Thermal shield for drilling motors

Details Thermal shield for drilling motors Thermal shield for drilling motors

1988-12-07

1990-05-22

Dang, Hoang C.

Boring or penetrating the earth

With heating or cooling drilling fluid

175107, 175324, E21B 402

Patent

active

049269496

ABSTRACT:
A thermal jacket shield for a drilling motor which permits drilling operations in high temperature wells without failure of the motor. The thermal shield includes a multiple passageway casing to shroud the motor and through which is circulated drilling fluid used to operate the drilling motor. The motor is positioned within concentric inner and outer shells which form a fluid annulus through which the fluid is circulated. An intermediate housing sub connected to the lower end of the drilling motor includes a nozzle through which a controlled quantity of drilling fluid is passed into the annulus formed by the inner and outer annular shells. Outlet ports in the outer shell allow the drilling fluid to flow to the exterior of the tool. As a result, cooling fluid is continuously passed through the jacket shield to maintain the operating temperature of the motor at an acceptable temperature.

REFERENCES:
patent: 3291230 (1966-12-01), Cullen et al.
patent: 3598187 (1971-08-01), Mothre
patent: 3650337 (1972-03-01), Andrews et al.
patent: 3667556 (1972-06-01), Henderson
patent: 3903974 (1975-09-01), Cullen
patent: 4011917 (1977-03-01), Tiraspolsky et al.
patent: 4143722 (1979-03-01), Driver
patent: 4265323 (1981-05-01), Juergens
patent: 4534427 (1985-08-01), Wang et al.
patent: 4646856 (1987-03-01), Dismukes

Affiliated with

Also associated with

Rating

Thermal shield for drilling motors does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2127167