本文選題：低滲透油藏 + 非線性滲流��； 參考：《中國石油大學(xué)(華東)》2015年碩士論文

【摘要】：低滲透油藏分布廣泛,儲(chǔ)量豐富,已經(jīng)成為國內(nèi)外油氣田勘探開發(fā)的重點(diǎn),在今后相當(dāng)長(zhǎng)時(shí)期內(nèi)低滲透油藏將是待發(fā)現(xiàn)石油資源及未來開發(fā)的主體對(duì)象。低滲透油藏與中高滲透油藏相比,在滲流特征、滲流機(jī)理及開發(fā)生產(chǎn)過程有較大不同,主要體現(xiàn)在滲透率極低、孔隙結(jié)構(gòu)復(fù)雜,滲流過程存在非達(dá)西滲流,國內(nèi)外大量學(xué)者對(duì)此進(jìn)行深入研究并發(fā)表大量研究成果,尤其針對(duì)滲流方程表征、孔隙結(jié)構(gòu)分析。而相對(duì)滲透率曲線是低滲透油氣田開發(fā)不可缺少的資料,目前相對(duì)滲透率曲線多數(shù)基于達(dá)西公式得出的,不符合低滲油藏滲流特點(diǎn)。巖石孔隙極小,啟動(dòng)壓力、毛管力現(xiàn)象比較嚴(yán)重,流速壓差關(guān)系是非線性的,對(duì)滲流規(guī)律及相滲規(guī)律存在較大的影響。目前還沒有考慮上述因素的相滲曲線計(jì)算方法。因此深入研究考慮非達(dá)西滲流規(guī)律及毛管力的相滲曲線計(jì)算方法,對(duì)合理開發(fā)該類油藏具有重要意義。本文結(jié)合相滲曲線石油行業(yè)標(biāo)準(zhǔn)的測(cè)定方法,提出考慮低滲透油藏非線性滲流特征的穩(wěn)態(tài)法相對(duì)滲透率計(jì)算方法。在借鑒經(jīng)典貝克萊-列維爾特驅(qū)油理論及非穩(wěn)態(tài)相滲計(jì)算方法,引入前人提出擬啟動(dòng)壓力滲流方程、兩參數(shù)滲流方程,發(fā)展貝克萊-列維爾特驅(qū)油理論,并分別推導(dǎo)了考慮啟動(dòng)壓力、毛管力和非線性特征的含水率方程、油水相滲計(jì)算公式�；诘蜐B油藏室內(nèi)測(cè)定巖心油水相對(duì)滲透率數(shù)據(jù),利用所推導(dǎo)公式,分析了非線性特征、滲透率、注入速度等對(duì)低滲透油藏相對(duì)滲透率曲線的影響。通過本論文研究,提出了對(duì)低滲透油藏相對(duì)滲透率曲線的測(cè)定及計(jì)算的新認(rèn)識(shí),為更好的開發(fā)該類油藏提供技術(shù)支持。
[Abstract]:Low permeability reservoirs are widely distributed and rich in reserves, which has become the focus of exploration and development of oil and gas fields at home and abroad. In the future, low permeability reservoirs will be the main objects of oil resources to be discovered and future development. Compared with medium and high permeability reservoirs, low permeability reservoirs have different percolation characteristics, percolation mechanism and development and production process, which are mainly reflected in extremely low permeability, complex pore structure and non-Darcy percolation in percolation process. A large number of scholars at home and abroad have carried out in-depth research and published a lot of research results, especially for the percolation equation characterization and pore structure analysis. The relative permeability curve is an indispensable data for the development of low permeability oil and gas fields. At present, most of the relative permeability curves are based on Darcy's formula and do not accord with the percolation characteristics of low permeability reservoirs. The porosity of rock is very small, the starting pressure and capillary force are serious, and the pressure difference of velocity is nonlinear, which has a great influence on the seepage law and the law of phase and permeability. At present, there is no calculation method of phase permeability curve considering the above factors. Therefore, it is of great significance to study the calculation method of phase permeability curve considering non-Darcy percolation law and capillary force for the rational development of this kind of reservoir. Based on the measurement method of petroleum industry standard for phase permeability curve, a steady state method for calculating relative permeability of low permeability reservoir considering nonlinear percolation characteristics is put forward in this paper. Based on the classical Berkeley Levier flooding theory and the unsteady phase permeability calculation method, the pseudo start pressure seepage equation, two parameter seepage equation and the Berkeley Levier flooding theory are introduced. The equation of water cut considering starting pressure, capillary force and nonlinear characteristics, and the formula of oil-water phase permeability are derived respectively. Based on the measured relative permeability data of core oil and water in low permeability reservoir, the influence of nonlinear characteristics, permeability and injection rate on the relative permeability curve of low permeability reservoir is analyzed by using the derived formula. Through the research in this paper, a new understanding of the determination and calculation of the relative permeability curve of low permeability reservoir is put forward, which provides technical support for the better development of this kind of reservoir.
【學(xué)位授予單位】：中國石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE312

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本文編號(hào)：1919048