US3633030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor detector borehole logging technique
Assignee: Schlumberger Technology Corp
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Filing: 1969-05-12
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Granted: 1972-01-04
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Expires: 1989-05-12
Abstract
Abstract One embodiment of the invention provides an array of semiconductor radiation detectors for coincidence or anticoincidence counting in a borehole logging tool. A further refinement combines, in a logging tool, a semiconductor spectrometer with one or more scintillation detectors. The response of this latter arrangement corresponds to the fine spectral resolution that characterizes semiconductor detectors rather than the less sharply defined spectral resolution of scintillation devices.
Inventors
- 👤 Stephen Antkiw
- 👤 Jay Tittman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:39
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
100 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising a housing, a semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, another semiconductor detector within said housing to form electron-hole pairs in response to radiation that is substantially coincident in time with said other detector electron-hole pair forming radiation, and gating means coupled to said another semiconductor detector for controlling said circuit means signal in response to said substantially coincident radiation.
Claim 2
Dependent Claim
100 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising a housing, a semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, another semiconductor detector within said housing to form electron-hole pairs in response to radiation that is substantially coincident in time with said other detector electron-hole pair forming radiation, and gating means coupled to said another semiconductor detector for controlling said circuit means signal in response to said substantially coincident radiation.
Claim 3
Dependent Claim
127 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising a housing, a semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, another semiconductor detector within said housing to form electron-hole pairs in response to radiation that is substantially coincident in time with said other detector electron-hole pair forming radiation, temperature control means for removing heat from said semiconductor detectors to enable said detectors to form electron-hole pairs substantially in response only to the earth formation radiation, and gating means coupled to said another semiconductor detector for controlling said circuit means signal in response to said substantially coincident radiation.
Claim 4
Dependent Claim
127 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising a housing, a semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, another semiconductor detector within said housing to form electron-hole pairs in response to radiation that is substantially coincident in time with said other detector electron-hole pair forming radiation, temperature control means for removing heat from said semiconductor detectors to enable said detectors to form electron-hole pairs substantially in response only to the earth formation radiation, and gating means coupled to said another semiconductor detector for controlling said circuit means signal in response to said substantially coincident radiation.
Claim 5
Dependent Claim
108 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising a housing for transport through the borehole, a plurality of semiconductor detector devices within said housing to form electron-hole pairs in response to the earth formation radiation, circuit means coupled to at least one of said plurality of semiconductor detectors for producing a signal that corresponds to said one detector electron-hole pairs, and gating means coupled to the balance of said semiconductor devices in said plurality to enable said circuit means to emit said signal in response to radiation that is substantially coincident with the electron-hole pairs forming radiation in said circuit-coupled semiconductor detector.
Claim 6
Dependent Claim
108 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising a housing for transport through the borehole, a plurality of semiconductor detector devices within said housing to form electron-hole pairs in response to the earth formation radiation, circuit means coupled to at least one of said plurality of semiconductor detectors for producing a signal that corresponds to said one detector electron-hole pairs, and gating means coupled to the balance of said semiconductor devices in said plurality to enable said circuit means to emit said signal in response to radiation that is substantially coincident with the electron-hole pairs forming radiation in said circuit-coupled semiconductor detector.
Claim 7
Dependent Claim
99 words
A tool for logging radiation emanating from an earth formation surrounding a borehole, comprising a plurality of semiconductor detectors within said housing to form electron-hole pairs in response to the earth formation radiation, circuit means coupled to at least one of said plurality of semiconductor detectors for producing a signal that corresponds to said one detector electron-hole pairs, and gating means coupled to thE balance of said semiconductor detectors in said plurality to inhibit said circuit means signal in response to radiation that is substantially coincident in time with the electron-hole pairs forming radiation in said circuit-coupled semiconductor detector.
