Invention Grant
- Patent Title: Downhole neutron activation measurement
- Patent Title (中): 井下中子活化测量
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Application No.: US12996541Application Date: 2009-06-26
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Publication No.: US08969793B2Publication Date: 2015-03-03
- Inventor: Christian Stoller , Peter Wraight , Brad Roscoe
- Applicant: Christian Stoller , Peter Wraight , Brad Roscoe
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent Cathy Hewitt
- International Application: PCT/US2009/048810 WO 20090626
- International Announcement: WO2010/002727 WO 20100107
- Main IPC: G01V5/10
- IPC: G01V5/10

Abstract:
Systems and methods for measuring neutron-induced activation gamma-rays in a subterranean formation are provided. In one example, a downhole tool for measuring neutron-induced activation gamma-rays may include a neutron source and a gamma-ray detector. The neutron source may emit neutrons according to a pulsing scheme that includes a delay between two pulses. The delay may be sufficient to allow substantially all neutron capture events due to the emitted neutrons to cease. The gamma-ray detector may be configured to detect activation gamma-rays produced when elements activated by the emitted neutrons decay to a non-radioactive state.
Public/Granted literature
- US20110198488A1 DOWNHOLE NEUTRON ACTIVATION MEASUREMENT Public/Granted day:2011-08-18
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