本文選題：開發(fā)效果評價 + 數(shù)值模擬��； 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：把空氣注入輕質(zhì)油油藏可以認(rèn)為是一種新的三次采油提高采收率的方法。在空氣注入輕質(zhì)油油藏時,氧氣同原油之間就會發(fā)生放熱化學(xué)反應(yīng),發(fā)生的這些反應(yīng)主要是氧化反應(yīng),不僅產(chǎn)生熱量而且伴隨氧的消耗會產(chǎn)生碳的氧化物(主要是CO和CO2)。本文所研究的沈161區(qū)塊為深層低滲透輕質(zhì)油油藏,目前已經(jīng)進入注水開發(fā)中后期開發(fā)階段,主要面臨著注水壓力高,注水困難和采出程度低等問題。注水開發(fā)18年之后,斷塊采出程度僅為13.0%,目前還有48.7681×104t剩余可采儲量未有效動用,油田下步開發(fā)仍具備較大的潛力。因此,明確剩余油分布規(guī)律,研究油藏高壓注空氣提高采收率成為本次研究的主要問題。根據(jù)研究區(qū)實際靜態(tài)數(shù)據(jù),應(yīng)用經(jīng)驗公式法和水驅(qū)規(guī)律曲線法等油藏工程分析方法,著重研究了水驅(qū)采收率、含水變化規(guī)律、目前井網(wǎng)井距適應(yīng)性等方面;在精細三維地質(zhì)模型的基礎(chǔ)上,利用Eclipse數(shù)值模擬軟件對研究區(qū)進行了剩余油分布規(guī)律進研究;根據(jù)研究區(qū)剩余油分布規(guī)律及開發(fā)特征,建立了高壓空氣驅(qū)數(shù)值模擬模型,對試驗區(qū)進行選擇,并對高壓注空氣的井網(wǎng)、井距進行了初步論證,給出了合理的注氣參數(shù),在此基礎(chǔ)上,對研究區(qū)進行整體高壓空氣驅(qū)方案預(yù)測,生產(chǎn)指標(biāo)和經(jīng)濟評價表明,研究區(qū)進行高壓注空氣后,區(qū)塊的采收率為10.02%,達到了預(yù)期的效果,為現(xiàn)場實施高壓注空氣技術(shù)提供了理論基礎(chǔ),具有重要的指導(dǎo)意義。
[Abstract]:Injecting air into light oil reservoir can be regarded as a new method to improve oil recovery by tertiary oil recovery. When air is injected into light oil reservoir, exothermic chemical reactions occur between oxygen and crude oil. These reactions are mainly oxidation reactions, which not only produce heat but also produce carbon oxides (mainly CO and CO 2) with oxygen consumption. The Shen161 block studied in this paper is a deep low permeability light oil reservoir. It has entered the middle and late stage of water injection development at present. It is mainly faced with the problems of high water injection pressure, difficult water injection and low recovery degree. After 18 years of water injection development, the recovery degree of fault block is only 13.00.At present, there are still 48.7681 脳 104t remaining recoverable reserves that have not been used effectively, and the next step development of oil field still has great potential. Therefore, it is the main problem of this study to determine the distribution of remaining oil and to study high pressure air injection to improve oil recovery. According to the actual static data of the study area, the reservoir engineering analysis methods such as empirical formula method and water drive law curve method are applied to study the water drive recovery factor, water cut variation law, and the adaptability of well spacing at present. On the basis of fine 3D geological model, the residual oil distribution law in the study area was studied by using Eclipse numerical simulation software, and the numerical simulation model of high pressure air drive was established according to the distribution law and development characteristics of remaining oil in the study area. The experimental area is selected, and the well pattern and well spacing of high pressure air injection are preliminarily demonstrated, and reasonable gas injection parameters are given. On the basis of this, the overall high pressure air drive scheme prediction, production index and economic evaluation are carried out in the study area. After high pressure air injection in the study area, the recovery factor of the block is 10.02, which achieves the expected effect, which provides a theoretical basis for the field implementation of high pressure air injection technology and has important guiding significance.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE357

【參考文獻】

相關(guān)期刊論文 前2條

1 付德奎;馮振雨;曲金明;鄧生輝;王恩輝;;剩余油分布研究現(xiàn)狀及展望[J];斷塊油氣田;2007年02期

2 劉寶s，

本文編號：2104082