(ShareCast News) - AIM-listed oil and gas exploration group Bowleven said drilling operations have begun on the Moambe exploration well onshore Cameroon.The Moambe well is the second in a two-well programme located just over two kilometres east of the first well, Zingana, and will be drilled to an estimated depth of around 1,620 metres.The Africa-focused company said further petrophysical evaluation on the Zingana discovery well is continuing and as planned the well has been suspended to enable future re-entry and testing.In addition, it said that as previously announced, the intention is to drill, log and evaluate both wells before determining any testing plan.Further updates on drilling activities will be made in due course, Bowleven said.At 1443 BST, shares in the company were up 2.1% at 24.50p.