【摘要】：水驅(qū)波及系數(shù)是注水開發(fā)油田提高采收率的重要參數(shù),目前水驅(qū)波及系數(shù)的確定方法大多針對(duì)于整裝油藏,而斷塊油藏由于其復(fù)雜的地質(zhì)特征如斷層多、斷塊小、驅(qū)動(dòng)類型多、注采井網(wǎng)難以完善,使得其開發(fā)動(dòng)態(tài)特征與整裝油藏不同,其主控因素也有差異,因此利用常規(guī)方法計(jì)算出的波及系數(shù)偏差較大。大量研究表明油藏傾角、含油條帶寬度、油層厚度、滲透率、滲透率級(jí)差、井網(wǎng)密度、粘度比、注水體積等因素對(duì)油藏的水驅(qū)波及系數(shù)影響較大,但大多研究專注于對(duì)斷塊油藏的單一影響因素的分析,而未綜合分析各種因素的相對(duì)影響程度,沒有明確主控因素。因此本文基于以上問題,以東辛油田辛109斷塊為概念模型,建立了斷塊油藏地質(zhì)建模。根據(jù)數(shù)值模擬方法計(jì)算水驅(qū)波及系數(shù),根據(jù)波及系數(shù)與含水率的關(guān)系,得到反韻律油藏水驅(qū)波及系數(shù)比相同地質(zhì)條件下的正韻律油藏大。利用正交分析對(duì)波及系數(shù)的主控因素進(jìn)行分組,再根據(jù)多元回歸方法,分析影響斷塊油藏水驅(qū)波及系數(shù)的主控因素,得到新的規(guī)律公式,并進(jìn)行單因素的敏感性分析。研究結(jié)果表明:對(duì)于正韻律斷塊油藏,影響波及系數(shù)的主控因素依次為油水粘度比、滲透率級(jí)差、含油條帶寬度、滲透率及注水體積。而對(duì)于反韻律斷塊油藏,影響波及系數(shù)的主控因素依次為粘度比、滲透率、滲透率級(jí)差、含油條帶寬度、注采井距/含油條帶寬度、注水體積、傾角及油層厚度。再分別針對(duì)影響程度較大的粘度比、滲透率、滲透率級(jí)差、注水體積進(jìn)行敏感性分析,對(duì)影響程度進(jìn)行判定,并總結(jié)各主控因素對(duì)波及系數(shù)的影響規(guī)律。最后以東辛永12區(qū)塊為例進(jìn)行應(yīng)用研究,針對(duì)不同開發(fā)階段的不同開發(fā)策略分別求得當(dāng)前開發(fā)方式上的最終水驅(qū)波及系數(shù),繪制了可采儲(chǔ)量的采出程度隨含水率的變化曲線,并以實(shí)際采出程度與含水率數(shù)據(jù)進(jìn)行對(duì)比,分析當(dāng)前開發(fā)狀態(tài)下的采收率,提出了該區(qū)塊改善開發(fā)效果的實(shí)施建議,并預(yù)測(cè)了調(diào)整措施的開發(fā)效果。
[Abstract]:Water drive sweep coefficient is an important parameter to improve oil recovery in waterflooding development oilfield. At present, the determination method of water drive sweep coefficient is mostly aimed at the whole oil reservoir, while fault block reservoir has many complex geological characteristics such as many faults, small fault block and many driving types. It is difficult to perfect the injection-production pattern, which makes the development dynamic characteristics different from the whole oil reservoir, and the main control factors are different, so the sweep coefficient deviation calculated by the conventional method is large. A large number of studies show that the reservoir dip angle, including the width of Youtiao zone, reservoir thickness, permeability difference, well pattern density, viscosity ratio, water injection volume and other factors have great influence on the water drive sweep coefficient. However, most of the researches focus on the analysis of the single factor of fault block reservoir, but the relative influence degree of various factors is not analyzed synthetically, and the main control factor is not clearly defined. Therefore, based on the above problems, the reservoir geological model of fault block Xin109 in Dongxin Oilfield is established. According to the relationship between sweep coefficient and water cut, the sweep coefficient of water drive in reverse rhythm reservoir is larger than that in normal rhythm reservoir under the same geological conditions. The main control factors of the sweep coefficient are grouped by orthogonal analysis, and the main control factors affecting the sweep coefficient of water drive in fault block reservoir are analyzed according to the multivariate regression method, and a new law formula is obtained, and the sensitivity analysis of single factor is carried out. The results show that the main controlling factors affecting sweep coefficient are oil-water viscosity ratio, permeability difference, the width of Youtiao zone, permeability and water injection volume for the reservoir with positive rhythm fault block. For the reverse rhythm fault block reservoir, the main controlling factors affecting sweep coefficient are viscosity ratio, permeability difference, width of Youtiao zone, injection-production interval / Youtiao zone width, water injection volume, dip angle and reservoir thickness. Then the sensitivity analysis of viscosity ratio, permeability difference and water injection volume are carried out respectively, the influence degree is judged, and the influence law of each main control factor on sweep coefficient is summarized. Finally, the application of Xin-yong 12 block in East China is studied as an example. According to different development strategies in different development stages, the final water drive sweep coefficient of current development mode is obtained, and the curve of recovery degree of recoverable reserves with water cut is drawn. By comparing the actual recovery degree with the water content data, the oil recovery under the current development condition is analyzed, and the implementation suggestions for improving the development effect of the block are put forward, and the development effect of the adjustment measures is forecasted.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE357.6

