Method and apparatus for stage cementing a liner in a well bore having a casing
Patent
·
OSTI ID:5323148
This patent describes an apparatus for stage cementing a liner in a well bore having a casing. It comprises: a liner; a running tool including: a member having a longitudinal bore therethrough; releasable connecting means for releasably connecting the running tool member to the liner; inhibiting means to inhibit premature actuation of the releasable connecting means; retrievable seal means sealing between the running tool member and the liner to accommodate axial movement of the running tool member relative to the liner while avoiding communication between the inside and outside of the liner throughout the length of the liner below the retrievable seal means and above where cement is discharged from the liner into the well bore; the liner having longitudinally aligned, telescopically arranged upper and lower liner portions with seal means therebetween and port means in each of the portions for communicating the interior of the liner with the well bore; and releasable lock means to lock the liner portions against relative longitudinal movement and thereby avoid premature communication through the port means in the upper liner portion. The releasable lock means responsive to relative movement between the liner portions to release for accommodating relative longitudinal movement between the portions whereby the port means in the upper liner portion may communicating with the well bore for discharge of the cement form the liner to the well bore.
- Assignee:
- Texas Iron Works, Inc., Houston, TX
- Patent Number(s):
- US 4854386
- Application Number:
- PPN: US 226898A
- OSTI ID:
- 5323148
- Country of Publication:
- United States
- Language:
- English
Similar Records
Two-way plugs for wells
Retrievable well bore tubular member packer arrangement and method
Well testing tool
Patent
·
Tue May 29 00:00:00 EDT 1990
·
OSTI ID:6754646
Retrievable well bore tubular member packer arrangement and method
Patent
·
Mon Feb 05 23:00:00 EST 1990
·
OSTI ID:6916001
Well testing tool
Patent
·
Tue Oct 04 00:00:00 EDT 1977
·
OSTI ID:5338453