Cameron MBS Multi-Bowl Wellhead System

Transcription

1 Cameron MBS Multi-Bowl Wellhead System

2 MBS Multi-Bowl Wellhead System Tubing Head Adapter Tubing Hanger Upper Casing Spool Pack-off Bushing Emergency Slip and Seal Assembly Lower Casing Head Standard MBS and MBS Pack-off Support Bushing Emergency C-1 and MBS Pack-off Support Bushing SD016672

3 MBS Multi-Bowl Wellhead System The Cameron MBS Multi-Bowl Wellhead System is a compact, unitized wellhead which can be used as an alternative to conventional wellhead systems in onshore and platform applications. The MBS Wellhead offers the following advantages over conventional systems: The lower and upper casing heads are installed as a single unit, saving installation time. The casing and tubing can be installed, landed and sealed through the BOP stack, increasing safety and saving rig time normally required to remove and reinstall the BOP stack during conventional wellhead installations. Uses many conventional wellhead components and practices. Components of the MBS Wellhead System are based on field-proven technology and offer a range of features including: Lower Casing Head The lower casing head incorporates a slip-on weld bottom connection with a single O-ring to seal between the casing stub and the casing head inside diameter. The lower casing head is available with line pipe threaded, flanged or studded outlets. The casing head incorporates a straight-bore design with a 45 load shoulder for casing hanger support. This design minimizes hoop load on the housing, provides a high hanging capacity and reduces the risk of bowl damage due to drill stem rotation. Upper Casing Spool The upper casing spool is a straight-bore design. The casing spool includes two sets of type N lockscrews to lockdown wellhead components. These lockscrews are designed with the packing in front of the threads to prevent contamination of the threads by wellbore fluid. The spool is available with studded outlets. The MBS Wellhead casing hanger is a high-capacity, mandrel-type hanger which is rated to the full joint strength of the suspended casing. The hanger is designed with integral flutes which allow cement returns to pass up through the BOP stack. Pack-off Bushing The MBS Wellhead pack-off bushing lands on the casing hanger to suspend and seal the intermediate casing string(s). The inner seal on the bushing is a D seal which is energized by plastic packing. This seal can be reenergized, if necessary, throughout the life of the well. The outer seal is radially energized. Tubing Hangers The MBS Wellhead tubing hanger lands on the pack-off bushing and is locked in place with N lockdown screws. Several alternative tubing hangers are available including the coupling (HT, HT-2), tubingless (TLC), mandrel (CXS, T), and dual (MB-CDT and MB-TLC). Control line options are available for most applications. A comparison of these tubing hangers is available on the MBS Tubing Hanger Comparison chart. Tubing Head Adapter The MBS tubing head adapter provides the connection point for the Christmas Tree. t is available in several types to fit individual applications. Emergency Slip and Seal Assemblies n the event that casing becomes stuck and slips must be set, the upper casing spool may be lifted to install a sliptype hanger, cut off the casing and install the emergency pack-off bushing assembly. This feature eliminates the expensive, time consuming process of cutting pipe inside the head with internal casing cutters. Auxiliary Equipment The MBS Wellhead System has a complement of installation tools including BOP test plugs, wear bushings and handling tools.

4 MBS Component Options Standard and Pack-off Bushing Emergency and Pack-off Bushing MBS Pack-off Support Bushing MBS Dual Pack-off Support Bushing MBS Emergency Pack-off Support Bushing MBS Dual Emergency Pack-off Support Bushing MBS Fluted C-1 Emergency Wellhead Options SD MBS Multi-Bowl Wellhead MBS Multi-Bowl Wellhead with Trulok Bottom

5 MBS Tubing Hanger Options HT Completion HT-2 Completion TLC Completion CXS Completion SD T Completion MB-TLC Dual Completion MB-CDT Dual Completion MBS Tubing Hanger Comparison Name Single/Dual Type Body Seal Neck Seal Control Line HT Single Coupling Elastomer Elastomer None HT-2 Single Rotatable Coupling Elastomer Elastomer None TLC Single Mandrel Elastomer Metal None CXS Single Mandrel Elastomer Elastomer Optional, Non-Continuous T Single Mandrel Elastomer Metal Optional, Continuous MB-TLC Dual Split Elastomer Elastomer None MB-CDT Dual Split Elastomer Metal Optional, Continuous

6 Western Hemisphere Cameron PO Box 1212 Houston Texas Tel Fax Eastern Hemisphere Cooper Cameron (U.K.) Ltd. 5 Mondial Way Harlington Hayes, UB3 5AR England Tel Fax Asia Pacific/Middle East Cooper Cameron (Singapore) Pte. Ltd. No. 2 Gul Circle, Jurong ndustrial Est Locked Bag Service No. 3 Jurong Town Post Office Singapore 2262 Republic Of Singapore Tel Fax Cameron and Trulok are trademarks of the Cooper Cameron Corporation Cooper Cameron Corporation, Cameron Division, Printed in USA, 2/98, TG/3M, WR6576/TC1262