Novel-Liner System Improves Coring Performance, Rig Safety and Wellsite Processing

Larry M. Hall* and Bob T. Wilson
INTEQ, Baker Hughes, UAE
*[email protected]

A one-piece aluminum inner barrel liner system has been employed to protect and containerize core material during coring operations with conventional and wireline core barrels. The system offered enhanced safety features and improved core handling on the rig floor. The integral one-piece liners securely containerized the core during acquisition and prevented jamming, leading to increased core recovery when compared to other liner systems. Vent holes allowed expelled gas to escape during recovery to the surface, improving safety during core retrieval and handling. The companion non-rotating inner tube stabilizer system eased separation of the 30-ft liner joints, thus improving wellsite handling procedures and safety during extended core runs. The design allowed the liners to be opened quickly and easily at the surface for rapid examination and sampling of the core material. Case history data from Arabian Gulf wells are presented.

AAPG Search and Discovery Article #90077©2008 GEO 2008 Middle East Conference and Exhibition, Manama, Bahrain