Method and apparatus for measurement-while-drilling utilizing im

Method and apparatus for measuring azimuthal as well as longitud

Method and apparatus for measuring characteristics of...

Method and apparatus for measuring characteristics of...

Method and apparatus for measuring electromagnetic properties of

Method and apparatus for measuring mud resistivity

Method and apparatus for measuring pollutants contaminating eart

Method and apparatus for measuring resistivity of an earth...

Method and apparatus for measuring strata resistivity adjacent a

Method and apparatus for measuring the thickness of a layer of g

Method and apparatus for measuring transient electromagnetic and

Method and apparatus for minimizing direct coupling for...

Method and apparatus for obtaining sectional information of the

Method and apparatus for optimizing the reception pattern of the

Method and apparatus for processing a signal received by an...

Method and apparatus for recovering hydrocarbons from...

Method and apparatus for reducing borehole and eccentricity...

Method and apparatus for reducing signal-phase error in inductio

Method and apparatus for reducing the effects of parasitic...

Method and apparatus for signal bandpass sampling in measurement