PT Chevron Pacific Indonesia (CPI) operates 90 fields in Sumatra with two major fields, Duri and Minas. Additionally CPI manages Dumai Wharf, the final terminal for oil transport.
The majority of CPI's Sumatran production in 2011 came from fields in the Rokan production sharing contract (PSC). Duri, the largest field, has been using steamflooding technology to improve production since 1985 and is one of the world's largest steamflood developments. In 2011, steam injection was deployed in 80 percent of the field.
We continue to implement projects designed to sustain production, increase recovery and improve reliability from existing reservoirs. In Area 1 through Area 12 of the Duri Field, 238 production wells and 78 steam injection and observation wells were drilled during 2013. Construction progressed on the Duri Development Area 13 expansion project during 2013. First production from Area13 occurred in second-half 2013, and ramp-up of production is expected through 2016.
We also manage extensive waterflood operations at the Minas Field. In the Minas Field, 41 production wells were drilled during 2013, and efforts continued to optimize the waterflood program to sustain field production. A pilot project for a chemical injection process that could further improve recoverability of light oil in Minas and surrounding fields was completed in 2013. Further evaluation of the project results is planned during 2014.
During 2013, three exploration wells were drilled on the island of Sumatra, with one discovery. The two exploration wells drilled in 2012 were evaluated and determined to be uneconomic. Further exploration and appraisal drilling is planned for 2014.
Crude oil from Chevron’s Sumatra production fields is transported to Dumai through a pipeline system extending some 550 km, and reaches a tank farm with a storage capacity of 5.1 million barrels. From the tank farm, oil is pumped to the Pertamina refinery and oil tankers at Dumai Wharf. Using high-capacity pumps, Dumai Wharf can load four tankers simultaneously.