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US 11,028,665 B2Granted
Method and apparatus for hydraulic fracturing
AssigneeCameron International Corporation
InventorThomas G. Roesner
Life of this patent
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Abstract
A method for fracking a well includes inserting a downhole tool into the well via a conveyance string through a wellhead assembly having a wellhead bore. The method also includes surrounding, at least partially, the conveyance string with a sleeve that at least extends below a portion of an inlet of the wellhead assembly, wherein the inlet intersects the wellhead bore. The method further includes injecting pressurized fluid into the well via the inlet of the wellhead assembly while retrieving the downhole tool from the well.
Claims20
A method, comprising:
- directing a fluid flow through an inlet passage of a wellhead assembly in a first direction radially inward toward a central bore of the wellhead assembly;
- and
- redirecting the fluid flow from the first direction to a second direction into the central bore via a sleeve disposed coaxial with the central bore, wherein the sleeve axially overlaps the inlet passage, the sleeve is configured to block direct impact of the fluid flow in the first direction against a line extending through the central bore and a central sleeve bore of the sleeve to a downhole position, the sleeve comprises an enlarged portion disposed along the second direction of the fluid flow axially downstream of the inlet passage, and the second direction of the fluid flow extends at least partially through and/or externally along the enlarged portion of the sleeve outside of the central sleeve bore to a distal end of the sleeve.
A method, comprising:
- blocking, via a sleeve disposed coaxial with a central bore of a wellhead assembly, a direct impact of a radially directed fluid flow against a line extending through and contacting an interior of the sleeve and the central bore to a downhole position, wherein an exterior of the sleeve receives the direct impact of the radially directed fluid flow along an axis of an inlet passage;
- and
- redirecting the radially directed fluid flow as an axially directed fluid flow along the exterior of the sleeve to a distal end of the sleeve.
A system, comprising:
- a wellhead assembly, comprising:
- a body;
- a central bore in the body;
- an inlet passage in the body, wherein the inlet passage is configured to direct a fluid flow in a first direction radially inward toward the central bore;
- and
- a sleeve disposed in the body coaxial with the central bore, wherein the sleeve axially overlaps the inlet passage, the sleeve is configured to redirect the fluid flow from the first direction to a second direction into the central bore, the sleeve is configured to block direct impact of the fluid flow in the first direction against a line extending through the central bore and the sleeve to a downhole position, the central bore comprises an enlarged bore portion disposed about the sleeve axially downstream from the inlet passage, and the enlarged bore portion is configured to pass the fluid flow in the second direction along the sleeve into the central bore.
3 more elements
Dependencies are inferred from the claim text.