L’invention concerne un procédé et un dispositif de diagraphie en cours de forage permettant d’obtenir des informations concernant une formation. Le dispositif. Title, Cours de diagraphies instantanées: par R. Desbrandes Author, Robert Desbrandes. Editor, École nationale supérieure du pétrole et des moteurs a. L’invention concerne un procédé et un dispositif de diagraphie en cours de forage permettant d’obtenir des informations concernant une.

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Apparatus and method for wellbore resistivity imaging using capacitive coupling.

See also references of EPA1. EP EPB1 fr Nuclear magnetic resonance imaging using phase encoding with non-linear gradient fields. Semblance processing for an acoustic measurement-while-drilling system for diagrapgie of formation boundaries.

Procede d’obtention d’une image bidimensionnelle developpee de la paroi d’un forage.

Determination of horizontal resistivity of formations utilizing induction-type logging measurements in deviated borehole. LWD resistivity device with inner transmitters and outer receivers, and azimuthal sensitivity.

Reduced-length measure while drilling apparatus using electric field short range data transmission. Method and apparatus for generating acoustic signals for LWD shear velocity measurement. Subsurface borehole evaluation dlagraphie downhole tool position determination methods. Method and apparatus for measuring formation density and the formation photo-electric factor with a multi-detector gamma-gamma tool.

Method for determining symmetry and direction properties of azimuthal gamma ray distributions.


Apparatus cokrs methods for estimating tool inclination using bit-based gamma ray sensors. Induction logging sonde with metallic support having a coaxial insulating sleeve member.

Logging-while-drilling tool incorporating electronic radiation generator and method for using same. Radiological well logging methods and apparatus for cokrs the effect of activation from the detector crystal. Method and apparatus for determining neutron detector operability using gamma ray sources. Conductivity method and apparatus for measuring strata resistivity adjacent a borehole. Method and apparatus for determining oriented density measurements including stand-off corrections.

Apparatus and method for clock shift correction for measurement-while-drilling measurements.

Resistivity sensor for generating asymmetrical current field and method of using the same. Kind code of ref document: CA CAC fr Drilling system with an acoustic measurement-while-driving system for determining parameters of interest and controlling the drilling direction.

5 cours & 10 sujets de sismologie I des études supérieures de géophysique

Method for signal enhancement in azimuthal propagation resistivity while drilling. Method and apparatus for optimizing the reception pattern of the antenna of a propagating electromagnetic wave logging tool. Triaxial magnetic heading sensing apparatus having magnetaresistors and nulling coils. Method for filtering gamma ray well logging tool response to enhance vertical courd while suppressing statistical noise.

Cours de diagraphies instantanées: par R. Desbrandes – Robert Desbrandes – Google Books

Method of determining vertical and horizontal resistivity, and relative dip in anisotropic earth formations having an arbitrary electro-magnetic antenna combination and orientation with additional rotation and positon measurements.

  ENV 1991-5 PDF

DE DET2 de Borehole investigating methods and apparatus including the detection of a cased borehole from another nearby borehole. Apparatus and method for minimizing wear and wear related measurement error in a logging-while-drilling tool.

US USB2 en Country of ref document: Inverse vertical seismic profiling using a measurement while drilling tool as a seismic source. Electromagnetic power and communication link particularly adapted for drill collar mounted sensor systems. Neutron logging tool having source and target with deuterium-tritium gas admixture.

5 cours & 10 sujets de sismologie I des études supérieures de géophysique

Measurement-while-drilling assembly using real-time toolface oriented measurements. Request for preliminary examination filed prior to diagraphiee of 19th month from priority date pct application filed before CA CAC fr Passive, active and semi-active cancellation of diaagraphie effects for well logging. Kind code of ref document: Method of sonic logging while drilling a borehole traversing an earth formation.

Structures and methods for damping tool waves particularly for acoustic logging tools. Well logging apparatus having toroidal induction antenna for measuring, while drilling, resistivity of earth formations.

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