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1、2010年4月大慶石油地質(zhì)與開發(fā)Apr.,20l0第29卷第2期PetroleumGeologyandOilfieldDevelopmentinDaqingV01.29Nn2DOI:10.3969/J.ISSN.1000—3754.2010.02.019低滲透油藏水力壓裂優(yōu)化設(shè)計方法姜漢橋王長江郭虎閆鐵張建國(1.中國石油大學(xué)石油天然氣工程學(xué)院,北京102249;2.西安石油大學(xué)石油工程學(xué)院,陜西西安710065;3.大慶石油學(xué)院,黑龍江大慶163318;4.長慶油田勘探開發(fā)研究院,陜西西安710021
2、)摘要:低滲透油藏是目前乃至未來很長一段時間里勘探開發(fā)的重點領(lǐng)域,水力壓裂是開發(fā)低滲透油藏的有效方法之一,壓裂優(yōu)化設(shè)計方法對壓后效果有著極其重要的影響。通過分析低滲透油藏特點和開發(fā)中存在的特殊性,制定了低滲透油藏水力壓裂優(yōu)化設(shè)計應(yīng)遵循的基本原則,對滲透率等9個影響低滲透油藏水力壓裂壓后產(chǎn)量的因素進(jìn)行敏感性分析,得到各因素影響壓后產(chǎn)量的敏感性程度。以國內(nèi)某低滲透油藏c·A井為例,通過油藏特性分析,結(jié)合產(chǎn)量影響因素敏感性分析結(jié)果,設(shè)計診斷注入測試、低排量支撐劑段塞替擠天然裂縫、短的射孔間隔、壓裂液和支撐劑優(yōu)
3、選、井下微地震裂縫監(jiān)測,研究制定適合該低滲透油藏的水力壓裂優(yōu)化設(shè)計。壓裂裂縫監(jiān)測和壓后產(chǎn)量對比表明,壓裂設(shè)計合理且具有針對性,對低滲透油藏水力壓裂設(shè)計的制定具有一定的借鑒意義。關(guān)鍵詞:低滲透油藏;水力壓裂優(yōu)化設(shè)計;敏感性分析;診斷注入測試;裂縫監(jiān)測中圖分類號:TE357.1文獻(xiàn)標(biāo)識碼:A文章編號:1000.3754(2010)02一D092_()5STUDYoNHYDRAULICFRACTURINGDESIGNOPTIMIZATIoNFoRLoW.PEIEABILITYRESERVoIRJIANGHan
4、.qiao,WANGChang-jiang,GUOHu,YANTie,ZHANGJian.guo(1.CollegeofPetroleumEngineering,ChinaUniversityofPetroleum,Beng102249,China;2.PetroleumEngineeringCollege,Xi’anPetroleum,University,Xi’an710065,China;3.DaqingPetroleumInstitute,Daqing163318,China;4.Explora
5、tionandDevelopmentResearchInstitu.teofChangqingOilfield,Xi’an710021,China)Abstract:Low-permeabilityoilreservoirsturntobethesignificantdomainforpetroleumexplorationanddevelop—mentatpresentandinthefuture.Hydraulicfracturingisoneoftheeffectivewaystodevelopt
6、hem.Particularlyproductionafterfracturingiscloselyrelatedtothedesignoptimizationmethods.Byanalyzingthecharacteristicsoflowpermeabilityreservoirsandthespecialtyinthedevelopment,thebasicprinciplesforhydraulicfracturingdesignoptimizationforthiskindofoilrese
7、rvoirarepresentedandthenthesensitivityanalysisoftheninefactorsinfluen—cingpost—fracproductionsuchaspermeabilityetc.a(chǎn)recarriedout.Intheend,theabovesensitivitydegreesfordifferentfactorsareobtained.TakingWellC—Ainacertaindomesticlow—permeabilityreservoirfor
8、example,bymeansofthecharacteristicsanalysisofthereservoirandintegratingthesensitivityanalysisresultsofproductionin—fluencingfactors,thediagnosticinjectiontest,lowrateproppantslug,shortperforationinterval,fluidandprop一收稿日期: