XLift high-pressure gas lift system | Schlumberger

XLift

High-pressure gas lift system

The XLift high-pressure gas lift system brings together carefully selected valves and mandrels into a complete system that enables reliable and accurate control of well production for maximum reserves recovery. By enabling gas lift wells to be operated with higher injection pressures and rates and at deeper injection points, the XLift system increases well performance. The higher operating pressure enables completion of wells with fewer valves and mandrels, which makes this system not only cost effective but also a reliable choice with the reduction of possible leak points.

Our gas lift system experts, highly trained and experienced, can help you choose the most appropriate valves and mandrels for your XLift system to enhance the reliability and longevity of your completion and maximize the productivity of your reservoir.

Gas lift valves

The XLift system uses a 1 3/4-in-OD gas lift valve specifically designed and tested to achieve reliable, robust operations in high-flow-rate conditions with minimum turbulence and pressure drop. To accommodate higher operating gas injection pressures, the 1 3/4-in valve incorporates a dual-seal edge-welded bellows system, which reduces the internal gas charge while increasing the operating injection pressure through a pressure intensifier. During offshore operations, this technology enables the operator to inject high-pressure gas below the mudline and significantly improve the depth of injection to maximize drawdown and increase production. The valves also feature a venturi flow configuration for more efficient and stable gas throughput.

Barrier-qualified valve back-check

The valves in the XLift system incorporate a positive-sealing barrier-qualified valve back-check to replace the velocity valve back-check systems used in traditional gas lift valves. The check ensures one-way flow through the tubing, closing and sealing if flow begins in the opposite direction. It forms a metal-to-metal barrier seal to reliably eliminate potential leak paths from tubing to casing, which improves tubing integrity.

Side pocket mandrels

The side pocket mandrels feature angled injection ports in the mandrel body and pocket to optimize the flow of injection gas into the gas lift valves. This reduces flow turbulence, reducing destructive erosion and minimizing pressure drops. The pocket also has no entry or exit restrictions to gas passage, a feature of the XLift system that ensures gas flow is regulated solely by the valve to ensure maximum use of the available surface gas injection pressure.

The mandrel design also accommodates two full-length, flush-mount grooves to accommodate cables or control lines. Unlike traditional side pocket mandrels that require guard systems that increase their outside geometry, the mandrels in the XLift system enable multiple cables or control lines to pass through without altering the original outside drift diameter of the mandrel body.

The flush-mounted bypass system also offers maximum protection to the lines as they pass the mandrel body, which is critical for overall completion reliability in deep, highly deviated wells.

The mandrels for the XLift system are considered part of our premium round mandrel product line. Schlumberger personnel perform all critical manufacturing processes in-house to ensure complete process control. Schlumberger is the only gas lift mandrel manufacturer that can perform all critical processes—machining, welding, heat treatment, and inspection—in-house.

XLift High-Pressure Gas Lift System

 
Gas Lift Valve Specifications
Gas Lift Valve Specifications Valve type Gas Lift Valve Specifications XLO-B Gas Lift Valve Specifications XLOR-B Gas Lift Valve Specifications XLI-B
Gas Lift Valve Specifications Description Gas Lift Valve Specifications Orifice Gas Lift Valve Specifications Orifice rupture disc Gas Lift Valve Specifications IPO unloading
Gas Lift Valve Specifications OD (not incluting latch), in Gas Lift Valve Specifications 1 3/4 Gas Lift Valve Specifications 1 3/4 Gas Lift Valve Specifications 1 3/4
Gas Lift Valve Specifications Length with latch, in [mm] Gas Lift Valve Specifications 33 [838] Gas Lift Valve Specifications 37 [940] Gas Lift Valve Specifications 34 [864]
Gas Lift Valve Specifications Valve back-check Gas Lift Valve Specifications Barrier Gas Lift Valve Specifications Barrier Gas Lift Valve Specifications Barrier
Gas Lift Valve Specifications Validated max. operating pressure, psi [MPa] Gas Lift Valve Specifications 10,000 [69] Gas Lift Valve Specifications 10,000 [69] Gas Lift Valve Specifications 10,000 [69]
Gas Lift Valve Specifications Function test pressure†, psi [MPa] Gas Lift Valve Specifications 5,000 or 10,000 [34 or 69] Gas Lift Valve Specifications 5,000 or 10,000 [34 or 69] Gas Lift Valve Specifications 5,000 or 10,000 [34 or 69]
Gas Lift Valve Specifications Max. surface gas injection pressure, psi [MPa] Gas Lift Valve Specifications N/A Gas Lift Valve Specifications N/A Gas Lift Valve Specifications 5000 [34]
Gas Lift Valve Specifications Max. temperature, degF [degC] Gas Lift Valve Specifications 350 [177] Gas Lift Valve Specifications 350 [177] Gas Lift Valve Specifications 350 [177]
Gas Lift Valve Specifications Min. temperature, degF [degC] Gas Lift Valve Specifications 32 [0] Gas Lift Valve Specifications 32 [0] Gas Lift Valve Specifications 32 [0]
Gas Lift Valve Specifications Venturi orifice size range, in Gas Lift Valve Specifications 8/64 to 32/64 8/64 to 32/64 8/64 to 32/64
Gas Lift Valve Specifications Differential activation mechanism Gas Lift Valve Specifications N/A Gas Lift Valve Specifications Rupture disc Gas Lift Valve Specifications N/A
Gas Lift Valve Specifications Materials Gas Lift Valve Specifications Gas Lift Valve Specifications Gas Lift Valve Specifications
Gas Lift Valve Specifications Body parts Gas Lift Valve Specifications INCONEL 925, MONEL Gas Lift Valve Specifications INCONEL 925, MONEL Gas Lift Valve Specifications INCONEL 925, MONEL
Gas Lift Valve Specifications Venturi orifice Gas Lift Valve Specifications Tungsten carbide Gas Lift Valve Specifications Tungsten carbide Gas Lift Valve Specifications Tungsten carbide
Gas Lift Valve Specifications O-rings Gas Lift Valve Specifications Viton Gas Lift Valve Specifications Viton Gas Lift Valve Specifications Viton
Gas Lift Valve Specifications External seals Gas Lift Valve Specifications Modified Campac carbon Gas Lift Valve Specifications Modified Campac carbon Gas Lift Valve Specifications Modified Campac carbon
Gas Lift Valve Specifications, Gas Lift Valve Specifications, Gas Lift Valve Specifications, Gas Lift Valve Specifications Alternative specifications, materials, sizes, and pressure ratings available on request.
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