| 10323501 |
Method and apparatus for generating weighted average survey |
John Lionel Weston, Stephen Victor Mullin |
2019-06-18 |
| 9267370 |
Method and apparatus for initialization of a tool via a remote reference source |
John Lionel Weston, Eric Wright, Gary Uttecht |
2016-02-23 |
| 9207352 |
Method and apparatus for initialization of a tool configured to be moved along a wellbore |
John Lionel Weston |
2015-12-08 |
| 8781744 |
Downhole surveying utilizing multiple measurements |
John Lionel Weston |
2014-07-15 |
| 8655596 |
System and method for measuring depth and velocity of instrumentation within a wellbore using a bendable tool |
Stephen Victor Mullin, John Lionel Weston |
2014-02-18 |
| 8457896 |
Method and apparatus for determining locations of multiple casings within a wellbore conductor |
— |
2013-06-04 |
| 8433517 |
System and method for measuring depth and velocity of instrumentation within a wellbore using a bendable tool |
Stephen Victor Mullin, John Lionel Weston |
2013-04-30 |
| 8433519 |
Downhole surveying utilizing multiple measurements |
John Lionel Weston |
2013-04-30 |
| 8428879 |
Downhole drilling utilizing measurements from multiple sensors |
John Lionel Weston |
2013-04-23 |
| 8374793 |
Reducing error contributions to gyroscopic measurements from a wellbore survey system |
John Lionel Weston, Gary Uttecht |
2013-02-12 |
| 8305230 |
Method and apparatus for initialization of a wellbore survey tool |
John Lionel Weston |
2012-11-06 |
| 8294592 |
Method and apparatus for initialization of a wellbore survey tool via a remote reference source |
John Lionel Weston, Eric Wright, Gary Uttecht |
2012-10-23 |
| 8185312 |
Downhole surveying utilizing multiple measurements |
John Lionel Weston |
2012-05-22 |
| 8095317 |
Downhole surveying utilizing multiple measurements |
John Lionel Weston |
2012-01-10 |
| 8065085 |
System and method for measuring depth and velocity of instrumentation within a wellbore using a bendable tool |
Stephen Victor Mullin, John Lionel Weston |
2011-11-22 |
| 8065087 |
Reducing error contributions to gyroscopic measurements from a wellbore survey system |
John Lionel Weston, Gary Uttecht |
2011-11-22 |
| 7363717 |
System and method for using rotation sensors within a borehole |
Gary Uttecht |
2008-04-29 |
| 7350410 |
System and method for measurements of depth and velocity of instrumentation within a wellbore |
Martyn Ian Greensmith |
2008-04-01 |
| 7225550 |
System and method for using microgyros to measure the orientation of a survey tool within a borehole |
Gary Uttecht |
2007-06-05 |
| 7117605 |
System and method for using microgyros to measure the orientation of a survey tool within a borehole |
Gary Uttecht |
2006-10-10 |
| 6957580 |
System and method for measurements of depth and velocity of instrumentation within a wellbore |
Martyn Ian Greensmith |
2005-10-25 |