Cleansorb has been hired to help a major operator to enhance recovery from a maturing field offshore UK.

As part of field redevelopment, effective drilling damage removal in new water injector wells is critical to achieving target injection rates without fracturing the reservoir.

Openhole injector wells with sand screens are being treated with ORCA for WBM to remove water-based mud drilling damage. The operator is aiming to extend the life of this 20-year old field for an additional 20 years or more with these injection and associated production wells, the company explained.

Already, six injector wells have been treated with ORCA for WBM to thoroughly remove carbonate/polymer DIF filter cake from the reservoir wellbore face before starting water injection.

Upon starting water injection, each of the six ORCA treated injector wells have hit their respective target injection rates at well below formation fracture pressure.

The ORCA for WBM mud damage removal treatments carried out on these injector wells offshore UK are achieving one of the precise benefits we developed the ORCA treatment line to achieve: maximizing drilling damage removal to improve injectivity in injection wells, especially where matrix injection is required,” said Ian Mckay, director & co-founder of Cleansorb.

“As with all of our well treatment formulations, ORCA improves well productivity with minimal risk to personnel, the environment and equipment. This ongoing offshore UK treatment programme is a perfect example, providing further evidence that this field-proven technology performs reliably, boosting well performance, safely and cost-effectively.”

Two more injector wells on this field redevelopment are scheduled for treatment in 2018, Cleansorb added.





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