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王一飛;;水平井網(wǎng)波及系數(shù)數(shù)值模擬研究[J];長(zhǎng)江大學(xué)學(xué)報(bào)(自科版);2015年02期

2 郭文敏;李治平;呂道平;賈國(guó)瀾;寇根;;基于一維巖心實(shí)驗(yàn)參數(shù)的三維油藏采收率預(yù)測(cè)方法及應(yīng)用[J];油氣地質(zhì)與采收率;2014年06期

3 王明;杜利;國(guó)殿斌;李中超;聶法健;;層間非均質(zhì)大型平面模型水驅(qū)波及系數(shù)室內(nèi)實(shí)驗(yàn)研究[J];石油實(shí)驗(yàn)地質(zhì);2013年06期

4 王端平;;考慮孔隙波及特征的水驅(qū)理論采收率計(jì)算方法[J];油氣地質(zhì)與采收率;2013年05期

5 余林瑤;唐海;劉桂玲;呂棟梁;傅春梅;;復(fù)雜邊界油藏水驅(qū)面積波及系數(shù)校正[J];特種油氣藏;2011年06期

6 尤啟東;周方喜;張建良;;復(fù)雜小斷塊油藏水驅(qū)開發(fā)效果評(píng)價(jià)方法[J];油氣地質(zhì)與采收率;2009年01期

7 李良華;;復(fù)雜斷塊油田脈沖不穩(wěn)定注水系統(tǒng)研究及應(yīng)用[J];內(nèi)蒙古石油化工;2008年02期

8 陳元千;郭二鵬;;預(yù)測(cè)水驅(qū)油田體積波及系數(shù)和可采儲(chǔ)量的方法[J];中國(guó)海上油氣;2007年06期

9 劉春林;楊清彥;李斌會(huì);蘭玉波;;三元復(fù)合驅(qū)波及系數(shù)和驅(qū)油效率的實(shí)驗(yàn)研究[J];大慶石油地質(zhì)與開發(fā);2007年02期

10 楊清彥;李斌會(huì);李宜強(qiáng);蘭玉波;;聚合物驅(qū)波及系數(shù)和驅(qū)油效率的計(jì)算方法研究[J];大慶石油地質(zhì)與開發(fā);2007年01期

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