Well fracturing method
Patent
·
OSTI ID:6345836
A well fracturing method employs liquid carbon dioxide as a part of the fracturing fluid. In the process, the fracturing fluid and propping agent slurry is prepared from sand, glass beads, metal particles, hard resin particles, and the like; silica flour, water, brines, crude oil, kerosine, naphtha and the like; and a gelling agent. The slurry is mixed with liquid carbon dioxide, and the resulting mixture is injected into the formation at fracturing pressure. About 5-7 volume units of liquid carbon dioxide to one unit of the slurry is used at fracturing pressure. Subsequently, the fracturing pressure is released at the wellhead whereby a substantial portion of the injected gelled liquid is carried back out of the well by the carbon dioxide which, upon release of pressure, tends to become a gas. (10 claims)
- Assignee:
- TUL; EDB-81-078492
- Patent Number(s):
- US 3310112
- OSTI ID:
- 6345836
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLOIDS
COMMINUTION
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FRACTURING
FUELS
GELS
MIXTURES
OIL WELLS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PROPPING AGENTS
WELL COMPLETION
WELLS
020300* -- Petroleum-- Drilling & Production
ADDITIVES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLOIDS
COMMINUTION
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FRACTURING
FUELS
GELS
MIXTURES
OIL WELLS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PROPPING AGENTS
WELL COMPLETION
WELLS