【7A文】Shale gas (oil) Reservoirs factors(页岩油气藏的影响因素）.ppt

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1、加拿大里贾纳大学地质系卿海若May22,2012Shalegas(oil)Reservoirs:factorsthatinfluencereservoir’squalitywithrespecttogas/oilinplaceanddeliverabilityContentUnconventionaloilandgasShalereservoirs:heterogeneousFactorsthatinfluencegasinplaceandporesystemsFactorsthatinfluencedeliverability(fr

2、acturesandporesystem)GeneralapplicationstoWCSBContinuous-typegas&oilaccumulationsResourceplayIntegratedcross-plotofpermeabilityvs.porosityshowingflowunitsforconventional,tightgas,andshalegasreservoirsbasedonrp35porethroatvalues.F=Fayettville,HR=HornRiver,B=Barnett.Viscou

3、sflowisdominantinconventionalandtightgasreservoirsdowntomicroportsize.Diffusion-basedflowdominatesatthenanoportscale,typicalofshalereservoirs.ContentUnconventionaloilandgasShalereservoirs:geologicalsettingandheterogeneousFactorsthatinfluencegasinplaceandporesystemsFactor

4、sthatinfluencedeliverability(fracturesandporesystem)GeneralapplicationstoWCSBShaleplaycomparison(sourceoftheabovenumbersprovidedbyU.S.DepartmentofEnergy,2009).FactorsthatinfluenceshalereservoirsContentUnconventionaloilandgasShalereservoirs:heterogeneousFactorsthatinfluen

5、cegasinplaceandporesystemsFactorsthatinfluencedeliverability(fracturesandporesystem)GeneralapplicationstoWCSBOccurrenceofgasinshalesSizeoftheShaleResource:(OriginalGas-in-Place)PorosityPoresizeLithologyTOCThermalmaturityoftherockReservoirTandPSEMbackscatterimageshowingth

6、epresenceofporeswithinOrganicmatter,withlikelyformedasaresultofhydrocarbongeneration(ImageprovidedbyR.ReedtoRuppelandlouck,2008)SAXS：Small-angleX-rayscattering(X射线散射电镜）SAXS：Small-angleX-rayscattering(X射线散射电镜）LowPisotherm-低压等温吸附分析:描述了在恒温下，可吸附在表面的气体体积与压力的函数关系。描述了一个地层能够储存多少

7、气体以及该气体释放得多快BJH是一种计算方法，通过N2的吸脱附实验，得到孔体积数据，再利用BJH来计算样品孔的分布情况，得到孔径与孔体积的相对关系。SizeoftheShaleResource:(OriginalGas-in-Place)PorosityPoresizeLithologyTOCandtypeofOMThermalmaturityoftherockReservoirTandPSizeoftheShaleResource:(OriginalGas-in-Place)PorosityPoresizeLithologyTOCTh

8、ermalmaturityoftherockReservoirTandPSizeoftheShaleResource:(OriginalGas-in-Place)PorosityPoresizeLithol