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1、中國(guó)石油大學(xué)碩士研究生學(xué)位論文華東(申請(qǐng)工學(xué)碩士學(xué)位)七個(gè)泉油田壓裂選井選層技術(shù)研究學(xué)科專業(yè):油氣田開發(fā)工程培養(yǎng)方向:采油工程理論與技術(shù)碩士生:趙衛(wèi)蕊指導(dǎo)教師:王杰祥(教授)入學(xué)日期:2005年9月論文完成日期:2007年4月七個(gè)泉油田壓裂選井選層技術(shù)研究趙衛(wèi)蕊(油氣田開發(fā)工程)指導(dǎo)教師:王杰祥(教授)摘要選取最有利的油氣儲(chǔ)層和油氣井是降低壓裂措施風(fēng)險(xiǎn)、提高措施經(jīng)濟(jì)效益的主要途徑之一.目前,在現(xiàn)場(chǎng)常依靠經(jīng)驗(yàn)來(lái)確定壓裂候選井層,存在一定的主觀盲目性。本文在文獻(xiàn)調(diào)研的基礎(chǔ)上,研究了國(guó)內(nèi)外壓裂選井選層的理論和方法,包括模糊識(shí)別法、模糊綜合評(píng)判法、
2、人工神經(jīng)網(wǎng)絡(luò)技術(shù)、模糊神經(jīng)網(wǎng)絡(luò)系統(tǒng)、經(jīng)濟(jì)下限法等,并針對(duì)各方法模型編制了相應(yīng)的應(yīng)用程序;利用統(tǒng)計(jì)分析的方法,開展了七個(gè)泉油田油層參數(shù)與壓裂增產(chǎn)效果間的關(guān)系研究,進(jìn)行了參數(shù)敏感性分析,探討了參數(shù)權(quán)重確定的問題;結(jié)合七個(gè)泉油田低孔低滲、油層埋藏深、儲(chǔ)層多而薄等特點(diǎn),以及已實(shí)施的壓裂增產(chǎn)措施,分別應(yīng)用模糊識(shí)別法、模糊綜合評(píng)判法、人工神經(jīng)網(wǎng)絡(luò)技術(shù)三種壓裂選井選層方法優(yōu)選壓裂井層,通過應(yīng)用效果分析和方法對(duì)比,最終提出適合七個(gè)泉油田壓裂井層優(yōu)選的方法。實(shí)例證明用該方法優(yōu)選出的井層,經(jīng)壓裂后增產(chǎn)效果明顯。壓裂井層優(yōu)選方法實(shí)現(xiàn)了選井選層問題的定量化,為七個(gè)
3、泉低滲油田高效開發(fā)奠定了基礎(chǔ)。關(guān)鍵詞:壓裂,選井選層,模糊評(píng)判,神經(jīng)網(wǎng)絡(luò)ResearchonSelectionofWbllandLayerforFracturinginQigequanOilfieldZHAOWei-rui(Oil&GasFieldDevelopmentEngineering,2005)DirectedbyProfessorWANGJie-xiangAbstractSelectingthefavorablewellandlayerforfiaeturingisachiefwaytoreducetheriskandincrea
4、seeconomicprofit.Nowexperienceisoftenusedinselectingtheoptimisticwellandlayerforfracturing,butitcannotavoidtheblindnessandsubjectivity.Inthispaper,atthebaseofliteratureinvestigationandstudy,sometheoriesandmethodsofselectingwellsandlayersathomeandbroadarcstudied,includingfu
5、zzymethod,artificialnervenetworkmethod,fuzzyneuralnetworksystem,economiclowerlimitandSOon,andapplicationprocedureisestablishedforthesemethods.Bystatisticsandanalysis,theinfluenceofreservoirparametersonfracturingresponseisresearched,thesensitivityoftheseparametersisanalyzed
6、·andweightdeterminationofeveryparameterisdiscussed.InviewofeasesoffracturingtreatmentinQigequanoilfieldwithlowporosity,lowpermeabilityandthinmulti-layers,threemethodsincludingfuzzyrecognitiontheory,comprehensiveidentificationfuzzytheoryandartificialngrvenetworkareusedtosel
7、ectwellandlayerforfracturing,andtheapplicationresultandcharacteristicsofthemarecompared.Atlast,amethodthatispropertoQigequanoilfieldisproposed.Andpracticeoftreatmentindicatesthatwellsandlayersselectedbythismethodhavelargelyincreasediiiproduction.Thesettingupofmethodsrealiz
8、edthequantitativeoptimizationofwellandlayerforfracturing,andlaysthefoundationforhighlyeff