资源描述:
《煤层气连通井导向钻井钻头定位方法》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第38卷第2期石油钻采工艺Vol.38No.22016年3月OILDRILLING&PRODUCTIONTECHNOLOGYMar.2016文章编号:1000–7393(2016)02–0151–05DOI:10.13639/j.odpt.2016.02.004煤层气连通井导向钻井钻头定位方法1,2211曹向峰 管志川 王智锋 孙峰1.胜利石油工程有限公司钻井工艺研究院;2.中国石油大学(华东)石油工程学院引用格式:曹向峰,管志川,王智锋,孙峰.煤层气连通井导向钻井钻头定位方法[J].石油钻采工艺,2016,38(2):151-155
2、.摘要:基于低频交变磁场的特性,构建了近钻头磁源的低频交变磁场数学模型。根据随钻测量仪器(MWD)的测量原理,建立测量坐标系,并推导出磁源坐标系向测量坐标系转换的解算方法,从而形成了测量坐标系下的钻头定位方法。在此基础上设计并制作了精确连通导向仪器和工具,配套了磁导向连通井的钻井工艺,并进行了现场应用,结果表明:在常规导向钻具组合基础上增加近钻头磁短节形成磁导向钻具组合,利用参数优化和轨迹实时测量和轨迹姿态控制,在730m水平段实现了连接误差小于1m,使水平井和直井精确连通,为煤层气的开发提供了技术支撑。关键词:煤层气;连通井;水平井
3、;磁性导向;导向定位;随钻测量中图分类号:TE21 文献标识码:ADrillbitpositioningmethodbasedonconnectedwellguidanceforcoalbedmethane1,2211CAOXiangfeng,GUANZhichuan,WANGZhifeng,SUNFeng1.DrillingTechnologyResearchInstitute,ShengliPetroleumEngineeringCo.Ltd.,Dongying,Shandong257017,China;2.Petroleum
4、EngineeringCollege,ChinaUniversityofPetroleum(EastChina),Qingdao,Shandong266580,ChinaCitation:CAOXiangfeng,GUANZhichuan,WANGZhifeng,SUNFeng.Drillbitpositioningmethodbasedonconnectedwellguidanceforcoalbedmethane[J].OilDrilling&ProductionTechnology,2016,38(2):151-155.Abst
5、ract:Onthebasisofthefeaturesoflow-frequencyalternatingmagneticfield,themathematicalmodeloflow-frequencyalternatingmagneticfieldnearthemagneticsourceindrillbithasbeensetup.Accordingtothemeasurementprincipleofmeasurement-while-drilling(MWD)tool,themeasurementcoordinatesys
6、temhasbeensetup,andthemethodforconversionfrommagneticsourcecoordinatesystemtomeasurementcoordinatesystemhasbeenderived,soastoformthedrillbitpositioningmethodundermeasurementcoordinatesystem.Onthisbasis,theaccurateconnectionguidinginstrumentsandtoolshavebeendesignedandma
7、de,thedrillingprocessformagneticguidingconnectedwellhasbeendeveloped,andthefieldapplicationhasbeencarriedout.Theresultsindicatethat:byaddingthenear-drill-bitmagnetictooltoconventionalcombinationofdrillingtools,optimizingtheparameters,carryingoutreal-timemeasurementoftra
8、jectoryandcontrollingthetrajectoryposture,theconnectionerrorlessthan1mhasbeenachievedinthe730mhorizontalsectio