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US3853004A
|
|
Methods and systems for measuring, displaying and recording time-rate of penetration
|
|
US3339636A
|
|
Whipstocks
|
|
US3215204A
|
|
Whipstock engaging and releasing device
|
|
DE1129434B
|
|
Photographic inclinometer and direction meter for deep boreholes
|
|
US3095924A
|
|
Hydraulically actuated orienting device
|
|
US3115036A
|
|
Weight recording apparatus
|
|
US3156310A
|
|
Stabilized knuckle joint
|
|
US3059707A
|
|
Method and apparatus for orienting cores
|
|
US3055743A
|
|
Gas detection apparatus
|
|
US3068946A
|
|
Knuckle joint
|
|
US3052309A
|
|
Apparatus for orienting well drilling equipment
|
|
US2956781A
|
|
Deflecting tool
|
|
US2970879A
|
|
Drilling recording chart holder
|
|
US2996807A
|
|
Earth bore survey instrument
|
|
US2819040A
|
|
Deflecting tool
|
|
US2819039A
|
|
Deflecting tools
|
|
US2876992A
|
|
Deflecting tools
|
|
US2755430A
|
|
Apparatus for and method of logging earth bores
|
|
US2764310A
|
|
Barrel closure for survey instrument
|
|
US2728554A
|
|
Means for orienting tools in well bores
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