The present invention provides a method and system for providing on-site electrical power to a fracturing operation, and an electrically powered fracturing system. Natural gas can be used to drive a turbine generator in the production of electrical power. A scalable, electrically powered fracturing fleet is provided to pump fluids for the fracturing operation, obviating the need for a constant supply of diesel fuel to the site and reducing the site footprint and infrastructure required for the fracturing operation, when compared with conventional systems.

A sealed core storage and testing device for a downhole tool is disclosed. The device includes an outer body, an internal sleeve in the outer body, an end cap coupled to the outer body and operable to move from an open position to a closed position, and a plurality of ports located on at least one of the other body or the end cap.

A sealed core storage and testing device for a downhole tool is disclosed. The device includes an outer body, an internal sleeve in the outer body, an end cap coupled to the outer body and operable to move from an open position to a closed position, and a plurality of ports located on at least one of the other body or the end cap.

A central shaft defines a first interior flow path. The central shaft disposed at least partially within a washover pipe. A lead tapered mill is positioned at a downhole end of the central shaft to center the downhole-type milling tool within a tubular. The lead tapered mill defines a second central flow path in line with the first interior flow path. Milling blades extend between the central shaft and the washover pipe. The milling blades are arranged to allow fluid flow around the milling blades. Each of the milling blades includes a tungsten-carbide hardened face and a soft steel body configured to support a load of the downhole-type milling tool during milling operations. A junk basket is positioned within the washover pipe uphole of the milling blades to receive and retain cuttings formed by the milling blades.

This invention relates to a collecting device (1) for loosening and collecting particulate material from a well. The device includes a first end portion and a second end portion; a feed pipe (6) in the first end portion; a collecting container (8) including at least one container section (10), between the feed pipe (6) and the second end portion. A conveyor (18), in the feed pipe (6), moves the particulate material in toward the collecting device (1). The device further includes a tool (20) at the leading end portion of the conveyor (18) and a fluid outlet (38) at the second end portion; a mono pump (12) driven by a motor (22); and at least one container section (10) in a flow path (40) on the pressure side of the mono pump (12). A method for loosening and collecting particulate materials from a well by means of the collecting device (1) is described as well.

This invention relates to a collecting device (1) for loosening and collecting particulate material from a well. The device includes a first end portion and a second end portion; a feed pipe (6) in the first end portion; a collecting container (8) including at least one container section (10), between the feed pipe (6) and the second end portion. A conveyor (18), in the feed pipe (6), moves the particulate material in toward the collecting device (1). The device further includes a tool (20) at the leading end portion of the conveyor (18) and a fluid outlet (38) at the second end portion; a mono pump (12) driven by a motor (22); and at least one container section (10) in a flow path (40) on the pressure side of the mono pump (12). A method for loosening and collecting particulate materials from a well by means of the collecting device (1) is described as well.

Apparatus for controlling laser piercing of a remote material (10), which apparatus comprises: at least one piercing laser (1) for emitting laser radiation (2) for piercing the remote material (10), which laser radiation (2) is characterized by a first wavelength (16); a probe laser (3) for emitting a probe signal (4) for monitoring the piercing of the remote material (10); beam delivery optics (5) configured to direct the laser radiation (2) and the probe signal (4) onto the material (10); at least one detector (6) for detecting optical radiation (7) that is emitted or reflected by the material (10) in response to the probe signal (4); and an electronic filter (8) for filtering an electronic signal (9) emitted by the detector (6) in response to the detector (6) detecting the optical radiation (7); and the apparatus being characterized in that the probe laser (3) is configured such that the probe signal (4) is able to be modulated by a modulation signal (13); and the electronic filter (8) comprises a phase sensitive detector (14) which is configured to receive the electronic signal (9) and the modulation signal (13) and to provide phase sensitive detection of the electronic signal (9), which phase sensitive detection is used to improve a signal to noise ratio of an amplitude of the electronic signal (9), thereby enabling detection of a reduction in the amplitude of the electronic signal (9), which reduction is indicative of the laser radiation (2) piercing the remote material (10).

A downhole torch system and method of use includes a cylindrical housing, a protective material provided on at least one of the cylindrical housing and the fuel load, and a fuel load located within the cylindrical housing. The protective material is provided between the fuel load and the cylindrical housing to protect the cylindrical housing from adverse effects caused by the reaction of the burning fuel and/or the subsequent production of combustion products for cutting and/or perforating processes during operation of the torch system. The protective material significantly improves the cutting and/or perforating performance of the torch system.

A shaft enlargement arrangement for a boring system is provided, the shaft enlargement arrangement comprising a hollow column proximate a lower end of the boring system; a first cutter head that is rotatably fitted to the hollow column, with first drive means being provided to rotate the first cutter head relative to the hollow column so as to bore downwardly a hole having a diameter corresponding substantially to the diameter of the first cutter head; and a boring head arrangement fitted to an operatively lower end of the column, the boring head arrangement terminating in a second cutter head to bore a leading hole as the boring system proceeds to bore downwardly. In an embodiment, the first cutter head comprises a support body carrying a winged arrangement, the support body being rotatably fitted to the column, the winged arrangement comprising a plurality of wings extending from the support body, each wing being fitted with, or comprising, a plurality of first cutter elements.

A shaft enlargement arrangement for a boring system is provided, the shaft enlargement arrangement comprising a hollow column proximate a lower end of the boring system; a first cutter head that is rotatably fitted to the hollow column, with first drive means being provided to rotate the first cutter head relative to the hollow column so as to bore downwardly a hole having a diameter corresponding substantially to the diameter of the first cutter head; and a boring head arrangement fitted to an operatively lower end of the column, the boring head arrangement terminating in a second cutter head to bore a leading hole as the boring system proceeds to bore downwardly. In an embodiment, the first cutter head comprises a support body carrying a winged arrangement, the support body being rotatably fitted to the column, the winged arrangement comprising a plurality of wings extending from the support body, each wing being fitted with, or comprising, a plurality of first cutter elements.