Patent ID: 9222334
Filing Date: 2015-12-29
Classification: E21B

Abstract:
1. A method of facilitating delivery of a tool assembly downhole, comprising: positioning a rotatable element valve within a tool string at a location, placing a one-way valve within the rotatable element valve, positioning a second rotatable element valve in the tool string; and placing a second one-way valve in the second rotatable element valve; the rotatable element valve and the one-way valve movable between a first position allowing fluid flow along an internal passage of the tool string only in a first direction and a second position allowing fluid flow along the internal passage of the tool string only in a second direction; providing the rotatable element valve with a port for pressure testing; and pressure testing the tool string at least one of above, below and between the first and second rotatable element valves, the pressure testing providing an indication to an operator whether the rotatable element valves remain in good condition for subsequent deployment downhole.