Claim 8
Dependent Claim
99 words
A tool for logging radiation emanating from an earth formation surrounding a borehole, comprising a plurality of semiconductor detectors within said housing to form electron-hole pairs in response to the earth formation radiation, circuit means coupled to at least one of said plurality of semiconductor detectors for producing a signal that corresponds to said one detector electron-hole pairs, and gating means coupled to thE balance of said semiconductor detectors in said plurality to inhibit said circuit means signal in response to radiation that is substantially coincident in time with the electron-hole pairs forming radiation in said circuit-coupled semiconductor detector.
Claim 9
Dependent Claim
97 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, at least one scintillation detector within said housing for producing a signal that corresponds to the earth formation radiation, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means coupled to said scintillation detector for emitting said circuit means signal in response to radiation that is substantially coincident with the electron-hole pair forming radiation.
Claim 10
Dependent Claim
97 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, at least one scintillation detector within said housing for producing a signal that corresponds to the earth formation radiation, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means coupled to said scintillation detector for emitting said circuit means signal in response to radiation that is substantially coincident with the electron-hole pair forming radiation.
Claim 11
Dependent Claim
102 words
A tool for logging radiation emanating from an earth formation surrounding a borehole, at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, at least one scintillation detector within said housing for producing a signal that corresponds to the earth formation radiation, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means responsive to said scintillation detector signal to inhibit said circuit means signal in response to radiation that is substantially coincident with the electron-hole pair forming radiation in said circuit-coupled semiconductor detector.
Claim 12
Dependent Claim
102 words
A tool for logging radiation emanating from an earth formation surrounding a borehole, at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, at least one scintillation detector within said housing for producing a signal that corresponds to the earth formation radiation, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means responsive to said scintillation detector signal to inhibit said circuit means signal in response to radiation that is substantially coincident with the electron-hole pair forming radiation in said circuit-coupled semiconductor detector.
Claim 13
Dependent Claim
99 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, two scintillator crystals each adjacent a respective end of said semiconductor detector and in approximate alignment therewith, light-responsive means optically coupled to said crystals for producing a signal in response to radiation-induced illumination therein, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means responsive to said light-responsive means signal for controlling said circuit means signal.
Claim 14
Dependent Claim
99 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, two scintillator crystals each adjacent a respective end of said semiconductor detector and in approximate alignment therewith, light-responsive means optically coupled to said crystals for producing a signal in response to radiation-induced illumination therein, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means responsive to said light-responsive means signal for controlling said circuit means signal.
Claim 15
Dependent Claim
111 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, two scintillator crystals each adjacent a respective end of said semiconductor detector and in approximate alignment therewith, light-responsive means optically coupled to said crystals for producing a signal in response to radiation-induced illumination therein, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means activated by said light-responsive signal to emit said circuit means signal when said radiation-induced illumination is substantially coincident with the electron-hole pair forming radiation.
Claim 16
Dependent Claim
111 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, two scintillator crystals each adjacent a respective end of said semiconductor detector and in approximate alignment therewith, light-responsive means optically coupled to said crystals for producing a signal in response to radiation-induced illumination therein, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means activated by said light-responsive signal to emit said circuit means signal when said radiation-induced illumination is substantially coincident with the electron-hole pair forming radiation.
Claim 17
Dependent Claim
113 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, two scintillator crystals each adjacent a respective end of said semiconductor detector and in approximate alignment therewith, light-responsive means optically coupled to said crystals for producing a signal in response to radiation-induced illumination therein, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means activated by said light-responsive signal to inhibit said circuit means signal when said radiation-induced illumination is substantially coincident in time with the electron-hole pair Forming radiation.
Claim 18
Dependent Claim
113 words
A tool for logging radiation emanating from an earth formation surrounding a borehole comprising at least one semiconductor detector within said housing to form electron-hole pairs in response to the earth formation radiation, two scintillator crystals each adjacent a respective end of said semiconductor detector and in approximate alignment therewith, light-responsive means optically coupled to said crystals for producing a signal in response to radiation-induced illumination therein, circuit means coupled to said semiconductor detector for producing a signal that corresponds to said electron-hole pairs, and gating means activated by said light-responsive signal to inhibit said circuit means signal when said radiation-induced illumination is substantially coincident in time with the electron-hole pair Forming radiation.
References Cited (Backward Citations)
US2760078A
Cited
US3312823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |