In the first half of 2026, BP and its co-venturers spent about $268 million in operating expenditure and about $733 million in capital expenditure on ACG activities, APA-Economics reports, citing BP's report on its operations in Azerbaijan for the past year.
During the first half, the 4D high-definition ocean bottom node seismic programme on ACG progressed with the completion of processing of the data acquired in 2025.
The multi-well subsea intervention campaign operations in the Deepwater Gunashli area also continued, with five subsea intervention jobs completed and activities currently underway on the sixth well.
During the first half of the year, the Central Azeri Gas Expansion (CAGE) project activities continued as planned. Key upgrades to the four existing gas injection compressors on the platform were completed including the replacement of compressor cartridges and auxiliaries. These works were delivered safely and ahead of schedule during live platform operations, without the need for a plant outage or additional flaring.
The CAGE project is designed to increase gas reinjection capacity on the Central Azeri platform to help maximize recovery from the existing wells. It commenced in January 2026 and is expected to be completed in September this year, following the delivery of the remaining modifications during the planned maintenance programme on Central Azeri and the completion of all post-modification activities.
During the first half of 2026, ACG continued to safely and reliably deliver stable production. Total ACG production for the first half of 2026 was on average about 323,000 barrels per day (b/d) (about 59 million barrels or 8 million tonnes in total) from the Chirag (19,300 b/d), Central Azeri (88,000 b/d), West Azeri (73,300 b/d), East Azeri (45,000 b/d), Deepwater Gunashli (47,000 b/d), West Chirag (24,000 b/d) and ACE (26,400 b/d) platforms.At the end of June 2026, 150 oil wells were producing, while 51 were used for water and 11 for gas injection.
In the first half of 2026, ACG drilled and completed seven oil producer, three water injector and two gas injector wells.
One of the oil producer wells - C44, drilled from the West Azeri platform, marked a significant milestone for ACG as the first multilateral well ever drilled in the Caspian. The well was delivered safely and 30 days ahead of plan, with both drilling and completion phases significantly outperforming timelines.
The successful application of multilateral well technology in ACG represents an important step forward in efforts to maximize recovery and sustain long-term production from this mature asset.
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