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:
Jun. 24, 2014
Filed:
Jun. 22, 2012
Dmitry Mikhailov, Moscow, RU;
Alexander Nikolaevich Nadeev, Spring, TX (US);
Valery Vasilievich Shako, Domodedovo, RU;
Nikita Ilyich Ryzhikov, Moscow, RU;
Dmitry Mikhailov, Moscow, RU;
Alexander Nikolaevich Nadeev, Spring, TX (US);
Valery Vasilievich Shako, Domodedovo, RU;
Nikita Ilyich Ryzhikov, Moscow, RU;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A water-soluble salt of a metal with a high atomic weight is selected as an X-ray contrast substance providing a selective ion-exchange reaction with a clay. The salt has a general formula RM, where Ris selected from a group consisting of Ba; Sr; Tl; Rb. . . , and Mis selected from a group consisting of Cl; NO; OHn; CH3COO, SO; . . . . The X-ray contrast substance is injected into a core sample. Upon completion of the selective ion exchange reaction a non-contrast displacing agent is injected into the sample. The sample is scanned by computer X-ray microtomography. An area of interest and a reference cross-section are selected at the obtained computer tomography image. Grayscale histograms in cross-sections of the sample are obtained. Spatial distribution and concentration of the clay is estimated by means of histograms analysis starting from the reference cross-section histogram.