【7A文】Advances in Well CompletionStimulation for Shale Gas Reservoirs（页岩气藏的完井增产技术进展）.pptx

《【7A文】Advances in Well CompletionStimulation for Shale Gas Reservoirs（页岩气藏的完井增产技术进展）.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、AdvancesinWellCompletion/StimulationforShaleGasReservoirs•Introduction•ShaleGasReservoirs-AdvancesinCompletions•ShaleGasReservoirs–AdvancesinStimulation•AdaptationsandInnovations:Tools,Fluids,Proppants•CaseHistories•PotentialsandOpportunitiesinChina•Challenges:PuttingitTogether•SummaryOutlineQuad

2、rillionBTUGlobalEnergyPicture–EnergyUsebyFuelType(1990–2035)250200150199020002007201520252035YearProjectionsHistoryLiquidsCoalEIA,InternationalEnergyOutlook2010Naturalgas100Renewables50Nuclear0GlobalDistributionofUnconventionalGasResourcesNPCGlobalOilandGasStudy2007Percentofworldtotal252015105030

3、199019952000200720152020202520302035ChinaIndiaProjectionsHistoryUnitedStatesYearEIA,InternationalEnergyOutlook2010EnergyConsumptionandProjection(U.S.,ChinaandIndia)2009UnconventionalGasProductionTrendsintheU.S.Source:Kuuskraaetal.,2007OverviewofTightGasReservoirs•Tightgasreservoirsaregasbearingfo

4、rmationswithpermeabilitylessthan0.1mD.Theycanbesandstoneorcarbonate.•Thenatureoftightgasreservoirsisdictatedbydepositionalandpost-depositionalconditions.•Examplesinclude:CottonValleySandinEastTexas,ClevelandformationinNorthEastTexas,JonahFieldinWyoming,GraniteWashformationinNorthernTexas,andXujia

5、heformationinChinaTightGas/ShaleReservoirsResourceIdentificationEvaluationandAppraisalDevelopment/Stimulation•Theobjectiveindevelopingshalegasreservoirsistomaximizereservoirvolumecontacttothewellaseconomicallyaspossible.•Requirestheidentificationof“sweetspots”.Thepresenceofsweetspotsdependson(Rus

6、hingetal.,2008)–Depositionalgeology–Diageneticeffects–Hydrodynamicproperties–TectonicactivityDevelopmentofShaleGasReservoirsDevelopmentofShaleGasReservoirs•Developmentalstrategieshaveevolvedovertheyears(TOTAL,E&P2007)–Verticalwellswithmultiplefractures–Horizontalwellswithmultistagefracturing–Mult

7、ilaterals–Multiplefracturesinmultilateralcompletions•Horizontalwellswithmultistagefracturingareprimarilyusedtoexploitshalegasreservoirs•Twomaincompletiontypesfavorultimatehigherrecovery–Cementedlinermultistagefracturin