Casing lined oil or gas well
Patent
·
OSTI ID:5423489
This patent describes an improvement in an oil or gas well having a well bore which penetrates a production zone and a casing string which is anchored in the wellbore by a column of cement bonded to the casing string and well bore. The improvement comprises: at least one axially extendable connector installed as a part of the casing string opposite the well bore above the formation, and at least one axially contractible connector installed as part of the casing string opposite the zone, the extendable connector including a first tubular member having one end telescopically and sealably reciprocable within the end of a second tubular member between contracted and extended positions, and means connecting the first member in its contracted position, the first member having an outer conical surface and the connection begin releasable to permit the conical surface to move away from the adjacent surface of the cement column as the casing string above the zone is placed in tension.
- Assignee:
- Davis-Lynch Inc., Houston, TX (United States)
- Patent Number(s):
- US 5085273; A
- Application Number:
- PPN: US 7-593686
- OSTI ID:
- 5423489
- Country of Publication:
- United States
- Language:
- English
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