Customer Challenges
- The client was looking to identify a safe and efficient solution to perform descaling clean up operations in sour gas wells in order to remediate well accessibility and maximize production potential of their wells
- High levels of H2 S were expected during descaling operations where eliminating unnecessary exposure to well site personnel were of utmost importance
- Emphasis was placed on eliminating NORM risk during the clean up operations
- Expro were approach to provide a closed loop milling returns solution that minimized any potential risks of shutting down with coil tubing in the well whilst milling and circulating solids
- Returns were required to be handled in an enclosed system to ensure that any dissolved H2 S in water could be treated prior to disposal
Expro Excellence
- Well testing equipment was equipped with Automatic Back Pressure (ABP) chokes to reduce personnel exposure to H2 S and NORMs
- The deployment of the 4-Phase Intelligent Test Separator in tandem with a highly experienced crew in solids management and high H2 S environments at the well site were key to the client and Expro’s success
- A H2 S treatment solution was implemented incorporating a surge tank recycling loop to ensure that the dissolved H2 S in the water was adequately treated prior to disposal
- Enclosed Solids Handling Tank (ESHT) was deployed to provide closed loop solids flushing capabilities to limit exposure of hazardous substances to the surrounding environment and personnel
- Successfully managed to recover 2,670kg of scale with no HSE incidents nor release of H2 S into the environment
Value to Client
- The deployment 4-Phase Intelligent Separator and it’s proprietary functionalities such as it’s intelligent control hierarchy and online solids removal system translated into:
- Increased process safety and reduction in operating personnel in a high H2 S environment by enabling the automatic and remote control of the separator
- Decreased process upset and loss of containment risk through online, real-time optimization of the separation efficiency whilst ensuring that accurate production data was obtained to optimize long-term production
- Expro’s bespoke solution resulted in maximizing client work over efficiency by eliminating shutdowns during the descaling operations and led to an increase in overall safety on location
Contact
For further information, please contact WFM@expro.com.
