Back to results
US 8,770,277 B2Granted
Frac head with sacrificial wash ring
AssigneeOil States Energy Services, L.L.C.
InventorDanny Lee Artherholt
Life of this patent
Estimating the term…
Abstract
A frac head is provided with a sacrificial wash ring. The sacrificial wash ring is located above a mixing chamber of the frac head. The sacrificial wash ring protects the frac head body from erosion caused by abrasive frac fluids pumped through the frac head.
Claims20
A frac head, comprising:
- a frac head body having a top end with an axial port and an axial passage that extends though the axial port and the frac head body;
- at least two inlet ports that respectively provide a fluid communication path to the axial passage where fluid streams pumped through the respective inlet ports converge;
- a sacrificial wash ring in the axial passage adjacent a bottom edge of the respective fluid communication paths, the sacrificial wash ring directing fluid streams pumped through the respective inlet ports into a mixing chamber located below the sacrificial wash ring, the sacrificial wash ring having a bottom edge with an annular step on an outer side thereof;
- and
- a wear resistant liner that lines the mixing chamber, a top end of the wear resistant liner being received in the annular step to support the sacrificial wash ring in the axial passage.
2 more elements
A frac head, comprising:
- a frac head body having a top end with an axial port and a axial passage that extends though the axial port and the frac head body;
- at least two inlet ports that respectively provide a fluid communication path to the axial passage;
- a sacrificial wash ring in the axial passage at a bottom edge of the respective inlet ports, the sacrificial wash ring having a top surface that is inclined at an angle that is similar to an angle of inclination of the respective inlet ports so that frac fluid flows past a bottom edge of each fluid communication path;
- a cylindrical central surface that forces respective frac fluid streams to converge as they enter a mixing chamber below the sacrificial wash ring;
- and, a bottom surface that is downwardly and outwardly inclined to permit the converging frac fluid streams to rapidly expand as they enter the mixing chamber, the sacrificial wash ring further having a bottom edge with an annular step on an outer side thereof;
- and
- a wear resistant liner that lines the mixing chamber, a top end of the wear resistant liner being received in the annular step to support the sacrificial wash ring in the axial passage.
4 more elements
A frac head, comprising:
- a frac head body having a top end with an axial port and an axial passage that extends though the axial port and the frac head body;
- at least two inlet ports that respectively provide a fluid communication path to the axial passage;
- a sacrificial wash ring in the axial passage at a bottom edge of the respective inlet ports, the sacrificial wash ring having a top surface and a bottom surface, the top surface being substantially parallel with a central axis of the frac head, and the bottom surface being inclined at an angle of about 45° with respect to the central axis of the frac head, the sacrificial wash ring further comprising a bottom edge with an annular step on an outer side thereof;
- and
- a wear resistant liner that lines the mixing chamber, a top end of the wear resistant liner being received in the annular step to support the sacrificial wash ring in the axial passage.
2 more elements
Dependencies are inferred from the claim text.