8-5/8” ESET™ Liner extends 10- 3/4” MLT liner, saves hole section and allows for planned solution in reservoir

Summary:

An Operator in the Norwegian North Sea encountered a restriction 118m (387 ft.) off bottom while running a 10-¾” MLT liner. This was the third attempt to pass the trouble spot. The decision was made to cement the MLT liner in place and find an alternative way to cover up the troublesome Balder formation and part of the main injectite, while still able to keep the planned 5-½” screens across the main reservoir.

Based on the current well situation and potential challenges, an 8-5/8” ESET Solid Expandable Liner was proposed. This system would allow the client flexibility to both rotate the liner while running in hole, as well as the benefit of using a 8-1/2” drilling BHA in the reservoir following the installation. All equipment was packed and mobilized from Enventure’s local warehouse in less than 12 hours, and personnel was in place less than 48 hours after the initial call-off.

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Overview
Document Type
Case History
Date Published
Monday, August 27, 2018
Region
Europe, North Sea, Norway, Norwegian Sea

Additional Document Information

Environment:
Shelf
System Plan:
Contingency
System Type:
ESET
Values Added:
Mitigate risk, Enable planned completion, Maximize ID and TD, NPT reduced, Reach planned TD
Casing Size:
10 3/4"
Expandable Size:
8 5/8"
Liner Length:
251-1000'