Lex – Solution to increase production by 10-45% in deviated wells

Solution to increase production by 10-45% in deviated wells

Oil production optimization problems make companies cut costs and reconsider the choice of pumping equipment to boost the well operation. In many deviated wells cases, the optimization of production requires pumping unit deployment. We offer a new solution to safely penetrate even highly deviated sections of wells and work in deviated and horizontal wells: the compact Ultra-High-Speed (12,000 rpm) ESP by Lex (UHS ESP™).

Solution to increase production by 10-45% in deviated wells

About 1/3 of wells worldwide have deviated sections that limit the ability to install standard length equipment at the desired depth. When operating in the deviated area, the equipment has peak bending loads, leading to premature failures. As a result, up to 30% of the wells reserves remain untapped.

Sucker rod pumps or top drive cavity pumps may only be used in moderately deviated wells due to the risks of sucker rod breakage and back off and limited rotor speed. That is why oil companies are more likely to use submersible cavity pumps.

At the same time, companies limit the speed of lowering the equipment, increasing the installation time, and incurring additional repair crew costs and well downtime losses. 

Developing our solution, we have reconsidered and adapted the Lex Ultra-High-Speed ESP (UHS ESPTM) for oil production in deviated wells. 

The Lex Ultra-High-Speed ESP (UHS ESPTM) has a rotational speed of up to 12,000 rpm, resulting in a 10-fold increase in the generated head. This increase made it possible to reduce the number of stages in the pump and reduce its size. The increase in speed also influenced the reduction in the size of the gas separator and permanent magnet motor. Due to this feature, the length of the high-speed ESP became shorter by 2–3 times (up to 29,5 ft (9 m)) compared to standard equipment and work in previously inaccessible deviated sections of wells.

As a result, the reduction in the total length allows to install the ESP and increase the fluid flow rate by 30–40% by lowering the bottom-hole pressure and buildup of the drawdown.

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Related products

Ultra-High-Speed ESP (UHS ESP™)

Ultra-High-Speed ESP (UHS ESP™)

Lex Ultra-High-Speed ESP (UHS ESP™), driven by a permanent magnet motor (PMM) and having an operating speed range from 1,000 to 12,000 rpm, is unrivaled worldwide. Due to its high nameplate operating speed of 10,000 rpm, the length of the UHS ESP™ is 2–3 times shorter than any conventional ESP. The efficiency of the Permanent Magnet Motor exceeds 91%, the use of hard-alloy materials gives our modular pump the abrasion resistance up to 2,000 ppm (2,000 mg/l).

Universal Permanent Magnet Motors

Universal Permanent Magnet Motors

We develop and continually improve Lex Universal Permanent Magnet Motor (Universal PMM) technology, an alternative way to provide rotational energy for electrical submersible, screw or sucker rod pumps. Lex features a product range of Lex UPMM from 85 to 12,000 rpm operating speeds, high efficiency up to 95%, operational flexibility, lower motor heating rise, stable operation at any frequencies, and high-temperature environments up to 392 °F (200 °C).

Related case studies

-70% energy saving, -50% total cost of ownership economy at field in Republic of the Congo, Middle Africa
Runlife has been increased by 4 times, -29% total cost of ownership economy at onshore and offshore fields in Democratic Republic of the Congo, Middle Africa