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APP and Drill String Services, Inc. have collaborated to design and manufacture a Lightweight Temporary Abandonment (TA) Cap for Wellheads. Shell and Kerr-McGee have successfully installed several of these caps.
The Lightweight Wellhead TA Cap was developed to reduce rig time. The cap is installed and removed with the use of a Remote Operated Vehicle (ROV).
The installation sequence is totally independent of additional equipment, eliminating the use of the drill string or other surface equipment such as winches, davits, or A-frames. The TA Cap can be installed while the rig is accomplishing other tasks. The caps are manufactured from high quality polyurethane and the weight is extremely manageable with ROVs – both in air and in water. The caps are fitted with a stainless steel T-handle, and a 17H ROV hot stab receptacle for inhibitor injection. There are currently two sizes available - a 27 1/4 inch and a 36 3/4 inch, with virtually unlimited ability for additional sizes. |
APP Lightweight Wellhead TA Cap versus Conventional Methods:
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