Obie M. Langford

Method and apparatus for measuring azimuth and speed of horizontal fluid flow by a borehole

Detection of impurities in fluid flowing in refinery pipeline or oil production operations using nuclear techniques

Behind well casing water flow detection system

Cockcroft-Walton voltage multiplying circuit for slim hole well logging tool

Means and method for controlling the neutron output of a neutron generator tube

Pulsed neutron logging: multipurpose logging sonde for changing types of logs in the borehole without bringing the sonde to the surface

High-voltage arc detector

Method and apparatus for defining radiation-opaque pathways within shielding materials

Verfahren und vorrichtung zur bestimmung von azimutalwinkel und geschwindigkeit einer in waagerechter richtung an einem bohrloch vorbeistroemenden formationsfluessigkeit Method and device for determination of azimuth and velocity in a horizontal direction vorbeistroemenden in a borehole formationsfluessigkeit

A method and apparatus for determining azimuth and speed of a in the horizontal direction on a well vorbeistroemenden formationsfluessigkeit