The invention relates to a drilling tool for earth drilling with a drill rod element which can be connected to a rotary drive and can be driven in a rotating manner about a drilling axis, a frame-like housing and at least one removal tooth which is supported in a radially adjustable manner in the housing between a retracted position in the housing and an operating position, in which the at least one removal tooth projects radially from the housing. Furthermore, on the drill rod element in the housing a transmission mechanism is arranged, through which a stroke and/or rotational movement of the drill rod element can be translated into a radial movement for radial adjustment of the at least one removal tooth.

In the auger cleaning device (8) according to the invention, in the closed configuration the tool-holder support forms a pass-through opening (82) arranged for allowing the passage of a helical drilling tool (6), the cleaning tool (170) engaging with the screw of the drilling tool (6) and, actuated by the actuation system (12, 12,12, 4), is arranged for rotating around the drilling tool (6) following at least one of its threads (60) so as to remove the debris lying on the drilling tool (6). In the open configuration the cleaning tool (170) is disengaged from the drilling tool (6) and preferably farther from it, with respect to when it is in the closed configuration.

An in-situ detection robot and method for geological information without disturbance of in-situ stress, including a sleeve, a drilling unit set at the top of the sleeve, a dumping unit set inside the sleeve, and a support propulsion unit is set outside the sleeve, the top of the dumping unit extends into the drilling unit, a detection unit is set between the drilling unit and the support propulsion unit, and the robot tail is connected to a control unit; the dumping unit is used to discharge soil drilled from a hole of the drilling unit to the ground, the support propulsion unit is used to realize support, the detection unit is used to detect geological information of surrounding environment of the robot, the control unit is used to control the drilling unit, the support propulsion unit and the detection unit, and the control unit collects and processes the geological information.

Systems and methods are disclosed herein for improved debris collection within a wellbore. An example method can include inserting a tool into a wellbore. where the tool includes an input shaft. an auger shaft. and a collection chamber. The input shaft can be rotated in a first direction, causing rotation of the auger shaft. The rotation of the auger shaft conveys debris into the collection chamber. The input shaft can also be rotated in a second direction, which causes the auger shaft to retract within the collection chamber. The retraction of the auger shaft within the collection chamber prevents the debris from escaping the collection chamber. The tool can then be removed from the wellbore while preventing the collected debris from escaping the collection chamber.

Systems and methods are disclosed herein for improved debris collection within a wellbore. An example method can include inserting a tool into a wellbore, where the tool includes an input shaft, an auger shaft, and a collection chamber. The input shaft can be rotated in a first direction, causing rotation of the auger shaft. The rotation of the auger shaft conveys debris into the collection chamber. The input shaft can also be rotated in a second direction, which causes the auger shaft to retract within the collection chamber. The retraction of the auger shaft within the collection chamber prevents the debris from escaping the collection chamber. The tool can then be removed from the wellbore while preventing the collected debris from escaping the collection chamber.

Described herein are multi-tool boring systems and methods of operating such systems for tunnel boring and/or underground pipe installation. A multi-tool boring system is specially configured for fast installation and replacement of various tools, such as a pneumatic rammer and a hydraulic drive, enabling different operating modes of the system, e.g., pilot tube installation, auger boring, pipe ramming, pilot pullback boring, static pipe bursting, and non-contact boring. In some examples, a multi-tool boring system comprises a track assembly, a jacking frame slidably supported on the track assembly, and an impact plate assembly, which is attached to the jacking frame and comprises an impact plate and shock absorbers between the impact plate and the jacking frame. The impact plate comprises an impact plate opening configured to engage and support a pneumatic rammer. The rammer can be replaced with a hydraulic drive with a shaft protruding through the opening.

The present invention relates to a cuttings collector for obtaining drill cuttings from subterranean wellbores, at least comprising: a) a cuttings collector stem provided with a double helix cutter acting as a conveyor screw having two transport paths, b) an external wall surrounding one of the two transport paths and a lower wall closing said one transport path at the lower end thereof, c) the cuttings collector stem, at the upper end thereof, being provided with a top sleeve having an opening and closing arrangement so that cuttings that are collected can be guided into a desired transport path.

A steering head has a body and an auger extending through the body. An outer surface of the steering head may have a rear portion that does not extend beyond a maximum perimeter of the exterior of a forward portion. An outer surface of the steering head may have openings that receive respective steering flaps. The steering head may have cutting bits that pivot between extracted and retracted positions in response to the auger's rotation. The auger may have a helical blade that contacts an internal surface of the body. The steering head may have three light elements that emit light visible at the rear of the steering head.

An apparatus and method for removing paraffin from a casing in a borehole of an oil/gas well without using pressure from the well. The apparatus may include a shaft with a plurality of flights wound around the shaft in a spiral pattern. The apparatus may include a coupling on one end for attachment to a drilling string. The method may include lowering the apparatus into the casing down to a paraffin cake lodged in the borehole. The apparatus may be used dislodge paraffin using the flights to cut the paraffin, an end of the apparatus, impact the paraffin, or both. Then the dislodged paraffin may be collected on the flights and lifted out of the casing for disposal.