Patent ID: 11927068
Assignee: CAMERON INTERNATIONAL CORPORATION
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 19:
20. A method, comprising:
moving a flapper valve within a cavity of a frac head between a closed position and an open position relative to a first port in response to movement of an axial member, wherein the frac head comprises a top side configured to face a first valve and a bottom side configured to face a wellbore, wherein the frac head comprises the first port through the top side, a second port through the bottom side, a third port through a lateral side, and the cavity between the first, second, and third ports, wherein a first fluid flow path extends through the cavity between the first and second ports along a wellbore axis of the wellbore, a second fluid flow path extends between the cavity and the third port in a lateral direction crosswise to the first fluid flow path and the wellbore axis, the cavity is enlarged at least relative to the first and second ports, and the axial member is disposed in the first port; and
passing a tool through the first and second ports and a bore in the axial member when the flapper valve is disposed in the open position.