Choke manifold

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1、OperationInstruction－ChokeAndKillManifoldSK-JG(YG)-002(A1)ChokeandKillManifoldWhendrillingthewell,thechokeandkillmanifoldwereconnectedtoeithersideoftheBOP;itcanaccomplishthechokecirculationandbleedbyopeningandclosingthegatevalveofthemanifoldoradjustin

2、gthechokevalve.Italsocanadjustthepressurebetweenthebitpressureandthecasing.Theyarethetoolsusedforthebalance-drillingortheunbalance-drilling.Ifthewellblowoutorkickinthedrillingprocess,bleedandreducethepressurebyopeningthechokemanifoldinthesidewayortheg

3、atevalveinthemiddle.Mudwithhighpressurefromthewellpumpcancontroltheblowoutandkick,whenitgoesintothecasingthroughthekillmanifold.Thechokemanifoldandthekillmanifoldarethenecessaryequipmentfordrilling.SpecificationScopeOftheChokeandKillManifold:WorkingPr

4、essure:3000psi-15000psiWorkingMedium:Oil(Gas)﹑Mud﹑H2S﹑CO2Mainboresize:21/16"29/16"31/8"31/16"41/16"ChokeOutletsize:21/16"29/16"31/8"31/16"41/16"Outletsize:21/16"29/16"31/8"31/16"41/16"TemperatureClass:KU(-60℃to121℃)MaterialClass:EEFFHHProductSpecifica

5、tion:PSL3/3GProducecriterion:APISPEC6AAPISPEC16CNACEMR-0175MethodtoExpresstheTypeoftheChokeandKillManifold:JG–XX–XXX–XXNumberofcompanyproductsMaxworkingpressureMPa,plus‘L’whenthemanifoldisverticalManualControlwith‘S’ThewaytoControlchokevalve:Hydraulic

6、Controlwith‘Y’PneumaticControlwith‘Q’ThecodenameofthechokemanifoldYG–XX–XXNumberofcompanyproductsMaxworkingpressureMPa,plus‘L’whenthemanifoldisverticalThecodenameofthekillmanifold-1-Example：JG–SY–70L–00DNumberofcompanyproductsMaxworkingpressureis70MPa

7、,themanifoldisverticalThewaytoControlchokevalve:HydraulicControlandManualControlThePinyincodenameofthechokemanifoldYG–35–00BNumberofcompanyproductsMaxworkingpressureis35MPaThePinyincodenameofthekillmanifoldStructuralFeatures:Thechokemanifold(Seefigure

8、1)containsonewaymainbleedline,leftandrighttwowayschokeline,bufferpipe,etc.Middlewaybleedlinecontainstwogatevalves,thebleedwasconnectedtothemudpit;sidewaychokelinecontainsthreegatevalvesandachokevalve,eachsidecanbeusedsingly;onesideofbufferpipe