Boring or penetrating the earth – Processes – Boring curved or redirected bores
Patent
1975-07-17
1976-05-25
Purser, Ernest R.
Boring or penetrating the earth
Processes
Boring curved or redirected bores
64 2P, 175 82, 285118, 285223, E21B 708
Patent
active
039586499
ABSTRACT:
Two methods and four mechanisms are disclosed for drilling at right angles to a vertical well at any location or depth in the well. The drilling mechanisms each comprises a flexible spring biased telescopic fluid conduit having a turbodrill on the lower end thereof for extending from an opening in the side of an elongated cylindrical housing for drilling at right angles to the well. The flexible spring biased telescopic fluid conduit comprises a plurality of axially aligned spools with cylinders interconnecting the adjacent ends of adjacent spools and with a compression spring in each cylinder between the two adjacent spool ends for permitting flexibility and telescopic action of the fluid conduit while resisting high compression and torque loads. Rubber-like rings and serrations increase the friction between the telescopic spools and cylinders, and tongue-and-groove splines between the flexible spring biased telescopic fluid conduit and the elongated cylindrical housing increase friction for receiving torque loads in the right angled drilling mechanism. A method for drilling in a transverse direction from a vertical well and a method for forming and assembling a drilling mechanism for drilling at right angles to a vertical well in a well are disclosed.
REFERENCES:
patent: 860013 (1907-06-01), Church
patent: 2296161 (1942-09-01), Hall
patent: 2390646 (1945-12-01), Hays
patent: 2441881 (1948-05-01), Hays
patent: 2516383 (1950-07-01), Hays
patent: 2895314 (1959-07-01), Helm
patent: 3446297 (1969-05-01), Cullen et al.
Bull George H.
Bull Paul D.
Cunningham James E.
Bull George H.
Cunningham James E.
Favreau Richard E.
Nichols Theron H.
Purser Ernest R.
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