| ENEX OIL & GAS INCOME PROGRAM IV SERIES 1 LP | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM IV SERIES 2 L P | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM IV SERIES 3 L P | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM IV SERIES 4 L P | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM IV SERIES 6 LP | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM IV SERIES 7 LP | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM VI SERIES I L P | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM V SERIES 1 L P | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM V SERIES 2 LP | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM V SERIES 3 L P | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM V SERIES 4 LP | Dec 31 |
| ENEX OIL & GAS INCOME PROGRAM V SERIES 5 L P | Dec 31 |
| Ensco UK //OLD// | Dec 31 |
| ERICA | Apr 30 |
| Erin Energy Corp. | Dec 31 |
| FALCON DRILLING CO INC | Dec 31 |
| Fortem Resources Inc. | Feb 28 |
| FRANKLIN ENERGY 1982 DRILLING PROGRAM | Dec 31 |
| FRONTIER ENERGY CORP. | Dec 31 |
| FUELS INC | Dec 31 |
| Fulucai Productions Ltd. | Jan 31 |
| GEOGLOBAL RESOURCES INC. | Dec 31 |
| Giant Resources Inc. | Dec 31 |
| GLOBAL MARINE INC | Dec 31 |
| GLOBALSANTAFE CORP | Dec 31 |
| GREY WOLF DRILLING CO /TX/ | Dec 31 |
| GREY WOLF INC | Dec 31 |
| GREY WOLF INTERNATIONAL, INC. | Dec 31 |
| GROWTEX INC | Apr 30 |
| GulfStar Energy Corp | Dec 31 |
| Heavy Earth Resources, Inc. | Dec 31 |
| HERCULES OFFSHORE, INC. | Dec 31 |
| HILLTOP ENERGY, LLC. | Jun 30 |
| HINTO ENERGY, INC | Dec 31 |
| HK EBUS Corp | May 31 |
| HOLLYWALL ENTERTAINMENT INC | Aug 31 |
| Horsepower Holdings, Inc. | Dec 31 |
| HYGENICS PHARMACEUTICALS INC | Dec 31 |
| Independence Contract Drilling, Inc. | Dec 31 |
| Inland Mid-Continent Corp | |
| JOHN D. OIL & GAS CO | Dec 31 |
| KELLEY PARTNERS 1992 DEVELOPMENT DRILLING PROGRAM | Dec 31 |
| KELLEY PARTNERS 1994 DEVELOPMENT DRILLING PROGRAM | Dec 31 |
| LASMO PLC /NEW/ | Dec 31 |
| Legend Oil & Gas, Ltd. | Dec 31 |
| LINDSAY OIL FIELD SUPPLY INC | Jun 30 |
| MARINE DRILLING COMPANIES INC | Dec 31 |
| Maverick Energy Group, Ltd. | Dec 31 |
| MAY DRILLING PARTNERSHIP 1983-1 | Dec 31 |
| MAY DRILLING PARTNERSHIP 1983-2 | Dec 31 |
| MAY DRILLING PARTNERSHIP 1983-3 | Dec 31 |
| MAY DRILLING PARTNERSHIP 1984-1 | Dec 31 |
| MAY DRILLING PARTNERSHIP 1984-2 | Dec 31 |
| MAY DRILLING PARTNERSHIP 1984-3 | Dec 31 |
| MAY LIMITED PARTNERSHIP 1983-1 | Dec 31 |
| MAY LIMITED PARTNERSHIP 1983-2 | Dec 31 |
| MAY LIMITED PARTNERSHIP 1983-3 | Dec 31 |
| MAY LIMITED PARTNERSHIP 1984-1 | Dec 31 |
| MAY LIMITED PARTNERSHIP 1984-2 | Dec 31 |
| MAY LIMITED PARTNERSHIP 1984-3 | Dec 31 |
| MEDCO HEALTH CORP | Jun 30 |
| Mewbourne Energy Partners 10-A, L.P. | Dec 31 |
| MUSHROOMS, INC. | Dec 31 |
| NABORS INDUSTRIES INC | Dec 31 |
| NEWCASTLE ENERGY CORP | Apr 30 |
| Noble Corp | Dec 31 |
| Noble Corp Ltd | Dec 31 |
| NOBLE DRILLING CORP | Dec 31 |
| Noble Finance Co | Dec 31 |
| North Atlantic Drilling Ltd. | Dec 31 |
| NORTHERN OFFSHORE LTD | Dec 31 |
| NORTHERN OFFSHORE SHIPOWNING SA | Dec 31 |
| NORTH SPRINGS RESOURCES CORP. | Apr 30 |
| NORTON DRILLING SERVICES INC | Nov 30 |
| NOWEA ENERGY, INC. | May 31 |
| Oasis Midstream Partners LP | Dec 31 |
| Ocean Rig Partners LP | Dec 31 |
| Ocean Rig UDW Inc. | |
| OCTAGON 88 RESOURCES, INC. | Jun 30 |
| OSAGE ENERGY INC | Mar 31 |
| PACIFIC DRILLING S.A. | Dec 31 |
| PARAGON OFFSHORE PLC | Dec 31 |
| PARKER DRILLING CO /DE/ | Dec 31 |
| PARKER & PARSLEY 82 II LTD | Dec 31 |
| PARKER & PARSLEY 82 I LTD | Dec 31 |
| PARKER & PARSLEY 83-A LTD | Dec 31 |
| PARKER & PARSLEY 83-B LTD | Dec 31 |
| PARKER & PARSLEY 84-A LTD | Dec 31 |
| PARKER & PARSLEY 85-A LTD | Dec 31 |
| PARKER & PARSLEY 85-B LTD | Dec 31 |
| PARKER & PARSLEY 87-A LTD | Dec 31 |
| PARKER & PARSLEY 87-B LTD | Dec 31 |
| PDC 1991-D LTD PARTNERSHIP | Dec 31 |
| PDC 1992-C LIMITED PARTNERSHIP | Dec 31 |
| PDC 1993-E LIMITED PARTNERSHIP | Dec 31 |
| PDC 1997-A LTD PARTNERSHIP | Dec 31 |
| PDC 1998-B LTD PARTNERSHIP | Dec 31 |
| PDC 2000 DRILLING PROGRAM | Dec 31 |
| PDC 2003-A LP | Dec 31 |
| PDC 2003-B LP | Dec 31 |