Back to results
US 11,686,176 B2Granted
Circulation sleeve and method
AssigneeBaker Hughes Oilfield Operations LLC
InventorWilfred Provost
Life of this patent
Estimating the term…
Abstract
A circulation sleeve including a housing, a mandrel disposed at least partially within the housing, the mandrel and the housing together configured to respond to pressure applied to the sleeve from radially outward of the housing by moving the housing to a position relative to the mandrel where a treatment port through a radial wall of the mandrel is exposed outside of the housing and to respond to fluid flow rate within the mandrel to move the housing to a position relative to the mandrel where the treatment port is disposed within the housing.
Claims15
A circulation sleeve comprising:
- a housing;
- a mandrel disposed at least partially within the housing, the mandrel and the housing together configured to respond to pressure applied to the sleeve from radially outward of the housing by moving the housing to a position relative to the mandrel where a treatment port through a radial wall of the mandrel is fully exposed outside of the housing and to respond to fluid flow rate within the mandrel to move the housing to a position relative to the mandrel where the treatment port is fully disposed within the housing;
- and
- an axial assistance system that assists the movement of the mandrel relative to the housing between positions where the port is fully exposed and where the port is fully disposed within the housing.
1 more element
Dependencies are inferred from the claim text.