Bowleven PLC, Edinburgh, will take a farmout from Admantine Energy Ltd. to earn a 50% equity interest in Block 11B in northwestern Kenya.

The US Bureau of Land Management’s Casper, Wyo., field office has released environmental assessments for three oil and gas projects in Converse County and a small part of Niobrara County and invited comment until Oct. 17.

The US Bureau of Land Management released a new environmental assessment for XTO Energy Inc.’s proposed Riverbend natural gas project and will accept public comments until Oct. 10.

Las Maracas field in Colombia’s Llanos basin is producing at more than 4,600 b/d of oil with minimal water including test output from the Las Maracas-4 well, said Petroamerica Oil Corp., Calgary, which has a 50% participating interest in the Los Ocarros block.

Lundin Petroleum AB, Stockholm, has spudded the Merawan Batu-1 exploratory well, the third well in the company’s 2012 Malaysian drilling campaign.

A group led by GeoGlobal Resources Inc., Calgary, has found promising rocks and gas shows at the Myra-1 wildcat in the Mediterranean offshore and will move the Noble Homer Ferrington semisubmersible to the Sara-1 wildcat location.

Hydrocarb Energy Corp., private Houston concern, has taken a farmout from Duma Energy Corp., Houston, to earn a 39% working interest in a group of exploratory blocks in northern Namibia.

Tethys Petroleum Ltd. has spudded an exploratory well in the North Ustyurt basin of Kazakhstan southeast of the company’s Doris oil and gas field.

Colombia’s Cepcolsa has spudded the La Casona-1 wildcat on the El Eden block in the Llanos basin of Colombia.

Coastal Energy Co., Houston, said it will shortly tie in production from the A-10 well in Songkhla A field in the Gulf of Thailand.

Dart Energy International Pte. Ltd., Singapore, plans to start work in mid to late 2013 on the 411 sq km Bontang Bengalon coalbed methane block in the central Kutei basin in East Kalimantan, Indonesia.

Americas Petrogas Inc., Calgary, has begun to production test the operated LTE.x-1 well on the Los Toldos II block in Argentina’s Neuquen basin after performing a five-stage hydraulic frac of the Vaca Muerta shale.

The US Bureau of Land Management is seeking comments on a proposal by Encana Oil & Gas to construct a 5-acre natural gas well pad in the Piceance basin 5 miles south of Rangely, Colo., BLM’s White River field office announced on Aug. 31.

Mesa Energy Holdings Inc., Dallas, has leased 1,525 net acres in Garfield and Major counties, Okla., bringing its total position to 3,245 net acres in the Mississippi lime play.