【摘要】：目前,葡西油田已經(jīng)進(jìn)入了勘探開發(fā)的中后期,存在“儲(chǔ)層發(fā)育不穩(wěn)定、砂體零散分布、油水分布復(fù)雜、以巖性油氣藏為主”等問題,導(dǎo)致油田在開采過(guò)程中平面矛盾突出,產(chǎn)量遞減快,開采難度相對(duì)較大。針對(duì)以上問題,本文以高分辨率層序地層學(xué)、沉積學(xué)等理論為指導(dǎo),建立了全區(qū)統(tǒng)一精細(xì)的高分辨率層序地層格架,將葡西油田黑帝廟油層(黑Ⅱ油層組)劃分為10個(gè)沉積時(shí)間單元。通過(guò)對(duì)研究區(qū)巖芯和測(cè)井資料的分析,落實(shí)了研究區(qū)目的層沉積亞相類型,認(rèn)為研究區(qū)黑帝廟油層主要為三角洲前緣沉積,主要發(fā)育水下分流河道、河口壩、遠(yuǎn)砂壩、席狀砂、分流間泥等幾種微相類型,并繪制了10個(gè)沉積單元的沉積微相展布圖。同時(shí),開展了單砂體級(jí)流體性質(zhì)及單砂層級(jí)物性參數(shù)解釋研究。在上述研究的基礎(chǔ)上,應(yīng)用Petrel地質(zhì)建模軟件完成了葡西油田古1區(qū)黑Ⅱ油層組16條斷層、10個(gè)沉積單元的構(gòu)造建模工作,并針對(duì)所掌握的古1區(qū)實(shí)際情況采用了“相控條件下的序貫指示模擬”方法建立了黑Ⅱ油層組10小層的沉積相模型。同時(shí),在隨機(jī)建模理論和變差函數(shù)理論的指導(dǎo)下,將研究區(qū)內(nèi)220口井的孔隙度、滲透率、飽和度等儲(chǔ)層物性參數(shù)隨機(jī)模擬到空間網(wǎng)格,完成儲(chǔ)層屬性模型建立。在建立起精細(xì)的屬性模型的基礎(chǔ)上,計(jì)算出模型地質(zhì)儲(chǔ)量。最終得到的三維儲(chǔ)層地質(zhì)模型,符合前期地質(zhì)認(rèn)識(shí),不僅精確刻畫了地下儲(chǔ)層的非均質(zhì)性、揭示了油氣的分布規(guī)律,同時(shí)也可為數(shù)值模擬軟件提供準(zhǔn)確的三維地質(zhì)體,這為油田勘探開發(fā)人員準(zhǔn)確計(jì)算剩余油分布,制定合理的油氣田開發(fā)方案提供一定的指導(dǎo)作用。
[Abstract]:At present, the Puxi oilfield has entered the middle and late stage of exploration and development, and there are some problems such as "unstable reservoir development, scattered distribution of sand bodies, complex distribution of oil and water, and mainly lithologic reservoirs", which lead to prominent plane contradictions in the process of exploitation. Production decline quickly, mining is relatively difficult. Based on the theories of high-resolution sequence stratigraphy and sedimentology, a unified and fine high-resolution sequence stratigraphic framework has been established in this paper. The Heidimiao reservoir in Puxi Oilfield is divided into 10 sedimentary time units. Based on the analysis of the core and logging data in the study area, the sedimentary subfacies types of the target layer in the study area are confirmed. It is considered that the Heidimiao oil layer in the study area is mainly delta front sedimentary, mainly developed underwater distributary channel, estuarine dam, far sand dam, sheet sand, etc. Several microfacies types such as distributary mud and other microfacies types are plotted and the sedimentary microfacies distribution of 10 sedimentary units is plotted. At the same time, the interpretation of single sand level fluid properties and single sand level physical parameters was carried out. On the basis of the above research, the structural modeling of 16 faults and 10 sedimentary units of Hei 鈪，

本文編號(hào)：2166900