More collapse tests add to coiled tubing applications

Journal Article · Mon Jun 17 00:00:00 EDT 1991 · Oil and Gas Journal; (United States)

OSTI ID:5874067

Walker, E J ^[1]; Costall, D ^[2]

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1. BP Exploration Inc., Anchorage, AK (US)
2. Canadian Fracmaster Ltd., Anchorage, AK (US)

The collapse limits of thicker-walled coiled tubing have been determined to ensure safe and successful workover operations. Prudhoe Bay has been using 1.75-in OD coiled tubing for 2 years. When BP Exploration (Alaska) Inc. initially started using this larger size coil, collapse tests were run on 0.109-in. wall thickness coil. These tests provide a base curve by which much work has been performed in the western operating area of the Prudhoe Bay Unit. However, use of 1.75-in. coiled tubing has been expanded to include wall thickness of 0.125, 0.134, and 0.156-in. Except for theoretical calculations, no data were available to ensure that we would know the collapsed limitations for these sizes. To fill in this gap, further collapse testing has been done.

• OSTI ID: 5874067
• Journal Information: Oil and Gas Journal; (United States), Vol. 89:24; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
NATURAL GAS WELLS
FIELD PRODUCTION EQUIPMENT
OIL WELLS
TUBES
MECHANICAL TESTS
MECHANICAL PROPERTIES
PERFORMANCE
PRUDHOE BAY
ARCTIC OCEAN
BAYS
BEAUFORT SEA
COASTAL WATERS
EQUIPMENT
MATERIALS TESTING
SEAS
SURFACE WATERS
TESTING
WELLS
020300* - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing