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US 12,460,507 B2Granted
Apparatus and method of reducing surge when running casing
AssigneeHalliburton Energy Services, Inc.
InventorsNathan Barrett Wyatt, Lonnie Carl Helms, Tor Sigve Saetre, Frank Vinicia Acosta Villarreal
Life of this patent
Estimating the term…
Abstract
A downhole tool has a tool body with a tool body outer diameter. A liner with a liner outer diameter is connected to the tool body. The tool body has a plurality of diverter ports defined in a wall thereof. A closing sleeve is movable in the tool body to close the diverter ports. A closing seat attached to the closing sleeve is a frangible closing seat.
Claims20
A downhole tool comprising:
- a tool body having a tool body outer diameter;
- a liner connected to the lower end of the tool body, the liner having a liner outer diameter that is larger than the tool body outer diameter;
- a plurality of diverter ports defined in a wall of the tool body;
- a closing sleeve detachably connected in the tool body in a first position;
- and
- a frangible seat disposed in the closing sleeve and positioned to receive a closing ball, the closing sleeve detachable from the tool body and movable to a second position upon the application of a first pressure above the engaged closing ball, the frangible seat being breakable into a plurality of pieces that pass through the liner upon the application of a second pressure after the closing sleeve has moved to the second position in the tool body.
3 more elements
A method of lowering a liner in a well comprising:
- connecting a liner to a diverter tool;
- lowering the liner into the well with a drill string connected to the diverter tool;
- closing a plurality of ports in the diverter tool with a closing sleeve when the liner has reached a desired location in the well;
- and
- shattering a first frangible seat in the diverter tool into a plurality of pieces that pass through the liner after the plurality of ports are closed.
2 more elements
A downhole tool for use in a well comprising:
- a liner having a first outer diameter;
- a diverter tool having a second outer diameter connected to the liner, the diverter tool comprising:
- a diverter body, the diverter body defining a central flow passage and a plurality of diverter ports, the diverter ports communicating the central flow passage with an annulus between the well and the diverter body;
- a first closing seat disposed in the diverter body;
- and
- a closing sleeve detachably connected in the diverter body and movable from a first position in the diverter body to a second position in which the closing sleeve prevents flow through the diverter ports, the closing sleeve movable from the first to the second position as a result of pressure in the diverter tool above a closing ball engaged with the first closing seat, the first closing seat comprising a frangible closing seat that shatters into a plurality of pieces that pass through the liner after the closing sleeve moves to the second position.
3 more elements
Dependencies are inferred from the claim text.