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1、低渗透油藏垂直裂缝井试井评价研究崔丽萍:何顺利:王金成;武洪雨'(1.中国石油大学石油工程教育部重点实验室,北京2.中国石油长庆油田公司勘探开发研究院,西安3.中国石油大庆油田井下作业分公司,大庆)摘要:低渗透油藏渗流环境比较差,采用压裂才能获得好的经济效益。作为评价压裂效果的重要手段,压裂井的试井分析显得尤为重要。但H前对低渗透汕藏垂I[裂缝井的常规试井解释方法存在拟合速度慢,精度不高等缺点,本文首先应用解析试井技术对压裂井进行分析,在解释结果基础上,利用数值试井和试井设计方法验证,可以更加准确的对低渗透油藏垂直裂缝井进行试井评价,得到井
2、的裂缝长度、裂缝导流能力、表皮系数等影响压裂效果的参数。实例结果表明,该方法解释结果准确可靠,可以很好的对低渗透油田压后效果进行评价。关键词:低渗透油藏;圧裂效果;试井;评价WellTestingEvaluationofVerticalFractureinLowPermeabilityReservoirCuiLi-ping1,HeShun-li1,WangJin-cheng2,WuHong-yu3(1.MOEKeyLaboratoryforPetroleumEngineeringinChinaUniversityofPetroleum,Be
3、ijing;2.ResearchInstitutcofExploration&DevelopmentofChangqingOilfieldCompany,PetroChina,Xi-an3.DownholeOperationBranchofDaqingOilfield,PetroChina,Daqing)Abstract:Inlowpermeabilityreservoirs,flowenvironmentisverypoor;inordertoachievegoodeconomicreturnsthewellsarealwaysfract
4、ured.Asanimportantmeansofevaluatingfracturingeffect,welltestinganalysisisverynecessaryforfracturingwells・Butfittingprecisionofpresentwelltestinginterpretationmethodsforverticalfracturingwellsisnothigh.Thispaperusinganalyticalwelltestingtechnologyinterpretatfirstandthenusen
5、umericalwelltestingandwelltestingdesignmethodtoverifyinterpretationresults.Thismethodisfastandaccurate.Fracturelength,fractureconductivity,skinfactoretccanbeobtained.Anexampleisgiventoshowthatthismethod'sresultsareaccurate,canbewellusedto作者简介:崔丽萍(1982-)女,山东淄博人,博士生;现从事油气田开发
6、工作。evaluatethefracturingwells・Keywords:lowpermeabilityreservoir;fracturingeffect;welltesting;0IntroductionHydraulicfracturingisaverypopularandaneffectivetreatmentinlowpermeabilityreservoi匚Asanimportantmethodtoevaluatefracturingeffect,welltestinganalysisforverticalfracturew
7、ellsismorenecessary・Usingwelltestingdatacanobtainsomerelateddynamicparametersaboutfracturewellsandreservoir,itcanprovidereliablebasistoanalyzepressurebehavioroffracturewellsandevaluatefractureeffectmorescientificallyandreasonably.Atpresent,therearemanyresearchachievementsa
8、boutwelltestinganalysisofverticalfracturewell.Themodelsinclude:Cincoetal.representedTwo-l