Natural gamma ray logging sub

Details Natural gamma ray logging sub Natural gamma ray logging sub

1992-08-17

1994-02-08

Anderson, Bruce C.

Radiant energy

Radiation tracer methods

Radioactive tracer methods

250260, 378 60, G01N 2300

Patent

active

052850650

ABSTRACT:
A natural gamma tag marking materials for sub or permanent markers used in gamma logging operations, such natural gamma materials having a gamma count of between 200 and 1000 counts per second. The instant invention further discloses a typical Sub, for insertion in a drilling operation, utilizing natural gamma element compounds which are considered to be non-hazardous and effective as tag markers when used in wireline logging operations.

REFERENCES:
patent: 2320643 (1943-06-01), Neufeld
patent: 2549109 (1951-04-01), McPhee
patent: 3835317 (1974-09-01), Vann
patent: 3962412 (1976-06-01), Wolfangel
patent: 4436996 (1984-03-01), Arnold et al.

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