准噶尔盆地腹部深层八道湾组致密储层特征及主控因素

发布时间：2018-05-26 14:31

本文选题：深层致密储层 + 储层特征　；参考：《东北石油大学学报》2017年01期

【摘要】：综合利用岩心、测井、薄片、扫描电镜及分析化验等资料,分析准噶尔盆地莫索湾—莫北地区侏罗系下统八道湾组致密储层宏观、微观特征及质量主控因素。结果表明:该储层为典型深层低—特低孔、低—特低渗致密碎屑岩储层;砂体主要为浅水三角洲型前缘水下分流河道细粒、中—细粒岩屑类砂岩,成分成熟度和胶结物体积分数低,岩屑和塑性岩屑体积分数高;成岩作用主要包括破坏性压溶作用、胶结作用及建设性溶蚀作用。孔隙垂向上主要位于混合孔—孔隙稳定和次生孔—孔隙增加两个变化带;孔喉为中—细孔—细喉型,大小、分布、连通性及渗流能力较差。储层质量(物性)主控因素为沉积相带、成岩作用和异常压力,共同决定储层原始和现今物性。该研究结果为深化盆地深层致密油气储层勘探开发提供依据。
[Abstract]:Based on the data of core, logging, thin slice, scanning electron microscope and analytical test, this paper analyzes the tight reservoir of Lower Jurassic Badaowan formation in Mosuowan-Mobei area, Junggar Basin. The results show that the reservoir is a typical deep-seated low-ultra-low porosity, low-ultra-low permeability tight clastic reservoir, sand body is mainly shallow water delta type underwater distributary channel fine grain, meso-fine-grained lithic sandstone, The compositional maturity and the integral number of cemented objects are low, the volume fraction of cuttings and plastic cuttings is high, and the diagenesis mainly includes destructive pressure solution, cementation and constructive dissolution. The vertical pore is mainly located in the mixed pore-pore stability zone and the secondary pore-pore increase zone, and the pore throat is of the medium-fine pore-fine throat type with poor size, distribution, connectivity and percolation ability. The main controlling factors of reservoir quality (physical properties) are sedimentary facies zone diagenesis and abnormal pressure which jointly determine the original and present physical properties of reservoir. The results provide a basis for deepening the exploration and development of deep and dense oil and gas reservoirs in the basin.
【作者单位】：中国石油新疆油田分公司勘探开发研究院;
【基金】：国家重点基础研究发展计划(“973”计划)项目(2014CB239001) 国家科技重大专项(2016ZX05047-001)
【分类号】：P618.13

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