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Class Information
Number: 33/304
Name: Geometrical instruments > Indicator of direction of force traversing natural media > Borehole direction or inclination
Description: Device comprising means for determining the bearing, or deviation from the vertical, of a deep hole in the earth, such as well bores.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7386942 |
Method and apparatus for mapping the trajectory in the subsurface of a borehole |
Jun. 17, 2008 |
| 7363717 |
System and method for using rotation sensors within a borehole |
Apr. 29, 2008 |
| 7353613 |
Directional sensor system comprising a single axis sensor element positioned at multiple controlled orientations |
Apr. 8, 2008 |
| 7260477 |
Estimation of borehole geometry parameters and lateral tool displacements |
Aug. 21, 2007 |
| 7225550 |
System and method for using microgyros to measure the orientation of a survey tool within a borehole |
Jun. 5, 2007 |
| 7143521 |
Determination of borehole azimuth and the azimuthal dependence of borehole parameters |
Dec. 5, 2006 |
| 7117605 |
System and method for using microgyros to measure the orientation of a survey tool within a borehole |
Oct. 10, 2006 |
| 7103982 |
Determination of borehole azimuth and the azimuthal dependence of borehole parameters |
Sep. 12, 2006 |
| 7047653 |
Depth correction |
May. 23, 2006 |
| 7028409 |
Method for computation of differential azimuth from spaced-apart gravity component measurements |
Apr. 18, 2006 |
| 6985814 |
Well twinning techniques in borehole surveying |
Jan. 10, 2006 |
| 6929075 |
Automated bore planning system for horizontal directional drilling |
Aug. 16, 2005 |
| 6918186 |
Compact navigation system and method |
Jul. 19, 2005 |
| 6871410 |
Autonomous apparatus and method for acquiring borehole deviation data |
Mar. 29, 2005 |
| 6854192 |
Surveying of boreholes |
Feb. 15, 2005 |
| 6845563 |
Method and device for the measurement of the drift of a borchole |
Jan. 25, 2005 |
| 6842990 |
Inclinometer system |
Jan. 18, 2005 |
| 6823602 |
Continuous measurement-while-drilling surveying |
Nov. 30, 2004 |
| 6749029 |
Automated bore planning method and apparatus for horizontal directional drilling |
Jun. 15, 2004 |
| 6668465 |
Continuous measurement-while-drilling surveying |
Dec. 30, 2003 |
| 6659196 |
Core orientation |
Dec. 9, 2003 |
| 6651496 |
Inertially-stabilized magnetometer measuring apparatus for use in a borehole rotary environment |
Nov. 25, 2003 |
| 6637119 |
Surveying of boreholes |
Oct. 28, 2003 |
| 6633816 |
Borehole survey method utilizing continuous measurements |
Oct. 14, 2003 |
| 6631563 |
Survey apparatus and methods for directional wellbore surveying |
Oct. 14, 2003 |
| 6530154 |
Method to detect deviations from a wellplan while drilling in the presence of magnetic interference |
Mar. 11, 2003 |
| 6508316 |
Apparatus to measure the earth's local gravity and magnetic field in conjunction with global positioning attitude determination |
Jan. 21, 2003 |
| 6487782 |
Method and apparatus for use in creating a magnetic declination profile for a borehole |
Dec. 3, 2002 |
| 6480119 |
Surveying a subterranean borehole using accelerometers |
Nov. 12, 2002 |
| 6453239 |
Method and apparatus for borehole surveying |
Sep. 17, 2002 |
| 6381858 |
Method for calculating gyroscopic wellbore surveys including correction for unexpected instrument movement |
May. 7, 2002 |
| 6351891 |
Miniature directional indication instrument |
Mar. 5, 2002 |
| 6321456 |
Method of surveying a bore hole |
Nov. 27, 2001 |
| 6179067 |
Method for magnetic survey calibration and estimation of uncertainty |
Jan. 30, 2001 |
| 6108921 |
Scraper for determining the position of pipelines |
Aug. 29, 2000 |
| 6076268 |
Tool orientation with electronic probes in a magnetic interference environment |
Jun. 20, 2000 |
| 6068394 |
Method and apparatus for providing dynamic data during drilling |
May. 30, 2000 |
| 6065219 |
Method and apparatus for determining the shape of an earth borehole and the motion of a tool within the borehole |
May. 23, 2000 |
| 6041509 |
Method and device for determining a space position of the axis of a cased well |
Mar. 28, 2000 |
| 6021577 |
Borehole surveying |
Feb. 8, 2000 |
| 5929540 |
Switching circuit for switching the mode of operation of a subterranean probe and method of switching |
Jul. 27, 1999 |
| 5821414 |
Survey apparatus and methods for directional wellbore wireline surveying |
Oct. 13, 1998 |
| 5806194 |
Method for conducting moving or rolling check shot for correcting borehole azimuth surveys |
Sep. 15, 1998 |
| 5806195 |
Rate gyro wells survey system including nulling system |
Sep. 15, 1998 |
| 5752320 |
Borehole dip instrument |
May. 19, 1998 |
| 5657547 |
Rate gyro wells survey system including nulling system |
Aug. 19, 1997 |
| 5646611 |
System and method for indirectly determining inclination at the bit |
Jul. 8, 1997 |
| 5640780 |
Moving device for intervening inside small-diameter pipework |
Jun. 24, 1997 |
| 5606124 |
Apparatus and method for determining the gravitational orientation of a well logging instrument |
Feb. 25, 1997 |
| 5564193 |
Method of correcting for axial and transverse error components in magnetometer readings during wellbore survey operations |
Oct. 15, 1996 |
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