Insulating a casing and tubing string in an oil well for a hot fluid drive
Patent
·
OSTI ID:5432996
Tubing and casing strings in a well penetrating an oil stratum to be produced by hot fluid drive, such as with steam, are coated on the walls forming the annulus by packing off the annulus adjacent or near the stratum, filling the annulus with an aqueous solution of a water-soluble inorganic salt, such as borax, sodium carbonate, sodium sulfate, and mixtures thereof, preferably containing a binder, and injecting a hot fluid through the tubing string into the stratum to evaporate water from the solution in the annulus while venting steam at the wellhead. A substantial coat of the salt forms on the walls of the annulus. (4 claims)
- Assignee:
- Phillips Petroleum Co.
- Patent Number(s):
- US 3451479
- OSTI ID:
- 5432996
- Country of Publication:
- United States
- Language:
- English
Similar Records
Method for insulating a well
Production of hydrocarbons by fracturing and fluid drive
Steam injection system for use in a well
Patent
·
Tue May 23 00:00:00 EDT 1972
·
OSTI ID:6275777
Production of hydrocarbons by fracturing and fluid drive
Patent
·
Tue Apr 27 00:00:00 EDT 1965
·
OSTI ID:6625729
Steam injection system for use in a well
Patent
·
Tue Jul 11 00:00:00 EDT 1978
·
OSTI ID:6071321