Atlas Resources Partners LP, Philadelphia, will acquire 250 bcf equivalent of proved reserves in the Barnett shale in the Fort Worth basin from Titan Operating LLC, private Fort Worth independent, for $184 million in ARP units.

BG Group is preparing to spud its sixth wildcat offshore southern Tanzania after reporting a fifth gas discovery at the Mzia-1 exploratory well on Block 1.

The Anadarko Petroleum Corp. group has added 7 to 20+ tcf of recoverable gas to its discovered trove offshore Mozambique at an exploratory success nearly 20 miles northwest of its Prosperidade complex.

Groups led by Statoil ASA plan to further explore the Barents Sea offshore Norway in the vicinity of the Skrugard and Havis discoveries while working toward a late 2018 production start for the Johann Sverdrup discovery in the North Sea west of Stavanger.

BP Exploration & Production Inc. let a front-end engineering design contract to Technip for a spar hull and mooring systems for the second phase of development of deepwater Mad Dog oil and gas field in the Gulf of Mexico.

The US Geological Survey estimates that the world’s undiscovered, technically recoverable conventional oil and gas resources outside the US total 565 billion bbl of oil, 5,606 tcf of natural gas, and 167 billion bbl of natural gas liquids, it said on Apr. 18.

Resolute Energy Corp. and the Navajo Nation Oil & Gas Co. have acquired nonoperated assets in giant Greater Aneth oil field in the Paradox basin of Utah from Denbury Resources Inc., Plano, Tex., for $75 million.

Hilcorp Alaska LLC signed a definitive agreement to buy Marathon Oil Corp.’s assets in Alaska’s Cook Inlet, subject to required approvals, by the fall of 2012.

US natural gas reserves reached record levels in 2011 as producers found and produced more gas than was consumed, the American Gas Association said.

Buccaneer Energy Ltd., Sydney, will acquire a 25% working interest in and become operator of the Cosmopolitan project in southern Cook Inlet offshore Alaska.

Shell Gulf of Mexico Inc. and Nexen Inc. have demonstrated a contingent recoverable resource of 215 million bbl of oil equivalent in the Jurassic Norphlet formation in the northeast fault block of the Appomattox structure in the deepwater Gulf of Mexico, where they are conducting further exploration and appraisal activity and evaluating development concepts.