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《【7A文】Shale Well Production and Hydraulic Fracturing(页岩气田和非常规气田生产和水力压裂).pptx》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、ShaleWellProductionand HydraulicFracturing页岩气田和非常规气田生产和水力压裂HydraulicFracturingProductionMechanism水力压裂生产机理5VerticalWell,FullyPenetratingVerticalFracture:Performancewp2xfh2Vfp6垂直井,完全贯穿裂缝的性质wp2xfh2Vfp7DimensionlessFractureConductivityDimensionlessfractureconductivity2xfwfractureconductivitynon
2、ame8无量纲裂缝导流能力无量纲裂缝导流能力2xfw裂缝导流能力没有名字9TheJDofaHydraulicallyFracturedWellFromCinco-LeyandSamaniegoandsimplere-arrangement10水力压裂井的JD经Cinco-Ley和Samaniego重新组合11432100.11000sf+In(xf/rw),sf+In(xf/rw)+0.5In(CfD)CfDsf+In(xf/rw)sf+In(xf/rw)+0.5In(CfD)CfD,opt110100OptimumConductivitytoMaximizePI124321
3、00.11000sf+In(xf/rw),sf+In(xf/rw)+0.5In(CfD)CfDsf+In(xf/rw)sf+In(xf/rw)+0.5In(CfD)CfD,opt110100优化导流能力来最大化PI13PenetrationRatio ProppantNumber2xfye=xexe14穿透率和支撑剂数2xfye=xexe15JDvsCfD(moderateNprop)16JD和CfD的关系(中等大小Nprop)17JDvsCfD(largeNprop)18JD和CfD的关系(大Nprop)19MaximumAchievablePI20可取得的最大PI21Op
4、timalLengthandWidth2Vfp=2hwpxf2Vfp=2hwpxf22最优裂缝长度和宽度2Vfp=2hwpxf2Vfp=2hwpxf23TightGasandFrac&Pack: theExtremesTightGask<<1md(hardrock)Highpermeabilityk>>1md(softformation)24一个极端情况：致密气田的压裂致密气田k<<1md(硬岩石)高渗透率k>>1md(软岩层)ExampleCalculationsLetMp=100tons,kf=200,000md,h=15mandhf=30mIfk=1md:xf=300m
5、,w=0.3cmIfk=0.01md:xf=570m,w=0.16cm(ShaleGas…SlickWater)Ifk=100md:xf=33m,w=2.7cm(TSO)例子给出Mp=100tons,kf=200,000md,h=15mandhf=30m如k=1md:xf=300m,w=0.3cm如k=0.01md:xf=570m,w=0.16cm(页岩气…滑性水)如k=100md:xf=33m,w=2.7cm(TSO)TransverseVerticalFractures-HorizontalWellsH,maxHydraulicFracturesH,maxDxfsH,mi
6、nWelldrilledalongtheminimumhorizontalstresses.Fieldtechniqueshavebeenreportedtoeffectivelygeneratemultipletransversefractures.Almostallreportedcasesintheliteraturearetransversefractures水平井的横向垂直裂缝sH,maxHydraulicFracturesH,maxDxfsH,min沿着最小水平应力方向钻井。应采取实际技术，来有效地生成多条横向裂缝。大部分压裂设计都采用了横向裂缝Hydraulic
7、FracturingFracturingGasWells水力压裂气田压裂31FracturingHigh-RateGasWellsNon-DarcyflowreducesfractureflowcapacitysubstantiallyHowever,fracturingisamajorwaytoreducenon-Darcyeffectsinanunfracturedwellsandprovidewellstimulation(Ref.Economidesetal.WorldOil,Oct.,2002
