摘要
为深化吐哈盆地吐鲁番坳陷西部富油气区侏罗系—古近系岩性油气藏精细勘探,以井-震匹配的四级层序格架建立为基础,系统开展了高分辨率层序格架约束下的精细沉积体系研究。结果表明:井-震匹配的四级层序格架单元是开展空间精细沉积体系研究的最大单元;层位与储层的两步标定是准确建立井-震匹配关系的关键步骤;等时层序格架内的地震反射横向变化分析是明确沉积体系横向对接和演变的核心。研究认为:北部天山和南部觉罗塔格造山带的差异构造活动是控制沉积体系横向变迁的主要因素;辫状河三角洲前缘水下分流河道是最主要的储集体类型;依附于古构造背景发育的河道侧向、上倾尖灭砂体是盆地西缘葡北、葡萄沟、神泉、胜南地区岩性油气藏扩展勘探的有利方向。在该认识指导下,吐鲁番坳陷西部富油气区岩性油气藏扩展勘探取得了良好效果。
In order to deepen the fine exploration of Jurassic-Paleogene lithologic reservoirs in the oil-rich zones of the western Turpan Depression of Turpan-Kumul Basin,based on well-seismic matching fourth-order sequence framework establishment,systemically fine depositional system was deeply studied and spatial distribution was depicted.The result shows that establishment of the fourth-order sequence framework based on well-seismic matching is the maximum study unit for understanding fine depositional system,the two-step horizon-reservoir calibration is a key step for the matching analysis of logging calibration to seismic,and the lateral variation analysis of seismic reflection within isochronous sequence framework is core for the deep understanding of contacting and evolution of different sedimentary bodies.It is considered that the differential tectonic activities of Tianshan orogenic belt in the north and the Jueluotage orogenic belt in the south are main controlling factors for the lateral migration of depositional system,the underwater distributary channel sandstone within braided river delta front is the main type of reservoir,and lateral up-dipping and pinching out sand bodies attaching to paleo-topographic setting are favorable for extend lithologic reservoir exploration in Pubei,Putaogou,Shenquan and Shengnan areas of western Turpan Depression.Under the guidance of this understanding,good result has been achieved in the exploration of lithologic reservoirs in oil-rich zones of western Turpan Depression.
作者
杨占龙
肖冬生
周隶华
黄云峰
黄小鹏
沙雪梅
YANG Zhanlong;XIAO Dongsheng;ZHOU Lihua;HUANG Yunfeng;HUANG Xiaopeng;SHA Xuemei(PetroChina Research Institute of Petroleum Exploration & Development-Northwest,Lanzhou 730020,China;Key Laboratory of Reservoir Description,China National Petroleum Corporation,Lanzhou 730020,China;Research Institute of Exploration and Development,PetroChina Tuha Oilfield Company,Hami 839009,Xinjiang,China;No. 1 Oil Production Plant,PetroChina Xinjiang Oilfield Company,Karamay 834000,Xinjiang,China)
出处
《岩性油气藏》
CSCD
北大核心
2017年第5期1-10,共10页
Lithologic Reservoirs
基金
国家油气重大专项"岩性地层油气藏区带
圈闭评价方法与关键技术"(编号:2017ZX05001-003)资助
关键词
沉积体系
高分辨率层序格架
侏罗系-古近系
吐哈盆地
depositional system
high-resolution sequence framework
Jurassic-Paleogene
Turpan-Kumul Basin
