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TransCoil rigless-deployed ESP expands the operating envelope and improves reliability vs. existing alternative deployment systems
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The TransCoil rigless-deployed ESP system features an inverted ESP with the motor on top connected directly to the power cable. This unique design eliminates the motor lead extension entirely, removing the weakest connection in traditional ESP systems. (Photo: Business Wire)
The TransCoil system―developed in participation with Saudi Aramco―features an inverted ESP system with the motor connected directly to a new, proprietary power cable configuration, eliminating the traditional ESP power cable-to-motor connection, which improves overall system reliability. Unlike wireline-deployed ESPs, the fully retrievable TransCoil system does not have an in-well “wet connection,” which requires a rig to pull and replace if the wet connection fails.
The innovative power cable design enhances the reliability of the
deployment string compared to coiled tubing-deployed ESPs that simply
pull the power cable through the coiled tubing. Extensive fatigue
testing and thermal growth analysis were conducted at the
The TransCoil system can be installed in 4½-in. to 9-in. casing in wells with flow rates up to 18,000 BPD. In mature offshore fields, where high intervention costs can limit the application of ESPs, the system can be deployed through the existing 4½-in. tubing, saving the time and money required to pull the existing completion. Another advantage of the TransCoil technology compared to wireline-deployed ESPs is that it can be installed through a deviation in the wellbore. This capability allows operators to land the ESP closer to the producing zone for greater reservoir pressure draw down and reserve recovery.
A TransCoil system was recently installed and commissioned in Saudi
Aramco’s Khurais field. Rig-based work to replace the completion and
install a vertical electrical penetrator system was completed ahead of
the rigless operations. A
“With a large ESP installation base, including many ESPs installed in
our offshore fields, the ability to rapidly deploy ESPs riglessly
provides tremendous cost benefits to our overall operations. The
TransCoil system is particularly beneficial in our challenging high H2S
fields as the premium metallurgy in the system can significantly extend
the ESP operational life in harsh environment wells,” says Mr. Nasir K.
“Working together with Saudi Aramco, we have addressed the industry’s
critical need for a reliable alternative deployment option that reduces
the cost and time associated with deploying ESP systems without
introducing new potential failure modes,” says
The TransCoil rigless-deployed ESP system is the latest example of Baker Hughes’ strategy to improve well efficiency, optimize production and increase ultimate recovery.
Melanie Kania, +1-713-439-8303