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Novel Liner System Improves Coring Performance, Rig Safety and Wellsite Processing*
By
Larry M. Hall1, Bob T. Wilson1, and Alan G. Norrie1
Search and Discovery Article #40282 (2008)
Posted March 6, 2008
*Adapted from poster presentation, GEO 2008--Middle East Conference and Exhibition | March 2-5, 2008, Manama, Bahrain.
1 INTEQ, a division of Baker Hughes, Inc. ([email protected])
Abstract
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 offers enhanced safety features and improved core handling on the rig floor. The integral one-piece liners securely containerize the core during acquisition. Vent holes allow expelled gas to escape during recovery to the surface, improving safety during core retrieval and handling. The companion Non-Rotating Inner Tube Stabilizer system eases separation of the 30-ft liner joints, thus improving wellsite handling procedures and safety during extended core runs. The liners are opened quickly and easily at the surface for rapid examination and sampling of the core material.
Conclusions
- The laser-cut liners are run-in-hole as an integral one-piece unit. The design provides stability to the liner system and reduces the potential for jamming.
- The liners successfully containerize the core.
- The use of Non-Rotating Inner Tube Stabilizers allows extended liners to be adjusted for thermal expansion. Extended liners are separated easily and safely into 30-foot lengths at the surface.
- The liners are opened along the length at the wellsite, allowing for rapid description, examination, and sub-sampling of the core.