Exploration & Production | Capital Markets | Private Equity Activity
Antero Ups Marcellus, Utica Proved Developed Reserves by 117%
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Antero Resources has reported that proved reserves at December 31, 2013 were 7.6 Tcfe, a 78% increase compared to proved reserves at December 31, 2012, in each case assuming ethane rejection.
Highlights:
- Proved reserves increased by 78% to 7.6 Tcfe and 3P reserves increased by 62% to 35.0 Tcfe at year-end 2013
- Proved developed reserves increased by 117% to 2.0 Tcfe at year-end 2013
- Replaced 1,857% of estimated production in 2013
- Achieved all-in finding and development costs of $0.58 per proved Mcfe during 2013
- Increased proved reserves pre-tax PV10 by 133% to $7.0 billion, including hedges
Proved, probable and possible reserves at year-end 2013 totaled 35.0 Tcfe, which represents a 62% increase compared to last year, assuming ethane rejection. Antero's December 31, 2013 proved and 3P reserves exclude 271 and 1,399 million barrels of ethane, respectively, which are not recovered in the Securities and Exchange Commission price case due to the relationship between assumed ethane and methane prices at year-end 2013.
Antero replaced 1,857% of estimated production in 2013 from all sources including performance and price revisions. Finding and development costs for proved reserve additions from all sources including costs incurred for drilling capital, acquisitions, leasehold additions and all price and performance revisions averaged $0.58 per Mcfe, based on preliminary unaudited capital expenditure amounts for 2013. Drill-bit only finding and development costs averaged $0.45 per Mcfe for 2013. Antero's proved developed reserve additions totaled 1,281 Bcfe on $1.6 billion of drilling capital for a development cost of $1.25 per Mcfe in 2013. The Company's reserve life of its proved reserves, based on estimated 2013 production, is approximately 40 years.
Proved Reserves
Proved reserves increased by 78% to 7.6 Tcfe as of December 31, 2013. The Marcellus Shale accounted for 95% of Antero's proved reserve volumes at December 31, 2013 and the Utica Shale accounted for the remaining 5%. Also at year-end 2013, 88% of Antero's proved reserves by volume were natural gas, 11% were natural gas liquids and 1% was oil. As of December 31, 2013, 23% of Antero's 450,000 net acres of leasehold in the Marcellus and Utica was classified as proved. Based on Antero's successful drilling results to date, as well as those of other operators in the vicinity of Antero's leasehold, the Company believes that a substantial portion of its Marcellus and Utica Shale acreage will be added to proved reserves over time as more wells are drilled.
Antero added 3.7 Tcfe of proved reserves in 2013 primarily in the Marcellus Shale. NGLs and oil increased by 98 million barrels and 7 million barrels, respectively, due to Antero's 2013 drilling program targeting liquids-rich locations in the Marcellus and Utica Shales. Negative performance revisions of 157 Bcfe of proved reserves were due to the reclassification of 65 wells, or 374 Bcfe, to the probable category due to the SEC 5-year development rule partly offset by improved Marcellus well performance from SSL completions.
Proved developed reserves increased 117% from year-end 2012 to over 2.0 Tcfe at December 31, 2013. The Company added 113 Marcellus wells to proved developed reserves in 2013. These wells had an average estimated ultimate recovery of 10.6 Bcfe and an average lateral length of 7,308 feet. During 2013, Antero placed on line 26 Marcellus wells using SSL completions with encouraging results. Based on these results, Antero has increased its EUR per 1,000 feet of lateral by 18% to 1.73 Bcf for 1,768 gross SSL undeveloped 3P Marcellus locations out of the 3,067 total gross undeveloped 3P Marcellus locations, or 58%. Included in the gross SSL undeveloped 3P Marcellus locations are 91 gross SSL locations categorized as proved undeveloped out of the 665 total gross proved undeveloped Marcellus locations, or 14%. Antero has recently decided to complete virtually all wells in 2014 with SSL and expects further increases to the portion of gross undeveloped 3P Marcellus locations that assume SSL completions.
