本文選題：灘相儲層　切入點：成因分析　出處：《吉林大學(xué)學(xué)報(地球科學(xué)版)》2017年04期 　論文類型：期刊論文

【摘要】：伊拉克哈勒法耶油田Mishrif組灘相儲層發(fā)育,是研究區(qū)內(nèi)最主要的產(chǎn)油層位。利用巖心、薄片、測井資料對Mishrif組沉積相進行了研究,結(jié)果表明該組發(fā)育局限臺地、開闊臺地、臺內(nèi)洼地和臺地邊緣4種沉積相,灘相儲層主要發(fā)育在開闊臺地和臺地邊緣相帶。并綜合利用鑄體薄片、物性實驗數(shù)據(jù)及壓汞曲線等資料對灘相儲層特征和成因進行了分析。灘相儲層巖石類型多樣,發(fā)育生屑灰?guī)r、生屑泥粒/粒泥灰?guī)r、砂屑灰?guī)r等多種巖石類型,巖石顆粒較粗�？紫额愋投鄻�,主要以鑄模孔、粒間孔、溶孔和體腔孔為主,其中以粒間孔和鑄�？装l(fā)育最為廣泛。各類灘相儲層孔隙度較高,滲透率差異明顯,平均滲透率為(2.35~139.17)×10~(-3)μm~2。整體孔隙結(jié)構(gòu)較好,排驅(qū)壓力較低,大喉道較為發(fā)育。灘相儲層發(fā)育受沉積環(huán)境控制和成巖作用改造程度影響,有利的沉積條件是灘相儲層原生孔隙發(fā)育的基礎(chǔ),同生期溶蝕作用的改造形成大量次生孔隙,從而提高了儲層的儲集性能。
[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.
【作者單位】： 同濟大學(xué)海洋與地球科學(xué)學(xué)院;中國石油化工股份有限公司石油勘探開發(fā)研究院無錫石油地質(zhì)研究所;油氣藏地質(zhì)及開發(fā)工程國家重點實驗室(成都理工大學(xué));中國石油勘探開發(fā)研究院;
【基金】：中國石油天然氣股份有限公司“十二五”重大專項(2011E-2501)~~
【分類號】：P618.13

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