低渗透白云岩储层酸压物模与数模研究及应用

【作者】 王康军；

【导师】 赵金洲；

【作者基本信息】 西南石油学院 ， 油气田开发， 2003， 硕士

【摘要】 本文主要研究低渗透非均质白云岩储层的酸压技术。对于该特殊储层不能沿用普遍使用的滤失模型和裂缝三维延伸模型。需要研究适合于该储层的酸液滤失模型，酸岩反应模型，裂缝三维延伸模型。因此，本文主要完成以下研究内容： (1)白云岩储层酸岩反应物理模型研究； (2)白云岩储层酸液滤失物理模型与数学模型研究； (3)酸压裂缝三维延伸数学模型研究； (4)三维酸液流动反应数学模型研究； (5)三维酸压模拟设计软件研制及应用。 通过以上研究工作，得出了以下结论： (1)本文建立的酸岩反应、酸液滤失物理模型具有较好的实用性； (2)实验得到的酸岩反应动力学参数和动力学方程、考虑酸蚀吲孔的酸液滤失计算模型可靠。 (3)三维裂缝延伸数学模型中，考虑了酸液在纵向上的流动和反应以及纵向上的压力变化，更接近实际。 (4)本文提出的针对川东石炭系白云岩储层的酸压工艺，经过现场实验，取得了良好的效果。 根据上述的物理模型和数学模型理论研究，利用Visual Basic 6.0编程语言编制了三维酸压设计软件，以便更好地指导酸压设计。更多还原

【Abstract】 This article principally researches the fracture acidizing technology of Carboniferous dolomite reservoir in the east of Sichuan. The universally used leakoff model and fracture three-dimensional extend model are not appropriate for the special reservoir. It is necessary to research a new acid fluid loss model, acid-rock reaction model and crack three-dimensional extend model, which are fit for the special reservoir. Accordingly, this article principally finishes the following content:(1) Research the acid-rock reaction physical model and mathematical model for dolomite reservoir;(2) research the acid leakoff physical model and mathematical model for dolomite reservoir;(3) Research the acidizing fracture three-dimensional extend mathematical model;(4) Research the three-dimensional acid flow and acid-rock reaction model;(5) Develop the three-dimensional fracture acidizing design software and its application.Through the research work, the following conclusions are derived:(1) The acid-rock reaction model and acid leakoff physical model of this article have good practicability;(2) We get acid-rock reaction dynamic parameters and dynamical equations through experiment, erect acid leakoff model which takes the erosion into account. They are more credible.(3) We get the three-dimensional fracture extend mathematical model, which takes acid flow ,acid-rock reaction and pressure change in asymmetrical longitudinal into consideration. The model approaches practical condition.(4) The article presents a fracture acidizing craft proved to be effective in field practice.With the aforesaid physical models and theory, we develop three-dimensional fracture acidizing design software by using Visual Basic 6.0 programming language. The software can supervise fracture acidizing design .更多还原