Patent Assignment
Reel/Frame 016136/0852
Assignment of Assignor's Interest
Recorded: 2005-01-10
Pages: 4
Assignors
HOU, XUTIAN
Executed: 2004-12-06
YANG, CHUNGUO
Executed: 2004-12-06
GAO, BINGTANG
Executed: 2004-12-06
ZENG, YIJIN
Executed: 2004-12-06
GUO, CAIXUAN
Executed: 2004-12-06
Assignees
CHINA PETROLEUM & CHEMICAL CORPORATION
6A HUIXIN DONG STREET, CHAOYANG DISTRICT, BEIJING, 100029, CHINA
EXPLORATION & PRODUCTION RESEARCH INSTITUTE, SINOPEC
NO. 31 XUEYUAN ROAD, HAIDIAN DISTRICT, BEIDAOBU, 100083, CHINA
Covered Property
(1)
Automatic Control System and Method for Bottom Hole Pressure in the Underbalance Drilling