Published May 21, 1976 | Version v1
Patent Open

Well logging method and apparatus

Creators

Description

A method and apparatus for logging a given earth formation is disclosed in which repetitive bursts of a continuous photon energy spectrum are emitted that penetrate the media surrounding a borehole traversing the earth formation. Indications of photons resulting from the interaction of the emitted photons and the surrounding media are obtained, each indication being obtained at a different separation from the source along the axis of the borehole. Finally, the indications are compared to determine characteristic representations of the media surrounding the borehole. At least one of the indications is the result of annihilation photons produced by the interaction of the emitted photons and the surrounding media

Availability note (English)

MF available from INIS under the Report Number.

Files

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Additional details

Additional titles

Original title (Dutch)
Werkwijze en inrichting voor het registreren van eigenschappen van media, die een boorgat omgeven
Augmented title (English)
Indications of photons resulting from the interaction of the emitted photons and the surrounding media are obtained

Publishing Information

Imprint Pagination
30 p.
IPC:
Int. Cl. E21b49/00; G01v5/00.
IPC
Int. Cl. E21b49/00; G01v5/00.
Patent number
NL patent document 7605437/A/

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
8301112
Subject category
S58: GEOSCIENCES; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
ANNIHILATION; BASIC INTERACTIONS; BOREHOLES; COMPARATIVE EVALUATIONS; ENERGY SPECTRA; PHOTON EMISSION; PHOTONS; PULSES; WELL LOGGING
Descriptors DEC
CAVITIES; ELEMENTARY PARTICLES; EMISSION; INTERACTIONS; MASSLESS PARTICLES; PARTICLE INTERACTIONS; SPECTRA

Optional Information

Notes
Priority 22 May 1975, 22 May 1975, USA; 7 figs.