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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Seeman; Bronislaw
Address:
Meudon, FR
No. of patents:
5
Patents:












Patent Number Title Of Patent Date Issued
4885723 Acoustic apparatus and method for detecting borehole wall discontinuities such as vertical fract December 5, 1989
Apparatus and methods are described for detecting fractures in a wall of a borehole penetrating an earth formation. An acoustic transducer produces pulses of acoustic energy at beam forming frequencies with the direction of the beam being so oriented as to preferentially excite transvers
4827457 Method and apparatus for acoustically measuring the transverse dimensions of a borehole May 2, 1989
An apparatus and method for the measuring the transverse dimensions of a hole such as in an oil well including a sonde on which an electro-acoustic transducer is mounted in an off centered position in relation to the axis of the sonde. This transducer has two opposite active faces so as
4661933 Method and apparatus for acoustically measuring the transverse dimensions of a borehole April 28, 1987
An apparatus and method for the measuring the transverse dimensions of a hole such as in an oil well including a sonde on which an electro-acoustic transducer is mounted in an offcentered position in relation to the axis of the sonde. This transducer has two opposite active faces so as t
4433240 Method and apparatus for measuring gamma rays in a borehole February 21, 1984
A gain stabilization loop for a gamma ray spectroscopy technique uses count rates from a pair of contiguous windows positioned on either side of at least one or more peaks of the detected spectrum. These count rates are combined to generate an error signal which minimizes the statistical
4367541 Apparatus and method for determining velocity of acoustic waves in earth formations January 4, 1983
The disclosure is directed to an apparatus and method for determining the velocity of acoustic wave energy propagating information surrounding a borehole. In accordance with one form of the apparatus, a transmitter is positioned in the borehole and periodically establishes acoustic wave










 
 
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