SET® Enables Planned Completion in the Gulf of Mexico

Summary:

An Operator drilling a well in the Gulf of Mexico encountered significant mud losses below 9-5/8 in. casing shoe at approximately 10,900 ft. MD (~2,000 ft. above TD). The well was planned to be completed with 7 in. production string at TD and through the 9-5/8 in. casing. Losses were initially cured with LCM pills. The well was drilled to 11,215 ft. where they once again experienced significant mud losses, which this time, were not able to be cured. In these conditions, the operator was forced to run a casing string at this depth before reaching total depth. The standard option would be running 7 in. casing at this depth, then 5-1/2 in. production string at TD.  

Instead, the decision was made to run a 7-5/8 x 9-5/8 in. SET® Openhole Liner (OHL) to cover the weaker zone in order to increase the mud weight and drill to TD. This option would allow the operator to stay on initial design and run the 7 in. production casing through the expanded 7-5/8 in. liner to TD.

Added Value

Instead, the decision was made to run a 7-5/8 x 9-5/8 in. SET® Openhole Liner (OHL) to cover the weaker zone in order to increase the mud weight and drill to TD. This option would allow the operator to stay on initial design and run the 7 in. production casing through the expanded 7-5/8 in. liner to TD.

 

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Overview
Document Type
Case History
Date Published
Monday, January 8, 2018
Region
North America, USA, GOM

Additional Document Information

Environment:
Shelf
System Plan:
Contingency
System Type:
OHL
Casing Size:
9 5/8"
Expandable Size:
7 5/8"
Liner Length:
1001-2000'