Patent Assignment
Reel/Frame 015990/0026
Security Agreement
Recorded: 2005-05-10
Received: 2005-05-10
Pages: 7
Assignor
PATHFINDER ENERGY SERVICES, INC.
Executed: 2004-06-30
Assignee
WELLS FARGO BANK, NATIONAL ASSOCIATION
1000 LOUISIANA, 3RD FLOOR, HOUSTON, TX, 77002, UNITED STATES
Covered Properties
(23)
Determining a Borehole Azimuth from Tool Face Measurements
Application:
10/862,558 →
Enhanced Measurement of Azimuthal Dependence of Subterranean Parameters
Application:
10/827,134 →
Azimuthally focused electromagnetic measurement tool
Application:
60/548,928 →
Shear Wave Velocity Determination Using Multi-Pole Wave
Application:
10/783,426 →
Electrical Connector Useful in Wet Environments
Application:
10/761,695 →
Drilling fluid filter assembly having a bypass passageway
Application:
60/527,614 →
Well Twinning Techniques in Borehole Surveying
Application:
10/705,562 →
Method of Estimating Electrical Parameters of an Earth Formation with a Simplified Measurement Device Model
Application:
10/673,843 →
Adjustment for Frequency Dispersion Effects in Electromagnetic Logging Data
Application:
10/655,290 →
Pressure Controlled Fluid Sampling Apparatus and Method
Application:
10/633,853 →
Apparatus for obtaining high quality formation fluid samples
Application:
60/492,483 →
Electrical connection useful in wet environments
Application:
60/489,565 →
Matching Layer Assembly for a Downhole Acoustic Sensor
Application:
10/613,268 →
Composite Backing Layer for a Downhole Acoustic Sensor
Application:
10/613,375 →
Acoustic Sensor for Downhole Measurement Tool
Application:
10/613,610 →
Encoding data in a sequence of rotational speed variations of a drill string
Application:
60/484,042 →
Series-Resonant Tuning of a Downhole Loop Antenna
Application:
10/427,899 →
Adjustment for frequency dispersion effects in electromagnetic logging data
Application:
60/466,533 →
Optimized Battery Life in Multiple Battery Applications
Application:
10/397,911 →
Passive Ranging Techniques in Borehole Surveying
Application:
10/368,257 →
Downhole Referencing Techniques in Borehole Surveying
Application:
10/369,353 →
Sprung Member and Actuator for Downhole Tools
Application:
10/292,301 →
Gravity azimuth techniques in borehole surveying
Application:
60/417,304 →