两趟两趟管柱管柱多层防砂作业（多层防砂作业（ DTMZ）介绍介绍 中海技服井下作业公司中海技服井下作业公司DTMZ简述简述管柱结构管柱结构及及主要工具主要工具作业程序作业程序作业指令作业指令DTMZ简述简述 一、优点1.一趟管柱座封所有封隔器，一趟管柱对所有层段进行防砂作业；2.节省射孔作业时间；3.减少操泵时间，减少准备工作；4.利用PACK OFF BUSHING 隔离环空，利用底部隔离密封封隔底层，从而大大减少流体漏失；5.管柱配长简单。二、缺点1.对大斜度、深井防砂完井作业风险系数较大（主要是蜜蜂件保护较难）；2.服务工具费用较高；3.连续作业时间较长，工作人员较疲劳。三、限制1.层间距最少为25英尺（7.62米）2.不能进行大型压裂充填作业。返回介绍返回介绍返回介绍返回介绍管管柱柱图图CN00646返回介绍返回介绍返回介绍返回介绍服务工具服务工具Multi-Position ToolMulti-Position ToolCN00646返回介绍返回介绍返回介绍返回介绍Setting Versa-Setting Versa-TrieveTrieve Packer PackerSetting Lugs Disengaged.Setting Lugs Disengaged.Setting Force Acting onSetting Force Acting onShear PinsShear PinsRun-In Lugs SupportingRun-In Lugs SupportingBottom Hole Assembly.Bottom Hole Assembly.No Loading of Shear PinsNo Loading of Shear PinsMPT GRAMPT GRAVELVELP PACK TACK TOOLOOLPISTPISTONONFIRST SHEAR PINSFIRST SHEAR PINSSETTING SLEEVESETTING SLEEVECOLLETCOLLETANTI-PRESETANTI-PRESETLUGSLUGSSECOND SHEARSECOND SHEARPINSPINSGUIDE TUBEGUIDE TUBEINTERNALINTERNAL SLIP SLIPELEMENTELEMENTP P ACKAGEACKAGEANTI-ROTANTI-ROTA A TIONTIONLUGLUGT T OPOP WEDGE WEDGESLIPSSLIPSBOTTBOTTOM WEDGEOM WEDGEANTI-ROTANTI-ROTA A TION LUGTION LUGFIRST SHEAR PINSFIRST SHEAR PINSSHEAREDSHEAREDSECOND SHEARSECOND SHEARPINS (LOADED)PINS (LOADED)CN00704返回介绍返回介绍返回介绍返回介绍非焊接旁通工具非焊接旁通工具Non-Welded CrossoverNon-Welded CrossoverCN03239返回介绍返回介绍返回介绍返回介绍压裂旁通工具压裂旁通工具FraqFraq Pack Crossover Pack CrossoverCN02791返回介绍返回介绍返回介绍返回介绍常规焊接旁通工具常规焊接旁通工具Conventional Crossover Conventional Crossover WeldmentWeldmentCN01582Slurry Exit PortsSlurry Exit PortsReturn FlowReturn Flow返回介绍返回介绍返回介绍返回介绍Self-Releasing Self-Releasing Positioning ToolPositioning ToolCN00702返回介绍返回介绍返回介绍返回介绍反循环位指示器反循环位指示器Reverse Position IndicatorReverse Position IndicatorCN00701返回介绍返回介绍返回介绍返回介绍砾石充填筛管砾石充填筛管Gravel Pack ScreensGravel Pack ScreensCN01045返回介绍返回介绍返回介绍返回介绍筛管类型筛管类型Screen TypesScreen TypesAll-WeldedDual PrepackPerforated PrepackSpecial Clearance PrepackSintered MetalSlotted LinersCN03227返回介绍返回介绍返回介绍返回介绍割缝管割缝管Slotted LinerSlotted LinerCN00559返回介绍返回介绍返回介绍返回介绍Slotted LinersSlotted LinersAdvantagesCost of slotted liner vs wire wrapped screenLarge I.D. for protectionDisadvantagesLow inlet areaSusceptibility to slot erosionSusceptibility to slot encrustation (closing of slot)CN03228返回介绍返回介绍返回介绍返回介绍烧结筛管烧结筛管Sintered Metal Sintered Metal ScreenScreen(Obsolete Design)(Obsolete Design)CN01165返回介绍返回介绍返回介绍返回介绍Sintered Metal ScreenSintered Metal ScreenAdvantagesOne size fits most gravel pack sand sizes vs requiring specific wire wrapped screen gauge sizeTougher than wire wrapped designWall thickness allows for minimum O.D. with maximum I.D. dimension100% inlet flow from any directionLess flow restriction than current prepack screen designsFlexibility to pass short radius bends vs standard prepack screen designsImpervious to acid which will dissolve sand in current prepack screens. Acid will also dissolve any resinSome applications allow sintered screen to be run without base pipe lowering cost and increasing I.D.CN03229返回介绍返回介绍返回介绍返回介绍Sintered Metal ScreenSintered Metal Screen( (continoiucontinoiu ) )DisadvantagesCurrent maximum limit is 100 micron filtration absoluteCertain high nickel alloys are not currently able to be sinteredCN03230返回介绍返回介绍返回介绍返回介绍绕丝焊接筛管绕丝焊接筛管All Welded Wire-All Welded Wire-Wrapped ScreenWrapped ScreenCN00558返回介绍返回介绍返回介绍返回介绍Special ClearanceSpecial Clearance Prepack PrepackAdvantagesLarge flow areaSame O.D. and I.D. as regular non-prepack screensDisadvantagesMinimal prepack gravelRecommended only for wells which will be gravel packedCN03231返回介绍返回介绍返回介绍返回介绍预预充填筛管充填筛管Special ClearanceSpecial Clearance PrepackPrepack Screen ScreenCN00556返回介绍返回介绍返回介绍返回介绍PerforatedPerforated Prepack PrepackAdvantagesGravel pack not requiredPerforated pipe case ruggedDisadvantagesCould become plugged with fines and mudResin coated gravel could break and fall out through perforated pipe caseFlow area through perforated pipe is less than other designsCN03232返回介绍返回介绍返回介绍返回介绍PerforatedPerforated PrepackPrepack Screen ScreenCN00355返回介绍返回介绍返回介绍返回介绍DualDual Prepack Prepack Screen ScreenAdvantagesGravel pack not requiredOuter screen jacket more flexible than perforated prepack screenOuter screen jacket provides more flow area than perforated prepack screenDisadvantagesCould become plugged with fines of mudDimensionally, dual screen prepack has large O.D. and Small I.D. which may restrict production ratesOuter screen jacket may become damaged if run through tight spotCN03233返回介绍返回介绍返回介绍返回介绍双层绕丝预充填筛管双层绕丝预充填筛管Dual-ScreenDual-Screen Prepack Prepack返回介绍返回介绍返回介绍返回介绍DTMZ作业程序作业程序 1.下入防砂管柱和座封服务工具；2.试插入；3.投球座封、验封顶部封隔器；4.座封服务工具正转脱手；5.依次座封、验封底层及以上各隔离封隔器；6.起出座封服务工具。下充填服务工具；7.到位后，检验PACK OFF BUSHING 密封性和补心脱手；8.底层循环测试、分步测试；9.底层砾石充填，反循环清洗残砂；10.检验充填效果；11.继续以上各层防砂。 返回返回介绍返回介绍返回介绍返回介绍返回介绍返回介绍返回介绍返回介绍