Protection of well casing for in situ combustion

Patent · Tue Apr 27 04:00:00 EDT 1965

OSTI ID:6623681

Parker, H W

This is a process and apparatus for protecting the casing and tubing of a well extending through a shallow stratum, being produced by in-situ combustion, to a deeper producing formation. The tubing-casing annulus is packed off below the upper stratum to form a cooling zone or chamber around the well casing. The annulus above the packer is filled with a liquid coolant such as water to a level at least as high as the top of the stratum in which in-situ combustion is being conducted. The annulus chamber may extend all the way to the wellhead so that adequate condensation space is provided in the cool annulus nearer the wellhead. A section of a larger casing and a smaller casing may be fabricated aboveground with the coolant sealed in it and the section is then set at the proper level in the well so that the coolant is opposite the upper stratum being treated by in-situ combustion. (8 claims)

• Assignee: Phillips Petroleum Co.
• Patent Number(s): US 3180411
• OSTI ID: 6623681
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030900 -- Natural Gas-- Artificial Stimulation
Plowshare-- (-1989)
CHEMICAL REACTIONS
COMBUSTION
COOLING
ENERGY SOURCES
ENGINEERING
ENHANCED RECOVERY
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
IN-SITU COMBUSTION
IN-SITU PROCESSING
NATURAL GAS
NATURAL GAS WELLS
OIL WELLS
OXIDATION
PETROLEUM
PROCESSING
RECOVERY
RESERVOIR ENGINEERING
THERMOCHEMICAL PROCESSES
WELL CASINGS
WELLS