Matches 1 - 50 out of 158 1 2 3 4 >


Match Document Document Title
8881414 Inclination measurement devices and methods of use  
Downhole tools are provided for measuring the inclination of a portion of a drill string. In certain embodiments, downhole tools for measuring inclination comprise a catch system for measuring...
8874407 System for determination of downhole position  
A measurement means for a downhole tool for determining the orientation of the axis of a downhole tool in relation to true north. It includes a gyro sensor capable of measuring angular rate, a...
8806769 Bullseye indicator and method  
A bulls eye indicator device and method of manufacture used to measure the two-dimension angle of inclination of equipment that is mounted on a sea bed. A base and transparent window are sealed...
8600115 Borehole image reconstruction using inversion and tool spatial sensitivity functions  
A method for reconstructing a borehole image includes determining a spatial sensitivity function for a borehole imaging tool and using the imaging tool to obtain a borehole image of a subterranean...
8528219 Inclination measurement devices and methods of use  
Downhole tools are provided for measuring the inclination of a portion of a drill string. In certain embodiments, downhole tools for measuring inclination comprise a catch system for measuring...
8489333 Device orientation determination  
In some embodiments, apparatus and systems, as well as methods, may operate to obtain hole azimuth data or inclination data associated with a chassis (e.g., comprising a measurement or logging...
8456159 Stabilization system for sensors on moving platforms  
A stabilized field sensor apparatus collects field data, in particular magnetic field data, with reduced motion noise. The apparatus includes a tear drop shaped housing, a tow frame in the...
8061048 Apparatus for azimuth measurements using gyro sensors  
An apparatus for azimuth measurements is provided. The apparatus comprises a housing and a plurality of gyro sensors aligned in the housing. Each of the plurality of gyro sensors has an input axis...
8061047 Active positioning of downhole devices using spherical motors  
Methods and related systems are described for downhole positioning of sensors such as accelerometers, gyroscopes, tiltmeters and geophones. The sensor or sensors are mounted within the spherical...
8006396 Measuring device for measuring deviation of body and method thereof  
A measuring device, for measuring a deviation of a body to determine an amount of shimming requisite for the body, includes an elongated member, a level indicating member, a gauge member and a...
7954252 Methods and apparatus to determine and use wellbore diameters  
Example methods and apparatus to determine and use wellbore diameters are disclosed. A disclosed example method comprises positioning a downhole tool in a wellbore, counting a number of rotations...
7942204 Method and apparatus for rescaling measurements while drilling in different environments  
A method of using a survey system comprising at least one sensor. The method comprises operating the survey system to provide information regarding the orientation of the sensor relative to the...
7730625 Gyroscopically-oriented survey tool  
A gyroscopically-oriented survey tool, includes a housing having an axis. Three accelerometers are mounted in the housing with their axis set orthogonally. A first of the axis is aligned to the...
7725263 Gravity azimuth measurement at a non-rotating housing  
Aspects of this invention include methods for surveying a subterranean borehole. In one exemplary aspect, a change in borehole azimuth between first and second longitudinally spaced gravity...
7712223 Apparatus for azimuth measurements using gyro sensors  
An apparatus for azimuth measurements comprises an elongated housing, a plurality of gyro sensors, each of the gyro sensors having an input axis for angular velocity measurements, spherical sensor...
7685732 Orientation sensing apparatus and a method for determining an orientation  
An orientation sensing apparatus includes a rotatable first member, an orientation sensor device fixed with the first member for generating orientation data relating to an orientation sensor...
7669656 Method and apparatus for rescaling measurements while drilling in different environments  
A method of using a survey system comprising at least one sensor. The method comprises operating the survey system to provide information regarding the orientation of the sensor relative to the...
7599797 Method of mitigating risk of well collision in a field  
A method and system for mitigating risk of well collision in a field includes receiving an anti-collision standard exemption request containing a description of risk of collision between a subject...
7528946 System for detecting deflection of a boring tool  
A system for monitoring deflection of a downhole tool assembly. The system comprises a beam source directing a beam at a receptor positioned proximate the downhole tool assembly. The receptor...
7386942 Method and apparatus for mapping the trajectory in the subsurface of a borehole  
An apparatus for determining the orientation of a borehole at a point along the borehole, includes a tiltmeter for measuring the inclination of the borehole relative to the vertical, a vector...
7363717 System and method for using rotation sensors within a borehole  
A system and method for using a survey tool within a borehole is provided. The survey tool includes a plurality of rotation sensors each having a sensing axis and a direction of least acceleration...
7353613 Directional sensor system comprising a single axis sensor element positioned at multiple controlled orientations  
A directional sensor system that incorporates a single axis sensor element that is manipulated to a plurality of orientations. The resulting responses of the sensor element at these locations are...
7260477 Estimation of borehole geometry parameters and lateral tool displacements  
A method for determining a borehole geometry parameter vector and/or lateral tool displacement vectors in a borehole is provided. The method includes acquiring at least one set of standoff...
7225550 System and method for using microgyros to measure the orientation of a survey tool within a borehole  
A system and method for determining an orientation of the survey tool within a borehole utilizes a survey tool including a plurality of rotation sensors each having a sensing axis and a direction...
7143521 Determination of borehole azimuth and the azimuthal dependence of borehole parameters  
A method for determining a borehole azimuth in a borehole is disclosed. In one exemplary embodiment, the method includes acquiring at least one standoff measurement and a tool azimuth measurement...
