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:
Aug. 21, 1990
Filed:
Mar. 31, 1989
David O Falk, Denver, CO (US);
Marathon Oil Company, Findlay, OH (US);
Abstract
A method of preventing flow of formation fluid and crude oil into a well bore during an electric resistivity logging operation. A readily flowable liquid gellation composition containing a breaker is of contrasting resistivity to that of the formation water. Fluids in the well bore are displaced by the liquid composition and the composition is allowed to gel. The gel may be of a highly viscous, moderately flowable state, which prevents ingress of formation fluids and crude oil but permits logging equipment to be moved therethrough. Alternatively, the gel in the well bore may be removed while leaving the gel in the adjoining formation in place, and the removed gel replaced with fresh water prior to the logging operation. After effecting the log a breaker in the gel composition causes the gel to revert to a liquid, which is removed from the well bore.