Patent Assignment
Reel/Frame 022231/0733
Assignment of Assignor's Interest
Recorded: 2009-02-10
Pages: 14
Assignor
PATHFINDER ENERGY SERVICES, INC.
Executed: 2008-08-25
Assignee
SMITH INTERNATIONAL, INC.
16740 HARDY ST., HOUSTON, TEXAS, 77032
Covered Properties
(77)
Distance Determination from a Magnetically Patterned Target Well
PCT:
PCT/US2008/005671 ↗
Method of Optimizing a Well Path During Drilling
PCT:
PCT/US2008/005713 ↗
Gravity Azimuth Measurement at a Non-Rotating Housing
PCT:
PCT/US2008/006469 ↗
Probablistic Imaging with Azimuthally Sensitive Mwd/Lwd Sensors
PCT:
PCT/US2008/008958 ↗
Non-Contact Capacitive Datalink for a Downhole Assembly
PCT:
PCT/US2008/010201 ↗
Data Compression Method for Use in Downhole Applications
PCT:
PCT/US2009/031804 ↗
Acoustic Attenuator, Well Logging Apparatus and Method of Well Logging
Patent:
5,510,582 →
Application:
08/398,979 →
Standoff Compensation for Acoustic Logging While Drilling Systems
Patent:
5,726,951 →
Application:
08/430,822 →
Acoustic Transducer for Lwd Tool
Patent:
5,644,186 →
Application:
08/483,112 →
Cancellation of Tool Mode Signal from Combined Signal
Patent:
5,780,784 →
Application:
08/733,367 →
Acoustic Lwd Tool Having Receiver Calibration Capabilities
Patent:
6,208,585 →
Application:
09/105,344 →
Method of and Apparatus for Independently Determining the Resistivity and/or Dielectric Constant of an Earth Formation
Sprung Member and Actuator for Downhole Tools
Estimation of Formation Porosity Using Water Measurement
Passive Ranging Techniques in Borehole Surveying
Supplemental Referencing Techniques in Borehole Surveying
Downhole Referencing Techniques in Borehole Surveying
Optimized Battery Life in Multiple Battery Applications
Series-Resonant Tuning of a Downhole Loop Antenna
Flat Hollow Brushless Servo Motor with Tool Mounting Hole
Transverse Magnetization of Casing String Tubulars
Matching Layer Assembly for a Downhole Acoustic Sensor
Composite Backing Layer for a Downhole Acoustic Sensor
Acoustic Sensor for Downhole Measurement Tool
Pressure Controlled Fluid Sampling Apparatus and Method
Adjustment for Frequency Dispersion Effects in Electromagnetic Logging Data
Method of Estimating Electrical Parameters of an Earth Formation with a Simplified Measurement Device Model
Well Twinning Techniques in Borehole Surveying
Electrical Connector Useful in Wet Environments
Shear Wave Velocity Determination Using Multi-Pole Wave
Enhanced Measurement of Azimuthal Dependence of Subterranean Parameters
Determining a Borehole Azimuth from Tool Face Measurements
Control Method for Downhole Steering Tool
Estimation of Borehole Geometry Parameters and Lateral Tool Displacements
Downhole Rotatable-Shaft Connector Assembly and Method
Drill String Rotation Encoding
Determination of Borehole Azimuth and the Azimuthal Dependence of Borehole Parameters
Filter Assembly Having a Bypass Passageway and Method
Spring Mechanism for Downhole Steering Tool Blades
Programming Method for Controlling a Downhole Steering Tool
Azimuthally Sensitive Receiver Array for an Electromagnetic Measurement Tool
Azimuthally Focused Electromagnetic Measurement Tool
Adjustment for Frequency Dispersion Effects in Electromagnetic Logging Data
Well Logging Apparatus for Obtaining Azimuthally Sensitive Formation Resistivity Measurements
Shear Wave Velocity Determination Using Evanescent Shear Wave Arrivals
Downhole Steering Tool Having a Non-Rotating Bendable Section
Measurement Tool for Obtaining Tool Face on a Rotating Drill Collar
