Core drilling tool
AssigneeEastman Christensen Company
InventorsRainer Juergens, Axel Sperber
Life of this patent
Estimating the term…
Abstract
A core drilling tool for drilling rock in underground soil formations which includes an outside pipe and an inside pipe therein that can be conveyed separately to the surface. The inside pipe includes a core-receiving receptacle at its lower end, and at its upper end is provided with a measurement unit for on-site acquisition, processing and storage of data, such as borehole, core and/or drilling process parameters.
Claims11
Core drilling tool for drilling rock in underground soil formations with an outside pipe that can be connected by means of connecting devices at its upper end to the lower end of a drill column that can be rotated by means of a drive and can be connected at its lower end to a core drilling crown, and with an inside pipe that forms a separate component that can be conveyed to the surface and a supporting part which is supported in the outside pipe and is co-rotational with the latter as well as a core pipe part suspended on the carrying part by means of a bearing so it will not twist relative to the outside pipe and can receive a core cut by the drilling process, wherein the core pipe part comprises a measurement unit located in its upper area for onsite acquisition, processing and storage of data that form parameters for the borehole, the drilling core and/or drilling process, and a traction device which can be connected to the inside pipe by means of a gripping device, said traction device comprising a line for transmission of measurement data to the surface.
Core drilling tool for drilling rock in underground soil formations with an outside pipe that can be connected by means of connecting devices at its upper end to the lower end of a drill column that can be rotated by means of a drive and can be connected at its lower end to a core drilling crown, and with an inside pipe that forms a separate component that can be conveyed to the surface and a supporting part which is supported in the outside pipe and is co-rotational with the latter as well as a core pipe part suspended on the carrying part by means of a bearing so it will not twist relative to the outside pipe and can receive a core cut by the drilling process, wherein the core pipe part comprises a measurement unit located in its upper area for on-site acquisition, processing and storage of data that form parameters for the borehole, the drilling core and/or drilling process, wherein said measurement unit has at least one area shielded by a heat protection device to hold heat-sensitive components.
Core drilling tool for drilling rock in underground soil formations with an outside pipe that can be connected by means of connecting devices at its upper end to the lower end of a drill column that can be rotated by means of a drive and can be connected at its lower end to a core drilling crown, and with an inside pipe that forms a separate component that can be conveyed to the surface and a supporting part which is supported in the outside pipe and is co-rotational with the latter as well as a core pipe part suspended on the carrying part by means of a bearing so it will not twist relative to the outside pipe and can receive a core cut by the drilling process, wherein the core pipe part comprises a measurement unit located in its upper area for on-site acquisition, processing and storage of data that form parameters for the borehole, the drilling core and/or drilling process, wherein said heat-sensitive components of said measurement unit are provided with their own heat protection devices.
Dependencies are inferred from the claim text.