BP completes subsea intervention campaign at Azeri-Chirag-Gunashli

BP has successfully completed a multi-well subsea intervention campaign at the Deepwater Gunashli area of the Azeri-Chirag-Gunashli (ACG) field in the Azerbaijani sector of the Caspian Sea, according to Report, BP's Vice President for Wells in Azerbaijan, Georgia and Türkiye Russell Morris said.

The campaign was completed safely and approximately one month ahead of schedule.

BP announced the launch of the campaign at Deepwater Gunashli in October last year. According to Morris, all planned objectives were achieved while complying with safety requirements.

The campaign targeted seven subsea wells that had previously been considered difficult to access using conventional intervention methods. By completing intervention activities on these wells, we were able to carry out efficient surveillance and identify opportunities for reservoir pressure management and production rate enhancement, helping unlock further potential in the field.

Morris said the campaign marked the first deployment of riserless light well intervention (RLWI) technology in BP's operations in the Caspian. To make this possible, the Khankendi subsea construction vessel was successfully converted into a light well intervention vessel (LWIV) within just a few months, an impressive achievement by the teams involved.

The system, positioned near the vessel's centerline, creates a protected vertical passage through the hull, allowing subsea equipment, remotely operated vehicles and intervention tools to be safely lowered directly to the seabed.

The operation was centered around Oceaneering's BORIS (Blue Ocean Riserless Intervention System), an advanced subsea mechanical wireline intervention system that enables access to subsea wells without the need for a conventional drilling riser.

Morris said that despite weighing approximately 50 tons, the BORIS system was successfully deployed on the vessel and maintained well control, pressure containment and full subsea control throughout the intervention operations while protecting multiple independent well barriers.

The project brought together the engineering, subsea technology, vessel operations, manufacturing, logistics and well services expertise of BP and key contractors, including Saipem, Oceaneering and SLB.

Morris said the project demonstrated new approaches to accessing and managing subsea infrastructure and would provide greater flexibility for future subsea interventions in the Caspian Sea.

He added that the project also demonstrated how advanced technology, collaboration and operational excellence can help maximize production from mature assets such as ACG in BP's Caspian, Central Asia and Türkiye (CCAT) region.