發(fā)布時(shí)間：2018-04-18 05:41

  本文選題：薄差層 + 剩余油��； 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：目前,國(guó)內(nèi)大多數(shù)油田都已進(jìn)入高含水期甚至特高含水期開發(fā)階段,而采出程度相對(duì)較低,大量的剩余油還存在于地下,剩余油挖潛的潛力還很大。杏四~六面積北塊非主力油層綜合含水率達(dá)到93.75%,已進(jìn)入特高含水期,薄差層成為水驅(qū)開發(fā)的主要對(duì)象。因此,為保證油田長(zhǎng)期穩(wěn)產(chǎn),確保長(zhǎng)遠(yuǎn)的經(jīng)濟(jì)及社會(huì)效益,需對(duì)薄差層提高采收率進(jìn)行研究,對(duì)區(qū)塊層系細(xì)化、注采開發(fā)、井網(wǎng)方式進(jìn)行調(diào)整,并采取有效措施,優(yōu)化注采系統(tǒng),設(shè)計(jì)措施方案,形成薄差層綜合評(píng)價(jià)技術(shù)及挖潛技術(shù),有效動(dòng)用薄差儲(chǔ)層剩余油。本文在詳細(xì)了解區(qū)塊地質(zhì)特點(diǎn)和儲(chǔ)層特性的基礎(chǔ)上,利用現(xiàn)場(chǎng)所給的靜態(tài)地質(zhì)數(shù)據(jù)建立了區(qū)域地質(zhì)模型,考慮到計(jì)算機(jī)的計(jì)算能力,對(duì)地質(zhì)模型進(jìn)行了粗化。然后,根據(jù)現(xiàn)場(chǎng)提供的開發(fā)動(dòng)態(tài)數(shù)據(jù)進(jìn)行了歷史擬合,擬合的主要指標(biāo)包括:產(chǎn)液量、含水率和采出程度,擬合滿足精度3%。根據(jù)數(shù)值模擬結(jié)果,分析薄差儲(chǔ)層剩余油分布狀況,確定剩余油類型,通過量化各類油層的剩余油分布,研究加密調(diào)整潛力和挖潛措施,制定布井方案,并從開發(fā)效果和經(jīng)濟(jì)效益兩方面優(yōu)選布井方案。優(yōu)選結(jié)果顯示:薄差儲(chǔ)層分三套層系開采,即薩爾圖好層、薩爾圖差層和葡Ⅰ4組及以下油層,含水率下降了2.84%,采收率提高了5.05%,明顯提高了水驅(qū)開發(fā)效果。所得成果為改善薄差儲(chǔ)層動(dòng)用程度提供借鑒。
[Abstract]:At present, most oil fields in China have entered the development stage of high water cut period or even very high water cut stage, but the degree of recovery is relatively low, a large number of remaining oil still exist in the underground, and the potential of remaining oil is still very great.The comprehensive water cut of non-main reservoirs in the North Block of Apricot 4 ~ 6 has reached 93.75%, which has entered the period of extremely high water cut, and thin and poor layers have become the main object of water drive development.Therefore, in order to ensure long-term stable production of oil fields and ensure long-term economic and social benefits, it is necessary to study the improvement of recovery factor of thin and differential layers, refine the layer system of blocks, develop injection-production, adjust the pattern of well pattern, and take effective measures.Optimization of injection-production system, design of measures, formation of comprehensive evaluation technology of thin and differential layer and tapping technology, effective use of remaining oil in thin difference reservoir.Based on the detailed understanding of the geological characteristics and reservoir characteristics of the block, a regional geological model is established by using the static geological data given in the field. Considering the computing ability of the computer, the geological model is coarsened.Then, according to the development dynamic data provided by the field, the historical fitting is carried out. The main indexes of the fitting include: liquid yield, water content and extraction degree, and the fitting meets the accuracy of 3.According to the results of numerical simulation, the distribution of remaining oil in thin difference reservoir is analyzed, and the type of remaining oil is determined. By quantifying the distribution of remaining oil in all kinds of reservoirs, the potentiality of infilling adjustment and tapping potential are studied, and the plan of well layout is worked out.And from the development effect and economic benefit two aspects of optimal selection of well layout scheme.The optimal selection results show that the thin and poor reservoir is divided into three sets of production systems, that is, the good layer of Saltu, the poor layer of Saltu and the oil layer of Group 鈪，

本文編號(hào)：1767070