Hydraulic core cutting motor

Details Hydraulic core cutting motor Hydraulic core cutting motor

1986-05-22

1987-11-24

Novosad, Stephen J.

Boring or penetrating the earth

Means carried by housing insertable in inaccessible hole to...

175 58, 418268, F21B 4902, F04C 239

Patent

active

047082135

ABSTRACT:
An improved hydraulic motor for downhole oil and gas wells to drive a sidewall core cutting apparatus comprising; a motor housing having a fluid inlet channel and a fluid outlet channel directed essentially parallel to each other and tangentially intersecting a rotor cavity with the motor housing containing an eccentrically positioned rotor with radially movable vanes within the rotor in a manner such that the fluid flow enters the cavity essentially tangentially and flows around the rotor and exits tangentially on the other side of the cavity. Such a hydraulic motor exhibits significant improvement in torque and power output at a given hydraulic power input when compared to previous hydraulic motors employed in such applications.

REFERENCES:
patent: 2312961 (1943-03-01), Cowherd
patent: 2380819 (1945-07-01), Allbaugh
patent: 4354558 (1982-10-01), Jageler et al.
patent: 4354809 (1982-10-01), Sundberg
patent: 4355965 (1982-10-01), Lowther

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