Integrity CCS subsurface safety valve

Engineered, tested, and qualified to function effectively even at extremely low temperatures

Overview

Designed to survive extremely cold temperatures

When actuated from surface—either manually or through an automated control system—Integrity™ CCS subsurface safety valves slam shut to secure the well. Part of the family of Integrity subsurface safety valves, these valves have been rigorously tested and qualified far beyond the requirements of API Spec 14A.

Rated to 15,000 psi [103,420 kPa]

Operating temperatures down to –31 degF [–35 degC]
Survivability down to –109.3 degF [–78.5 degC], the CO₂ sublimation point

Validated to API Spec 14A V1-R

Tubing size: 5.5 in

Cutaway view of Integrity CCS subsurface safety valve showing its internals.

Applications

These valves are set at shallow depths in CCS monitoring or injection wells (Class VI wells, used for geologic sequestration of CO₂).

Benefits

Preserve the integrity of your well

Integrity CCS safety valves serve as the ultimate defense in the complex process of carbon capture, utilization, and sequestration (CCUS), safeguarding operations and personnel in the event of compromised well integrity.

They are specifically designed to perform reliably at low temperatures and prevent the uncontrolled release of CO₂, which would increase emissions and pose significant HSE risk by rapidly depleting oxygen levels in the vicinity. The valves effectively mitigate these risks; it is advisable to pair them with monitoring and alarms.

Features

The valves are qualified for CO₂ applications with patented seal technology and resilient materials. Stringent testing and qualification processes ensure valve performance in extremely cold conditions, especially during emergency closures.

The valve actuator incorporates multizone seal technology to provide a dynamic seal solution that surpasses traditional seal systems in reliability. Designed for high performance and longevity, the actuator requires hydraulic pressure for operation, which simplifies control system requirements. This combination of advanced technology and thoughtful design ensures the effectiveness and dependability of Integrity CCS safety valves.

FAQs

How are the valves qualified?

The valves are validated to API Spec 14A V1-R, but their performance exceeds the certification requirements.

Flapper leakage: API Spec 14A allows leakage up to 5 ft³/min. The acceptance criterion for Integrity CCS safety valve flapper systems is bubble-tight performance.

Hydraulic actuator integrity: API Spec 14A allows up to 5% drop in applied hydraulic pressure; for 10,000-psi hydraulic pressure, the acceptable leakage is 500 psi. Integrity CCS safety valve actuators allow <1% drop, as confirmed by rigorous tests.

Slam closure: The valve's flapper system has been successfully slam tested at high flow rates that exceed the Annex K requirements of API Spec 14A.