The survey is the final operational step before drilling starts, said Tower.
MV Investigator will arrive in Cameroon between 15 November and 30 December, subject to permits and the requisite license extension being received from the Ministry of Mines prior to mobilisation.
The survey work will comprise three boreholes and is a prerequisite to drilling the NJOM-3 well.
Jeremy Asher, chairman and CEO, said: "We are looking forward to getting the site survey underway, which should be the final operational step before commencing drilling operations at Njonji.
“We are still awaiting the formal extension from the Ministry, but we are confident that this will be in place in good time for the survey."