Petronas Carigali Drills Malaysia's Longest Well

PETRONAS Carigali Sdn Bhd, a wholly owned exploration and production arm of PETRONAS, has reached another milestone in Malaysia's oil and gas exploration history when it drilled the country's longest development well to date.

The Angsi A-28ST-1 well, drilled at the Angsi oil and gas field offshore Peninsular Malaysia, reached its total depth of 6,339 meters on 11 August, just 44 days after it was spudded on June 29.

This 80-degree extended reach drilling (ERD) well penetrated an oil reservoir, potentially containing 4.5 million barrels of oil, about 5.8 kilometers from the Angsi platform. The well will be completed as oil producing well before the end of this month.

The Angsi A-28ST-1 well is another testimony of PETRONAS' commitment towards enhancing exploration and production (E&P) processes and technology in its efforts to augment Malaysia's oil and gas reserves.

With the ERD capability, contractors would be able to reach and recover oil and gas from reservoirs located at a distance from an existing drilling platform without having to install another structure. This would significantly reduce E&P capital expenditures.

The Angsi field is an integrated oil and gas development project undertaken by PETRONAS Carigali and ExxonMobil Exploration and Production Malaysia Inc, with each company having 50 per cent equity interests. PETRONAS Carigali is the operator of the field.

The Angsi field is part of the Gas Production Sharing Contract awarded to PETRONAS Carigali and ExxonMobil in 1997. Developed in three phases, the field is now producing about 100,000 barrels of oil and 200 million standard cubic feet of gas per day.

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