刘瑾论文-超临界二氧化碳钻井技术的应用现状分析及前景展望

本科毕业设计（论文）题目：超临界二氧化碳钻井技术的应用现状分析及前景展望学生姓名：刘瑾学号：10021154专业班级：石油工程10-4班指导教师：杜玉昆2014年6月20日中国石油大学（华东）本科毕业设计(论文)超临界二氧化碳钻井技术的应用现状分析及前景展望摘要随着经济发展对能源需求量的增加，油气的对外依存度逐年增大，有着巨大资源量的非常规油气已经成为主要的接替能源，但是非常规油气藏在开发过程中极易受到损害。超临界二氧化碳流体具有低粘度、高密度等特点，同时有着良好的扩散和溶解性能，利用超临界二氧化碳在非常规油气藏中进行钻井作业，具有破岩门限压力低、钻进效率高的技术优势，并且能够有效保护非常规油气储层，是一种性能优良的钻井流体。针对超临界二氧化碳钻井技术的应用现状，本文描述了超临界二氧化碳的物理特性，介绍了相关实验装置、流程及实验结论，分析了超临界二氧化碳钻井技术的发展历程，总结了技术发展遇到的难题，并对超临界二氧化碳钻采一体化技术在非常规油气资源开发中的发展前景进行了展望。关键词：超临界；二氧化碳；钻井；非常规油气中国石油大学（华东）本科毕业设计(论文)ApplicationstatusanalysisanddevelopmentoutlookofsupercriticalcarbondioxidedrillingtechnologyAbstractWiththeincreasingdemandforenergyresultingfromtherapiddevelopmentofeconomy,theexternaldependenceofpetroleumhasincreasedyearbyyear.Unconventionalpetroleumandgasresourceswithabundantreserveshavebecomemajorreplacementenergy.However,unconventionalpetroleumresourcescouldbedamagedeasilyduringexploitationprocess.Tosolvethisproblem,supercriticalcarbondioxidefluidisintroducedforithasgoodattributesoflowviscosity,highdensityandgooddiffusinganddissolvingperformance.Duringtheprocessofdrillingwithsupercriticalcarbondioxideinunconventionalreservoirs,thereexistssometechnologyadvantagessuchaslowerrock-breakingthresholdpressureandhigherdrillingefficiency.Atthesametime,supercriticalcarbondioxidefluidcanprotectunconventionalreservoirseffectively.Therefore,thesupercriticalcarbondioxidewillbeadrillingfluidwithexcellentperformance.Inthisthesis,theapplicationstatusofsupercriticalcarbondioxidedrillingtechniquewasanalyzed,thephysicalpropertiesofsupercriticalcarbondioxidewaspresented,therelatedexperimentdevices,processandconclusionswereintroduced,andthedevelopmenthistoryofsupercriticalcarbondioxidedrillingtechniquewasanalyzed.Finally,thetechniqueproblemsweresummarizedandthedevelopmentprospectsofapplyingdrillingandproductionintegrationtechnologywithsupercriticalcarbondioxideintheexploitationofunconventionalresourceswerediscussed.Keywords：Supercritical;CarbonDioxide;Drilling;UnconventionalResources中国石油大学（华东）本科毕业设计(论文)目录第1章绪论............................................................................................................................11.1研究的背景和意义......................................................................................................11.2超临界二氧化碳的特性..............................................................................................21.2.1超临界流体的特点............................................................................................21.2.2超临界二氧化碳的特点....................................................................................41.3超临界二氧化碳钻采技术优势...................................................................................61.3.1超临界二氧化碳开发油藏的优势....................................................................61.3.2超临界二氧化碳钻井技术的优势....................................................................71.3.3超临界二氧化碳作为钻井流体的选定............................................................91.4论文的总体思路.........................................................................................................10第2章超临界二氧化碳钻井实验系统..............................................................................122.1超临界二氧化碳射流破岩实验................................................................................122.1.1超临界二氧化碳射流破岩基本原理..............................................................122.1.2超临界二氧化碳射流破岩实验装置及研究成果..........................................122.2超临界二氧化碳钻井液循环模拟装置和携岩特性实验........................................172.2.1超临界二氧化碳钻井液循环模拟实验装置..................................................172.2.2超临界二氧化碳携岩特性实验......................................................................192.3超临界二氧化碳流体特性传递实验.........................................................................21第3章超临界二氧化碳钻井技术......................................................................................333.1超临界二氧化碳连续油管技术................................................................................333.1.1连续油管技术及其发展历程..........................................................................333.1.2连续油管钻井的基本设备..............................................................................343.1.3连续油管钻井技术的优势及局限性..............................................................353.1.4利用超临界二氧化碳进行连续油管钻井......................................................363.2超临界二氧化碳欠平衡钻井技术............................................................................383.2.1欠平衡钻井及其发展历程..............................................................................383.2.2欠平衡钻井的基本设备..................................................................................41中国石油大学（华东）本科毕业设计(论文)3.2.3欠平衡钻井的优势及局限性..........................................................................423.2.4利用超临界二氧化碳进行欠平衡钻井..........................................................423.3超临界二氧化碳超短半径水平井和辐射水平井钻井技术....................................43第4章超临界二氧化碳钻井技术存在的问题与解决方法..............................................454.1超临界二氧化碳气源及现场输送............................................................................454.1.1超临界二氧化碳气源与管道输送技术发展现状.....