發(fā)布時(shí)間：2018-01-08 01:17

  本文關(guān)鍵詞：油砂山網(wǎng)狀河三角洲沉積體系與構(gòu)型分析　出處：《燕山大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 油砂山油田 網(wǎng)狀河三角洲 濱淺湖 層次性分析 構(gòu)型單元

【摘要】：油砂山油田油層層數(shù)多、厚度薄、分布散,斷層發(fā)育、構(gòu)造復(fù)雜�；A(chǔ)地質(zhì)研究環(huán)節(jié)比較薄弱,油層動(dòng)用程度低,開(kāi)發(fā)效果不理想。該論文的目的就是利用巖心、測(cè)井和地面露頭資料查明其沉積體系、沉積微相,建立沉積模式,分析砂體的構(gòu)型,為油田下一步上產(chǎn)穩(wěn)產(chǎn)打好基礎(chǔ)。本文以油砂山油田為研究對(duì)象,結(jié)合區(qū)域背景資料,在對(duì)露頭詳細(xì)觀察、測(cè)量、編圖和分析的基礎(chǔ)上,通過(guò)巖心、化驗(yàn)分析資料和測(cè)井資料的深入研究,認(rèn)為研究區(qū)目的層段屬典型的網(wǎng)狀河三角洲-濱淺湖沉積體系。根據(jù)巖性、沉積構(gòu)造、測(cè)井相、砂體形態(tài)、縱向序列以及露頭小尺度的解剖,把目的層段劃分為網(wǎng)狀河三角洲平原、三角洲前緣、前三角洲、濱淺湖4個(gè)亞相,并進(jìn)一步細(xì)分出12種微相。詳細(xì)分析了各微相的沉積特征、演化規(guī)律,以及對(duì)油氣的控制作用,建立了網(wǎng)狀河三角洲-濱淺湖體系的沉積模式。沉積微相中的水下分流河道、河口砂壩和席狀砂的儲(chǔ)層物性比較好,油氣儲(chǔ)量豐度高,這三種沉積微相控制的油氣儲(chǔ)量總和占總儲(chǔ)量的76.67%;灘砂、遠(yuǎn)岸砂壩、水下天然堤和灘壩砂體儲(chǔ)層物性差,砂體厚度薄,油氣儲(chǔ)量豐度相對(duì)較低,分別占總儲(chǔ)量的7.01%,5.88%,5.10%和2.36%。三角洲平原網(wǎng)狀河道微相雖然粒度粗、砂體厚度大、物性好,但在斷層發(fā)育的油砂山油田中封閉性差,儲(chǔ)量豐度低,僅占總儲(chǔ)量的2.98%。利用層次分析和旋忯性對(duì)比方法,將油砂山油田儲(chǔ)層構(gòu)型劃分為八級(jí)層次,11種構(gòu)型單元:網(wǎng)狀河道、決口沉積單元、水下分流河道(主河道)、水下分流河道測(cè)緣、水下天然堤、壩核、壩側(cè)緣、席狀砂、灘壩、灘砂、遠(yuǎn)岸砂壩。各單元在平面上存在2種拼合關(guān)系,即連續(xù)過(guò)渡型和突變接觸型;剖面上存在3種疊置關(guān)系,即沖刷充填型、疊置接觸型、孤立分布型。完善了網(wǎng)狀河三角洲-濱淺湖沉積體系的地質(zhì)知識(shí)庫(kù),為后續(xù)的儲(chǔ)層隨機(jī)地質(zhì)建模和開(kāi)發(fā)方案調(diào)整奠定了基礎(chǔ)。
[Abstract]:Youshashan oilfield reservoir layers, the thickness of thin, scattered distribution, fault development, structure is complex. Part of basic geological research is relatively weak, the reservoir development degree is low, the effect is not ideal. The purpose of the paper is based on the core, logging and outcrop data to identify the sedimentary system, sedimentary microfacies, sedimentary model establishment, analysis the sand body configuration, lay the foundation for the next oil production stable. In Youshashan oilfield as the research object, combined with the regional background, in the measurement of outcrop detailed observation, based mapping and analysis, through in-depth study of rock, laboratory analysis data and logging data, to think the study area belongs to Braided River Delta - typical shore shallow lake sedimentary system. According to the lithology, sedimentary structure, logging facies, sand body morphology, anatomy and vertical sequence of small scale outcrop, the interval is divided into Braided River Delta plain, 涓夎媧插墠緙，

本文編號(hào)：1395031