Device for drilling through a formation

摘要

In order to reduce the risk of accidents in mechanically drilling through a stratum and to expand the range of applications of the device for drilling through a stratum, the invention provides that the control elements—which ensure the in-feeding of the cutting rod and the return of the device to the position for being transported by means of interacting the ball-and-socket joint with the control bushing and the body—are embodied as two-stage figure projections on the lateral truncations of the ball-and-socket joint, which cooperate with cutouts in the control bushing and the body; and the line of pipes and the hydraulic motor of the suspension and of the pivot point are optionally replaced by a cable and by an electric motor combined with a hydraulic pump.

主权项

1. A device for drilling through a stratum, comprising a body (5); a suspension (1) in the form of a line of pipes, a cutting rod (9) that is accommodated in a longitudinally oriented cutout (15) of the body (5) between a control bushing (7) and a bushing (11) and supported rotatably in a ball-and-socket joint (8); a pivot point (2) in the form of a hydraulic motor; an in-feed point of the cutting rod (9), which has the ball-and-socket joint (8) in the form of a ball truncated on a side (17), that is braced on the bushing (11) and cooperates via control elements (13) with the control bushing (7); an anchor cut (3) in the form of a hydraulic anchor; a rotation transmission point in the form of a link mechanism (6); a feedback point in the form of a constricting element (4) that is located in an annular gap between the control bushing (7) and the pivot point shaft; a pressure point (10) toward the borehole wall in the form of a spring plate (14); a rotary body, which is located in the body (5) and cutout (16) of the control bushing (7) opposite the longitudinally oriented cutout (15) of the body (5), wherein,
the control elements (13), which ensure an in-feeding of the cutting rod (9) and the return of the device to the position for being transported by means of interaction of the ball-and-socket joint (8) with the control bushing (7) and the body (5), are embodied as two-stage figure projections on lateral truncations of the ball-and-socket joint (8), which cooperate with the cutout in the control bushing (7) and the body (5).