| Patent Number |
Title Of Patent |
Date Issued |
| 7897914 |
Downhole nuclear tool |
March 1, 2011 |
| In one aspect of the invention, a downhole tool string component comprises a tubular body with a first and a second tool joint adapted to connect to adjacent tool string components, and a central bore adapted to pass drilling mud between the joints. A sleeve circumferentially disposed |
| 7884611 |
Method for controlling a characteristic of an induction field |
February 8, 2011 |
| In one aspect of the present invention, an induction resistivity tool includes an induction transmitter and an induction receiver located along the length of the tool. The transmitter is located adjacent at least one induction bucking coils of the tool. When activated the bucking coils a |
| 7692140 |
Downhole cover |
April 6, 2010 |
| In one aspect of the invention, a downhole tool string component comprises a tubular body with a first and a second tool joint adapted to connect to adjacent tool string components, and a central bore adapted to pass drilling mud between the joints. A sleeve circumferentially disposed |
| 7669671 |
Segmented sleeve on a downhole tool string component |
March 2, 2010 |
| In one aspect of the invention a downhole tool string component has a segmented sleeve slideably attached over the exterior of a mandrel which is adapted for connection to an adjacent tool string component. An end of the sleeve is abutted against a shoulder element of the mandrel and an |
| 7598886 |
System and method for wirelessly communicating with a downhole drill string |
October 6, 2009 |
| A system for communicating with a downhole network integrated into a downhole drill string is disclosed in one aspect of the invention as including a data transmission coupler mounted to a downhole tool and adapted to transmit data across a tool joint. The data transmission coupler i |
| 7598742 |
Externally guided and directed field induction resistivity tool |
October 6, 2009 |
| In one aspect an induction resistivity tool incorporated into a downhole tool string comprises an outer wall of a downhole component comprising an outer diameter and at least one induction transmitter assembly disposed along the outer diameter. The at least one transmitter assembly compr |
| 7583085 |
Downhole sensor assembly |
September 1, 2009 |
| In one aspect of the invention, a sensor assembly for incorporation into a downhole tool string comprises at least one sensor adapted to detect changes in magnetic flux proximate a first portion of the downhole tool string. A second portion of the downhole tool string comprises a cha |
| 7541813 |
Externally guided and directed halbach array field induction resistivity tool |
June 2, 2009 |
| In one aspect of the invention an induction resistivity tool incorporated into a downhole tool string comprises an outer wall of a downhole component having an outer diameter. At least one induction transmitter assembly is disposed along the outer diameter. The transmitter assembly c |
| 7497254 |
Pocket for a downhole tool string component |
March 3, 2009 |
| A downhole tool string component, having a tubular body with an outer diameter. A first, second, and third flange are disposed around the outer diameter of the tubular body at different axial locations. A first sleeve is disposed around the tubular body such that opposite ends of the fir |
| 7426968 |
Drill bit assembly with a probe |
September 23, 2008 |
| The current invention discloses a drill bit assembly with a body portion intermediate a shank portion and a working portion. The working portion may have at least one cutting element. The drill bit assembly may also have a shaft with a first end disposed within the assembly, a second end |
| 7398837 |
Drill bit assembly with a logging device |
July 15, 2008 |
| In some aspects of the present invention, a drill bit assembly has a body portion intermediate a shank portion and a working portion. The working portion has at least one cutting element. In some embodiments, the drill bit assembly has a shaft with an end substantially coaxial to a centr |
| 7301429 |
Multiple frequency inductive resistivity device |
November 27, 2007 |
| In one aspect of the present invention, an induction resistivity tool incorporated into a downhole tool string component comprises an annular radial recess disposed along an outside surface of a tubular wall of the downhole component. At least one electrically insulated induction coil is |
| 7265649 |
Flexible inductive resistivity device |
September 4, 2007 |
| In one aspects of the present invention, an induction resistivity tool incorporated into a downhole tool string comprises a downhole tool string component comprising a mid-body intermediate first and second tool joints adapted for connection to adjacent tool string components. The mid-bo |
