低渗透白云岩储层酸压物模与数模研究及应用
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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。
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 .
(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。
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 .
引文
(1) L.H. Morgenthaler: "Application of a three-dimensional Hydraulic Fracturing Simulator for Design of Acid Fracturing Treatments", SPE 25413.
(2) I.D. Palmer, etc: "A Model of the Hydraulic Fracturing Process for Elongated Vertical Fractures and Comparisons with Other Models", SPE 13864.
(3) I.D. Palmer, etc: "Modeling of Asymmetric Vertical Growth in Elongated Hydraulic Fractures and Applications to First MWX Stimulation", SPE 12879.
(4) 胥耘，黄志诚：“拟三维酸压设计软件研究与应用”，石油钻采工艺，1996年第18卷第1期．
(5) 纪禄军，郭大立，赵金洲等：“酸压模拟的三维模型及计算”，钻采工艺，2000年第23卷第1期．
(6) Van Domelen: "Optimizing Fracture Acidizing Treatment Design by Integrating Core Testing, Field Testing, and Computer Simulation",SPE 22393,1992.
(7) Ben Naceur, K. And Economides, M.J.: "Design and Evaluation of Acid Fracturing Treatments", SPE 18978, 1989.
(8) Gdanski, R.D. and Lee, W.S.: "On the Design of Fracture Acidizing Treatments", SPE 18885,1989.
(9) Olivier Lietard and Jonathan Bellarby: "Design, Execution, and Evaluation of Acid Treatments of Naturally Fractured Carbonate, Oil Reservoirs of the North Sea", SPEPF(May 1998).
(10) Vinod, Flindt, Card, Dowell Schlumberger and Mitchell: "Dynamic Fluid-Loss Studies in Low-permeability Formations With Natural Fractures", SPE 37486,1997.
(11) Antonin Settari: "Modeling of Acid-Fracturing Treatments",SPEF(Feb. 1993).
(2) I.D. Palmer, etc: "A Model of the Hydraulic Fracturing Process for Elongated Vertical Fractures and Comparisons with Other Models", SPE 13864.
(3) I.D. Palmer, etc: "Modeling of Asymmetric Vertical Growth in Elongated Hydraulic Fractures and Applications to First MWX Stimulation", SPE 12879.
(4) 胥耘，黄志诚：“拟三维酸压设计软件研究与应用”，石油钻采工艺，1996年第18卷第1期．
(5) 纪禄军，郭大立，赵金洲等：“酸压模拟的三维模型及计算”，钻采工艺，2000年第23卷第1期．
(6) Van Domelen: "Optimizing Fracture Acidizing Treatment Design by Integrating Core Testing, Field Testing, and Computer Simulation",SPE 22393,1992.
(7) Ben Naceur, K. And Economides, M.J.: "Design and Evaluation of Acid Fracturing Treatments", SPE 18978, 1989.
(8) Gdanski, R.D. and Lee, W.S.: "On the Design of Fracture Acidizing Treatments", SPE 18885,1989.
(9) Olivier Lietard and Jonathan Bellarby: "Design, Execution, and Evaluation of Acid Treatments of Naturally Fractured Carbonate, Oil Reservoirs of the North Sea", SPEPF(May 1998).
(10) Vinod, Flindt, Card, Dowell Schlumberger and Mitchell: "Dynamic Fluid-Loss Studies in Low-permeability Formations With Natural Fractures", SPE 37486,1997.
(11) Antonin Settari: "Modeling of Acid-Fracturing Treatments",SPEF(Feb. 1993).