【摘要】 在石油钻井开采等过程中研究压力在地层中的传播具有很重要的意义。特别是在进行井漏机理研究中,利用它可以进行分析井眼破裂压力、裂缝重启压力以及裂缝延伸压力等。使用有限差分法近似地求得近井壁地层的压力分布。利用此方法,可以求得任意时刻井壁压力随井深的分布,任意时刻、任意井深处井壁压力的径向分布,任意点压力随时间的变化,从而进一步了解压力在石油工程上的影响。更多还原

【Abstract】 The research about pressure propagation in stratum in the course of drilling,oil recovery and so on is very important to the oil production.The influence of pressure to wellbore fracturing pressure,fracture reopen pressure and fracture extension pressure can be used in the study of lost circulation mechanism.By applying the finite difference method,we can approximately achieve the pressure distribution wellbore neighborhood,in the same times, we also achieve the wellbore pressure distribution along depth anytime and the wellbore pressure radial distribution anytime,anywhere.The study will be helpful to the concrete construction work.更多还原