According to local reports in July 2018, state company ENAP has taken over operatorship and 99% interest of the Caupolican and Brotula blocks from the original operator, Greymouth Petroleumâs subsidiary PetroMagallanes, who is keeping the remaining 1% stake.  Caupolican (2,481 sq km) and Brotula (100 sq km) are situated in the Magallanes Basin and directly across from each other on the Strait of Magellan.  Both blocks were awarded to PetroMagallanes in July 2008. In Caupolican, the last well drilled by the company was Caupolican 2 NFW, which was suspended with unspecified hydrocarbon shows in October 2015. Meanwhile in Brotula block, Brotula TA-2 NFW was completed as a gas producer in July 2014.  Background Information    Caupolican and Brotula are located next to two of ENAPâs most active blocks in the country. Caupolican is adjacent to the Arenal block, while Brotula is situated next to Dorado-Riquelme block. Arenal block is the state companyâs best producer of unconventional gas in Chile, followed by Dorado-Riquelme. USGS study from 2016 estimated the potential resources of the Zona Glauconitica Formation in both areas to be over 8 Tscf.
ENAP has taken over operatorship and 99% interest of the Caupolican and Brotula blocks from the original operator, PetroMagallanes (->1%).