Method for forming boreholes

Patent · Tue Aug 12 04:00:00 EDT 1986

OSTI ID:5310466

Goodhart, M E

A method is described of boring a well hole into a target zone in a formation comprising the steps of boring an essentially vertical hole to at least a predetermined depth below the target zone in the formation, the vertical hole being laterally displaced from the target zone, lowering via the vertical hole drilling apparatus including a mud pressure driven motor and drilling bit to the predetermined depth, applying pressurized drilling mud from the vertical hole to the mud motor, and mechanically boring with the mud motor and the drilling bit initially in an upward direction from the vertical hole a deviated hole into the target zone.

• Assignee: Hydril Co., Los Angeles, CA
• Patent Number(s): US 4605076
• OSTI ID: 5310466
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BOREHOLES
CAVITIES
DEPTH
DIMENSIONS
DIRECTIONAL DRILLING
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DRILLING FLUIDS
EQUIPMENT
FLUIDS
HOISTING
MATERIALS HANDLING
MOTORS
NATURAL GAS WELLS
OIL WELLS
PNEUMATIC MOTORS
PRESSURIZING
WELL DRILLING
WELLS