定边地区侏罗系延安组延9储层成岩作用特征

发布时间：2019-02-17 18:43

【摘要】：通过岩石薄片、铸体薄片、物性、高压压汞、阴极发光、扫描电镜及X射线衍射等测试手段,对定边地区延9砂岩储层成岩作用进行研究。结果表明,研究区延9储层经历了压实作用、胶结作用及溶蚀作用,压实作用、伊利石胶结及碳酸盐胶结破坏原生孔隙,使储层物性变差;高岭石对储层物性的影响具有双重性;溶蚀作用产生较多的次生孔隙,有利于改善储层物性。依据粘土矿物组合及自生矿物分布,认为研究区延9砂岩成岩演化阶段进入了中成岩阶段A期。研究为储层综合评价及有利区优选提供了地质依据。
[Abstract]:The diagenesis of 9 sandstone reservoirs in Dingbian area was studied by means of rock sheet, cast sheet, physical property, high pressure mercury pressure, cathodoluminescence, scanning electron microscope and X ray diffraction. The results show that the reservoir of Yan-9 has experienced compaction, cementation and dissolution, compaction, Illite cementation and carbonate cementation, which destroy the primary pores and make the reservoir physical properties worse. The effect of kaolinite on reservoir physical properties is dualistic, and dissolution produces more secondary pores, which is helpful to improve reservoir physical properties. According to the clay mineral assemblage and the distribution of authigenic minerals, it is considered that the diagenetic evolution stage of 9 sandstone in the study area has entered the middle diagenetic stage A. The study provides geological basis for reservoir comprehensive evaluation and favorable area selection.
【作者单位】：克拉玛依职业技术学院石油工程系;中国石油大学(北京)克拉玛依校区石油学院;西安石油大学地球科学与工程学院;中国石油吐哈油田分公司勘探开发研究院;中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所;延长油田股份有限公司;
【基金】：国家重大专项(2011ZX05005) 新疆维吾尔自治区自然科学基金(2017D01B56) 克拉玛依市科技计划项目(SK201532)
【分类号】：P618.13

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