TY -的A2 - Leary,彼得•张盟——LiKuan AU -罗,Xiaorong盟——你们Mingze盟——张Baoshou AU -魏,红星盟——曹Binfeng盟——徐、刘盟——,Zhida AU - Lei,宇鸿盟-李,曹国伟PY - 2021 DA - 2021/03/24 TI -小规模深层砂岩成岩异质性对储层质量的影响:一个案例研究从侏罗纪Ahe形成越低,东部库车抑郁SP - 6626652六世- 2021 AB -下侏罗纪Ahe形成深层碎屑岩储层是一个重要的勘探目标,在东部库车萧条。Ahe形成砂岩显示非均匀孔隙度和渗透率储层。这些属性都知之甚少,限制石油积累,很难发展预测水库。基于岩心、薄片、扫描电镜和流体包裹体,本研究调查了砂岩成分和质地和成岩异质性的核心。目的是了解碎屑成分和结构的变化的影响在成岩和储层质量进化。Ahe形成砂岩是居多的细-粗粒岩屑砂岩,少量长石岩屑砂岩。在fining-up砂床,碎屑颗粒大小决定了机械压实度,因此,大量的孔隙度通过韧性谷物和泥泞的矩阵。当地完成方解石胶结是一个明显的例外总趋势。三个砂岩岩相已定义基于纹理和框架组成、碎屑矩阵,成岩作用、孔隙类型:(1)ductile-lean砂岩,(2)ductile-rich砂岩和钙质胶结砂岩(3)紧密。不同的岩相有经验的对比成岩和孔隙度演化路径。 Ductile-lean sandstones underwent lower degree of compaction relative to ductile-rich sandstones during the eodiagenesis stage, and extensive grain dissolution occurred. The petrofacies remained relatively porous and permeable before early oil arrival. With continued burial, the porosity and permeability in the sandstones were further reduced by cementation. The petrofacies still had moderate porosity and permeability and were substantially charged when late petroleum migrated into the reservoirs. Thus, ductile-lean sandstones constitute effective reservoir rocks in deep reservoirs. By translating petrofacies to signatures of well logs, the effective properties of the reservoir rocks can be forecasted at the well scale. SN - 1468-8115 UR - https://doi.org/10.1155/2021/6626652 DO - 10.1155/2021/6626652 JF - Geofluids PB - Hindawi KW - ER -