Fracturing process

Patent · Tue Jul 20 04:00:00 EDT 1965

OSTI ID:6695239

Hill, W A

In a fracturing process method, a particular fracturing fluid made up of liquid carbon dioxide and an aqueous fluid is injected into the formation as a liquid (or liquid suspension when propping agents are used) until maximum penetration has been achieved. The pressure at the wellhead is maintained until the desired action of the treating fluid in the formation has occurred. Thereafter, the wellhead pressure is relieved. The liquids which were injected into the formation flow back into the well and carbon dioxide gas is liberated in the formation as well as suspended in the fluid in the form of bubbles. The bubbles pick up residual oil and other matter as they are carried back into the well by the other matter as they are carried back into the well by the inflowing current of the water. Also, the liberated gas creates a gas lift to discharge the fracture fluid from the formation and return it to the surface, thus providing not only an effective fracturing action but also a means to clean out the formation. (2 claims)

• Assignee: TUL; EDB-81-025486
• Patent Number(s): US 3195634
• OSTI ID: 6695239
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ARTIFICIAL LIFTS
COMMINUTION
FLUID INJECTION
FLUIDS
FRACTURED RESERVOIRS
FRACTURING
GAS INJECTION
GAS LIFTS
GEOLOGIC DEPOSITS
HYDRAULIC FRACTURING
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NATURAL GAS WELLS
OIL FIELDS
OIL WELLS
PETROLEUM DEPOSITS
PROPPING AGENTS
RESERVOIR FLUIDS
RESOURCES
STIMULATION
WELL STIMULATION
WELLS