Seplat Energy Plc has announced the successful commencement of gas production at its 300 million standard cubic feet per day (MMscfd) Assa North–Ohaji South (ANOH) gas project, marking a major milestone in Nigeria’s gas development drive.
The company said gas supply officially began on Friday, January 16, following the completion of the 11-kilometre Indorama gas export pipeline and the receipt of regulatory approval from the Nigerian Upstream Petroleum Regulatory Commission (NUPRC). Gas is now being delivered to Indorama Petrochemical under firm and interruptible gas sales agreements.
Chief Executive Officer of Seplat Energy, Roger Brown, described ANOH as the first among seven critical gas projects identified by the Federal Government to reach operational stage. He said the project is strategically important to Seplat, its joint venture partner Nigerian Gas Infrastructure Company (NGIC), and the country’s broader energy ambitions.
Brown noted that delivering the project required significant effort, particularly given the limited gas pipeline infrastructure in the onshore Niger Delta. He added that ANOH is Seplat’s third major onshore gas processing facility and lifts the joint venture’s total onshore gas processing capacity to more than 850 MMscfd.
According to him, the project will generate new revenue streams for Seplat, lower the company’s carbon intensity and support its target of reaching 200,000 barrels of oil equivalent per day by 2030.
He also said the plant would expand energy access by supporting power generation and the supply of cleaner cooking fuel to local communities.
Seplat explained that four upstream wells, which had been inactive since November 2025, were brought back on stream to enable gas flow.
Since start-up, wet gas production has stabilised at between 40 and 52 MMscfd, supplied directly to the Indorama Petrochemical Plant. Condensate output currently stands at about 2.0 to 2.5 thousand barrels of oil equivalent per day, with further increases expected as production ramps up.
The company also disclosed that preparations are ongoing to begin gas sales to Nigeria LNG (NLNG) under an interruptible offtake arrangement. This, it said, would help the plant scale production towards its full design capacity of 300 MMscfd. Meanwhile, construction of the OB3 pipeline export route by NGIC has resumed, with an updated completion timeline to be announced later.
The ANOH gas plant, developed by ANOH Gas Processing Company (AGPC), is an incorporated joint venture between Seplat Energy and NGIC. The facility comprises two gas processing trains of 150 MMscfd each, LPG recovery units, condensate stabilisation units, a 16-megawatt power plant and supporting infrastructure. It was designed to operate without routine gas flaring.
Located across the unitised OML 53 and OML 21 fields, the project is expected to unlock an estimated 4.6 trillion cubic feet of condensate-rich gas resources. Seplat’s share of proven and probable reserves in the field stood at about 0.8 trillion cubic feet as of the end of 2024. The company will earn revenue from wet gas supplied to the plant and dividends from its 50 percent equity stake in AGPC.
Seplat added that LPG from ANOH, combined with output from its Sapele and Bonny River Terminal facilities, will position the company as a major supplier of clean cooking fuel in Nigeria. The plant will also process previously flared gas from the Ohaji field, supporting Seplat’s onshore end-of-routine-flaring programme.
The company said the project was delivered without any recordable lost-time incidents over 17.5 million man-hours, underscoring its focus on safety throughout development and construction.
