Technical Library


Get back on planned drilling program and finish the well with an adequate hole size to evaluate potential production zones at TD.


Optimizing the casing program is one of the most critical factors in well design for deepwater applications. Conventional design often dictates that very large surface casing be used to allow passage of a high number of subsequent casing strings telescoping down in size that are required to...


During initial completion operations on a deepwater subsea oil well in the Gulf of Mexico, the 7-3/4 in., 46.1 lb/ft casing failed the pressure test in the production liner. Subsequent operations located the casing leak 1,800 ft above the target completion intervals. The original completion was...


Save the wellbore by installing a SET® 7-5/8" x 9-5/8" 53.5# Openhole Liner over a 420.86 ft (128.28m) interval to isolate the weak section.


A gas production well had been plugged and abandoned since it was first drilled in 2008 after a hole in the 9-5/8 in. production liner was discovered, through which fluid leaked into the formation. Previous attempts to isolate the damaged casing through cement squeezing had proven unsuccessful...