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. 15, 2021
Filed:
Mar. 19, 2018
George James Melenyzer, Cypress, TX (US);
George James Melenyzer, Cypress, TX (US);
FRONTIER OIL TOOLS, Houston, TX (US);
Abstract
In a first aspect, a bidirectional formation protection valve includes: a tubular body having an inner diameter defining a fluid flow path therethrough and being adapted to be sealably disposed within a wellbore; an uphole valve disposed within the inner diameter of the tubular body to control fluid flow therethrough, the uphole valve being biased to close the fluid flow path against a first pressure and adapted to be opened upon receiving a stinger in the inner diameter, and a downhole valve disposed within the inner diameter of the tubular body to control fluid flow therethrough, the downhole valve being biased to close the fluid flow path against a second pressure and adapted to be opened upon receiving a stinger in the inner diameter. The first and second pressures are an uphole pressure from kill fluids and a downhole pressure from formation fluids.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile