April 21, 2011 / 8:02 PM / in 7 years

FACTBOX- Major drillers active in PA's Marcellus Gas Shale

 NEW YORK, April 21 (Reuters) - Chesapeake Energy's (CHK.N) well blowout in the Marcellus Shale formation in Bradford County, Pennsylvania on Wednesday will heighten the controversy over the use of hydraulic fracturing by natural gas drillers.
 The accident in northeastern Pennsylvania has stoked an already fierce debate over a production method known as fracking - which releases gas trapped in shale formations by blasting a mix of water, sand and chemicals into the rock.
 Chesapeake is the largest permit holder for shale gas concessions in Pennsylvania and among the top producers. Other large players include Anadarko (APC.N), EOG Resources (EOG.N) and Chevron-owned (CVX.N) Atlas Energy Inc. (Figures below)
 Proponents say extracting shale gas through fracking will slash U.S. reliance on foreign oil and cut carbon emissions. Naysayers suspect it will pollute water supplies and create other environmental risks, especially if regulation is lax.
 President Barack Obama has made increasing natural gas use a cornerstone of his energy policy, in part due to huge reserves unlocked by fracking. Shale gas has risen from negligible in 2004 to 23 percent of U.S. natural gas production now.
 The Marcellus Shale formation accounted for 271.5 billion cubic of natural gas during the last six months of 2010 (1.5 bcf per day). Bradford County accounted for more than a fourth of the the state's shale gas output.
In 2010, U.S. shale gas production reached 4.87 Tcf (23 percent of total U.S. natural gas production), compared with 0.39 Tcf in 2000.
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 To see the a map of the Pennsylvania wells, click here:
 r.reuters.com/hak29r
 Breakingviews: A gift to green energy [ID:nN21197769]
  Take a Look: Future of shale gas      [ID:nN18229665]
  Reuters Insider: A Fracking Frack Up:
  link.reuters.com/qud29r
  Graphic on shale gas extraction :
  link.reuters.com/ryf98r
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 The following companies are most active in Marcellus Shale in Pennsylvania*: Company                         Permits    Wells   ATLAS RESOURCES LLC             352        247     RANGE RESOURCES APPALACHIA LLC  704        190     TALISMAN ENERGY USA INC         589        130   CHESAPEAKE APPALACHIA LLC      1229         87       CABOT OIL & GAS CORP            243         80       EAST RESOURCES MGMT LLC         149         36       CNX GAS CO LLC                  162         35       SNYDER BROS INC                  54         34       EQT PROD CO                     222         33       ENERGY CORP OF AMER              85         32       EAST RESOURCES INC               49         28       PHILLIPS EXPLORATION INC        114         26       ULTRA RESOURCES INC             271         26       ANADARKO E&P CO LP              253         24       EOG RESOURCES INC               277         22       SENECA RESOURCES CORP           175         20       CONSOL GAS CO                    94         13       WILLIAMS PRODUCTION APPALACHIA  106         12       EXCO RESOURCES PA INC           167         11       XTO ENERGY INC                   84         11       BLX INC                          20         10       REX ENERGY OPERATING CORP        84         10       SOUTHWESTERN ENERGY PROD CO      54          8       DOMINION TRANS INC                2          7       PA GEN ENERGY CO LLC            103          6       MDS ENERGY LTD                   16          5       CITRUS ENERGY CORP               23          4       JW OPERATING CO                  12          4       GUARDIAN EXPLORATION LLC          8          3       NOVUS OPERATING LLC              20          3       SM ENERGY CO                     16          3       ANTERO RESOURCES APALACHIAN      10          2       M & M ROYALTY LTD                 2          2       RICE DRILLING B LLC              25          2       SAMSON RES CO                    11          2       VISTA OPR INC                     2          2       WILLIAM MCINTIRE COAL OIL & GAS   5          2       ALPHA SHALE RES LP                6          1       ALTA OPR CO LLC                   2          1       DL RESOURCES INC                  1          1       FLATIRONS DEVELOPMENT LLC         2          1       GREAT OAK ENERGY INC              2          1       MARATHON OIL CO                   8          1       MIEKA LLC                         1          1       MTN V OIL & GAS INC               3          1       PDC MOUNTAINEER LLC               2          1       TANGLEWOOD EXPL LLC               8          1        *Source: Pennsylvania Department of Environmental Protection. (Reporting by Edward McAllister, Janet McGurty, Joshua Schneyer, and David Sheppard, Compiled by Janet McGurty; Editing by David Gregorio)   

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