西部斜坡区萨尔图油层油气富集规律研究

发布时间：2018-04-14 04:21

本文选题：西部斜坡区 + 萨尔图油层　；参考：《东北石油大学》2015年硕士论文

【摘要】：利用油气钻探和油气显示资料开展了西部斜坡区层序地层学、地震沉积学、构造演化特征、油气藏精细解剖和油气分布规律等的系统研究,深入剖析了油气成藏的主控因素和油气富集区带的分布规律,明确了下步勘探的重点方向。落实4个鼻状构造带和1个地层尖灭带,指出了鼻状构造带及地层尖灭带是油气聚集富集的有利区带,划分了5个油气聚集带,且不同油气藏聚集带控制着不同类型油气藏的分布。西部斜坡区具有三个主要物源区,西北部物源、北部物源及西南部短物源区,形成西北部物源沉积体系、北部物源沉积体系及西南部物源沉积体系。通过编制了萨尔图油层细分层沉积相图,明确了萨尔图油层不同时期砂体分布规律及沉积充填特征,总结了沉积演化规律,指出了三角洲前缘及滨浅湖砂体是西斜坡成藏的有利储集相带。西斜坡富拉尔基-江桥地区主要含油层位为S23油层组;阿拉新-泰康地区主要含油层位为S0、S1;平洋主要含油层位为S0、S1,局部为S23。油气聚集区的成藏特征和富集程度明显受构造和沉积砂体类型的共同控制,发育微幅度构造油藏、岩性-构造油藏、构造-岩性及砂岩上倾尖灭、砂岩透镜体岩性等多种油气藏类型。结合构造、断裂、沉积及油气运移等因素,建立了研究区域成藏模式,综合分析了控藏的主要因素,认定鼻状构造带、断裂带和地层尖灭部位最有利油气富集成藏。S23划分了5个有利油气富集带,S1划分了4个有利油气富集带,明确油气富集的有利部位。
[Abstract]:A systematic study of sequence stratigraphy, seismic sedimentology, structural evolution characteristics, fine anatomy of oil and gas reservoirs and distribution of oil and gas was carried out in the western slope using oil and gas drilling and oil gas display data.The main controlling factors of oil and gas accumulation and the distribution law of oil and gas rich areas are deeply analyzed, and the key direction of next exploration is defined.Four nasal structural zones and one stratigraphic pinnacle zone are implemented. It is pointed out that the nasal structural zone and the stratigraphic pinnacle zone are favorable zones for hydrocarbon accumulation and enrichment, and five oil and gas accumulation zones have been divided.Different oil and gas accumulation zones control the distribution of different types of oil and gas reservoirs.There are three main provenances in the western slope region, the northwest provenance, the northern provenance and the southwest short provenance region, which form the northwestern provenance system, the northern provenance system and the southwest provenance system.By compiling the sedimentary facies diagram of the subdivision layer in Saltu reservoir, the distribution law of sand body and the characteristics of sedimentary filling in different periods of Saltu reservoir are clarified, and the sedimentary evolution law is summarized.It is pointed out that the delta front and shallow lake sandbody are favorable reservoir facies zone for the west slope.The main oil-bearing formation of Fulargi-Jiangqiao area on the western slope is the S23 oil formation, the main oil-bearing horizon of Araxin-Taikang area is S0S1, and the main oil-bearing horizon of Pingyang is S0S1 with S23.The characteristics and enrichment of oil and gas accumulation area are obviously controlled by the types of structure and sedimentary sand body, and the micro-amplitude structural reservoir, lithology-structural reservoir, tectonic-lithology and sandstone updip pinnacle are developed.Sandstone lens lithology and other oil and gas reservoir types.Combined with the factors of structure, fault, sedimentation and oil and gas migration, the model of reservoir formation in the study area was established, and the main factors of controlling reservoir were analyzed synthetically, and the nasal structural zone was identified.S23, the most favorable oil-gas accumulation reservoir in fault zone and formation pinnacle, is divided into five favorable oil-gas enrichment zones and four favorable oil-gas enrichment zones.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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