Well rig

Details Well rig Well rig

1975-03-03

1976-10-19

Purser, Ernest R.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

173151, 173159, 254 93R, 60484, E21B 302, E21B 1908

Patent

active

039865649

ABSTRACT:
An improved, multipurpose oil well rig employing hydraulically actuable components. Two, three, or four or more piston cylinder fluid motors are provided in the rig lift system, powered either by a power unit having high pressure, low volume pumping characteristics for heavy loads and low pressure, high volume pumping characteristics for light loads or by a power unit incorporating a stored energy accumulator. Novel dump/check safety and control valve means are provided in either power unit. All conventional oil well rig mechanisms are eliminated. Specifically, there are no drawworks, drums, gears, chains, sprockets, clutches, travelling blocks, mechanical brakes, transmissions or line spoolers.

REFERENCES:
patent: 1790913 (1931-02-01), Grau et al.
patent: 2320874 (1943-06-01), Lehmann
patent: 2502895 (1950-04-01), Shaffer
patent: 3636969 (1972-01-01), Jacobellis
patent: 3792836 (1974-02-01), Bender

Affiliated with

Also associated with

Rating

Well rig does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Well rig, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well rig will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-97481