BUZZ-Bowleven: Payday nears as key farm-out pact formalised
** The oil and gas explorer's shares up as much as 10.3 pct after it said a farm-out agreement in Cameroon was gazetted
** Co is set to receive initial cash proceeds of about $170 million from partners Lukoil and NewAge
** Stock up on heavy volumes with nearly half its full day average traded in the first half hour
** Biggest gainer on the FTSE AIM Oil and Gas Index (abhiram.nandakumar.thomsonreuters.com@reuters.net)