Patent Assignment
Reel/Frame 012365/0043
Assignment of Assignor's Interest
Recorded: 2001-12-12
Pages: 3
Assignor
PRECISION DRILLING CORPORATION
Executed: 2000-05-26
Assignee
COMPUTALOG LTD.
4500, 150 - 6TH AVENUE SW, CALGARY, AB, T2P 3, CANADA
Covered Property
(1)
Method and Apparatus for the Determination of Formation Fluid Flow Rates and Reservoir Deliverability
Patent:
5,337,821 →
Application:
08/014,132 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Aug 27, 2001
From: AQRIT INDUSTRIES LTD.
To: PRECISION DRILLING CORPORATION
Reel/Frame 012124/0371 →
Change of Name
Jul 1, 2005
From: COMPUTALOG LTD.
To: PRECISION DRILLING TECHNOLOGY SERVICES GROUP, INC.
Reel/Frame 017275/0188 →
Change of Name
Aug 3, 2005
From: PRECISION DRILLING TECHNOLOGY SERVICES GROUP, INC.
To: PRECISION ENERGY SERVICES, LTD.
Reel/Frame 016345/0078 →
Change of Name
Feb 7, 2006
From: COMPUTALOG LTD.
To: PRECISION DRILLING TECHNOLOGY SERVICES GROUP, INC.
Reel/Frame 017230/0980 →
Assignment of Assignor's Interest
Apr 21, 2006
From: PRECISION ENERGY SERVICES LTD.
To: PRECISION ENERGY SERVICES ULC
Reel/Frame 017507/0031 →
Assignment of Assignor's Interest
Apr 26, 2006
From: PRECISION ENERGY SERVICES ULC
To: WEATHERFORD CANADA PARTNERSHIP
Reel/Frame 017527/0191 →