南堡凹陷天然气成藏规律研究

发布时间：2018-05-04 19:15

本文选题：南堡凹陷 + 天然气　；参考：《东北石油大学》2017年硕士论文

【摘要】：为了研究南堡凹陷天然气分布规律和指导其勘探,在现有钻井、地震测井和分析测试资料的基础上,通过天然气类型及分布特征研究,结合天然气成藏的源岩条件、输导通道条件、圈闭条件,对南堡凹陷天然气成藏主控因素及模式进行了研究,并以此为基础,预测了天然气成藏有利目标。具体取得的成果有以下5个方面:(1)南堡凹陷天然气以气顶气为主,主要分布在南堡1号构造、高尚堡构造、老爷庙构造和南堡5号构造,少量分布在南堡2号、3号和4号构造。其层位主要是东营组和馆陶组。(2)南堡凹陷天然气主要来自沙三段和沙一段源岩,沙三段和沙一段好源岩主要分布在凹陷中部,沙三段源岩分布面积大于沙一段。天然气输导断裂主要是油源断裂,为中-晚期和早-中-晚期断裂,整个凹陷大面积分布。天然气圈闭主要为断层圈闭,主要分布在断裂密集带附近。(3)南堡凹陷天然气成藏主要受到5个因素的控制:①源岩和油源断裂分布范围控制天然气成藏范围;②断盖配置和高砂地比储层共同控制着天然气聚集层位;③输导断裂分布控制着天然气成藏的部位;④输导断裂附近反向断裂遮挡圈闭为天然气成藏提供了场所;⑤盖层封气能力和烃源岩供气能力控制着天然气富集程度。(4)南堡凹陷油气成藏有4种模式:①源内断裂输导中浅层反向断层圈闭天然气成藏模式;②源内断裂输导中深层反向断层圈闭天然气成藏模式;③源岩断裂输导深层反向断层圈闭天然气成藏模式;④源边断裂输导深浅层反向断层圈闭天然气成藏模式。(5)共预测出南堡凹陷天然气勘探的有利目标5个,分别为:沙二段的XM1-N-2圈闭、潜山的NP3-3-N-1圈闭、沙一段的XM1-N-1圈闭、沙二段的M160xl-N圈闭和潜山的NP3-3-N-2圈闭。
[Abstract]:In order to study the distribution law of natural gas in Nanpu Sag and guide its exploration, based on the existing drilling, seismic logging and analysis and testing data, through the study of the types and distribution characteristics of natural gas, combined with the source rock conditions of natural gas accumulation, The main controlling factors and models of natural gas accumulation in Nanpu sag are studied under the conditions of transportation channel and trap. On the basis of this, the favorable targets of gas accumulation are predicted. The main natural gas in Nanpu sag is gas top gas, which is mainly distributed in No.1 structure, No.1 structure, No.5 structure, Laoyamiao structure and No.5 structure in Nanpu, and a few in No.2, No.3 and No.4 structures in Nanpu. The natural gas of Nanpu sag mainly comes from the source rocks of the third member and the first member of the Shahejie formation. The good source rocks of the third member and the member 1 are mainly distributed in the central part of the sag, and the area of the source rocks of the third member of the formation is larger than that of the first member of the formation. The natural gas transporting faults are mainly oil-source faults, which are middle-late and early-middle-late faults, and the whole sag is distributed in large area. Natural gas traps are mainly fault traps, mainly distributed in the vicinity of fault-dense zone.) Natural gas accumulation in Nanpu sag is mainly controlled by five factors: 1 source rock and oil-source fault distribution range control natural gas reservoir formation range; (2) the fault cap configuration and the high sand land ratio reservoir jointly control the distribution of the gas accumulation horizon and the distribution of the transporting faults, which control the formation of natural gas reservoirs. The reverse fault traps near the gas migration faults provide a place for the formation of natural gas reservoirs. (5) Gas sealing ability of caprock and gas supply ability of hydrocarbon source rock control the degree of natural gas enrichment. (2) the gas accumulation model of the gas trap in the mid-deep reverse fault trap of the fault transport within the source, and the gas accumulation model in the deep reverse fault trap of the source rock fault, and the gas accumulation model of the deep reverse fault trap in the source rock; (4) the natural gas reservoir formation model of deep-shallow fault trap in source-edge fault) predicts five favorable targets for natural gas exploration in Nanpu sag, which are: XM1-N-2 trap in the second member of Sha, NP3-3-N-1 trap in buried hill, XM1-N-1 trap in section one of sand. The M160xl-N trap of the second member of Sha and the NP3-3-N-2 trap of buried hill.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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