| PDC 2003-B LP | Dec 31 |
| PDC 2003-C LP | Dec 31 |
| PDC 2003-D LP | Dec 31 |
| PDC 2003 DRILLING PROGRAM I | |
| PDC 2004-2006 DRILLING PROGRAM | Dec 31 |
| PDC 2004-A Limited Partnership | Dec 31 |
| PDC 2004-B Limited Partnership | Dec 31 |
| PDC 2004-C Limited Partnership | Dec 31 |
| PDC 2004-D Limited Partnership | Dec 31 |
| PDC 2005-A Limited Partnership | Dec 31 |
| PDC 2005-B Limited Partnership | Dec 31 |
| Permex Petroleum Corp | Sep 30 |
| PETROTEQ ENERGY INC. | Aug 31 |
| PIONEER ENERGY SERVICES LLC | Dec 31 |
| POTOMAC ENERGY CORP | Dec 31 |
| Precision Diversified Oilfield Services Corp. | Dec 31 |
| Precision Drilling Co LP | Dec 31 |
| PRIDE INTERNATIONAL INC | Dec 31 |
| QGOG Constellation S.A. | |
| R&B FALCON CORP | Dec 31 |
| RBF FINANCE CO | Dec 31 |
| READING & BATES CORP | Dec 31 |
| Reef 2007-2009 Drilling Program | Dec 31 |
| Reef Global Energy IX, L.P. | Dec 31 |
| Reef Global Energy Ventures II | Dec 31 |
| Reef Global Energy VIII, L.P. | Dec 31 |
| Reef Global Energy VII, L.P. | Dec 31 |
| Reef Global Energy VI, L.P. | Dec 31 |
| Reef Oil & Gas Drilling & Income Fund, L.P. | Dec 31 |
| REMINE ROBERT L | Dec 31 |
| REUNION RESOURCES CO | Dec 31 |
| RICHFIELD OIL & GAS Co | Dec 31 |
| Rockies Region Private LP | Dec 31 |
| Rowan Companies, Inc. | Dec 31 |
| ROWAN COMPANIES Ltd | Dec 31 |
| ROWAN COMPANIES PLC | Dec 31 |
| Samson Oil & Gas LTD | Jun 30 |
| SANCHEZ O BRIEN 1981-A DRILLING CO | Dec 31 |
| SANDER TRUCKING CO INC | Dec 31 |
| Seadrill Ltd/Old/ | Dec 31 |
| Seadrill Partners LLC | Dec 31 |
| SEAHAWK DRILLING, INC. | Dec 31 |
| SECURITY FIRST LIFE SEPARATE ACCOUNT A | Dec 31 |
| SEDCO INC | Jun 30 |
| Siberian Energy Group Inc. | Dec 31 |
| SMEDVIG ASA | |
| Songa Offshore SE | Dec 31 |
| SOUTHWEST DEVELOPMENTAL DRILLING FUND 91-A LP | Dec 31 |
| SOUTHWEST DEVELOPMENTAL DRILLING FUND 92-A LP | Dec 31 |
| STATMON TECHNOLOGIES CORP | Mar 31 |
| STERLING DRILLING FUND 1983-1 | Dec 31 |
| STERLING DRILLING FUND 1983-2 | Dec 31 |
| STERLING GAS DRILLING FUND 1981 | Dec 31 |
| STERLING GAS DRILLING FUND 1982 | Dec 31 |
| Sterling Oil & Gas CO | Feb 28 |
| TARGET OILFIELD PIPE & SUPPLY CO | Dec 31 |
| TERRACO ENERGY CORP | Jul 31 |
| TETON ENERGY CORP | Dec 31 |
| TEXLAND DRILLING PROGRAM 1981 | Dec 31 |
| THREE FORKS, INC. | Dec 31 |
| Titan Energy, LLC | Dec 31 |
| TMBR SHARP DRILLING INC | Mar 31 |
| TODCO | Dec 31 |
| TORREY CHARLES P JR | Dec 31 |
| TRANSOCEAN ASA | Dec 31 |
| TRANSOCEAN INTERNATIONAL Ltd | Dec 31 |
| TRANSOCEAN OFFSHORE INC | Dec 31 |
| Transocean Partners LLC | Dec 31 |
| TRINITY INDUSTRIES LEASING CO | Mar 31 |
| TUCKER DRILLING CO INC | Mar 31 |
| TWOADAY OIL INC | Dec 31 |
| UNION DRILLING INC | Dec 31 |
| UNIT DRILLING & EXPLORATION CO | Dec 31 |
| UNITED STATES CRUDE INTERNATIONAL INC | Dec 31 |
| UNITED TRANS WESTERN INC | Dec 31 |
| VAN HARBOUR INTERNATIONAL INC | Apr 30 |
| Vantage Drilling CO | Dec 31 |
| VANTAGE DRILLING INTERNATIONAL | Dec 31 |
| VINEYARD OIL & GAS CO | Dec 31 |
| Virtus Oil & Gas Corp. | Nov 30 |
| WALKING STICK OIL & GAS CORP | Dec 31 |
| WARD LAKE DRILLING INC | Dec 31 |
| WEATHERFORD INTERNATIONAL LTD | Dec 31 |
| Weatherford International Ltd./Switzerland | Dec 31 |
| Western Energy Services Corp. | Dec 31 |
| WESTLAND RESOURCES, CORP. | Jul 31 |
| Westpoint Energy, Inc. | Mar 31 |
| WHITMIRE DOZER SERVICE INC | Dec 31 |
| WOLVERINE ENERGY 1997-1998 DEVELOPMENT PROGRAM | Dec 31 |