考虑裂缝非达西渗流时气井压裂优化设计方法研究
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摘要
气井压裂产生的垂直裂缝中存在非达西渗流,渗流阻力显著增大,产能明显降低。在建立考虑了非达西渗流的裂缝有效渗透率计算模型基础上,建立了气井产能计算新模型,改进了基于支撑剂数的压裂气井优化设计方法。计算表明,裂缝中存在非达西渗流时,裂缝有效渗透率大幅度减小,设计所得最优缝长明显缩短,缝宽明显增加,压裂气井产能显著降低。气井压裂设计时,以考虑非达西渗流的气井产能为基础,可以更准确的得到最优压裂设计参数,从而更好地指导现场压裂施工。
引文
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[6]GEERTSMA.Estimating the coefficient of inertial resistance in fluid flow through porous media[J].Society of Petroleum Engineering Journal,1974,14(5):445–450.
[7]田建峰,曹成寿,刘建英,等.苏里格气田泡沫排水采气工艺技术难点与对策[J].钻采工艺,2016,39(3):21–24.
[8]RICHARDSON M.A new and practical method for fracture design and optimization[C].SPE 59736,SPE/CERI Gas Technology Symposium,Canada,2000:118–125.
[9]张秦汶,辛军,李勇明,等.苏里格气田水平井压裂裂缝参数优化[J].石油地质与工程,2014,2(82):35–38.
[10]ECONOMIDES M J,OLIGNEY R E,VALKO P.Applying unified fracture design to natural gas wells[J].World Oil,2002,223(10):50–50.
[2]HOLDITCH S A,MORSE R A.The Effects of Non–darcy flow on the behavior of hydraulically fractured gas wells[J].Society of Petroleum Engineers,1976,28(10):1169–1179.
[3]刘松青.永和气田压裂优化技术研究与应用[J].石油地质与工程,2013,27(1):85–87
[4]付豪,税丰收.低渗油田开发中水平井分段压裂技术的运用[J].云南化工,2017,44(12):63–64
[5]HOANG L T,KIEU T T,PHAB T V.Properties of generalized forchheimer flows in porous media[J].Journal of Mathematical Sciences,2014,2(202):259–332.
[6]GEERTSMA.Estimating the coefficient of inertial resistance in fluid flow through porous media[J].Society of Petroleum Engineering Journal,1974,14(5):445–450.
[7]田建峰,曹成寿,刘建英,等.苏里格气田泡沫排水采气工艺技术难点与对策[J].钻采工艺,2016,39(3):21–24.
[8]RICHARDSON M.A new and practical method for fracture design and optimization[C].SPE 59736,SPE/CERI Gas Technology Symposium,Canada,2000:118–125.
[9]张秦汶,辛军,李勇明,等.苏里格气田水平井压裂裂缝参数优化[J].石油地质与工程,2014,2(82):35–38.
[10]ECONOMIDES M J,OLIGNEY R E,VALKO P.Applying unified fracture design to natural gas wells[J].World Oil,2002,223(10):50–50.