The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 1984
Filed:
Jun. 23, 1982
Philippe Chevalier, Verrieres le Buisson, FR;
Schlumberger Technology Corporation, Houston, TX (US);
Abstract
The invention relates to a method of measuring the absorption of a photon flux in the fluid flowing in an oil well, for the purpose of determining the composition of the fluid. The invention also relates to a logging sonde for implementing such method. The photon flux produced by a source such as an X-ray generator irradiates the entire volume of fluid surrounding the sonde, and the energy of the photons is lower than a predetermined value, preferably 100 kev, so that the walls of the well are capable of substantially absorbing the photons impinging thereon. The photon flux includes an energy level at which photoelectric absorption is significant and another energy level at which Thomson scattering is predominant. Measurements of the photoelectric absorption coefficient and density are used to determine water, oil, and salinity.