RESTORING WELL INJECTION ON A LIMITED SPACE PLATFORM

Well Stroker for medchanical solutions

Background

An operator, offshore India’s East Coast, experienced problems with a well which was being converted to an injector. Currently there was no injection possible at the thru tubing sand screen (TTSS) in the well. The TTSS was placed thru a 3.5″ QX Lock Mandrel which was set on a 3.5″ SSD nipple.

Generally, the operator used slickline to remove the GS Profile Lock Mandrels and that was the initial preference for this operation. However, slickline was not able to remove the TTSS even after more than 300 attempts with jars. Due to crane and space limitations on the platform, Coiled Tubing was not an option, and when the slickline attempt failed, the operator called upon Welltec® to pull the mandrel. This was the first ever attempt of releasing a lock mandrel in Welltec’s Asia Pacific region.

OPERATION

Due to the swift response of Welltec, total downtime was limited to just five days and the operator avoided having to mobilize heavy equipment. The Well Cleaner® PST HV created a clear path to the GS profile enabling successful pulling of the problematic sand screen and lock mandrel – a task the conventional method had failed to perform.

During subsequent well testing, well injection up to 22,000 bwpd was achieved compared to zero previously. The well is now ready for the operator to finish conversion to an injector which will facilitate an increase in production from the depleting field.

ACHIEVEMENTS

Following the successful completion of the job the operator stated: “Great Teamwork between the Wireline service company and the Welltec® crew enabled successful completion of a difficult job during day operations only.”

BHT: 230°F AT 2300 METER
BHP: 2300 PSI AT 2300 METER
MAX. DEVIATION: 36.6°

“Great Teamwork between the Wireline service company and the Welltec® crew enabled successful completion of a difficult job during day operations only.”

Job Operator