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

Claim 8:
9. A method comprising:
providing a stage cementing tool comprising:
a mandrel defining a central flow passage therethrough and having a plurality of circumferentially spaced first longitudinal slots and a plurality of circumferentially spaced second longitudinal slots defined therein, the plurality of circumferentially spaced second longitudinal slots being longitudinally spaced from the plurality of circumferentially spaced first longitudinal slots;
an opening sleeve disposed in the mandrel in a first position covering the plurality of circumferentially spaced first longitudinal slots and movable relative to the mandrel to allow communication through the plurality of circumferentially spaced first longitudinal slots;
a setting sleeve disposed about the mandrel and connected to the opening sleeve with drive pins extending through the circumferentially spaced first longitudinal slots;
a drive sleeve disposed in the mandrel above the opening sleeve; and
drive pins extending through at least some of the plurality of circumferentially spaced second longitudinal slots connecting the drive sleeve with a closing sleeve disposed about the mandrel, a portion of the closing sleeve being sandwiched between the mandrel and the setting sleeve;

lowering the stage cementing tool into a wellbore on a casing to a desired location; and
dropping a cancellation plug into the casing to cancel cementing through the stage cementing tool without establishing communication between the central flow passage and the well.