發(fā)布時間：2018-04-24 17:51

  本文選題：碳酸鹽巖 + 自生酸��； 參考：《西南石油大學》2015年碩士論文

【摘要】：基質(zhì)酸化是解除污染、恢復產(chǎn)能的重要增產(chǎn)措施�，F(xiàn)場實踐結(jié)果表明,常規(guī)酸化對高溫儲層酸化不能達到要求,自生酸酸化克服了常規(guī)酸化的弱點,滿足了施工要求,其化作為儲層酸化的常用手段之一,在很多施工條件下表現(xiàn)優(yōu)于常規(guī)酸化。然而用自生酸對碳酸巖儲層的酸化改造存在以下問題：自生酸酸化施工中缺乏模擬手段,缺少優(yōu)化施工參數(shù)的方法,難以達到最優(yōu)酸化效果。由于自生酸本身的特殊性,建立適當?shù)哪Ｐ蛯ζ涫┕みM行模擬較為困難。 本文針對自生酸酸化特點,對自生酸酸化過程進行模擬,預測酸化效果,為施工提供理論指導,主要著眼于碳酸鹽巖自生酸基質(zhì)酸化合理注酸問題,開展了以下工作： (1)通過實驗測定了某類自生酸體系的酸液生成速度、測定了其酸巖反應動力學常數(shù),明確了自生酸的緩蝕、緩速性能,為模型建立提供理論支持。 (2)將傷害帶劃分為獨立單元進行傷害模擬分析,應用平面徑向滲流理論,耦合非均勻傷害模型和泥餅形成模型,綜合考慮儲層非均質(zhì)性和施工參數(shù)沿變化,建立了描述傷害程度和形態(tài)分布的非均勻傷害模型。 (3)將碳酸鹽巖儲層基質(zhì)酸化模型和自生酸等效模型結(jié)合,建立了能夠描述碳酸鹽巖儲層自生酸基質(zhì)酸化的系統(tǒng)模型。通過對不同參數(shù)進行對比分析,為自生酸酸化施工提供理論指導。 (4)建立了一套針對自生酸碳酸鹽巖儲層基質(zhì)酸化優(yōu)化方法,包括酸液性能評價、非均勻傷害模擬、自生酸酸化過程模擬、施工參數(shù)優(yōu)化,可用于自生酸基質(zhì)酸化方案。 通過本論文的研究,形成了一套包含：實驗室內(nèi)評價、儲層傷害模擬、酸化設(shè)計模擬、酸化后效果評估這幾個方面的較為完整的系統(tǒng),其適用于碳酸鹽巖儲層自生酸基質(zhì)酸化,實現(xiàn)了理論與實際的結(jié)合。
[Abstract]:Substrate acidification is an important measure to remove pollution and restore production capacity. The field practice results show that conventional acidification can not meet the requirements for acidification of high temperature reservoirs, and the acidation of autogenous acid can overcome the weakness of conventional acidification and meet the construction requirements, which is one of the common methods of reservoir acidification. In many construction conditions, performance is superior to conventional acidification. However, the following problems exist in the acidizing modification of carbonate reservoir with autogenous acid: the lack of simulation means in acidation construction and the lack of methods to optimize construction parameters are difficult to achieve optimal acidizing effect. Due to the particularity of autogenic acid itself, it is difficult to establish appropriate model to simulate its construction. In view of the characteristics of acidation, this paper simulates the process of acidation, predicts the effect of acidification, provides theoretical guidance for construction, mainly focuses on the rational injection of acid into carbonate acid matrix, and carries out the following work: 1) the acid formation rate of a kind of autogenic acid system was measured experimentally, the kinetic constants of acid rock reaction were determined, and the inhibition and inhibitive properties of the autogenous acid were determined, which provided theoretical support for the establishment of the model. (2) the damage zone is divided into independent units for damage simulation and analysis. The theory of plane radial percolation is applied to coupling the non-uniform damage model and the mud cake formation model, and the reservoir heterogeneity and construction parameters are considered along the variation. A non-uniform injury model was established to describe the degree and shape distribution of injury. 3) combining the acidification model of carbonate reservoir matrix with the equivalent model of authigenic acid, a systematic model which can describe the acidification of carbonate reservoir is established. Through the comparison and analysis of different parameters, it provides theoretical guidance for the construction of acidation. (4) A set of optimization methods for matrix acidizing in carbonate reservoirs of authigenic acid are established, including acid performance evaluation, non-uniform damage simulation, acidation process simulation and construction parameter optimization, which can be used for acidogenic acid matrix acidification scheme. Through the research of this paper, a set of relatively complete systems including laboratory evaluation, reservoir damage simulation, acidizing design simulation and effect evaluation after acidizing are formed, which are suitable for acidification of carbonate reservoir autogenic acid matrix. The combination of theory and practice is realized.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE357.2

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