| PETROLEUM CAPITAL FUNDING, GP LLC |
PETROLEUM CAPITAL FUNDING, LP |
A19000000546 |
| PETROLEUM DEVELOP.CORP. |
U.S.A. ENERGY '80 LTD. |
A09866 |
| PETROLEUM DEVELOPMENT CO |
CUYAHOGA PETROLEUM DRILLING PROGRAM 1981-1, LTD. |
A10425 |
| PETROLEUM DEVELOPMENT CO |
PETRO DRILLING FUND 1981-1 LTD |
A11841 |
| PETROLEUM DEVELOPMENT CO |
PETRO DRILLING FUND 1982-1 LTD. |
A13053 |
| PETROLEUM ENGINRG.CO-OKL |
PECO PETROLEUM ASSOCIATES, LTD. |
A14742 |
| PETROLEUM EQUIPEMENT LIMITED |
NATURAL OCEAN INVESTMENTS LLC |
L16000192570 |
| PETROLEUM EQUIPMENT LIMITED |
IRON STONE 2000 LLC |
L16000164686 |
| PETROLEUM EQUIPMENT LIMITED |
GOLD STONE LLC |
L16000172248 |
| PETROLEUM EQUIPMENT LIMITED |
NATURAL FIRE INVESTMENTS LLC |
L16000192576 |
| PETROLEUM EQUIPMENT LIMITED |
NATURAL GLOBAL INVESTMENTS LLC |
L16000194043 |
| PETROLEUMGAS LOGISTICS, LTD. |
ORION PETROLEUM SERVICES, INC. |
P13000057845 |
| PETROLEUM, INC. |
WINTHROP 314, LLC |
L08000095770 |
| PETROLEUM METALS COMPANY, LLC |
ODERCO DRILLING EUROPA, LLC |
L08000052890 |
| PETROLEUM METALS COMPANY, LLC |
ODERCO DRILLING CORPORATION |
P08000052851 |
| PETROLEUM & MINING GROUP, LLC (100%) |
PMG TRADER, LLC |
L15000155639 |
| PETROLEUM REALTY CORPROATION |
PETROLEUM REALTY INVESTMENT PARTNERS, L.P. |
B99000000195 |
| PETROLEUM REALTY INVESTMENT PARTNERS, L.P. |
PETROLEUM REALTY I, LLC |
M00000000699 |
| PETROLEUM REALTY INVESTMENT PARTNERS, L.P. |
PETROLEUM REALTY V, LLC |
M01000000004 |
| PETROLEUM REALTY INVESTMENT PARTNERS, L.P. |
PETROLEUM REALTY VI, LLC |
M14000002628 |