發(fā)布時(shí)間：2018-06-01 04:16

  本文選題：儲(chǔ)層傷害 + 鉆井液　； 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：儲(chǔ)層傷害是指從打開儲(chǔ)層開始,至原油開采的過(guò)程中,由于人為因素造成的油井產(chǎn)能下降,甚至于喪失產(chǎn)能的現(xiàn)象。它發(fā)生在對(duì)地下油氣儲(chǔ)層的開采過(guò)程中,包括采油、鉆井、水力壓裂、修井等各個(gè)階段。因此,為了有效的對(duì)儲(chǔ)層中的油氣進(jìn)行開采,有必要對(duì)儲(chǔ)層傷害進(jìn)行評(píng)價(jià),選取、建立合適的實(shí)驗(yàn)分析方法、數(shù)學(xué)模型和模擬技術(shù)來(lái)了解、評(píng)價(jià)、診斷、治理、控制和預(yù)防儲(chǔ)層傷害問(wèn)題。 本文著眼于砂巖儲(chǔ)層鉆井液傷害、黏土水化膨脹傷害、微粒運(yùn)移傷害以及無(wú)機(jī)結(jié)垢?jìng)?主要開展了以下工作： (1)在鉆井液傷害機(jī)理分析的基礎(chǔ)上,建立了泥餅?zāi)Ｐ�、傷害半徑模型、傷害滲透率模型,結(jié)合Furui水平井表皮系數(shù)模型,可以求解出鉆井液對(duì)非均勻儲(chǔ)層水平井的傷害程度以及傷害范圍； (2)在黏土水化膨脹機(jī)理分析的基礎(chǔ)上,利用臨界鹽度方程,結(jié)合黏土水化膨脹滲透率傷害方程,可判斷水化膨脹傷害程度； (3)在微粒運(yùn)移機(jī)理分析的基礎(chǔ)上,建立了微粒運(yùn)移模型,通過(guò)討論單個(gè)微粒的受力,建立起微粒的受力平衡方程,推導(dǎo)出了滯留微粒、堵塞微粒以及懸浮微粒的連續(xù)性方程。利用這些模型,可求解出儲(chǔ)層內(nèi)不同時(shí)間、不同位置處的微粒濃度。引入Carman-Kozeny水利管模型以及Civan滲透率下降模型,可求解出微粒運(yùn)移對(duì)儲(chǔ)層滲透率造成的傷害； (4)從無(wú)機(jī)垢的形成過(guò)程以及影響無(wú)機(jī)沉淀形成的因素兩個(gè)方面闡述無(wú)機(jī)垢?jìng)C(jī)理。利用Oddo-Tomson修正飽和指數(shù)法,結(jié)合碳酸鈣最大結(jié)垢量預(yù)測(cè)方程、結(jié)垢半徑方程和滲透率下降模型,可模擬碳酸鈣結(jié)垢對(duì)儲(chǔ)層的傷害； (5)針對(duì)國(guó)外某油田M井,進(jìn)行實(shí)例分析,模擬不同類型傷害對(duì)M井的傷害程度并利用油藏?cái)?shù)值模擬的方法,模擬對(duì)比了M井傷害前后的產(chǎn)能。
[Abstract]:Reservoir damage refers to the decline or even loss of production capacity caused by human factors during the process of opening up the reservoir and producing crude oil. It occurs in the production of underground oil and gas reservoir, including oil recovery, drilling, hydraulic fracturing, workover and other stages. Therefore, in order to effectively exploit the oil and gas in the reservoir, it is necessary to evaluate, select, establish appropriate experimental analysis methods, mathematical models and simulation techniques to understand, evaluate, diagnose and manage the reservoir damage. Control and prevention of reservoir damage. This paper focuses on the damage of sandstone reservoir drilling fluid, clay hydration expansion injury, particle migration injury and inorganic scaling injury. The main work is as follows: 1) based on the analysis of the damage mechanism of drilling fluid, the mud cake model, damage radius model, damage permeability model and Furui horizontal well skin coefficient model are established. The damage degree and damage range of drilling fluid to horizontal wells in non-uniform reservoir can be calculated. 2) on the basis of the analysis of hydration expansion mechanism of clay, the damage degree of hydration expansion can be judged by using the critical salinity equation and the damage equation of hydration expansion permeability of clay. 3) based on the analysis of particle migration mechanism, a particle migration model is established. By discussing the force of a single particle, the equilibrium equation of the particle force is established, and the continuity equations of the retained particle, the blocked particle and the suspended particle are derived. By using these models, the particle concentration at different time and position in the reservoir can be calculated. The damage caused by particle migration on reservoir permeability can be solved by introducing Carman-Kozeny hydraulic pipe model and Civan permeability decreasing model. 4) the damage mechanism of inorganic scale is expounded from two aspects: the formation process of inorganic scale and the factors affecting the formation of inorganic precipitate. The damage of calcium carbonate scaling to reservoir can be simulated by Oddo-Tomson modified saturation index method combined with the prediction equation of the maximum scaling amount of calcium carbonate the scaling radius equation and the permeability decreasing model. 5) aiming at M well in a foreign oil field, an example analysis is carried out to simulate the damage degree of different types of damage to M well and to simulate and contrast the productivity of M well before and after injury by using reservoir numerical simulation method.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE258

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本文編號(hào)：1962805