Process and device for sinking wells
OwnerClaude Souriceinventor
Life of this patent
Estimating the term…
Abstract
A device and process for sinking vertical wells. A pair of rotary digging heads have horizontal axes mounted on supports for movement of such axes towards and away from each other between a central position close to the axis of a well and a peripheral position adjoining the wall of the well being formed. The different heads are spaced apart so that the horizontal components of the reactions resulting from them cancel each other out. A process for using the device to form a well wherein the heads are initially close together and progressively move apart as the well is formed.
Claims15
A device for sinking vertical wells, comprising, on an assembly, at least one pair of rotary digging heads whose axes of rotation are substantially horizontal, said heads being mounted on respective supports mounted on said assembly for movement, each time in a vertical plane and symmetrically, between a central position close to the axis of the well and a peripheral position adjoining the wall of the well being formed, and means for raising and lowering the digging heads, the different heads being spaced apart so that the horizontal components of the reactions produced by their work cancel each other out reciprocally.
A process for sinking wells including providing a device having at least one pair of rotary digging heads whose axes of rotation are substantially horizontal and which are mounted on respective supports on an assembly for movement symmetrically in a vertical plane between a central position close to the axis of the well and a peripheral position adjoining the walls of the well, including providing means for raising and lowering the digging heads, wherein the digging heads are spaced apart so that the horizontal components of the reactions produced by their work cancel each other out reciprocally, and forming at least one trench starting from the position in which the heads are close together and progressively moving the heads apart symmetrically with respect to each other, the well being formed by digging out successive trenches.
A process for sinking wells, including providing a device having at least one pair of rotary digging heads whose axes of rotation are substantially horizontal and which are mounted on respective supports on an assembly for movement symmetrically in a vertical plane between a central position adjoining the walls of the well, and including providing means for raising and lowering the digging heads, wherein the digging heads are spaced apart so that the horizontal components of the reactions produced by their work cancel each other out reciprocally, wherein the assembly rotates about an axis of the well so that the digging heads may be moved in a radial plane between a central position close to the axis of the well and a peripheral position adjoining the walls of the well, and wherein the device has a means for raising and lowering the digging heads and a means for causing the assembly to rotate to change its radial plane of movement, using at least two digging heads disposed about the axis of the well so that the horizontal components of the reactions produced by their work cancel each other out reciprocally, excavating trenches in the bottom of the well by simultaneous movement of the heads in their radial planes between a first central position and a second peripheral position, and then raising and bringing the heads by rotation about the axis of the well into second radial planes for excavating new trenches and so on.
Dependencies are inferred from the claim text.