塔里木盆地克深2气田储层构造裂缝成因与演化

发布时间：2018-03-01 20:14

本文关键词： 储层构造裂缝成因演化油气成藏克深气田　出处：《中南大学学报(自然科学版)》2017年05期 　论文类型：期刊论文

【摘要】：在储层构造裂缝力学成因分类的基础上,对克深2气田的构造裂缝进行成因分析,然后结合构造演化史和构造应力场演化史,研究克深2气田储层构造裂缝的演化特征,并分析构造裂缝形成期次与油气成藏的匹配关系。研究结果表明:克深2气田发育近EW走向、近NS走向和NW—SE走向的3组构造裂缝,其中近EW走向的构造裂缝主要受控于早期区域伸展作用、后期背斜弯曲拱张作用、异常流体高压作用、构造反转期应力转换作用以及逆冲断层伴生等因素,近NS走向的构造裂缝主要受控于近南北向的构造挤压作用,NW—SE走向的构造裂缝则主要形成于NNW—SSE或近南北方向的水平最大挤压应力;克深2气田发育白垩纪和古近纪末期、中新世末期、上新世末期3期构造裂缝,其中第2期和第3期构造裂缝是最重要的两期构造裂缝,与第2期和第3期成藏期具有较好的匹配关系,促进克深2工业规模气田的最终形成。
[Abstract]:Based on the classification of reservoir structural fracture mechanics, the structural fractures in Keshan 2 gas field are analyzed, and the evolution characteristics of structural fractures in Kesen 2 gas field are studied by combining the structural evolution history and tectonic stress field evolution history. The results show that there are three groups of structural fractures in Keshan 2 gas field, which are near EW strike, NS strike and NW-SE strike. The tectonic fractures near the EW strike are mainly controlled by the early regional extension, the late anticline bending and arch extension, the abnormal fluid pressure, the tectonic inversion stress conversion and the associated thrust faults, etc. The tectonic fractures near NS strike are mainly controlled by the tectonic compressional action of the NW-SE strike and the tectonic fractures along the NW-SE strike are mainly formed in the NNW-SSE or the horizontal maximum compressive stress in the north-south direction, and the Kesheng 2 gas field developed during the Cretaceous and the late Paleogene. In the late Miocene and the late Pliocene, the structural fractures in the 2nd and 3rd phases are the two most important structural fractures, which have a good matching relationship with the second and the third periods of the reservoir forming period, and the tectonic fractures in the late Miocene and the late Pliocene are the two most important structural fractures. Promote the final formation of Kesheng 2 industrial scale gas field.
【作者单位】：中国石油杭州地质研究院;中国石油大学(华东)地球科学与技术学院;中国石油塔里木油田公司勘探开发研究院;
【基金】：国家科技重大专项(2016ZX05003-001-002,2016ZX05001-002-003)~~
【分类号】：P618.13

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