Adynamicmodelofthepressurizedliquidcolumnmovement

inthehighenergygasfracturingprocess

WU Fei-peng; PU Chun-sheng; WU Bo

doi:10.11883/1001-1455(2010)06-0633-08

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WU Fei-peng, PU Chun-sheng, WU Bo. Adynamicmodelofthepressurizedliquidcolumnmovementinthehighenergygasfracturingprocess[J]. Explosion And Shock Waves, 2010, 30(6): 633-640. doi: 10.11883/1001-1455(2010)06-0633-08

Citation:

WU Fei-peng, PU Chun-sheng, WU Bo. Adynamicmodelofthepressurizedliquidcolumnmovement inthehighenergygasfracturingprocess[J]. Explosion And Shock Waves, 2010, 30(6): 633-640. doi: 10.11883/1001-1455(2010)06-0633-08

Citation:

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Adynamicmodelofthepressurizedliquidcolumnmovement inthehighenergygasfracturingprocess

doi: 10.11883/1001-1455(2010)06-0633-08

1.
CollegeofPetroleum EngineeringinChinaUniversityofPetroleum ,

Funds:

NationalNaturalScienceFoundationofChina(50774091)

KeyTechnologyRDProgram(2005BA901A13)

More Information

Corresponding author: WU Fei-peng
Publish Date: 2010-11-25

Abstract

Abstract

Accordingtothekinematicalmechanismcomplexityoftheimpactedpressurizedliquidcolumninthehighenergygasfracturingprocess, weassumesthatthecompletelycontactedgasliquidinterfaceexits. ThenbyusingaLagrangeanalyticalmethodforstudyingarandomliquidacross-section, adynamicmodelofthepressurizedliquidcolumnmovementlawissetup,whichcomprisescontinuityequation, momentumconservativeequationandenergyconservativeequation.Basedonthe pressureandvolumeconservationduringtheprocessofpowderconflagrationandpressurizedliquid columnmovement,acouplingnumericalmethodfordescribingthegas-liquidinterfacemovementlaw isestablished.Examplecalculationsshowthatwhenconsideringthemacroscopicalpropelandimpact compressiononthepressurizedliquidcolumncausedbydeflagration,dynamicenergydistributionof theliquiddistributionandpipecolumnfrictionresistance,theinterfaceascendingheightislimited (lessthan0.1mintheexampleconditions).Thisillustratesthatpressurizedliquidcolumnhasagood functionofbackingpressure.Butinfact,inthefracturingprocess,theinterfacecanreachahigher position(18.9m),whichshowsthatinthelaterprocess,hydraulicoscillationproducesanobvious synergisticeffect.
- mechanicsofexplosion,
- dynamicmodel,
- highenergygasfracturingprocess,
- pressurized liquidcolumnmovement,
- dynamicenergydistribution