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Antelope CentraMax tool performs for GoM operator

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Oilfield Technology,

Antelope Oil Tool (AOT), an industry leading manufacturer and supplier of high quality patented casing and cementation equipment, adds another successful run with their CentraMax® RT1 Centraliser in deepwater deviated and under-reamed wellbores, saving 60% on casing centralisation. 

A customer drilling in 7000 ft in the Gulf of Mexico faced a challenging casing string application that required them to run a very deep and heavy weight 16 in. liner to a record depth in a deviated and under-reamed well. The Operator was required to run the 16 in. casing through an 18.25 in. ID restriction at the 18 in. supplemental hanger through an 18.125 in. ID restriction at the 22 in. casing shoe track. The 16 in. liner was to be run to 24 000 ft and centralised in a 21 in. under-reamed hole with 22° of inclination. The liner was a mixed string of 16 ft 97# and 16.15ft 127# casing and weighed well over 2 million lbs. The weight was such that the client would not have been able to POOH after the shoe reached 19 000 ft making the centralisation even more critical.

Utilising Antelope’s CentraMax RT1 single-piece centraliser with a WearSox internal thermal spray metal stop, they were able to run the casing to bottom, achieving a great cement job.

Operators face tough challenges when centralising casing in tight tolerance deepwater wells. Among those tough challenges is the product decision to help guide casing to bottom and achieve a successful primary cement job. Rather than utilise centraliser subs (a more standard offering), the operator opted to run Antelope’s proprietary “On-The-Pipe Solution” for a technically superior alternative.

“These products are really starting to make traction in the close tolerance centraliser market. Their ability to centralise casing in the toughest and tightest environments, and the huge cost savings our clients receive from utilising this product line is exactly what we had in mind when we designed the CentraMax CT line,” said Bill Kelley, President and CEO.

Adapted from a press release by David Bizley

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