内防喷器是一种井口快速防喷工具。是在钻井中发生井涌（溢流）时，快速将内防喷器连接在钻柱顶端，用以控制井涌和井喷。它具有承压高、放喷功能、密封可靠、操作方便、开关迅速等优点。InsideBOPInsideBlowoutPreventerisaquickwellheadpreventerwhichisthenecessarytoolassignedbytheinternationalAssociationofDrillingContractors(IADC)indrillingoperationns.Whentheblowoutishappenedduringdrillingtoolsarecomingoutofholetheinnerblowoutpreventerisconnectedtothetopofdrillstringinordertocontrolwellkickorblowout.Theinsideblowoutpreventerisneeded,becausethedrillpipesasmuchaspossibleshallbeputintoholeagain.Theinsideblowoutpreventerinfig.1.isthenewdevelopedproductwhichhasbeenusedtosubstituteimportproductandusedinsomebigoilfieldsinChina.Afterbeingtestedandusedbythec***umers,ithasfullyprovedthatthefeaturesandc***tructionfortheproducthascaughtuptheinternationallevels.内防喷器技术参数SpecificationofInsideBlowoutPreventer:连接螺纹Connection外径O.D(in)内径I.D(in)长度length（in）重量Weight(Kg)2-3/8IF3-3/8″-3-3/4″1-1/2″26″272-7/8IF4-1/8″-4-1/4″1-3/4″28″-30″403-1/2IF4-3/4″-5-1/4″2″30″-31″574IF6-1/4″-6-3/4″2-1/2″33″-34″1104-1/2IF6-3/8″-7″2-13/16″33″-34″1205-1/2FH7″-7-1/2″2-13/16″33″-34″1406-5/8REG8″2-13/16″34″1807-5/8REG9-1/2″2-13/16″34″220)