Rotary shafts – gudgeons – housings – and flexible couplings for ro – Flexible coupling between fluid-conducting rotary shafts – Relative angular displacement of axes of shafts
Reexamination Certificate
2000-04-21
2001-10-16
Browne, Lynne H. (Department: 3629)
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Flexible coupling between fluid-conducting rotary shafts
Relative angular displacement of axes of shafts
C464S018000, C464S149000, C464S157000, C464S183000
Reexamination Certificate
active
06302797
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
There are no other applications that are related to this application.
BACKGROUND OF THE INVENTION
This invention is related to tools used to bore holes in the earth such as drill pipe, flexible drill pipe, flexible shafts, drill rods and shafts.
PAIOR ART
There has been great interest in increasing the production from oil and gas formations. One method for doing this is the drilling of horizontal drain holes in the oil or gas formations to increase the pore drainage. To be able to drill the horizontal drain holes requires drill pipe that can drill a radius from the vertical to the horizontal. The shorter the radius the more horizontal drain holes can be put at different levels in an oil or gas formation. Also the shorter the radius the more thin oil or gas formation can benefit from horizontal drain hole drilling.
SUMMARY OF THE INVENTION
An objective of the invention is to provide a flexible drill pipe, which can drill angled or curved holes in earth formations.
An objective of the invention is to provide a flexible drill pipe that can drill and operate from around ultra short radii from the vertical to the horizontal.
An objective of the invention is to provide a flexible drill pipe that can drill horizontal drain holes in earth formations from around ultra short radii from the vertical to the horizontal.
An object is to provide a flexible drill pipe with an outside covering of short tube sections with enter locking gear teeth assembled end to end over the length of the flexible drill pipe and carry the torque load required to operate a drill bit.
An object of the invention is to provide a means so the tube sections described above can operate and not let the interlocking gear teeth of the tube section separate.
REFERENCES:
patent: 2709070 (1955-05-01), Bielstein
patent: 4031713 (1977-06-01), Driver
patent: 4062412 (1977-12-01), McIlvanie
patent: 4149391 (1979-04-01), Driver
patent: 4233820 (1980-11-01), Driver
Browne Lynne H.
Dunwoody Aaron
LandOfFree
Flexible drill pipe does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flexible drill pipe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible drill pipe will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2602454