Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent
1988-06-27
1990-09-04
Dang, Hoang C.
Boring or penetrating the earth
Processes
Boring curved or redirected bores
33304, 175 45, 175 62, 175 73, 175162, 175220, 175400, E21B 706, E21B 1000
Patent
active
049536389
ABSTRACT:
A method of boring a hole in the earth such as for passing under obstacles, not limited, but including roadways, rivers, dikes, canals or other inexcessible areas where it is impossible to trench a ditch including the steps of advancing a rotating drill string in a direction inclined to the earth's surface to establish a borehole, stopping the rotation and advancement of the drill string, aligning the drill pipe so that the drill bit is inclined at an angle relative to the axis of the drill string towards a new direction desired for the borehole, advancing the drill string and drill bit a short distance without rotation, resuming rotation advancement of the drill string for a short distance, sequentially repeating the steps of advancing the rotationally aligned drill string without rotation to move the drill bit in the newly desired direction, followed by rotation with simultaneous advancement until the new direction of drilling is achieved, after which, until a still different direction is desired, drilling is continued by simultaneously rotating and advancing the drill string.
REFERENCES:
patent: 1766202 (1930-06-01), Thompson
patent: 2122063 (1938-06-01), Hughes
patent: 2196940 (1940-04-01), Potts
patent: 2324102 (1943-07-01), Miller et al.
patent: 2350986 (1944-06-01), Collins
patent: 2686660 (1954-08-01), Storm
patent: 2903239 (1959-09-01), Standridge
patent: 3451491 (1969-06-01), Clelland
patent: 3746106 (1973-07-01), McCullough et al.
patent: 4024721 (1977-05-01), Takada et al.
patent: 4306627 (1981-12-01), Cheung et al.
patent: 4674579 (1987-06-01), Geller et al.
patent: 4679637 (1987-07-01), Cherrington et al.
patent: 4694913 (1987-09-01), McDonald et al.
patent: 4790394 (1988-12-01), Dickinson, III et al.
Texas Mill Supply, Inc. advertisement for Curv-O-Mark (undated).
Dang Hoang C.
The Charles Machine Works, Inc.
LandOfFree
Method of and apparatus for drilling a horizontal controlled bor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of and apparatus for drilling a horizontal controlled bor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for drilling a horizontal controlled bor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-434420