The field now has 13 producer wells and one water disposal well operational, connected to the MOPU Ingenium and the FSO Rubicon Vantage.
Production at the field peaked at around 12,800 boe/d, above the originally forecast plateau rate, and had levelled off to 11,000 b/d earlier this year.
During 2015, KrisEnergy discovered oil with the Rayrai-1 well in the same concession, 2.25 km (1.4 mi) north of the 2009 Niramai oil discovery. Planning is under way for a potential satellite development to the Wassana complex.
Elsewhere in the Gulf of Thailand, the company finished development drilling on the Nong Yao oil field in G11/48 last November. Here there are 14 producer and two water disposal wells, a wellhead processing platform and a minimum facility wellhead platform, with crude exported via an FSO.
Early this year production had fallen back from its initial peak to 10,000 b/d.
Last year 52 wells were drilled on the offshore B8/32 and B9A oil and gas production complex, and one gas platform was installed and brought into production.
An increase in wireline zonal recompletions boosted output throughout 4Q, and last month oil production exceeded 30,000 b/d, the highest level since May 2014. Gas production too has increased to 148 MMcf/d, a rate last achieved in June 2012.
In November, the Thai authorities approved the production license for the Rossukon oil development in the KrisEnergy-operated G6/48 license. Currently a team is working on a 3D reservoir model prior to the joint-venture partners finalizing a development concept.
Elsewhere in the region, KrisEnergy has agreed to technical and fiscal terms with the Cambodian authorities for its Apsara oil field development in Cambodia’s offshore block A. The company is targeting first oil roughly 24 months after the final investment decision.
In October, front-end engineering and design was completed for the KrisEnergy-operated Lengo gas development in the Bulu PSC, offshore East Java. A prequalification process is under way prior to a tender for engineering, procurement, construction, and installation. Gas sales negotiations continue.
Offshore Vietnam, the company adds, a 575-sq km (222-sq mi) 3D seismic acquisition survey has been completed over block 120, while offshore Bangladesh, a 3,146-km (1,955-mi) 2D seismic campaign has finished on the SS-11 license.
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