Wells – Processes – Placing or shifting well part
Reexamination Certificate
2003-02-12
2008-08-19
Beach, Thomas A (Department: 3671)
Wells
Processes
Placing or shifting well part
C166S195000, C166S084400
Reexamination Certificate
active
07413023
ABSTRACT:
A wellhead seal unit for sealing a subsea oil and/or gas well at the wellhead. The unit comprises a sleeve, sealingly engaged to the workstring and to which, blow out preventer rams can engage. The unit allows the workstring to be rotated and reciprocated within the wellbore without releasing the seal. Methods of cleaning the sealed well and performing an inflow test are described.
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Anthony Ted M.
Beach Thomas A
Domingue C. Dean
Specialised Petroleum Services Group Limited
Waddell Robert L.
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