Measuring apparatus
Patent
·
OSTI ID:4174021
An illustrative embodiment of the invention discloses a borehole effects compensation technique for a neutron logging tool. A third neutron detector (or its physical equivalent) is joined to a two-neutron detector formation porosity logging tool. The third detector equivalent is positioned within the tool a distance relative to the neutron source and the other detectors that enables changes in the signal from the third detector caused by variations in the borehole environment to be generally distinguishable from changes in the signal from at least one of the other detectors. The signals from the third detector and one of the two other detectors are combined in order to compensate for the influence of the borehole environment. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-33-000788
- Assignee:
- to Schlumberger Ltd.
- Patent Number(s):
- US 3887805
- OSTI ID:
- 4174021
- Country of Publication:
- United States
- Language:
- English
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