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Qualification and use of a mill-premium connection in a geopressured Gulf of Mexico application

Journal Article · · J. Pet. Technol.; (United States)
DOI:https://doi.org/10.2118/16106-PA· OSTI ID:6189997
Qualification tests were conducted on a new connection for use in a geopressured Gulf of Mexico application. Possible compaction of an unconsolidated reservoir under pressure decline made postyield axial strains in the well casings possible. Strain-limit tests were conducted in addition to conventional tests for structural load capacity and gas/thermal-cycle sealing. Unique approaches were also taken on the thread compound for the connection to alleviate the ''trapped-dope'' phenomenon. The connection was a mill-premium connection with tapered, interference-fit threads, a metal-to-metal seal, and a teflon seal ring. Testing and use of the connection were successful, including the unique strain-limit and thread-compound work. This paper describes project background, test design and execution, and field use of the connection.
Research Organization:
Arco Oil and Gas Co. (US)
OSTI ID:
6189997
Journal Information:
J. Pet. Technol.; (United States), Journal Name: J. Pet. Technol.; (United States) Vol. 40:8; ISSN JPTJA
Country of Publication:
United States
Language:
English