Antero added 11 Utica wells to the proved developed reserves category in 2013 consisting of 2 rich gas (1100-1200 BTU), 4 highly-rich gas (1200 to 1250 BTU) and 5 highly-rich/condensate (1250 to 1300 BTU) wells. The wells located in the rich gas and highly-rich gas regimes had an average EUR of 18.8 Bcfe (15% liquids) and 20.5 Bcfe (23% liquids), respectively, normalized to a 7,000' lateral. These EURs are consistent with previous estimates. Additionally, the wells located in the highly-rich/condensate regime had an average EUR of 11.3 Bcfe (32% liquids), normalized to a 7,000' lateral, representing an 18% decrease from previous estimates. This reduction was due to lower production performance from the highly-rich/condensate wells in 2013, which were producing in a high pressure (1100 psi) environment with no compression during the year.
The Company has provided single well economics assuming the increased Marcellus SSL type curve and the updated Utica type curves in the February 2014 corporate presentation which has been posted to its website at www.anteroresources.com.
Antero's estimate of drilling and development costs incurred during 2013, including drilling and completion of $1.6 billion and leasehold acquisition of $0.4 billion, is $2.0 billion. Assuming the $2.0 billion estimate of drilling and development costs, preliminary finding and development costs from all sources for 2013 averaged $0.58 per Mcfe. Three-year finding and development costs for Antero from all sources through 2013 averaged $0.55 per Mcfe, excluding the divested Arkoma and Piceance Basin properties. The 2013 capital costs are unaudited and preliminary. Audited and final results will be provided in Antero's Annual Report on Form 10-K for the year ended December 31, 2013.
The percentage of proved reserves classified as proved developed increased to 27% at December 31, 2013 as compared to 22% at year-end 2012. Proved undeveloped reserves increased by 67% as a result of the successful execution of Antero's Marcellus Shale development drilling plan. The 67% increase was driven by the addition of 195 gross proved undeveloped drilling locations and an increase in expected recoveries in the Marcellus Shale for 91 gross proved undeveloped locations based on SSL completions.
Under SEC reporting rules, proved undeveloped reserves are limited to reserves that are planned to be developed in the next five years. Antero's 5.6 Tcfe of proved undeveloped reserves will require an estimated $5.3 billion of development capital over the next five years, resulting in an estimated average development cost for proved undeveloped reserves of $0.95 per Mcfe.
SEC prices for reserves calculated as of December 31, 2013 averaged $87.00 per Bbl for oil and $3.65 per MMBtu for gas, which represent the benchmark Appalachian Basin oil and natural gas price. Using SEC prices adjusted for energy content and quality, the pre-tax present value discounted at 10% ("pre-tax PV10") of the December 31, 2013 proved reserves was $6.0 billion, excluding the Company's natural gas and oil hedges. Including Antero's hedges as of December 31, 2013 and using SEC prices, the pre-tax PV10 value of proved reserves was $7.0 billion, a 133% increase over year-end 2012. The pre-tax PV10 value of proved developed reserves was $2.9 billion excluding hedges and $3.9 billion including current hedges.
Proved, Probable and Possible Reserves
Antero estimates that it had year-end 2013 3P reserves of 35.0 Tcfe, a 62% increase over year-end 2012 3P reserves of 21.6 Tcfe, in each case assuming ethane rejection. The 3P reserves contain 29.6 Tcf of natural gas, 811 million barrels of NGLs, excluding 1,339 million barrels of ethane, and 91 million barrels of oil. The Marcellus, Utica, and Upper Devonian Shale comprised 25.0 Tcfe, 5.8 Tcfe and 4.2 Tcfe of the 3P reserves, respectively. The 62% increase in 3P reserves was driven by the addition of 51,000 net acres in the Marcellus Shale in northern West Virginia and 28,000 net acres in the Utica Shale in southern Ohio and the implementation of SSL completions.
Importantly, 24.1 Tcfe of Antero's 25.0 Tcfe 3P reserves in the Marcellus, or 97%, was classified as proved and probable, reflecting the low risk nature of Antero's Marcellus reserves.
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