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首页> 外文期刊>The Open Petroleum Engineering Journal >Lacustrine Carbonate Reservoir Characteristics Research of JurassicDa’anzhai Member in North Central Sichuan Basin
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Lacustrine Carbonate Reservoir Characteristics Research of JurassicDa’anzhai Member in North Central Sichuan Basin

机译：川中北部侏罗系大安寨段湖相碳酸盐岩储层特征研究

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摘要

Based on both macroscopic and microscopic characteristics of cores from Lower Jurassic Da’anzhai Member innorth central Sichuan Basin, and combined with physical property data, a detail study has been conducted, which includesreservoir characteristics such as lithologic characters, physical properties, and reservoir space types, and control factors ofreservoir development. The study suggests that, there are two typical kinds of reservoirs: crystalline shell limestone andargillaceous shell limestone. The reservoirs properties are poor with ultra-low porosity and low permeability, which canbe significantly improved by fractures. Reservoir space type is pore-fracture, mainly constitutive of the micro-fracturesaccompanied by dissolved pores. The reservoir development is controlled by sedimentation, diagenesis and tectogenesistogether. Shell beach and lacustrine slop are the favorable facies for reservoir development. Dissolution is the primaryconstructive diagenesis to improve reservoir porosity and permeability. Structural fractures are necessary for reservoir effectivenessand high production.
机译：根据四川盆地中北部下侏罗统大安寨段岩心的宏观和微观特征，结合物性数据，进行了详细的研究，包括岩性，物性和储层空间类型等储层特征。 ，以及储层开发的控制因素。研究表明，有两种典型的储集层：结晶壳灰岩和泥质壳灰岩。超低孔隙度和低渗透率的储层性质较差，裂缝可显着改善储层的性质。储层空间类型为孔隙裂缝，主要由微裂缝和溶解的孔隙构成。储层发育受沉积，成岩作用和构造作用共同控制。贝壳海滩和湖边坡是储集层发育的有利相。溶解是提高储层孔隙度和渗透率的主要构造成岩作用。结构裂缝是储层有效性和高产量所必需的。

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