High-temperature ESP motors
Increase production in heavy oil, gassy wells, and other extreme heat environments.
Improve the overall lift efficiency of a submersible lift installation with the AGH advanced gas-handling device, which maintains a higher gas/liquid ratio (GLR) in the tubing string. It is suitable for high-GOR, gassy wells with up to 45% gas volume fraction (GVF) at low intake pressures.
The system’s higher GVF reduces the hydraulic horsepower required to lift fluid to surface. The AGH device uses a unique centrifugal stage design to alter the pressure distribution of the impeller, creating a homogenized mixture with reduced gas bubble size. This conditioned fluid behaves as a single-phase fluid before entering the pump.
In Kuwait, a well consistently gas locked after 60 to 70 min of operation using a REDA systems pump with a rotary gas separator. An AGH device was added to the equipment string above the gas separator with no other equipment changes. Production increased to 2,100 from 900 bbl/d with no cycling because of gas lock.
A well in Mexico was producing 4,774 bbl/d (258 ft3/bbl GOR at stock-tank conditions) with gas lift using 1 MMcf/d of gas. An ESP with an AGH device was installed below a packer with fluids having 29% GVF. Production increased to 9,409 bbl/d of oil—at 363 ft3/bbl GOR at stock-tank conditions—with no gas locking.
This initial appraisal of the latest-generation rigless wireline-deployed ESP replacement system indicates that it has the potential to drastically lower ESP operating costs by reducing production deferment, minimizing HSE exposure, diverting rigs to other operations, and positively impacting asset value.
Designed to improve the overall lift efficiency of a submersible lift installation.
High-temperature ESP system improves recovery and reliability in steam-assisted gravity drainage (SAGD) well.
A company actively operating and developing electric submersible pump (ESP) systems limits their use for the production of fluids whose free gas volume fraction (GVF) at admission is not more than about 40%.
Horizontal drilling and hydraulic fracturing technology has enabled a rapid growth of production from the Mississippi Lime Formation during the last five years. Well drilling and stimulation designs are being continuously improved, resulting in higher initial production rates.