Shear Wave Velocity Determination Using Circumferentially Aligned Transmitter and Receiver Elements
Magnetization of Target Well Casing Strings Tubulars for Enhanced Passive Ranging
Method for Locating Casing Joints Using Measurement While Drilling Tool
Enhanced Measurement of Azimuthal Dependence of Subterranean Parameters with Filters and/or Discretely Sampled Data
Data compression method used in downhole applications
Application:
11/384,969 →
Publication:
US 2007/0223822
Piezocomposite Transducer for a Downhole Measurement Tool
Series-Resonant Tuning of an Lwd Receiver
Drilling Fluid Pressure Pulse Detection Using a Differential Transducer
Apparatus and Method for Downhole Dynamics Measurements
Determination of Borehole Azimuth and the Azimuthal Dependence of Borehole Parameters
Apparatus and Method for Magnetizing Casing String Tubulars
Integrated Circuit Packages Including Damming and Charge Protection Cover for Harsh Environments
Closed-Loop Control of Hydraulic Pressure in a Downhole Steering Tool
Apparatus and Method for Determining Drilling Fluid Acoustic Properties
Linear Position Sensor for Downhole Tools and Method of Use
Patent:
7,377,333 →
Application:
11/714,966 →
Distance Determination from a Magnetically Patterned Target Well
Control Method for Downhole Steering Tool
Gravity Azimuth Measurement at a Non-Rotating Housing
Angular Position Sensor for a Downhole Tool
Probablistic Imaging with Azimuthally Sensitive Mwd/Lwd Sensors
Non-Contact Capacitive Datalink for a Downhole Assembly
Data Compression Method for Use in Downhole Applications
Downhole Hydraulic Control System
Forced Balanced System
Data Compression Transforms for Use in Downhole Applications
Method of Optimizing a Well Path During Drilling
Logging While Drilling Tool for Obtaining Azimuthally Sensitive Formation Resistivity Measurements
Non-Azimuthal and Azimuthal Formation Evaluation Measurement in a Slowly Rotating Housing
Closed-Loop Physical Caliper Measurements and Directional Drilling Method
Caliper Logging Using Circumferentially Spaced and/or Angled Transducer Elements
Related Assignments
(8)
Other recorded transfers of the patents in this record — the chain of ownership.
First Amended Security Agreement
May 10, 2005
From: PATHFINDER ENERGY SERVICES, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 015980/0965 →
Security Agreement
May 10, 2005
From: PATHFINDER ENERGY SERVICES, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 015990/0026 →
Assignment of Assignor's Interest
Nov 24, 2008
From: MCELHINNEY, GRAHAM; CEH, LEON
To: PATHFINDER ENERGY SERVICES, INC.
Reel/Frame 021880/0941 →
Release of Security Interest
Mar 27, 2009
From: WELLS FARGO BANK, NATIONAL ASSOCIATION (AS ADMINISTRATIVE AGENT)
To: PATHFINDER ENERGY SERVICES, INC.
Reel/Frame 022460/0304 →
Release of Security Interest
Mar 27, 2009
From: WELLS FARGO BANK, NATIONAL ASSOCIATION (AS ADMINISTRATIVE AGENT)
To: PATHFINDER ENERGY SERVICES, INC.
Reel/Frame 022460/0309 →
Release of Security Interest
Apr 8, 2009
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS SUCCESSOR BY MERGER TO WELLS FARGO BANK TEXAS, N.A. (AS ADMINISTRATIVE AGENT)
To: PATHFINDER ENERGY SERVICES, INC.
Reel/Frame 022520/0291 →
Release of Security Interest
Apr 8, 2009
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS SUCCESSOR BY MERGER TO WELLS FARGO BANK TEXAS, N.A. (AS ADMINISTRATIVE AGENT)
To: PATHFINDER ENERGY SERVICES, INC.
Reel/Frame 022520/0358 →
Assignment of Assignor's Interest
Oct 17, 2012
From: SMITH INTERNATIONAL, INC.
To: SCHLUMBERGER TECHNOLOGY CORPORATION
Reel/Frame 029143/0015 →