房涛 韩宝[2] 魏利燕[2] 

机构地区：[1]西南石油大学地球科学与技术学院,成都610500 [2]新疆油田公司勘探开发研究院,克拉玛依834000 [3]西南石油大学油气藏地质及开发工程国家重点实验室,成都610500 [4]中国石油西部钻探测井公司,克拉玛依834000

出　　处：《地球物理学进展》2016年第5期2219-2225,共7页Progress in Geophysics

基　　金：国家重点基础研究发展计划(973计划)资助项目(国家级:2015CB250900)资助

摘　　要：综合利用三维地震、钻井和测井等资料,通过地震层拉平法和印模法进行佳木河组古地貌恢复.在分析古地貌特征和油气藏分布关系基础上,系统总结了古地貌对油气藏的控制作用.研究结果表明:金龙2地区二叠系佳木河组古地貌整体呈现出"凹—隆—坡"的格局,不但控制着佳木河组沉积类型和岩性,同时控制着优质储层的发育和展布,古地貌较高部位为油气优先聚集部位,同时受长时间风化淋滤及后期构造运动影响,形成溶蚀孔和裂缝发育的双重孔隙介质储集岩,为油气的聚集成藏提供了空间,是油气勘探的有利区域.在此思路指导下,取得金龙2地区勘探的重大突破,发现整装油田,对准噶尔盆地西北缘和类似区块的油气勘探有着积极的指导意义.Paleogeomorphology of the Jiamuhe Formation was reconstructed by using the methods of seismic horizon flatten and impression with 3D seismic, drilling, and well logging data. Based on analysis of relationship between paleogeomorphie features and distribution of hydrocarbon reservoirs, controlling effects of the paleogeomorphology on hydrocarbon reservoirs was summarized. The results of this study indicate the paleogeomorphology of the Jiamuhe Formation in the Jinlong-2 area showing the pattern of ＂sag-uplift- slope＂, which not only controlled the sedimentary types and lithology of the Jiamuhe Formation, but also controlled the development and distribution of the high quality reservoirs. The higher position of the paleogeomorphology was prioritized for hydrocarbon accumulation, which was also affected by long period weathering and post tectonic movements. The dual pore type reservoirs with dissolution pores and fractures provided space for oil and gas accumulation, which were the favorable area for oil and gas exploration. Under the guidance of this idea, a major breakthrough of exploration for discovering uncompartmentalized oilfield has been made in the Jinlong-2 area, which has a positive significance for the oil and gas exploration in the northwestern margin ~f the Junggar Basin and the similar blocks.

关 键 词：金龙2地区 佳木河组 古地貌 油气藏分布 

分 类 号：P631[天文地球—地质矿产勘探]