本文選題：層序地層　切入點：儲層分布　出處：《石油與天然氣地質(zhì)》2017年04期 　論文類型：期刊論文

【摘要】：通過薄片、巖心、測井和地震資料,對四川盆地川西坳陷中段龍門山前石羊場-金馬-鴨子河地區(qū)雷口坡組四段上亞段儲層高頻層序、沉積微相進行研究;結(jié)合儲層測井解釋結(jié)果,總結(jié)儲層在層序和沉積微相中的分布,分析層序沉積對儲層發(fā)育的控制。結(jié)果表明,雷四上亞段構(gòu)成一個完整四級層序,并可進一步劃分為多個五級和六級高頻層序。高頻層序的向上變淺沉積旋回特征明顯,橫向?qū)Ρ群谩＠姿亩紊蟻喍卧谘芯繀^(qū)主要為潮坪相沉積,主要發(fā)育潮間帶和潮下帶亞相,縱向上巖性多變,橫向上分布較為穩(wěn)定。潮間帶是儲層發(fā)育的有利亞相,可劃分為云坪、藻云坪和灰云坪等微相;潮下帶可劃分為灰坪、藻灰坪和云灰坪等微相。潮間帶粉晶云坪、藻(層疊)云坪是優(yōu)質(zhì)儲層發(fā)育的有利微相,一般發(fā)育于上、下兩個儲層段高頻層序中、上部,儲層旋回對比性好。高頻層序控制潮間帶有利沉積微相分布,對后期成巖作用也具有一定的影響,是儲層空間展布與儲層發(fā)育的關(guān)鍵控制因素。
[Abstract]:Through thin slice, core, logging and seismic data, the high frequency sequence and sedimentary microfacies of the upper submember of the 4th member of the Leikoupo formation in the Longmen Mountain Qianshiyangchang-Jinma-duck River area, Sichuan Basin are studied. Combined with the result of reservoir log interpretation, the distribution of reservoir in sequence and sedimentary microfacies is summarized, and the control of sequence deposition on reservoir development is analyzed. It can be further divided into five and six high frequency sequences. The upward shallow sedimentary cycle of the high frequency sequence is obvious, and the horizontal correlation is good. The upper submember of the fourth member of the Lei formation is mainly tidal flat facies in the study area, and the intertidal zone and subtidal zone subfacies are mainly developed. The intertidal zone can be divided into cloud flat, algal cloud flat and grey cloud flat, while the subtidal zone can be divided into grey flat, intertidal zone and calcareous flat, the intertidal zone is the reservoir developed facies, and can be divided into cloud flat, algal cloud flat and grey cloud flat. Microfacies such as algal ash flat and cloud ash flat. The intertidal powder crystal cloud flat and algal (stratified) cloud flat are the favorable microfacies for the development of high quality reservoir, which are generally developed in the high frequency sequence and upper part of the upper and lower reservoirs. The high frequency sequence controls the distribution of sedimentary microfacies in the intertidal zone and has a certain influence on the diagenesis in the later period, which is the key controlling factor of reservoir spatial distribution and reservoir development.
【作者單位】： 頁巖油氣富集機理與有效開發(fā)國家重點實驗室;中國石化海相油氣藏開發(fā)重點實驗室;中國石化石油勘探開發(fā)研究院;
【基金】：國家科技重大專項(2016ZX05017005) 中石化科技部項目(P16111)
【分類號】：P618.13

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