Method and apparatus for sinking a cased borehole for producing

Details Method and apparatus for sinking a cased borehole for producing Method and apparatus for sinking a cased borehole for producing

1978-08-07

1980-05-13

Taylor, Dennis L.

Boring or penetrating the earth

With below-ground tool drive prime mover

With below-ground feed means

173 33, 175171, 175292, 405232, E21B 308, E21B 310

Patent

active

042024161

ABSTRACT:
Method for sinking a cased borehole for producing cased pile foundations. The method uses an apparatus comprising a crane, a drilling appliance capable of being lowered into the borehole and a tube extraction machine with double-acting lifting cylinders for increasing the drilling pressure and for extracting the drop tube after the pile has been concreted. The drilling appliance is capable of producing a borehole with a larger diameter than that of the drop tube and can be fixed to the drop tube by means of a clamping device for withstanding the torque of the motor used for driving the drilling tool. In the method, the drop tube is axially secured and is prevented from locating with respect to the ground, a section of borehole having a greater diameter than the diameter of the drop tube is drilled, and subsequently the axial securement of the drop tube is released so that the drop tube slides downwards by a length corresponding to the length of the section of borehole drilled.
Apparatus for performing the method is also described.

REFERENCES:
patent: 1779575 (1930-10-01), Wilson
patent: 2838285 (1958-06-01), Gredell
patent: 2873950 (1959-02-01), Kandle
patent: 2912228 (1959-11-01), Kandle
patent: 2951131 (1960-09-01), Lyroudias
patent: 2990896 (1961-04-01), Kandle
patent: 3032128 (1962-05-01), Walton
patent: 3385383 (1968-05-01), Sturgeon
patent: 3467203 (1969-09-01), Johnson
patent: 3491842 (1970-01-01), Delacour et al.
patent: 3693734 (1972-09-01), Richmond
patent: 3734214 (1973-05-01), Benetti et al.

Affiliated with

Also associated with

Rating

Method and apparatus for sinking a cased borehole for producing 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 and apparatus for sinking a cased borehole for producing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for sinking a cased borehole for producing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-926008