Dual spaced, borehole compensated neutron well logging instrument
US3942004A · kind A · utility
10Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | May 16, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/108
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dual spaced neutron well logging instrument and method utilizing a pair of alternately operated neutron sources and a pair of detectors, said dual spaced neutron well logging instrument being able to measure the porosity of earth formations penetrated by a borehole substantially independent of the thickness and the chemical composition of the mudcake, the cement liner, the well casing, the drilling mud and the diameter of the borehole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.