In a statement this morning, Baraka said an initial review of wireline logs, pressure and side wall core data indicated a 3m hydrocarbon zone in very low porosity limestone at a depth of 3650m in the Aptian sandstone target. This corresponds to a show on the mud logs.

The joint venture expects to receive the full results of the current wireline logging program in the next week.

Baraka said after the partners have assessed the results and their implication for the prospectivity of Block 20, they will hold a meet early next quarter to decide on the way forward.

The land-based drilling campaign is the first in the country in recent years.

Following Heron-1, CNPCIM will use the rig to drill an exploration well in neighbouring Coastal Block 12, in which Baraka does not have an interest.

Interests in Heron-1 are CNPC (65%) and Baraka (35%).