變形三重介質(zhì)低滲透油藏垂直裂縫井的非線性流動分析.pdf

1、中國石油大學（華東）碩士學位論文變形三重介質(zhì)低滲透油藏垂直裂縫井的非線性流動分析姓名：劉文超申請學位級別：碩士專業(yè)：數(shù)學指導教師：同登科20100501Thenon—linearflowanalysisoffiniteconductivityverticallyfracturedwellsinthelowpermeabilityreservoirwithdeformedtripleporositymediumLiuWenchao(Mat

2、hematics)DirectedbyProfTongDengkeAbstractThenaturalproductivityinthelowpermeabilityreservoirislowandthereservoirfrequentlyneedstobereformedthroughsomestimulationtreatmentsOneofthemostpopularmethodsisthehydraulicfracturin

3、gtreatmentFracturingCanformaverticalfracturewithhighconductivityinthelowpermeabilityreservoirwhichexpandsseepageareaofoilandSOincreasestheproductivityofoilwellsHoweverthesuccessofthewellstimulationisnotguaranteedWeneedte

4、lyonthewelltestingmethodtoestimatereservoirparametersandpredictreservoirperformanceafterthetreatmentinordertoevaluatetheefficiencyofthefracturingtreatmentThekeytothewelltestingjobisbuildinganeffectivewelltestinginterpret

5、ationmodelwhichcouldfullyreflectthecharacteristicsofthefluidflowinthereservoirFractures—vugscarbonatelowpermeabilityreservoirshaveaverywidedistributioninChinabutsomeoilwellsinitiallyhavenoproductivityunlessimplementingaf

6、racturingprocessHence，thestudyonverticallyfracturedwellsinthelowpermeabilityreservoir、杭thdeformedtripleporositymediumisverypracticalInconsiderationofboththeflowcharacteristicsthatthereexistedastartuppressuregradientinthe

7、lowpermeabilityreservoirandthedeformationofthemediuminthestresssensitiveformation，thefluidflowintheverticalfracturesandformationwasdividedintotwegionsthelinearflowregionintheverticalfracturesandthenon—linearflowregionint

8、helowpermeabilityreservoirwithdeformedtripleporositymediumfollowingCinco—LeyH’SbilinearflowtheoryoffiniteconductivityverticallyfracturedwellsAsaresultthenon—linearflowmodeloffiniteconductivityverticallyfracturedwellsinth

9、elowpermeabilityreservoirwithdeformedtripleporositymediumWasconstructedDuetothenonlinearityofthemodel，stablefinitedifferenceschemeswereadoptedtogetitsnumericalvaluesTypicalwesttestcurveswereplottedbyusingthesenumericalre