特低滲儲層非達(dá)西滲流規(guī)律研究.pdf

1、西安石油大學(xué)碩士學(xué)位論文特低滲儲層非達(dá)西滲流規(guī)律研究姓名：齊銀申請學(xué)位級別：碩士專業(yè)：油氣田開發(fā)工程指導(dǎo)教師：張寧生任曉娟20060515英文摘要Subject：ASudyonPercolationCharateritcsofEtralowPermeabilit)rReserviorSpeciality：Oil＆GasExplorationEngineeringName：QiYin(signature)f魚!!i竺Instructor：

2、ZhangNingsheng，RenXiaojuan(Signature)壯∞fI一4ABS’I’RAC’I’ChangqingoilfieldislocatedinOrdosbasinthemainoilreservesforexplorationbelongtolowpermeabilityorexffa—lowpermeabilityreservoirsDuetotheparticularityoflowpermcabilityr

3、eservoir，theclassicalDarcylawcarl’tdescribethepercolationruleaccuratelyOneofthekeystodeveloptheoilfieldeconomicallyistoknowthepercolationruleThemanyexperimentalworksweredoneinthedissertationforpercolationcharacteristicso

4、fextralowpermeabilityreservoircoresgottenfromtheChang6layersinYHandNZblocksofChangqingoilfield，theresultsshowthatthenon—Darcyfeaturesexistwhenthefluidsseepinextralowpermeabilityreservoiratlowvelocity，asforthestudiedblock

5、s，thesinglewaterpercolationvelocityislessthan00815m／dwhenthenonlinearcharacteristicsOccurintWoblocks，andthesingleoilpercolationvelocityislessthanO117m／dforYHblockand0136m／dforNZblockThroughthesufficientanalysisforexperim

6、entaldata，thedissertationputsforwardanewequation，whichCanbeusedtodescribetheruleofthefluidspercolatethroughtheextralowpermeabilityreservoiratlowvelocity，alsotheminimumstartingpressuregradientscarlbecalculatedbyitTheavera

7、geminimumstartingpressuregradientsare000517MPa／cmandO0149MPa／cmforsinglephasewategandO00891MPa／cmand0，0247MPa／cmforsinglephaseoilinChang6layersinYHandNZblocksItisconsecutivefunctionbetweenthefluxandthepressuregradientint

8、henewequation，whichenrichestheaveragemathematicalfunctionsofnonlinearflowingMeanwhile，themechanismandthefactorsforinfluencingthepercolationroleswereanalyzedinthisdissertationTheresultsshowthattheprimaryfactorsarethebadro

9、ckproperties，thescrappyseepagechannels，insufficientdrivepressure，therockdistortionbypressandwettabilityandSOonFinally，takeYHblockasanexample，thepressuredistributionandproductionvariationarecomparedinthreepercolationmodel