Enhance production and improve completion integrity in the most extreme environment
Gas lift involves injecting gas through a well’s tubing-casing annulus. Injected gas aerates the fluid to reduce its density; the formation pressure is then able to lift the fluid column and force it up the wellbore. Depending on the well’s producing characteristics, and the specific characteristics of the gas-lift equipment, gas may be injected continuously or intermittently.
Gas lift system for deepwater applications. Weatherford’s UltraLift deepwater gas lift system combines a new, API V-1 validated gas lift valve with proven components from the company’s DVX line.
The UltraLift RH-2XHP gas lift valve injects gas deeper into the wellbore and maximizes production in deepwater wells with high-pressure injection systems. Featuring dual-edge welded bellows that improve high-pressure reliability, the valve has a total dome-charge capability of 5,000 psi and a maximum operating pressure differential of 10,000 psi.
The RH-2XHP valve incorporates an integral reverse-flow check valve to maximize flow and prevent the erosional effects of long operation and unloading. The check valve has undergone extensive testing, is certified to API 19G2 V-1 standards, and is qualified to the TR2385 Norwegian standard for North Sea operation. It is performance-rated to 10,000 psi differential pressure at 300°F.
Finally, the system uses a DVX side-pocket mandrel with dual external valves that help to prevent corrosive well fluids from entering the casing annulus. The mandrel design follows the industry-standard pocket configuration, so that operators may substitute any gas lift valves and latches with a 1-in. or 1.5-in. OD. For additional customization, grooves can be machined onto the side of the mandrel, to accommodate multiple control lines without increasing the mandrel OD.
One of the system’s advantages is the dual-injection-flow design. During normal gas lift operations, well fluids may flow back into the casing annulus, causing erosion. With several independent barriers—the internal check valve in the RH-2HXP valve, the two DVX QS check valves, and the dual external valves attached to the DVX mandrel—the system protects the casing annulus from well fluids, even when the gas lift valve is removed via wireline.
Overall, the system provides operators with a premium gas lift package that offers reliable operation and dual-barrier protection to enhance well integrity. It is well suited for deployment to depths up to 18,000 ft and can be combined with chemical injection systems, control lines and gauges.
MINIMIZE RISK AND MAXIMIZE PROFITABILITY in ultrahigh-pressure lift applications.
In challenging environments where safety, efficiency, and reliability are especially critical, you can trust the Weatherford Ultra Lift gas-lift portfolio to deliver consistent, long-term performance for the highest level of completion integrity.
Valves designed to maximize gas passage and handle extreme pressures.
Mandrels with dual external check valves that provide barriers to enhance completion integrity during production and gas-lift servicing.
Complete solutions that have passed extensive testing and deliver field-proven results in the harshest conditions.
Rugged, dual-bellows construction
The unique design of the Ultra-HP valve enables reliable operation with dome pressures up to 5,000 psi (345 bar) and differential-submergence pressures up to 10,000 psi (689 bar).
DVX side-pocket mandrel
Tested and proven for use in severe well conditions—with a solid-body design and a unique, external, dual-check-valve system
Dual CV-2 DVX external check valves provide a true second barrier to prevent wellbore fluids from entering the casing annulus, which maintains completion integrity by protecting the casing string from high pressures and corrosive fluids.
Industry-standard pocket configuration accepts 1- and1 1/2-in. outside diameter (OD) gas-lift valves and latches.
Custom-designed grooves can be machined on the side of the mandrel to accommodate multiple control lines without increasing the mandrel OD.
Unloading of the casing annulus is not required after changing live gas-lift valves via wireline, which reduces production downtime.
Assembly can be configured to meet the highest API 19G1 V-1 certifications.
HE ULTIMATE CONFIGURATION for ultrahigh-pressure conditions.
When you combine THE ULTRA-HP GAS-LIFT VALVE with the proven Weatherford DVX SIDE-POCKET MANDREL, you’re well equipped to excel in the most severe offshore environments.
Ultra-HP gas-lift valve
Designed for ultrahigh-pressure injection systems to achieve deep points of injection and to maximize production
Average run life exceeds 100,000 cycles, per API 19G2 testing guidelines.
Aerodynamic design, based on computational flow dynamics (CFD) testing, provides maximum gas passage and erosion resistance.
Bellows-protection system, based on aerospace technology, prevents deformation under high differential pressures.
Dome-charge capability is 5,000 psi (345 bar).
Differential-submergence- pressure rating is10,000 psi (689 bar) at 300°F (149°C)
Reliable completion integrity
Dual, external check valves provide extra protection for the casing string against high pressures, hydrogen sulfide, carbon dioxide, and other hazards.
A RANGE OF TOP-PERFORMING VALVES for a variety of offshore well conditions.
As part of the comprehensive Weatherford offering of gas-lift products and solutions, the premium UltraLift portfolio offers a suite of wireline-retrievable gas-lift valves that have been flow-performance and erosion tested to deliver maximum production.
Each Ultra Lift valve incorporates our proven DVX check-valve design, which can be equipped with a modified-PTFE and metal-to-metal combination seal or with a strictly metal-to- metal seal. Both configurations have passed stringent API 19G2 and TR2385 testing standards for barrier certification in demanding environments.
RH-2 injection-pressure-operated valve
With a solid track record of operation in midrange operating conditions, this valve includes a conventional inverted- bellows design with hydraulic bellows protection for high- injection-pressure and high-injection-volume systems.
RDDK-2A shearable-orifice valve
This versatile tool functions as a dummy valve upon initial installation and then facilitates the completion test after being sheared open via annulus pressure. At the next predetermined pressure point, the fracture rod breaks, and the valve operates as an orifice valve.
RO-2HV orifice valve
Designed using the latest CFD software to maximize gas- passage capability and minimize erosion, this valve provides reliable, long-term operation under extreme conditions.
The assembly can be modified to the RV-2HV configuration, which is equipped with a Venturi-style nozzle to enhance flow stability in some applications.
Qualified for the world’s toughest DEEPWATER ENVIRONMENTS
The CV-2 DVX reverse-flow check-valve system has passed stringent
North Sea flow-erosion testing and meets sealing criteria for maximum well-containment capabilities per API 19G2 and guiding document TR2385.
A small package with A BIG RESPONSIBILITY
Even the tiny, aerodynamic darts of our DVX check valves have passed rigorous physical testing to enhance completion integrity.
As the world leader in gas-lift technology, we have a strong track record of developing and deploying vital deepwater gas-lift systems that span the life cycle of high-profile offshore wells—so you can be confident that your production assets are designed to perform to the highest standards.
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