Method of cutting a notch in an underground formation penetrated by a well

Patent · Tue Jul 06 04:00:00 EDT 1965

OSTI ID:6695151

Huitt, J L; Pekarek, J L

This is a method of hydraulically cutting a notch in a subsurface formation penetrated by a well for the initiation of a fracture. A high-velocity stream of a cutting fluid is discharged from a nozzle to cut a circumferential opening in the casing wall. This opening has a width at least 4 times the diameter of the nozzle at the desired depth. Thereafter the nozzle is centered opposite the circumferential opening and a high-velocity stream of a cutting fluid is directed through the opening in the casing to cut a notch in the formation. The nozzle is rotated about a vertical axis and in a horizontal plant so as to direct the high-velocity stream through the opening while discharging the high- velocity stream of cutting fluid from the nozzle. (4 claims)

• Assignee: Gulf Research and Development Co.
• Patent Number(s): US 3193012
• OSTI ID: 6695151
• 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)
COMMINUTION
CUTTING TOOLS
EQUIPMENT
FLUID INJECTION
FRACTURING
GEOLOGIC DEPOSITS
HYDRAULIC EQUIPMENT
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NATURAL GAS FIELDS
NOZZLES
OIL FIELDS
PETROLEUM DEPOSITS
RESOURCES
STIMULATION
TOOLS
WELL STIMULATION