Abstract: The Invention relates to an underground drilling rig (10) and a method for its erection, wherein the method, in a special embodiment, comprises erecting a mast structure (20) of the drilling rig (10) extending from a horizontal tunnel (production tunnel) into a vertical mast shaft (14) and by means of an erecting structure (50), wherein the mast structure (20) comprises a plurality of mast segments (60) connected to one another or connectable to one another.

Abstract: The invention is a land drilling rig (10) having a drilling mast (12), a top drive (14) movable in the drilling mast (12) along the vertical axis of the drilling mast (12), and a crown bearing (18) at an upper end (16) of the drilling mast (12), the crown bearing (18) being movable by means of a positioning device (24), and a method of operating such a drilling rig (10) and a method of operating a top drive (14) in the drilling mast (12) of such a drilling rig (10).

Abstract: A water part module for attaching to a piston pump, which has a support unit that can be releasably attached to the piston pump and at least respectively one suction module and pressure module that is releasably connected to the support unit. The support unit and each suction module and each pressure module are designed such that the suction and pressure modules are interchangeable with one another. Each suction and pressure module have at least two planed side faces of which one acts as a lower connection face and a side face adjoining the lower connection face acts as a lateral connection face. A duct inside the respective suction and pressure module, which can be closed and opened by a valve in the respective suction and pressure module, ends on one side in the lower connection face and on the other side in the lateral connection face.

Abstract: The invention relates to a tong system for connecting a drill rod element (12) to an often stationary drill rod element (12) or for disconnecting a drill rod element from another drill rod element (12), wherein the tong system comprises at least two clamping blocks (20, 22), which face each other and are intended to fasten the tong system to the stationary drill rod element (12), and wherein at least one clamping block (20, 22) comprises movable means (30, 32) having a centering contour, which movable means (30, 32) are effective for adjusting the tong system in relation to the stationary drill rod element (12). The invention further relates to a clamping block (20, 22) as a component of such a tong system.

Abstract: The invention relates to a tong system for connecting a drill rod element (12) to an often stationary drill rod element (12) or for disconnecting a drill rod element from another drill rod element (12), wherein the tong system comprises at least two clamping blocks (20, 22), which face each other and are intended to fasten the tong system to the stationary drill rod element (12), and wherein at least one clamping block (20, 22) comprises movable means (30, 32) having a centering contour, which movable means (30, 32) are effective for adjusting the tong system in relation to the stationary drill rod element (12). The invention further relates to a clamping block (20, 22) as a component of such a tong system.

Abstract: The invention relates to a handling unit for drill rods having an elevator bracket (30) which can be swiveled by means of a tilt arm (34) under the influence of a tilt cylinder (32), and means (42) for detecting a position of the at least one elevator bracket (30), in which is provided at least one valve (50) as means for detecting the position of the or each elevator bracket (30) and as part of a hydraulic switching control circuit (54) which continues outside the handling unit, and at least one connecting member (52) for the at least one valve (50), which connecting member can be moved by a movement of the tilt arm (34), wherein the or each valve (50) opens or closes the hydraulic switching control circuit (54) such that the state of the switching control circuit (54) can be evaluated as position information.

Abstract: The invention relates to a handling device for drill pipes (18) and to a so-called top drive (16) comprising said handling device, a so-called pipe handler, and having means for detecting a position of an elevator bail (30) comprised by the handling device/pipe handler and for transmitting the associated position information, wherein the position information is transmitted from the pipe handler to, e.g., the top drive (16) and is converted into an electrical signal for detecting and avoiding potentially critical situations as a result of a position/deflection of the elevator bail (30).

Abstract: Clamping device for cylinder sleeves of a pump system, and a piston pump or plunger pump for conveying drilling fluid during drilling of boreholes, particularly in the field of oil and natural gas production, and its use. Pump system includes a pump unit and a driving rotary drive unit. Clamping device for cylinder sleeve of a piston pump or plunger pump includes a cylinder sleeve receptacle, a clamping element provided at the pump, and cylinder sleeve or a portion of the cylinder sleeve provided between the clamping element and the cylinder sleeve receptacle, Clamping element and cylinder sleeve receptacle are connected by a connecting apparatus.

Abstract: The invention relates to a handling device for drill pipes (18) and to a so-called top drive (16) comprising said handling device, a so-called pipe handler, and having means for detecting a position of an elevator bail (30) comprised by the handling device/pipe handler and for transmitting the associated position information, wherein the position information is transmitted from the pipe handler to, e.g., the top drive (16) and is converted into an electrical signal for detecting and avoiding potentially critical situations as a result of a position/deflection of the elevator bail (30).

Abstract: Clamping device for cylinder sleeves of a pump system, and a piston pump or plunger pump for conveying drilling fluid during drilling of boreholes, particularly in the field of oil and natural gas production, and its use. Pump system includes a pump unit and a driving rotary drive unit. Clamping device for cylinder sleeve of a piston pump or plunger pump includes a cylinder sleeve receptacle, a clamping element provided at the pump, and cylinder sleeve or a portion of the cylinder sleeve provided between the clamping element and the cylinder sleeve receptacle, Clamping element and cylinder sleeve receptacle are connected by a connecting apparatus.

Abstract: A drilling machine and drilling rig for exploratory drillings and producing wells, include a base mounting atop drive, and a multifunctional gripper for gripping drilling pipe from a stock and to be raised on the base for eventual positions positioning at a well center, an elevator being provided below the top drive. The base can be rotatably mounted and have a live ring at a base lower end region, the base being rotated to the pipe stock location and being rotatable to a well center as well. A drilling pipe upper end when raised on the base can be connected to the top drive, and an iron roughneck on a rig floor can be used to connect a pipe lower end to a pipe section in the well. Where two drilling machine are used, one can be used for actual drilling at the well center, and the second supplied with pipework for the operation.

Abstract: A drilling machine for a drilling rig and a drilling rig which can be used for exploratory drillings and producing wells, particularly in hydrocarbon deposits, both onshore and offshore. The drilling machine includes a base, on or in which a top drive is displaceable axially to the longitudinal axis of the base and a pipe-handling apparatus which is movable, especially by sliding, perpendicularly to the longitudinal axis of the base and which grips the drilling pipe. The base is pivotably and/or rotatably mounted in the region of the foot, and it is possible for a virtually continuous drilling process to be carried out using a combination of two drilling machines.

Abstract: The invention relates to a method and an apparatus for handling pipes, such as rods and drilling strings, in drilling rigs and drilling installations for sinking boreholes, in particular on hydrocarbon reservoirs. The apparatus according to the invention for handling pipes and drilling strings in a drilling installation having a steelwork structure with a set-down platform, a working platform, a lifting device, a drill drive and a pipe connecting device is defined in particular by the fact that there is arranged on the drilling installation a wireline, a two-axis crane which is connected to the wireline and to the steelwork structure and an extension element, which is arranged on the outside of the racking platform and has a passage to the racking platform, and also by the fact that a set-down and make-up device, arranged beside or on the working platform, is provided for vertical pipes, it being possible for the set-down and make-up device to be accessed by the wireline.