US 11,867,013 B2
Flow diversion valve for downhole tool assembly
Richard T. Caminari, The Woodlands, TX (US)
Filed by Wellbore Integrity Solutions LLC, Houston, TX (US)
Filed on Aug. 26, 2021, as Appl. No. 17/458,481.
Claims priority of provisional application 63/205,634, filed on Aug. 26, 2020.
Prior Publication US 2022/0065062 A1, Mar. 3, 2022
Int. Cl. E21B 29/00 (2006.01); E21B 34/14 (2006.01); E21B 41/00 (2006.01)
CPC E21B 29/002 (2013.01) [E21B 34/14 (2013.01); E21B 41/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A downhole tool assembly comprising a plurality of tools arranged for coupling to a drill or work string for being lowered into a wellbore and supplied with fluid under pressure, the plurality of tools comprising a first tool, a second tool, and an externally actuatable flow diversion valve positioned between the first and second tools for controlling fluid flow to at least the second tool, the externally actuatable flow diversion valve comprising:
a body having an upper end and a lower end configured for communicating fluid received by the downhole tool assembly through the body along a flow path extending from the upper end to the lower end;
a valve interposed in the flow path to control fluid flow through the body;
at least one moveable switch comprising an actuation member that extends beyond an outer diameter of the body under the influence of a biasing force, the actuation member being configured to be moved inwardly with respect to the housing against the biasing force by the housing passing from a first casing into a second casing that has an inner diameter smaller than the inner diameter of the first casing, wherein movement of the actuation member actuates the valve to change a rate of fluid flow exiting the lower end of the housing,
wherein:
the valve is configured to have at least first and second fluid flow control states, the first fluid flow control state restricting fluid flow in the fluid flow path relative to fluid flow when the valve is in the second fluid flow control state; and
the valve switches fluid control states from the first fluid control state to the second fluid control state in response to actuation of the valve wherein actuation of the valve occurs in response to inward movement of the actuating member,
wherein:
the actuatable flow diversion valve further comprises a mandrel disposed within the body and having a central bore at least partially defining the fluid flow path;
the mandrel shifts axially within the body in response to movement of the actuating member; and
shifting of the mandrel switches the valve between the at least first and second fluid flow control states.