Union Oil and Gas Group (UOGG) acquired control of 80% of Hydrocarbon Exploration Peru Ltd. (HEPL), which owns Block 183 onshore Peru in the Marañon Basin, UOGG said May 26.

UOGG now has the principal role in all technical decisions regarding HEPL.

Block 183 contains up to 2.2 Tcf of recoverable potential gas reserves. It likely contains C5 condensates. It has two oil and gas prospects in anticlines associated with the Sarayaquillo sandstones (Chipurana and Alfaro) in the basin.

The block covers 396,826 hectares, has good transport connections and is located next to two oil fields and one gas field in adjacent blocks.

Marañón Basin has produced oil and gas since the 1940s, close to the border of the Ucayali Basin.

UOGG is a subsidiary of U.K.-based investment holding company Union Group. HEPL is also based in the U.K.