7047653 Depth correction  
A method of determining the depth of equipment in an underground borehole, the equipment being suspended in the borehole by means of a cable extending from the surface into the well, comprises:...
7028409 Method for computation of differential azimuth from spaced-apart gravity component measurements  
A method is provided for computing the differential azimuth between two sets of spaced-apart gravity component measurement devices in a borehole, employing multiple rotation angles. The method...
6985814 Well twinning techniques in borehole surveying  
A method for surveying a borehole is provided. The method includes providing a tool having a magnetic field measurement device disposed thereon and positioning the tool in a borehole. Magnetic...
6929075 Automated bore planning system for horizontal directional drilling  
Systems provide for electronic development of a bore plan for use in connection with an underground boring machine. Electronically developing a bore plan involves providing topographical...
6918186 Compact navigation system and method  
A compact navigation system for a rover is provided. The navigation system includes a housing configured to be transported by the rover; a gimbal system having two or more gimbals that includes at...
6871410 Autonomous apparatus and method for acquiring borehole deviation data  
An autonomous down hole survey tool and method for determining deviation angles of a well bore while tripping. The instrument package assembly is carried in a commercially available running gear...
6854192 Surveying of boreholes  
A borehole drilling and survey assembly includes a drill string of magnetic material, a non-magnetic drill collar, and a non-magnetic rotary drilling system including a drill bit. A near-bit...
6845563 Method and device for the measurement of the drift of a borchole  
A device and a method for the measurement of the angle of drift of a borehole that extends from the surface of the ground downwardly into the earth. The device comprises a generally hollow...
6842990 Inclinometer system  
The invention relates to a device for measuring lateral displacement of a casing in a vertical bore and includes an inclinometer probe, a cable, and a cable reel with electronics mounted in the...
6823602 Continuous measurement-while-drilling surveying  
A continuous measurement-while-drilling surveying apparatus includes a fiber optic gyroscope sensitive to rotation about the tool spin axis of the bottom hole assembly and a second fiber optic...
6749029 Automated bore planning method and apparatus for horizontal directional drilling  
A system and method provide for electronic development of a bore plan for use in connection with an underground boring machine. Electronically developing a bore plan involves providing...
6659196 Core orientation  
An upper end (10) for the inner tube of a core drill has a marking device comprising a pendulum (350) or hard ball (30) which runs in a circumferential track (24). The marking device adapted to be...
6631563 Survey apparatus and methods for directional wellbore surveying  
Wellbore survey methods and apparatus for wireline and measurement-while-drilling operations are disclosed which include a gyroscope, wherein the gyroscope has a spin axis, aligned with the...
6633816 Borehole survey method utilizing continuous measurements  
A borehole survey method is provided for processing continuous measurements of the earth's magnetic and gravitational fields obtained while drilling a borehole. The present invention improves...
6530154 Method to detect deviations from a wellplan while drilling in the presence of magnetic interference  
A method for drilling a wellbore to assure the avoidance of a substantially adjacent known magnetic source comprising the steps of obtaining survey data for the path or trajectory of a known...
6508316 Apparatus to measure the earth's local gravity and magnetic field in conjunction with global positioning attitude determination  
The present invention provides a method for determining magnetometer errors during wellbore survey operations. It is capable of determining errors on up to three axes, with or without the use of...
6487782 Method and apparatus for use in creating a magnetic declination profile for a borehole  
A method and apparatus for use in creating a magnetic declination profile for a borehole. The method includes the steps of making a magnetic directional measurement at a longitudinal location in...
6480119 Surveying a subterranean borehole using accelerometers  
A method and apparatus for surveying a subterranean borehole is disclosed which uses two sets of accelerometers joined by a joining structure which prevents relative rotation between the two sets,...
6453239 Method and apparatus for borehole surveying  
The invention is, in its various aspects, a method and apparatus useful for strapdown inertial navigation and surveying in a borehole. The method comprises maneuvering a probe including three...
6381858 Method for calculating gyroscopic wellbore surveys including correction for unexpected instrument movement  
A method for calculating a gyroscope survey is disclosed. The method includes measuring outputs of gyroscopes and accelerometers in a survey instrument. An instrument rotational movement is...
6321456 Method of surveying a bore hole  
A method for determining azimuth in well bore hole where the well is being drilled utilizing Measurement-While-Drilling (MWD) equipment, including gravitometer and magnetometer instruments in the...
6179067 Method for magnetic survey calibration and estimation of uncertainty  
The present invention provides a method for determining magnetometer errors during wellbore survey operations. It is capable of determining errors on up to three axes, with or without the use of...
6108921 Scraper for determining the position of pipelines  
Scraper for determining the position of pipelines with at least one scraper body and on the outer circumference of the latter are provided support elements for guiding in the pipeline, the scraper...
6076268 Tool orientation with electronic probes in a magnetic interference environment  
An apparatus and method for orienting directional tools within a bore hole by recognizing and compensating for field biases brought about by ferromagnetic anamolies surrounding the bore hole,...
6068394 Method and apparatus for providing dynamic data during drilling  
The present disclosure is directed to both a method and apparatus for providing data dynamically during the drilling of a borehole. This invention can be used with drilling apparatus which is...

Matches 1 - 50 out of 158 1 2 3 4 >