准噶尔盆地玛湖凹陷及周缘深大构造有效储层及烃类相态分析

发布时间：2018-05-01 14:15

本文选题：准噶尔盆地 + 玛湖凹陷　；参考：《中国石油勘探》2016年01期

【摘要】：准噶尔盆地玛湖凹陷及周缘石炭系、下二叠统发育一系列大型背斜、断背斜构造,处于玛湖凹陷下二叠统风城组优质烃源灶中心及周缘,成藏条件优越,是准噶尔盆地深层油气勘探的重要领域。然而,这些构造埋藏普遍较深,目的层是否发育规模有效储层、烃类相态是否为气相是影响该领域勘探开发潜力的两大关键问题。通过航磁异常处理解释、地震层速度分析、烃源岩演化及天然气成因分类等综合分析,认为玛北背斜、达1井背斜、玛湖背斜中北部发育火山岩风化壳储层。综合风城组烃源岩演化阶段、背斜构造空间位置、原油裂解深度等,预测玛北背斜、玛湖背斜烃类相态为干酪根裂解气,达1井背斜为油气共生,玛南背斜以气为主。
[Abstract]:There are a series of large anticlines and faulted anticlines in Mahu sag and its peripheral Carboniferous in Junggar Basin, which are located in the center and periphery of high quality hydrocarbon source foci in Fengcheng formation of Lower Permian in Mahu Depression. It is an important field of deep oil and gas exploration in Junggar Basin. However, these structures are generally buried deeply, whether the target layer develops scale effective reservoirs and whether the hydrocarbon phase is gas phase are the two key problems that affect the potential of exploration and development in this field. Through the comprehensive analysis of aeromagnetic anomaly processing, seismic velocity analysis, hydrocarbon source rock evolution and natural gas genetic classification, it is considered that volcanic weathering crust reservoirs are developed in Mabei anticline, Da-1 well anticline and central northern Mahu anticline. According to the source rock evolution stage of Fengcheng formation, the location of anticline structure and the depth of crude oil cracking, the hydrocarbon phases of Mabei anticline and Mahu anticline are predicted to be kerogen cracking gas, well 1 anticline is oil and gas symbiosis, and Manan anticline is dominated by gas.
【作者单位】：中国石油勘探开发研究院;中国石油新疆油田公司勘探开发研究院;
【基金】：国家科技重大专项“岩性地层油气藏成藏规律、关键技术及目标评价”(2011ZX05001)
【分类号】：P618.13

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