Patent ID: 11885197
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A stage cementing tool for use in a wellbore comprising:
a mandrel having a plurality of circumferentially spaced first longitudinal slots and a plurality of circumferentially spaced second longitudinal slots, the plurality of circumferentially spaced second longitudinal slots being spaced longitudinally from the plurality of circumferentially spaced first longitudinal slots;
an opening sleeve disposed in the mandrel in a first position and movable relative thereto;
a setting sleeve disposed about the mandrel in a first position and movable relative thereto;
the setting sleeve having a plurality of flow ports defined therethrough and being connected to the opening sleeve with connecting pins extending through the longitudinal slots in the plurality of the circumferentially spaced first longitudinal slots, the opening sleeve and setting sleeve movable together;
a drive sleeve disposed in the mandrel above the opening sleeve and movable relative to the mandrel; and
a closing sleeve disposed about the mandrel and connected to the drive sleeve with drive pins extending through the plurality of circumferentially spaced second longitudinal slots, the drive sleeve and closing sleeve movable together, a portion of the closing sleeve being sandwiched between the mandrel and the setting sleeve, the flow ports in the setting sleeve being covered by the closing sleeve in the first position of the setting sleeve.