气井高能气体压裂裂缝系统动力学模型研究
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摘要
结合燃爆气体动力学、岩石力学、流体动力学和渗流力学的基本原理,建立了高能气体压裂过程中气井射孔孔眼泄流、裂缝内流体压力分布、裂缝壁面流体渗漏、裂缝起裂判据以及裂缝延伸速度等相关的动力学模型,由此建立了高能气体压裂过程中裂缝系统延伸的气/液/固耦合动力学模型,为精确模拟高能气体压裂过程中的裂缝形态变化提供理论基础。
By using the basic principle of blasting gas dynamics,rock mechanics,fluid dynamics and fluid mechanics in porous medium,the paper establishes the dynamics model including flush flow of perforation hole in HEGF,distribution of fluid pressure in fracture,fluid leakage of walls in fracture,starting-crack criterion of fracture and extension speed of fracture. Based on this result,we develop gas/liquid/solid coupling dynamics model of fracturing extension in HEGF,and provide the theoretical basis for simulating the changes of fracture geometric shape in HEGF accurately.
By using the basic principle of blasting gas dynamics,rock mechanics,fluid dynamics and fluid mechanics in porous medium,the paper establishes the dynamics model including flush flow of perforation hole in HEGF,distribution of fluid pressure in fracture,fluid leakage of walls in fracture,starting-crack criterion of fracture and extension speed of fracture. Based on this result,we develop gas/liquid/solid coupling dynamics model of fracturing extension in HEGF,and provide the theoretical basis for simulating the changes of fracture geometric shape in HEGF accurately.
引文
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[14]阿特金森B K.岩石断裂力学[M].尹祥础,修济刚.北京:地震出版社,1992.
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[18]张志呈.岩石断裂控制爆破的裂纹扩展[J].西南工学院学报,2000,15(1):60-66.
[19]Tada H,Paris P C,Irwin G R.The stress analysis of crack handbook[M].Del Res,Corp Hellertown,1973.
[20]吴飞鹏,蒲春生,任山,等.燃爆诱导酸化压裂在川西气井中的先导试验[J].中国石油大学学报,2008,32(6):101-103,108.
[2]张琪.采油工程原理与设计[M].东营:石油大学出版社,2005.
[3]王安仕,秦发动.高能气体压裂技术[M].西安:西北大学出版社,1998.
[4]杨卫宇,周春虎,赵刚.高能气体压裂瞬态压力耦合分析[J].石油学报,1993,14(3):127-134.
[5]王爱华,李-,赵峰洛.用高能气体压裂模型研究裂缝条数[J].断块油气田,2000,7(5):56-59.
[6]杨小林,王梦恕.爆生气体作用下岩石裂纹的扩展机理[J].爆炸与冲击,2001,21(2):111-116.
[7]王保国,刘淑艳,黄伟光.气体动力学[M].北京:北京理工大学出版社,2005.184-188.
[8]卢文波,陶振宇.爆生气体驱动的裂纹扩展速度研究[J].爆炸与冲击,1994,14(3):264-267.
[9]陈莉静,李宁,王俊奇.高能复合射孔爆生气体作用下预存裂缝起裂扩展研究[J].石油勘探与开发,2005,32(6):91-93,120.
[10]Nilson R H,Proffer W J,Duff R E.Modelingof Gas driven fractures induced by propellant combustion within a borehole[J].Int J Rock Mech Min Sci&Geomech,1985,22(1):3-19.
[11]张烈辉,朱水桥,王坤,等.高速气体非达西渗流数学模型[J].新疆石油地质,2004,25(2):165-167.
[12]Cornell D,Katz D L.Flow of gases through consolidated porous media[J].Industrial and Engineering Chemistry,1953,45(3):2145.
[13]Geertsma J.Estimating the coefficient of inertial resistance in fluid flow through porous media[J].SPE,1974,67(10):445-450.
[14]阿特金森B K.岩石断裂力学[M].尹祥础,修济刚.北京:地震出版社,1992.
[15]李永东.理论应用断裂力学[M].北京:兵器工业出版社,2005.
[16]George E,Zacharias A,Eleftherios L.Effect the fracture process zone in directed crack propagation in borehole blasting[J].SPE28085,1994:463-470.
[17]曹言光,刘长松,林平,等.应用断裂力学理论建立油气井压裂时岩石破裂压力计算模型[J].西安石油学院学报(自然科学版),2003,18(4):36-39.
[18]张志呈.岩石断裂控制爆破的裂纹扩展[J].西南工学院学报,2000,15(1):60-66.
[19]Tada H,Paris P C,Irwin G R.The stress analysis of crack handbook[M].Del Res,Corp Hellertown,1973.
[20]吴飞鹏,蒲春生,任山,等.燃爆诱导酸化压裂在川西气井中的先导试验[J].中国石油大学学报,2008,32(6):101-103,108.
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