伊拉克哈勒法耶油田Mishrif组滩相储层特征及其成因分析

发布时间：2018-03-15 10:55

本文选题：滩相储层　切入点：成因分析　出处：《吉林大学学报(地球科学版)》2017年04期 　论文类型：期刊论文

【摘要】：伊拉克哈勒法耶油田Mishrif组滩相储层发育,是研究区内最主要的产油层位。利用岩心、薄片、测井资料对Mishrif组沉积相进行了研究,结果表明该组发育局限台地、开阔台地、台内洼地和台地边缘4种沉积相,滩相储层主要发育在开阔台地和台地边缘相带。并综合利用铸体薄片、物性实验数据及压汞曲线等资料对滩相储层特征和成因进行了分析。滩相储层岩石类型多样,发育生屑灰岩、生屑泥粒/粒泥灰岩、砂屑灰岩等多种岩石类型,岩石颗粒较粗。孔隙类型多样,主要以铸模孔、粒间孔、溶孔和体腔孔为主,其中以粒间孔和铸模孔发育最为广泛。各类滩相储层孔隙度较高,渗透率差异明显,平均渗透率为(2.35~139.17)×10~(-3)μm~2。整体孔隙结构较好,排驱压力较低,大喉道较为发育。滩相储层发育受沉积环境控制和成岩作用改造程度影响,有利的沉积条件是滩相储层原生孔隙发育的基础,同生期溶蚀作用的改造形成大量次生孔隙,从而提高了储层的储集性能。
[Abstract]:The beach facies reservoir of the Mishrif formation is the most important reservoir in the study area. The sedimentary facies of the Mishrif formation have been studied by using the core, thin slice and logging data. The results show that the formation has a limited platform and an open platform. There are four sedimentary facies in the depressions and the edge of the platform, and the beach facies reservoir is mainly developed in the open platform and the platform margin facies belt. The characteristics and genesis of beach facies reservoir are analyzed by physical property experimental data and mercury injection curve. There are various rock types of beach facies reservoir, such as bioclastic limestone, debris mudstone / granular marl, sand debris limestone and so on. The pore types are mainly mold pore, intergranular pore, solution pore and cavity pore, among which intergranular pore and mold pore are the most widely developed. The porosity of various beach facies reservoirs is high, and the permeability difference is obvious. The average permeability is 2.35 ~ 139.17 脳 10 ~ (-3) 渭 m ~ (-3) 渭 m ~ (-2). The overall pore structure is better, the displacement pressure is lower, and the large throat is relatively developed. The development of beach facies reservoir is affected by sedimentary environment control and diagenesis transformation degree. Favorable sedimentary conditions are the basis for the development of primary pores in shoal facies reservoirs. During the syngenic dissolution, a large number of secondary pores were formed, thus improving the reservoir performance of the reservoir.
【作者单位】：同济大学海洋与地球科学学院;中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所;油气藏地质及开发工程国家重点实验室(成都理工大学);中国石油勘探开发研究院;
【基金】：中国石油天然气股份有限公司“十二五”重大专项(2011E-2501)~~
【分类号】：P618.13

【相似文献】