本文選題：龍王廟組　切入點：灘相　出處：《海相油氣地質(zhì)》2016年01期 　論文類型：期刊論文

【摘要】：依據(jù)巖心、常規(guī)薄片及鑄體薄片、物性分析、壓汞等資料的研究,四川盆地中部下寒武統(tǒng)龍王廟組灘相儲層為發(fā)育良好的中低孔、低滲的孔隙型儲層及裂縫—孔隙型儲層。儲集巖主要為砂屑白云巖、鮞粒白云巖與具殘余顆粒結(jié)構(gòu)的粉—細(xì)晶白云巖,儲集空間主要包括粒間溶孔、粒內(nèi)溶孔、晶間溶孔、鑄�？�、殘余粒間孔、裂縫及溶洞,孔喉配置關(guān)系好。儲層形成機制研究表明,灘核和灘翼微相有利于儲層發(fā)育,灘相儲層在沉積早期具有典型的宏觀非均質(zhì)性,這為儲層的形成與演化提供了物質(zhì)基礎(chǔ)。同生巖溶作用控制了早期儲層的孔隙演化,表生巖溶作用決定了儲層分布的基本特征,埋藏巖溶作用有利于先期孔滲層的優(yōu)化改造。提出灘相儲層的演化主要經(jīng)歷三個階段,其中沉積—同生成巖階段是早期優(yōu)質(zhì)儲層形成的關(guān)鍵時期,表生巖溶改造階段是灘相儲層大規(guī)模增孔時期,埋藏成巖階段為灘相儲層孔隙調(diào)整和穩(wěn)定時期。
[Abstract]:Based on the study of core, conventional and cast thin sections, physical properties analysis, mercury injection and other data, the beach facies reservoir of the middle and lower Cambrian Longwangmiao formation in Sichuan Basin is a well-developed medium and low porosity. The reservoir rocks are mainly sandstone dolomite, oolitic dolomite and silt-fine grain dolomite with residual grain structure. The reservoir space mainly includes intergranular dissolved pore, intragranular dissolved pore and intergranular dissolved pore. The formation mechanism of the reservoir shows that the formation mechanism of the reservoir is favorable to the development of the reservoir, and the beach facies reservoir has typical macroscopic heterogeneity in the early sedimentary period. This provides a material basis for the formation and evolution of the reservoir. The syngenic karstification controls the pore evolution of the early reservoir, and the supergene karstification determines the basic characteristics of the reservoir distribution. Burial karstification is beneficial to the optimization and reconstruction of the pre-stage pore and permeability layers. It is suggested that the evolution of shoal facies reservoir mainly goes through three stages, among which the deposition-syngenesis stage is the key period for the formation of early high quality reservoirs. The stage of supergene karst reconstruction is the period of large scale pore increasing of beach facies reservoir, and the period of burial diagenesis is the period of pore adjustment and stabilization of beach facies reservoir.
【作者單位】： 西南石油大學(xué)地球科學(xué)與技術(shù)學(xué)院;中國石油西南油氣田公司勘探開發(fā)研究院;
【基金】：四川省重點學(xué)科建設(shè)項目(項目編號:SZD0414)資助
【分類號】：P618.13

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