本文關(guān)鍵詞：綏中36-1油田湖相三角洲前緣儲層構(gòu)型模式　出處：《中國地質(zhì)大學(xué)(北京)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 界面 構(gòu)型 河口壩 三角洲前緣 綏中36-1油田

【摘要】：綏中36-1油田地處渤海灣盆地,具體位于遼東灣下遼河凹陷遼西低凸起中部,是一個斷裂背斜油氣藏。經(jīng)過30年的開發(fā),綜合含水高達(dá)75%以上,高壓差、高出程度及注采井網(wǎng)不完善導(dǎo)致油田縱向和平面注采的不平衡和油層動用不平衡;儲層平面、層間和層內(nèi)非均質(zhì)性導(dǎo)致高滲條帶和平面剩余油分布不清楚,根本原因是小層砂體內(nèi)部構(gòu)型即多級次的儲層單元和滲流屏障導(dǎo)致的儲層單元內(nèi)部質(zhì)量差異,因此本次研究將對該區(qū)三角洲前緣儲層的構(gòu)型進(jìn)行精細(xì)的分級解剖,從而為今后完善井網(wǎng)和調(diào)整開發(fā)提供參考。論文以測井資料豐富的東營組東二段Ⅰ油組為研究對象,以綏中36-1油田巖心、測井、分析化驗資料和動態(tài)資料為基礎(chǔ),通過沉積學(xué)方法和層序地層學(xué)方法對研究區(qū)儲層構(gòu)型逐級解剖。在總結(jié)前人研究的基礎(chǔ)上,確認(rèn)了研究區(qū)東二段上段時期雙物源的沉積模式,通過巖性特征、沉積構(gòu)造和測井?dāng)?shù)據(jù)的分析,認(rèn)為研究區(qū)西部古綏中水系的沉積模式為辮狀河三角洲沉積,而研究區(qū)東部古復(fù)州水系的沉積模式為曲流河三角洲沉積。在沉積模式的指導(dǎo)下,將東二段Ⅰ油組劃分6級構(gòu)型單元,并在全區(qū)內(nèi)對2級和3級構(gòu)型單元對比。在構(gòu)型單元劃分的基礎(chǔ)上,逐級解剖構(gòu)型單元,其中2級構(gòu)型單元有兩種類型,分別是曲流河三角洲和辮狀河三角洲,重點對3級構(gòu)型單元類型展開分析,主要3級構(gòu)型單元類型有水下分流河道、河口壩和前緣席狀砂等,并描繪了不同類型3級構(gòu)型單元的垂向和橫向接觸關(guān)系、剖面模式以及平面分布模式。由于4級構(gòu)型單元的連續(xù)性較差,無法在全區(qū)范圍內(nèi)進(jìn)行4級構(gòu)型界面的對比,因此在對4級構(gòu)型單元的研究時,精選河口壩型4級構(gòu)型單元作為研究對象,并在研究區(qū)內(nèi)部精選河口壩研究區(qū)A-C。將河口壩構(gòu)型單元解剖為構(gòu)型界面、增生體和泥質(zhì)披覆體三大要素,把4級構(gòu)型單元增生體分為退積型、加積型和進(jìn)積型三類,同時計算了增生體間夾層的產(chǎn)狀和分布模式,并在剖面上刻畫了構(gòu)型要素的分布和4級構(gòu)型單元的接觸關(guān)系。
[Abstract]:Suizhong 36-1 oil field is located in the Bohai Bay basin, located in the middle of the low uplift in the west of Liaohe sag, Liaodong Bay, and is a faulted anticline reservoir. After 30 years of development, the comprehensive water content is more than 75%. The difference of high pressure, high degree of production and imperfect pattern of injection-production well lead to the imbalance of vertical and plane injection and production and the unbalance of reservoir production. The heterogeneity of reservoir plane, interlayer and intra-layer leads to unclear distribution of high permeability strip and plane residual oil. The fundamental reason is that the internal quality of the reservoir unit is different due to the configuration of the small sand body, that is, the multi-stage reservoir unit and the percolation barrier. Therefore, this study will carry on the fine classification anatomy to the delta front reservoir configuration in this area. So as to provide a reference for the future improvement of well pattern and adjustment and development. This paper takes Dongying formation of Dongying formation with abundant logging data as the research object and takes the core of Suizhong 36-1 oilfield as the research object. Based on the analysis of laboratory data and dynamic data, the reservoir configuration in the study area was dissected by sedimentology and sequence stratigraphy. Through the analysis of lithologic characteristics, sedimentary structure and logging data, it is considered that the sedimentary model of paleo-Suizhong drainage system in the western part of the study area is braided river delta deposit. The sedimentary model of the paleofuzhou drainage system in the eastern part of the study area is meandering river delta deposition. Under the guidance of the sedimentary model, the oil formation 鈪，

本文編號：1396221