本文選題：聚驅(qū) + 注入?yún)?shù)　； 參考：《東北石油大學》2017年碩士論文

【摘要】：D6試驗區(qū)儲層屬于中低滲透儲層,經(jīng)過30多年的開發(fā),已經(jīng)進入了中高含水期,試驗區(qū)存在地層非均質(zhì)性強、采出程度高、含水上升速度快等問題,導致油田注水開發(fā)效果變差,為改善試驗區(qū)塊的生產(chǎn)狀況,進一步挖潛剩余油,試驗區(qū)準備在2016年8月開展聚驅(qū),區(qū)塊內(nèi)共有采出井36口,注入井19口。本文應用Petrel軟件建立了試驗區(qū)的地質(zhì)模型,在此基礎上建立水驅(qū)數(shù)值模擬模型,進行了水驅(qū)歷史擬合,分析了水驅(qū)剩余油分布特征及主要挖潛部位,將試驗區(qū)內(nèi)水驅(qū)剩余油主要分為厚油層頂部、薄差層和注采不完善三種類型,研究發(fā)現(xiàn)該試驗區(qū)60%以上的剩余油主要富集在有效厚度在1m以上、滲透率在150×10-3μm2以上的主河道、主體席狀砂和過渡相河道中,所以將該部分剩余油富集區(qū)作為主要挖潛對象。利用聚驅(qū)數(shù)值模擬模型進行聚驅(qū)注入?yún)?shù)進行優(yōu)化,優(yōu)選聚合物的注入濃度為800mg/L,注入速度為0.15PV/a,總的聚合物用量為520mg/L·PV。根據(jù)單井配產(chǎn)配注方法對試驗區(qū)內(nèi)的生產(chǎn)井和注入井進行配產(chǎn)配注,數(shù)值模擬的預測結(jié)果表明,該試驗區(qū)聚驅(qū)最終采收率為49.56%,較水驅(qū)采收率提高了7.65%。D6試驗區(qū)塊開始注聚后,收集聚驅(qū)階段的生產(chǎn)動態(tài)資料,開展聚驅(qū)跟蹤數(shù)值模擬研究,對具有潛力的井層提出挖潛措施,包括采出井的壓裂和注入?yún)?shù)的適當調(diào)整。
[Abstract]:The reservoir in D6 experimental area belongs to middle and low permeability reservoir. After more than 30 years of development, it has entered the period of middle and high water cut. There are some problems in the test area, such as strong heterogeneity of formation, high degree of production, and fast rising speed of water cut, etc. In order to improve the production condition of the test block and further tap the remaining oil, the test area is prepared to carry out polymer flooding in August 2016. There are 36 production wells and 19 injection wells in the block. In this paper, the geological model of the experimental area is established by using Petrel software. On the basis of this, the numerical simulation model of water drive is established, and the historical fitting of water drive is carried out, and the distribution characteristics of remaining oil and the main potential sites of water drive are analyzed. The remaining oil of water drive in the experimental area is divided into three types: the top of thick oil layer, the thin layer and the imperfect injection-production zone. It is found that more than 60% of the remaining oil in the test area is mainly enriched in the main channel with effective thickness of more than 1m and permeability of 150 脳 10 ~ (-3) 渭 m ~ (2). In the main bedding sand and transitional channel, this part of the remaining oil rich area is regarded as the main target of tapping potential. The polymer injection parameters were optimized by using a numerical simulation model of polymer flooding. The optimal polymer injection concentration was 800 mg / L, the injection rate was 0.15 PVP / a, and the total amount of polymer was 520mg/L PVP. According to the method of single well production and injection, the production wells and injection wells in the test area are distributed and injected. The prediction results of numerical simulation show that the final recovery factor of polymer flooding in the test area is 49.56, which is higher than that of water drive oil recovery after the block of 7.65%.D6 experimental area begins to be injected. The production dynamic data of polymer flooding stage are collected, and the numerical simulation of polymer flooding tracking is carried out, and the potential measures are put forward, including fracturing of production wells and proper adjustment of injection parameters.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TE357.46
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本文編號：1927173