特低渗油藏压裂井注采井距与注水见效关系
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摘要
针对目前注采井距与注水见效关系研究中缺乏对应压裂井研究的现状,以压裂井压力波椭圆等压面传播理论为基础,推导了特低渗油藏压裂井注水见效时间与椭圆动边界半径、启动压力梯度、油井产能水平和原油黏度等的综合关系,并对上述因素对注水见效时间的影响进行了研究。结果表明,这些因素对注水见效均有较大影响,压裂井对上述因素影响的敏感性远小于未压裂井,特别在目标油藏原油黏度较大时,此种差异表现得更为明显,合理注采井距的选择是多因素下主次要矛盾共同作用的结果,其选择应放在优化、高效开发油藏的大系统中考虑。
Aiming at the situation that the fracturing wells are lack in the study of injector-producer spacing and waterflooding response and based on the theory of pressure wave ellipse face spread,the relationship of waterflooding response time and elliptic move boundary,start-up pressure gradient,oil well productivity and oil viscosity is deduced.Furthermore,the influence factors of waterflooding response time are researched.Results show that the above factors have great influences on waterflooding response time.Sensitivity for fracturing wells is far less than that for no-fracturing wells.Especially when the oil viscosity of target reservoir is high,the difference is more obvious.Choice of reasonable injector-producer spacing is common action result of prime and secondary contradiction,so the choice should be optimized in the large system development.
Aiming at the situation that the fracturing wells are lack in the study of injector-producer spacing and waterflooding response and based on the theory of pressure wave ellipse face spread,the relationship of waterflooding response time and elliptic move boundary,start-up pressure gradient,oil well productivity and oil viscosity is deduced.Furthermore,the influence factors of waterflooding response time are researched.Results show that the above factors have great influences on waterflooding response time.Sensitivity for fracturing wells is far less than that for no-fracturing wells.Especially when the oil viscosity of target reservoir is high,the difference is more obvious.Choice of reasonable injector-producer spacing is common action result of prime and secondary contradiction,so the choice should be optimized in the large system development.
引文
[1]李云鹃,胡永乐.低渗透砂岩油藏注水见效时间与井距关系[J].石油勘探与开发,1999,26(3):84-86.
[2]朱圣举.低渗透油藏的压力波传播规律[J].新疆石油地质,2007,28(1):85-87.
[3]赵宇新,杨永平,石玉峰.提高深层低渗油气藏压裂效果的方法[J].断块油气田,2003,10(4):69-71.
[4]王熙华.利用启动压力梯度计算低渗油藏最大注采井距[J].断块油气田,2003,10(6):75-76.
[5]Prats M.Effect of vertical fractures on reservoir behavior-incompressiblefluids case[J].SPEJ,1962,2(2):87-94.
[6]Kucuk F.Unsteady-state water influx in elliptical and anisotropicreservoir/aquifer system[J].SPEJ,1962,21(3):309-314.
[7]刘慈群.垂直裂缝地层中流体的渗流[J].石油勘探与开发,1987,14(3):69-73.
[8]陆辉,谢丽,乐涛涛.浅论气水在低渗砂岩中的相对渗透率方程[J].断块油气田,2008,15(4):71-72.
[9]霍斐斐,王海军,翁旭,等.转向重复压裂技术在陕北低渗透油田的应用[J].石油地质与工程,2011,25(4):95-97.
[10]罗志锋,黄炳光,王怒涛.一种计算低渗透油藏相对渗透率曲线方法[J].断块油气田,2007,14(1):47-49.
[11]何茂秀,高保国,王玲,等.压裂技术在渤南油田低渗透储层改造中的应用[J].石油地质与工程,2010,24(6):98-100,103.
[12]谢远伟,李军亮,廖锐全.压裂井裂缝参数优化研究[J].断块油气田,2010,17(6):762-764.
[2]朱圣举.低渗透油藏的压力波传播规律[J].新疆石油地质,2007,28(1):85-87.
[3]赵宇新,杨永平,石玉峰.提高深层低渗油气藏压裂效果的方法[J].断块油气田,2003,10(4):69-71.
[4]王熙华.利用启动压力梯度计算低渗油藏最大注采井距[J].断块油气田,2003,10(6):75-76.
[5]Prats M.Effect of vertical fractures on reservoir behavior-incompressiblefluids case[J].SPEJ,1962,2(2):87-94.
[6]Kucuk F.Unsteady-state water influx in elliptical and anisotropicreservoir/aquifer system[J].SPEJ,1962,21(3):309-314.
[7]刘慈群.垂直裂缝地层中流体的渗流[J].石油勘探与开发,1987,14(3):69-73.
[8]陆辉,谢丽,乐涛涛.浅论气水在低渗砂岩中的相对渗透率方程[J].断块油气田,2008,15(4):71-72.
[9]霍斐斐,王海军,翁旭,等.转向重复压裂技术在陕北低渗透油田的应用[J].石油地质与工程,2011,25(4):95-97.
[10]罗志锋,黄炳光,王怒涛.一种计算低渗透油藏相对渗透率曲线方法[J].断块油气田,2007,14(1):47-49.
[11]何茂秀,高保国,王玲,等.压裂技术在渤南油田低渗透储层改造中的应用[J].石油地质与工程,2010,24(6):98-100,103.
[12]谢远伟,李军亮,廖锐全.压裂井裂缝参数优化研究[J].断块油气田,2010,17(6):762-764.