OPERATOR’S MANUAL - storage.googleapis.com

1 operator 'S MANUALMSP 21 1/4"-2000 psi annular blowout PreventerPlease contact Hydril Pressure Control Equipment for any assistance or questions concerning the informa-tion in this MANUAL . All information in this MANUAL is the exclusive property of Hydril Company CONTROL EQUIPMENTHYDRIL COMPANY LP / BOX 60458 / HOUSTON TEXAS 77205 PHONE: (281) 449-2000 / FAX: (281) 985-2828 / WEB: 2001 HYDRIL COMPANY LP PRINTED IN MAY 2001 REV. B, JANUARY 2002 ROPERATOR S MANUALMSP 21 1/4-2000 psiAnnular blowout Preventer2 TABLE OF CONTENTSPAGEOPERATOR QUICK REFERENCE.

2 3 SECTION INSTALLATION AND Surface Operation .. Subsea Operation ..10 SECTION PHYSICAL Engineering Data .. Bolt and Wrench Data .. Outside Dimensions .. Inside Dimensions .. API Ring Joint Flange Data .. Clamp Hub Data ..19 SECTION PACKERS AND Packing Units .. Seals ..25 SECTION MAINTENANCE AND Maintenance .. Seal Testing .. Packing Unit Testing .. BOP Modifications ..29 SECTION DISASSEMBLY AND Disassembly Screwed Head .. Assembly Screwed Head .. Disassembly Latched Head .. Assembly Latched Head.

3 35 SECTION PARTS AND Parts List Screwed Head .. Parts List Latched Head .. Preventor Storage .. Rubber Goods Storage ..40 ROPERATOR S MANUALMSP 21 1/4-2000 psiAnnular blowout Preventer3 RCLOSINGPRESSUREOPENINGPRESSUREC ontrol PressuressssssSurface Control Pressure psiWELL PRESSURE psiClose cautiously to prevent collapse of *Use closing pressure shown at initial closure to establish seal off and reduce closing pressure proportionally aswell pressure is increased. Well pressure will maintain closure after exceeding the required level. See Section 1 forcontrol pressure graphs.

4 Closing pressures are average and will vary slightly with each packing stripping is obtained by adjusting the Control Pressure to achieve a slight drilling fluid leakage as the tooljoint passes through the packing psi12 psi14 psi16 psi18 psiSubsea OperationDrilling Fluid DensityClosing Pressure Increase Per 100 Foot Water DepthInitial*Pipe SizeClosure5001000150020003 1/212758305703202004 1/2"-7"9006704202002009 5/8"60042024020020013 3/8"-16"400270**CSO130013001300130013004 ROPERATOR S MANUALMSP 21 1/4-2000 psiAnnular blowout Preventer1235/16" RodTape MeasureProper Procedure for pressure testing any annular blow-out preventer (BOP) ensures subsequent seal off andmaximum packing unit life.

5 Reliable seal off tests aremade by initially closing the packing unit with prescribedclosing chamber pressure on the recommended size testpipe, proportionally reducing closing pressure as wellpressure is increased, and by determining the remainingpiston travel after seal off is achieved. Optimum packingunit life is obtained by testing at low rubber stress packing unit stress is achieved by use of theminimum closing chamber pressure that will initiate andmaintain seal off on the recommended size test MSP blowout preventer is designed to be wellpressure assisted in maintaining packing unit seal offonce initial seal off has been effected.

6 Initial seal off iseffected by applying pressure to the closing chamber. Aswell pressure or test pressure is increased, the closingforce on the packing unit also increases. As well pressureexceeds the required level the packing unit is maintainedclosed on the recommended size test pipe by well pres-sure alone. Once initial seal off is achieved, it is recom-mended that closing pressure be proportionally reducedas well pressure is increased in order to maintain theoptimum closing force on the packing unit. Optimumclosing forces for high well pressures may require carefulapplication of pressure to the opening chamber.

7 Closingpressure required to effect initial seal off may vary slightlybetween individual packing units. Begin the test with therecommended initial closing Stroke can be measured on GK blowoutpreventers through a vertical passage in the top of theBOP head.* The maximum and minimum distances fromthe top of the head to the top of the piston are stamped onthe BOP head and are also listed in the table stroke remaining at seal off is a direct indicator ofremaining packing unit life. Record the piston stroke andthe closing pressure at seal off for each test.

8 Comparewith previous results and with maximum piston stroke forthe BOP to ensure subsequent seal offs. A valid test onany annular BOP is only achieved when the remainingpiston stroke is measured at test seal off.*0lder model BOPs may not have vertical passage in head. SeeSection for information on field DATABore*21 1/4 mmClosing ( )litersOpening ( )litersRecommended TestPipe Size4 1/2 mmFull Piston Stroke11 1/4 mmDistance From Top of Head To Top of PistonScrewed HeadMaximum Piston FullDown15 1/2 mmMinimum Piston at FullStroke4 1/4 mmLatched HeadMaximum Piston FullDown15 1/2 mmMinimum Piston at FullStroke4 1/4 mmSales Headquarters / Box 60458 / Houston, Texas 77205 Telephone: (281) 449-2000 / FAX: (281) 985-2828 Eastern Hemisphere / Hydril Ltd.

9 Minto Avenue Altens Industrial EstateAberdeen, AB1 4JZ Scotland / Telephone: +441-224-878-824 / FAX: +441-224-898-524 annular BOP TESTING AND OPERATIONR*BOPs with 3000 psi top and bottom connectors have 20 3/4" Control Equipment5 ROPERATOR S MANUALMSP 21 1/4-2000 psiAnnular blowout PreventerFigure 1-1 Cutaway view of MSPwith packing unitfully openCLOSINGCHAMBERBODYPISTONOPENINGCHAMB ERHEADPACKINGUNITWEARPLATEPISTONINDICATO R6 ROPERATOR S MANUALMSP 21 1/4-2000 psiAnnular blowout PreventerFigure 1-2 Upward force exertedby the piston squeezespacking unit rubber inward intoa sealing Hydril MSPblowout preventer is an annular blowoutpreventer which will close and seal

10 Off on drill pipe, tooljoints, tubing, casing, or wireline in the wellbore orcompletely seal off the open hole to full rated workingpressure by compression of a reinforced elastomer pack-ing element. This preventer has been developed for useon surface installations and it can also be used subsea. Inaddition, the GK meets the requirements of API Recom-mended Practices 53*.Hydraulic pressure applied to the closing chamber (referto Figures 1-2 through 1-6) raises the piston forcing thepacking unit into a sealing engagement. Wellbore pres-sure (or test pressure) acting on the piston from below thesealed off packing unit further increases the closing pipe can be rotated and tool joints stripped through aclosed packing unit while maintaining a full seal on normal closing unit having a separate pressureregulator valve for the annular blowout preventers andsufficient accumulator volume (see Section of thismanual for chamber volumes) can be used to operate theGK blowout preventer .