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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Borehole apparatus and methods for measuring formation velocities as a function of azimuth, and interpretation thereof.

Time and depth correction of MWD and wireline measurements using correlation of surface and downhole measurements. Method for executing an instruction where the memory locations for data, operation to be performed and storing of the result are indicated by pointers.

Determination of horizontal resistivity of formations utilizing induction-type logging measurements in deviated borehole. Logging while drilling method and apparatus for measuring formation characteristics as a function of angular position within a borehole.

A2 Designated state s: Apparatus and method for clock shift correction for measurement-while-drilling measurements. Method and apparatus using pad carrying electrodes for electrically investigating a borehole.

Apparatus and method for wellbore resistivity imaging using capacitive coupling. Apparatus and methods to perform downhole measurements associated with subterranean formation evaluation. Kind code of ref document: Method and apparatus for well logging to obtain high-resolution seismic images of geological formations surrounding horizontal well bores.


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

Method and apparatus for generating acoustic signal with single mode of propagation. Cousr resistivity measurements for azimuthal proximity detection of bed boundaries. Structures and methods for damping tool waves particularly for acoustic logging tools. Apparatus and methods for determining gas saturation and porosity of a formation penetrated by a gas filled or liquid filled borehole.

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

Gamma-gamma density measurement system for high-pressure, high-temperature measurements. Formation resistivity measurement while drilling, utilizing physical conditions representative of the signals from a toroidal coil located adjacent the drilling bit. System and method for reducing the borehole gap for downhole formation testing sensors.

Fiagraphie correction and calibration of a deep reading propagation resistivity tool. Measurement-while-drilling acoustic system employing multiple, segmented transmitters and receivers. Sonic well tool transmitter receiver array including an attenuation and delay apparatus. Determination of borehole azimuth and the azimuthal dependence of borehole parameters.

Well logging method and apparatus using a continuous energy spectrum photon source. Method and apparatus for determining oriented density measurements including stand-off corrections.


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

Multi-frequency electromagnetic wave resistivity tool with improved calibration measurement. A2 Designated state s: System, method and apparatus for downhole system having integrated measurement while operating components. Borehole investigating methods and apparatus including the detection of a cased borehole diagrapihe another nearby coirs.

Method and apparatus for cancellation of borehole effects due to a tilted or transverse magnetic dipole. System for measuring Earth formation resistivity through an electrically conductive wellbore casing. Apparatus and method for generating sector residence time images of downhole tools. Apparatus and methods for estimating tool inclination using bit-based gamma ray sensors. Logging-while-drilling tool incorporating electronic radiation generator and method for using same.

Enhancing the quality and resolution of an image generated from single or multiple sources. EP Kind code of ref document: System, method and apparatus for petrophysical and geophysical measurements at the drilling bit.

DE DET2 de EP EPB1 fr See also references of EPA1. Procede d’obtention d’une image bidimensionnelle developpee de la paroi d’un forage.