高孔隙性砂岩中变形带类型、特征及成因机制

发布时间：2018-01-22 18:45

本文关键词： 高孔隙性砂岩变形带反向改造低物性断裂带　出处：《中国矿业大学学报》2017年06期 　论文类型：期刊论文

【摘要】：为了探索断裂对高孔隙性储层改造作用,在部分渤海湾盆地钻井取芯资料及结合国内外相关研究的基础上,对高孔隙砂岩变形机制、发育的亚地震构造及其特征进行了系统分析.认为高孔隙性砂岩变形有别于低-非孔隙性岩石,不是由破裂作用产生裂缝,而是由于颗粒流作用、碎裂作用和碎裂流作用形成与裂缝相对应的另一种类型亚地震构造,而岩石变形产生的亚地震构造对储层具有反向改造作用.高孔隙性砂岩变形形成的亚地震构造为物性较母岩明显降低的变形带.研究结果表明:变形带孔隙度比母岩低10%~25%,渗透率比母岩低1~7个数量级,变形带包括解聚带、碎裂带、压溶胶结碎裂带和硅酸盐带4种类型,渗透率具有依次降低趋势.高孔隙性储层变形产生变形带,因变形带物性低,造成储层物性整体变低,低-非孔隙性储层变形产生裂缝,提高储层物性.
[Abstract]:In order to explore the effect of fault on the reconstruction of high porosity reservoir, the deformation mechanism of high porosity sandstone is studied on the basis of coring data from drilling in part of Bohai Bay Basin and related research at home and abroad. The developed subseismic structures and their characteristics are systematically analyzed. It is considered that the deformation of high-porosity sandstone is different from that of low-porosity rocks, which is caused not by fracture but by particle flow. Another type of subseismic structure corresponding to the fracture is formed by fragmentation and cataclastic flow. The subseismic structure produced by rock deformation has reverse transformation to reservoir. The subseismic structure formed by deformation of high porosity sandstone is a deformed zone whose physical property is obviously lower than that of parent rock. The results show that:. The porosity of the deformation zone is 10% or 25% lower than that of the parent rock. The permeability is 1 ~ 7 orders of magnitude lower than that of the parent rock, and the deformation zone includes four types: depolymerization zone, fragmentation zone, pressure sol clastic zone and silicate zone. The deformation of high porosity reservoir leads to deformation zone, which results in low physical property of reservoir and fracture in low porosity reservoir, and improves reservoir physical property.
【作者单位】：东北石油大学CNPC断裂控藏研究室;黑龙江省科技创新"断层变形封闭性及与流体运移"团队;东北石油大学"非常规油气成藏与开发"省部共建国家重点实验室培育基地;东北石油大学地球科学学院;大庆油田有限责任公司勘探开发研究院;
【基金】：国家自然科学基金重点联合基金项目(U1562214);国家自然科学基金项目(41572127) 国家科技重大专项(2016ZX05054009)
【分类号】：P588.212.3;P618.13
【正文快照】： 刘志达1,2,3,4,付晓飞1,2,3,4,孟令东1,2,3,4,杜庆龙5,孙永河1,2,3,4,王升1,2,3(1.东北石油大学CNPC断裂控藏研究室,黑龙江大庆163318;2.黑龙江省科技创新“断层变形、封闭性及与流体运移”团队,黑龙江大庆163318;3.东北石油大学“非常规油气成藏与开发”省部共建国家重点实验

【相似文献】