US4955438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core drilling tool
Assignee: MICON Mining and Construction Products GmbH and Co KG
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Filing: 1989-04-21
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Granted: 1990-09-11
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Expires: 2009-04-21
Abstract
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.
Inventors
- 👤 Rainer Juergens
- 👤 Axel Sperber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:19
CPC Classifications
E; E21; E21B; E21B25/00; E21B25/16; E21B25/02; E21B47/00; E21B47/01; E21B47/013; E21B47/26
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
194 words
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.
Claim 2
Dependent Claim
194 words
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.
Claim 3
Dependent Claim
28 words
Tool according to claim 1, wherein said measurement unit has a measured value pickup for acquisition of such data as the borehole temperature, slope, azumuth and/or drilling progress.
Claim 4
Dependent Claim
28 words
Tool according to claim 1, wherein said measurement unit includes measured value pickup for acquisition of data on drilling pressure, torque and/or rotational speed of the outside housing.
Claim 5
Dependent Claim
28 words
Tool according to claim 1, characterized in that measurement unit includes measured value pickup for acquisition of information regarding the properties of the rocks of the soil formation.
Claim 6
Dependent Claim
25 words
Tool according to claim 1, wherein said measurement unit includes measured value pickup for acquisition of data on core gain, progress, jamming, orientation and/or properties.
Claim 7
Dependent Claim
31 words
Tool according to claim 1, wherein said measurement unit can be retracted mechanically together with the inside pipe or can be conveyed to the surface hydraulically by means of drilling mud.
Claim 8
Dependent Claim
18 words
Tool according to claim 1, characterized in that measurement unit comprises rechargeable electric batteries for it power supply.
Claim 9
Dependent Claim
26 words
Tool according to claim 1, wherein said measurement unit is provided with an electric generator that can be driven with drilling mud for its power supply.
Claim 10
Dependent Claim
32 words
Tool according to claim 1, wherein said measurement unit can gripped underground by means of a separate gripping tool, can be detached from core pipe part and conveyed to the surface separately.
Claim 11
Dependent Claim
181 words
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.
Claim 12
Dependent Claim
181 words
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.
Claim 13
Dependent Claim
178 words
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.
Claim 14
Dependent Claim
178 words
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.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |