Matches 51 - 81 out of 81 < 1 2


Match Document Document Title
4490079 Method of making a wheel  
A method for making a wheel and a wheel so made is disclosed in which the tire bead seats in the rim are deformed inwardly, the wheel is held by the deformed bead seats, and the bolting surfaces...
4471533 Well mapping system and method with sensor output compensation  
Bore-hole mapping, or surveying, or tool steering in a bore-hole is accomplished using selected combinations of sensors, with sensor signal compensation being provided, in the hole or at the...
4459759 Angular rate and position transducer for borehole survey instrument  
A transducer for sensing the angular position or rate of change of displacement of a housing of a borehole survey instrument with respect to a reference position includes a rotor magnetically...
4437243 Gyroscopic instrument  
An instrument including a gyroscopic rotor mounted to precess about a predetermined axis in response to pivotal movement of the rotor about a sensing axis, with the rate of precession being...
4393598 Borehole tool  
A surface activated multishot survey tool utilizes a dampened magnetic compass movably positioned within a probe to determine the direction of a borehole. Lamps in the probe are operable to light...
4361192 Borehole survey method and apparatus for drilling substantially horizontal boreholes  
A borehole survey method and apparatus for use in drilling substantially horizontal boreholes through a mineral deposit wherein a dip accelerometer, a roll accelerometer assembly and a fluxgate...
4357660 Formation dip and azimuth processing technique  
Illustrative embodiments of the present invention include methods and apparatus for processing measurements indicative of the dip and azimuth of formation features at various depths in a borehole...
4341113 Inspection system for heat exchanger tubes  
A system for inspecting the relatively long, thin-walled, small-bore tubes of a heat exchanger provided with support plates for holding the tubes in predetermined positions, comprising a composite...
4251921 Caliper and contour tool  
The disclosure relates to a tool for borehole logging comprising a plurality of extendable caliper arms to determine borehole contour.
4214374 Method of and apparatus for measuring the deviation of the center axis of bore holes and trenches relative to the design vertical center axis thereof  
A method of measuring the deviation of the run of the actual vertical center axis of fluid filled bore holes and trenches relative to the direction of the design center axis thereof which bore...
4199869 Mapping apparatus employing two input axis gyroscopic means  
Mapping apparatus comprises: (a) a gyroscope and a carrier frame therefor, (b) the gyroscope characterized as having a spinning rotor and torsion structure defining a gimbal, and wherein the rotor...
4174577 Borehole drift-direction probe  
The invention contemplates use of a single magnetic-field (flux) sensor mounted within an elongate probe housing, to continuously generate telemetered electric signals from which the instantaneous...
4159564 Mandrel for hydraulically expanding a tube into engagement with a tubesheet  
A mandrel for hydraulically expanding tubes into engagement with a tubesheet, the body of the mandrel being coated with an electrically isolating impermeable membrane and having an eddy current...
4141153 Bottom hole survey apparatus  
A bottom hole survey apparatus is characterized by a survey instrument having a reference line therein, the instrument being receivable by the engagement of flanges provided along the instrument...
4044828 Process for direct measurement of the orientation of hydraulic fractures  
This is an invention in a method for locating the azimuthal direction of fractures induced into an underground formation adjacent to a well bore. Practicing the method of the invention involves...
3982324 Method of determining actual size of flow openings in a tubular member located in a well  
A method of using an impression element to determine the actual size of a flow opening in a tubular member located in a well by comparing an extrusion formed on the impression element with...
3935642 Directional drilling of bore holes  
For the directional drilling of boreholes, the orientation or roll angle of the drill head or mud-motor in the borehole has to be ascertained for steering purposes. The roll angle is determined,...
3922921 Method and apparatus for measuring sewer sedimentation infiltration and flow  
An elongated upstanding probe for lowering down into a sewer manhole is provided and at least the upper end of the probe is graduated. A lower end portion of the probe includes an adjustable clamp...
3891039 Method and device for drilling to a predetermined surface  
A method and a device for rock-drilling and/or earth boring of a number of drill-holes to a predetermined bottom surface are disclosed in which a reference surface defined by electro-magnetic...
3862499 WELL SURVEYING APPARATUS  
Well surveying equipment including a probe which is lowerable into a well and contains inclination and direction sensing elements coacting with surface equipment which functions to perform a...
3842507 RECORDING INSTRUMENT FOR DETERMINING RATE OF PENETRATION IN A BOREHOLE  
A measuring instrument for monitoring the rate of penetration of a borehole comprising a shaft having a drum thereon which is turned in proportion to movement of the drill string. The shaft has an...
3685158 SONDES WITH ARTICULATED ARMS USED IN WELL LOGGING  
Apparatus for use in making measurement in a well bore includes an elongated body member having at least one pair of wall-engaging members articulated on the body member by arms for lateral...
3622971 METHOD AND APPARATUS FOR SURVEYING THE DIRECTION AND INCLINATION OF A BOREHOLE  
A magnetic reference member is maintained in a stationary position within a drill during drilling operations. The reference member is released in response to temporary cessation of the drilling...
3463253 WEDGE ORIENTATION DEVICE  
3376941 Method and apparatus for recordation of the orientation of tools in remote locations  
3323612 Sonic method for determining borehole vertical deviation  
3238631 Method and apparatus for clinometric land measurements  
3229375 Method of surveying an inclined wellbore  
3137077 Drill-hole direction indicator  
3077670 Method and apparatus for making a dipmeter survey of a borehole  
2943397 Bore hole surveying method and apparatus  

Matches 51 - 81 out of 81 < 1 2