吉木萨尔凹陷芦草沟组致密油储层沉积相分析
发布时间：2019-01-03 10:22
【摘要】：利用岩芯、薄片、录井和测井等资料,在识别各级次基面旋回界面类型及特征的基础上,将准噶尔盆地吉木萨尔凹陷芦草沟组划分为1个长期旋回,6个中期旋回,44个短期旋回,建立高分辨率层序地层对比格架。在总结地球化学、岩性、沉积构造、电性特征的基础上,综合分析古生物化石、测井等资料,以识别沉积相标志为主,进行单井、连井及平面沉积相分析。研究结果认为,吉木萨尔凹陷芦草沟组为咸化湖泊—三角洲沉积体系,岩性复杂多变,在机械、化学、生物等沉积作用共同影响下,形成由细粒碎屑岩、泥岩、碳酸盐岩构成的混积岩层。芦草沟组发育上、下两个致密油甜点体,上甜点体(SSC37—SSC42)为咸化湖相沉积,微相类型以滩坝为主;下甜点体(SSC6—SSC17)以三角洲前缘沉积为主,微相类型为席状砂、远砂坝等。利用开发试验区及水平井部署区的井多、井密的有利条件,对沉积相边界进行控制,从而实现平面微相的精细刻画,研究表明芦草沟组优质甜点以滩坝主体微相为主,主要集中发育在凹陷中心低隆起处。
[Abstract]:Based on the data of core, thin slice, logging and logging, the Lucaogou formation in Jimusar sag of Junggar Basin is divided into one cycle and six middle cycles on the basis of identifying the types and characteristics of subbasal cycle interface at all levels. High resolution sequence stratigraphic correlation framework was established in 44 short term cycles. On the basis of summarizing geochemistry, lithology, sedimentary structure and electrical characteristics, the paleontological fossils and logging data are analyzed synthetically, and the single well, even well and plane sedimentary facies are analyzed mainly by identifying sedimentary facies. The results show that the Lucaogou formation in Jimusar sag is a brackish lacustrine-delta sedimentary system with complex and changeable lithology. Under the influence of mechanical, chemical, biological and other sedimentary processes, the formation of fine clastic rocks and mudstones is formed. A mixed formation of carbonate rock. On the development of Luchaogou formation, the next two dense oil desserts, the upper desserts (SSC37-SSC42) are saline lacustrine deposits, and the microfacies are mainly beach and dam. The lower dessert body (SSC6-SSC17) is dominated by delta front sedimentation, and the microfacies types are sheet sand, far sand bar and so on. Taking advantage of the advantages of many wells and dense wells in the development test area and horizontal well deployment area, the boundary of sedimentary facies is controlled, and the fine delineation of planar microfacies is realized. The research shows that the main microfacies of the high quality desserts in Lucaogou formation are beach and dam body. It is mainly concentrated at the low uplift in the center of the sag.
【作者单位】： 东北石油大学地球科学学院;新疆油田公司勘探开发研究院;
【基金】：国家高技术研究发展计划(863计划)项目(2013AA064903) 国家自然科学基金(41272153) 国家科技重大专项(2011ZX05006-005) 黑龙江省普通高等学校青年学术骨干支持计划项目(1254G003)~~
【分类号】：P618.13
，
本文编号：2399242
[Abstract]:Based on the data of core, thin slice, logging and logging, the Lucaogou formation in Jimusar sag of Junggar Basin is divided into one cycle and six middle cycles on the basis of identifying the types and characteristics of subbasal cycle interface at all levels. High resolution sequence stratigraphic correlation framework was established in 44 short term cycles. On the basis of summarizing geochemistry, lithology, sedimentary structure and electrical characteristics, the paleontological fossils and logging data are analyzed synthetically, and the single well, even well and plane sedimentary facies are analyzed mainly by identifying sedimentary facies. The results show that the Lucaogou formation in Jimusar sag is a brackish lacustrine-delta sedimentary system with complex and changeable lithology. Under the influence of mechanical, chemical, biological and other sedimentary processes, the formation of fine clastic rocks and mudstones is formed. A mixed formation of carbonate rock. On the development of Luchaogou formation, the next two dense oil desserts, the upper desserts (SSC37-SSC42) are saline lacustrine deposits, and the microfacies are mainly beach and dam. The lower dessert body (SSC6-SSC17) is dominated by delta front sedimentation, and the microfacies types are sheet sand, far sand bar and so on. Taking advantage of the advantages of many wells and dense wells in the development test area and horizontal well deployment area, the boundary of sedimentary facies is controlled, and the fine delineation of planar microfacies is realized. The research shows that the main microfacies of the high quality desserts in Lucaogou formation are beach and dam body. It is mainly concentrated at the low uplift in the center of the sag.
【作者单位】： 东北石油大学地球科学学院;新疆油田公司勘探开发研究院;
【基金】：国家高技术研究发展计划(863计划)项目(2013AA064903) 国家自然科学基金(41272153) 国家科技重大专项(2011ZX05006-005) 黑龙江省普通高等学校青年学术骨干支持计划项目(1254G003)~~
【分类号】：P618.13
，
本文编号：2399242
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