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:
Apr. 06, 1976
Filed:
Oct. 04, 1974
Derry D Sparlin, Ponca City, OK (US);
Walter H Fertl, Ponca City, OK (US);
Gary C Young, Pinole, CA (US);
Continental Oil Company, Ponca City, OK (US);
Abstract
A method for locating and identifying sand producing zones in friable, unconsolidated sandstone formations of a subterranean reservoir traversed by a well bore. The method comprises the following steps: A. introducing into said reservoir through said well bore, a radioactive material which is preferentially retained in the porous portions of the formation surrounding said well bore; B. passing a radioactivity detection means through the well bore and recording the measurement of radioactivity of said reservoir; C. returning the reservoir to production; and, D. passing a radioactivity detection means through said well bore and recording the measurement of radioactivity of said formation for a second time and correlating the measurements of radio activity of each measurement with measurement of depth to thus locate sand producing zones in said reservoir.