Sanchez Energy Provides Eagle Ford Shale Operations Update; Proved Reserves Increase 125%

Sanchez Energy Corporation SN, today provided a reserves, drilling, and production update on the Company's activities in the Eagle Ford Shale, where it has approximately 95,000 net acres. Reserves Sanchez Energy has announced that proved reserves increased by 125%, reaching 15.0 million barrels of oil equivalent ("MMBOE") at June 30, 2012, up from 6.7 MMBOE at December 31, 2011. 87% of Sanchez Energy's proved reserves at June 30, 2012 were oil-weighted, and 91% of the Company's proved reserves were classified as proved undeveloped at June 30, 2012 as compared to 86% at December 31, 2011. The present value of the future net revenues ("PV10") of Sanchez Energy's proved reserves at June 30, 2012 was $308.9 million as compared to $152.4 million at December 31, 2011. Additionally, Sanchez Energy's mid-year 2012 reserve report identified 9.8 MMBOE of probable reserves and 4.0 MMBOE of possible reserves, for total 3P reserves of 28.8 MMBOE. The majority of Sanchez Energy's 3P reserves are located within its 9,500 net acres in the Palmetto area in Gonzales County, Texas. The Company's estimated reserves, including the estimated probable and possible reserves, were prepared by its independent reservoir engineering firm, Ryder Scott & Company, L.P. Sanchez Energy has internally estimated that it has between 800 and 1,200 net unrisked Eagle Ford drilling locations across its 95,000 net acre position (using a range of 120 acre to 80 acre well spacing) targeting a total resource potential of approximately 250 to 380 MMBOE. Second Quarter 2012 Exit Production Rate and Operational Update Sanchez Energy's estimated net production exit rate at June 30, 2012 was approximately 1,200 barrels of oil equivalent ("BOE") per day, of which approximately 90% was oil, which represents a 50% increase over March 31, 2012 estimated net production exit rate of 800 BOE/day. At June 30, 2012, the Company had five wells waiting on completion. There are two rigs currently running, one in the Palmetto area and one in the Marquis area, with an additional rig to be added to the Palmetto area in August. Production is expected to continue growing in the third and fourth quarters as the Company executes the remainder of its 2012 drilling plan and adds the five wells currently waiting on first production. Sanchez Energy reaffirms its 2012 production exit rate guidance range of 4,000 to 5,000 BOE/day.