Method and apparatus for improving oil production in oil wells

Patent · Tue Jun 23 04:00:00 EDT 1987

OSTI ID:6311121

Vogen, W V

This patent describes a method for improving the production of oil from appropriate wells, comprising: attaching the lower end of an elastic steel column to the upper end of a liner; the upper end of the column extending to the top of the well and above; attaching the upper end of the column to a reaction mass vertically above through vertically mounted compression spring means and, in parallel with a vertically mounted servo-controlled hydraulic cylinder-piston assembly; applying a substantially constant upward load to the reactions mass; reciprocating the piston of the hydraulic cylinder under servo control to apply vertical vibration to the upper end of the column with resultant vertical displacement of the upper end of the column; developing a displacement signal while developing an electrical, pressure-differential signal corresponding to the pressure across the cylinder-piston assembly; adjusting the vertical vibration through the servo control in accordance with the displacement signal and the pressure differential signal: to seek and find an appropriate resonant frequency for the column in the range of 5 Hz to 25 Hz; and maintaining the frequency at resonance.

• Assignee: URS Corp., San Mateo, CA
• Patent Number(s): US 4674571
• OSTI ID: 6311121
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ALLOYS
COMPRESSION
CONTROL
CONTROL EQUIPMENT
CYLINDERS
ELECTRICAL EQUIPMENT
EQUIPMENT
FABRICATION
FASTENING
FREQUENCY CONTROL
FREQUENCY RANGE
HYDRAULIC EQUIPMENT
HZ RANGE
IRON ALLOYS
IRON BASE ALLOYS
JOINING
LINERS
MACHINE PARTS
MECHANICAL VIBRATIONS
OIL WELLS
PISTONS
PRODUCTION
RESONANCE
SERVOMECHANISMS
SIGNALS
SPRINGS
STEELS
STIMULATION
WELL STIMULATION
WELLS