THE WOODLANDS, Texas, April 2, 2013 /PRNewswire/ -- Newfield Exploration Company (NYSE: NFX) today announced a significant natural gas discovery on the Block SK 310 Production Sharing Contract (PSC) area, located 50 miles offshore Sarawak in approximately 250 feet of water. This is the Company's second pinnacle reef natural gas discovery in the region. The B-14 well encountered 1,800 feet of gross column and 1,585 feet of net natural gas pay in the main carbonate objective. A drill stem test was recently conducted, which confirmed commerciality of the reservoir. Newfield estimates that Gas Initially In Place (GIIP) ranges from 1.5 – 3.0 Tcf. Newfield operates Block SK 310 with a 30% interest. Partners Diamond Energy Sarawak, a wholly-owned subsidiary of Mitsubishi Corporation and PETRONAS Carigali, has 30% and 40% interests, respectively. The B-14 discovery is located less than three miles from Newfield's first pinnacle reef gas discovery, B-15, also located on Block SK 310 in approximately 250 feet of water. Recoverable reserves on this discovery are estimated at approximately 265 Bcf and will be developed in conjunction with the B-14 discovery. "This is the largest conventional exploratory success that Newfield has made in its 25-year history," said Lee K. Boothby, Newfield Chairman, President and CEO. "Recent amendments to gas terms in Malaysia make natural gas developments economically competitive with oil developments. We have multiple 'reef' prospects to test along trend, and additional drilling is expected to resume in the third quarter with the drilling of our B-17 prospect." Block SK 310 covers approximately 1.1 million acres. Newfield has identified additional prospects on the contract area with multi-Tcf of remaining gas resource potential. Newfield has committed to drill one remaining exploration well (B-17 prospect) on Block SK 310.