Gravel packing dual zones in one trip reduces offshore completion time
- Conoco Inc. (US)
- Baker Sand Control (US)
A single trip, dual-zone gravel pack system was used to successfully gravel pack two wells on Green Canyon platform 52 A in the Gulf of Mexico. An average 56 hours was saved on each well, representing reductions of about 25% in completion time and 26% in completion cost per well. Time-sensitive costs had the largest impact on Green Canyon 52 A final well completion cost; therefore, new technology or more efficient operations were required to minimize completion time. One way to enhance project economics was to gravel pack two separate zones in one trip. In this paper, four objectives are addressed during development of a single trip tool to gravel pack the stacked zones of the Marquette project. These were time and cost reduction, removal of loss circulation material (LCM) prior to gravel packing, zone isolation during gravel packing and use of conventional gravel placement techniques. The design requirement that all LCM (salt and/or viscous polymer pills), perforation debris and formation sand be removed from the wellbore prior to gravel packing was accomplished by incorporating a washdown feature that allows circulation at the bottom of the gravel pack assembly prior to landing in the sump packer.
- OSTI ID:
- 5678683
- Journal Information:
- World Oil; (United States), Vol. 212:9; ISSN 0043-8790
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
OFFSHORE OPERATIONS
WELL COMPLETION
OIL WELLS
STOWING
COST
GULF OF MEXICO
ATLANTIC OCEAN
CARIBBEAN SEA
SEAS
SURFACE WATERS
WELLS
020300* - Petroleum- Drilling & Production
423000 - Engineering- Marine Engineering- (1980-)
020700 - Petroleum- Economics
Industrial
& Business Aspects