Tlou Energy said a seismic survey completed across the Lesedi and Mamba project areas in Botswana had generated "data of excellent quality".
Survey data was being integrated with existing data with a view to expanding the Lesedi and Mamba coal bed methane reserves and contingent resources, the company said.
Two new core-holes drilled at the Lesedi project, meanwhile, intersected gassy coals, it added.
Core samples were being analysed alongside seismic survey with initial results expected in early 2018
At 9:28am: (LON:TLOU) Tlou Energy Limited share price was -0.25p at 14.88p