Attached files
Exhibit 21.1
Subsidiaries—as of December 31, 2010
Company Name
|
State or country of
Incorporation or organization
|
Voting percent
Owned directly or indirectly by registrant
|
Song Yuan North East Petroleum Technical Service Co. Ltd.
|
People’s Republic of China
|
90%
|
Chang Ling Longde Oil and Gas Development Co. Ltd.
|
People’s Republic of China
|
90%
|
Song Yuan Yu Qiao Oil & Gas Development Co. Ltd.
|
People’s Republic of China
|
90%
|
Song Yuan Tiancheng Drilling Engineering Co. Ltd.
|
People’s Republic of China
|
95%
|