玛湖凹陷及周缘石炭系储层与流体相态预测
发布时间：2018-08-14 14:17
【摘要】：玛湖凹陷及周缘下二叠统—石炭系发育一系列继承性构造圈闭,埋深普遍超过6000m,成藏条件优越。通过优选,选择最为有利的达1井背斜作为油气勘探的突破口。石炭系是否发育有效储层,圈闭流体相态及油气成藏模式是什么,是达1井背斜石炭系构造圈闭勘探能否获得成功亟待解决的关键问题。在单井资料匮乏的情况下,通过重磁电等资料与已钻井资料标定,认为达1井背斜石炭系发育中基性火山岩风化壳储层,储层物性相对较差;根据玛湖地区烃源岩演化阶段、地震层速度、浅层试油等资料预测达1井背斜为气藏;通过构造演化及烃源岩分析,认为达1井背斜为源边多期不整合侧向运聚成藏。综合储层、流体相态、成藏条件及埋深等因素,分析认为,达1井背斜具备优越的油气成藏条件,有望获得重大突破并发现规模大气田。
[Abstract]:A series of inherited structural traps have been developed in Mahu depression and the Lower Permian Carboniferous in the surrounding area. The buried depth is generally over 6 000 m and the reservoir forming conditions are superior. The anticline, which is the most favorable well, is chosen as the breakthrough of oil and gas exploration. Whether the effective reservoir is developed in Carboniferous system, what is the phase state of trap fluid and the model of hydrocarbon accumulation are the key problems to be solved urgently whether the exploration of Carboniferous structural trap in well Da-1 anticline is successful or not. In the case of lack of single well data and calibration of gravity, magnetoelectric and other data with well drilling, it is considered that the anticlinal Carboniferous developed weathering crust reservoirs of middle basic volcanic rocks in well Da-1, and the reservoir physical properties are relatively poor, according to the evolution stage of hydrocarbon source rocks in Mahu area, Through structural evolution and source rock analysis, the anticline of well Da-1 is considered to be a multi-stage unconformable lateral migration accumulation reservoir. By synthesizing the factors of reservoir, fluid phase, reservoir forming condition and burial depth, it is concluded that the anticline of well Da-1 has superior oil and gas reservoir forming conditions, which is expected to make a major breakthrough and to find large scale gas field.
【作者单位】： 中国石油新疆油田公司勘探开发研究院;中国石油勘探开发研究院;
【基金】：国家“973”项目(2011CB201101) 国家科技重大专项(2011ZX05001-06)
【分类号】：P618.13
本文编号：2183123
[Abstract]:A series of inherited structural traps have been developed in Mahu depression and the Lower Permian Carboniferous in the surrounding area. The buried depth is generally over 6 000 m and the reservoir forming conditions are superior. The anticline, which is the most favorable well, is chosen as the breakthrough of oil and gas exploration. Whether the effective reservoir is developed in Carboniferous system, what is the phase state of trap fluid and the model of hydrocarbon accumulation are the key problems to be solved urgently whether the exploration of Carboniferous structural trap in well Da-1 anticline is successful or not. In the case of lack of single well data and calibration of gravity, magnetoelectric and other data with well drilling, it is considered that the anticlinal Carboniferous developed weathering crust reservoirs of middle basic volcanic rocks in well Da-1, and the reservoir physical properties are relatively poor, according to the evolution stage of hydrocarbon source rocks in Mahu area, Through structural evolution and source rock analysis, the anticline of well Da-1 is considered to be a multi-stage unconformable lateral migration accumulation reservoir. By synthesizing the factors of reservoir, fluid phase, reservoir forming condition and burial depth, it is concluded that the anticline of well Da-1 has superior oil and gas reservoir forming conditions, which is expected to make a major breakthrough and to find large scale gas field.
【作者单位】： 中国石油新疆油田公司勘探开发研究院;中国石油勘探开发研究院;
【基金】：国家“973”项目(2011CB201101) 国家科技重大专项(2011ZX05001-06)
【分类号】：P618.13
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1 王博;武威盆地石炭系烃源岩地球化学特征研究[D];西安石油大学;2017年
，本文编号：2183123
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