Method for insulating a well
Patent
·
OSTI ID:6275777
A process is described for thermally insulating elements of a well such as the tubing string. An aqueous solution of a water-soluble silicate is introduced into the annular space between the well and the tubing string. Steam is injected into the tubing string to boil the silicate solution and deposit a coating of alkali metal silicate on the tubing string. Excess silicate solution remaining in the annular space is displayed by a fluid having a low solubility for the silicate coating. A preferred use of this process is in insulating a conventional steam injection well. (10 claims)
- Assignee:
- Esso Production Res Co.
- Patent Number(s):
- US 3664424
- OSTI ID:
- 6275777
- Country of Publication:
- United States
- Language:
- English
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