Mubadala has plugged and abandoned the outpost Nong Yao 7/Nong Yao 7ST in G11/48, located in between the southern Pattani Trough and northwest of Malay Basin, on 15 May 2018, with thin layers of oil and gas. The wells located around 7 km southwest of Nong Yao 1 discovery well, probably targeting the Miocene fluvial reservoirs.     Spudded on 5 May 2018, Nong Yao 7 was drilled to a total depth of 2,518 m, using âEnsco-115â J/U and completed within 7 days. The well encountered a 1.5 m of oil column. The Nong Yao 7ST1 was subsequently kicked off on 11 May 2018 and was drilled to a total depth of 2,173 m within 5 days. The well hit 7.6 m of oil pay and 2.4 m of gas pay, probably interpreted from logs.     The previous exploration drilling in the area were the outpost wells Nong Yao 6/Nong Yao-6ST, spudded on 23 April 2018, using âEnsco-115â J/U, with a TD of 1,660 m, and completed on 3 May 2018, with poor oil shows/dry. The wells may have targeted Lower-Middle Miocene fluvial sandstones, analogues to the Nong Yao field main reservoirs.  The locations of these wells may have been refined using the 460 sq km of 3D seismic survey, conducted in November 2017. The seismic data has also been integrated with the existing geological model for the identification of drilling locations, and additional prospects and leads in the concession.    The Nong Yao is currently producing under an improved recovery regime. In 2017, six infill wells were put on stream to increase the gross production in the field. On average, the field has produced 8,613 b/d of oil in 2017.  Interest in G11/48 concession is divided between Mubadala Petroleum (Thailand) Limited (75%, Operator) and Kris Energy (25%).    Background information    The Nong Yao field was discovered by Nong Yao 1, drilled by Pearl Oil in 2009. Oil was found in the Miocene sandstone in the Pattani Group II/III units of fluvial with lacustrine influence environment. The Nong Yao 1 well was drilled to a TD of 1,545m and presumably targeting similar Miocene sandstones in the Pattani II/III units. The well was plugged and abandoned as an oil discovery on 20 June 2009.     The discovery was appraised by Nong Yao-2, Nong Yao-2ST1, Nong Yao-3, Nong Yao-4 and Nong Yao-4ST1 wells in the shallow water block in late July 2010. All of them were plugged and abandoned with oil and gas.     The G11/48 concession also consists of other fields such as Angun 1 (appraising), Boondarik 1 (discovery), Bua Luang 1 (discovery), Mantana 1 (discovery).    Pearl Oil (Thailand) Ltd and partners was awarded the G11/48 concession on 11 December 2006. The agreement of the oil and gas exploration contract was officially signed on 8 December 2006 with the Thailand Department of Mineral fuels (DMF). The G11/48 concession covers a surface area of 13,600 sq km.     On 14 April 2009 UBG announced that they had entered Sale and Purchase Agreement (SPA) to dispose UBGPT with Pearl Oil Siam (POS) which affecting 6 petroleum concession, G1/48, G2/48 G3/48, G6/48, G10/48 and G11/48. UBG acquired Pearl Thailand Holding Ltd (PTH), a wholly-owned subsidiary of Pearl Energy in December 2009 and the acquisition was completed immediately after the signing of the SPA. PTH was renamed UBG Petroleum (Thailand) Limited (UBGPT). The acquisition was intended to be the companyâs debut into the oil and gas business. Due to uncertain risk played by nature in this industry, the investment posed treats to the companyâs resources. With the companyâs best interest and to protect its shareholders, UBG finally decided to withdraw its investment from oil and gas business at a minimal loss.UBG said, the sale proceeds will allow the company to refocus its strategy for future investment in more favorable environment for the benefit of the company and its shareholders.    In January 2010, Kris Energy completed the sale and purchase agreement to buy over 25% working interest in block G10/48 and G11/48 from Tana Resources, a wholly owned subsidiary of Tana Exploration LLC, a company based in Houston. After the transaction completed, interest in G11/48 are divided between Pearl Oil (Thailand) Limited (75%, Operator) and Kris Energy (25%).
Mubadala has plugged and abandoned the outpost Nong Yao 7/Nong Yao 7ST in G11/48,with thin layers of oil and gas. 