Multidetector pulsed-neutron through-tubing cased-hole density m

Details Multidetector pulsed-neutron through-tubing cased-hole density m Multidetector pulsed-neutron through-tubing cased-hole density m

1997-03-13

1998-10-20

Glick, Edward J.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

2502697, G01V 510

Patent

active

058250247

ABSTRACT:
An apparatus for measuring the density of a subterranean formation from within a wellbore, especially a cased wellbore. The apparatus has an energy source configured to generate 14 MeV of neutrons in pulses of 20 microseconds or less. The apparatus has at least three detectors for detecting gamma rays which are produced as a result of the neutron pulse. The detectors and energy source are aligned along a central axis with the energy source being at one end. Shielding is disposed between each of the three detectors and between the end detector and the energy source adjacent to it. The detectors are configured to measure gamma rays below 700 KeV and generate a signal in response thereto. The signals may then be compared to predetermined characteristic signals or computer simulations to determine the density, and hence porosity, of the formation.

REFERENCES:
patent: 3156822 (1964-11-01), Tittman
patent: 4297573 (1981-10-01), Smith, Jr. et al.
patent: 4574193 (1986-03-01), Arnold et al.
patent: 5434408 (1995-07-01), Smith, Jr. et al.
patent: 5627368 (1997-05-01), Moake
Topical Report--Design of a Case-Hole-Density Logging Tool Phase I, Prepared by Halliburton Energy Services, Houston, TX; Gas research Institute, Exploration and Production Group, Aug. 1995 (GRI-95/0246), pp. 1-30.
Evaluation of Highly Deviated Wells with Gamma Ray/Electric Logs and Cased Hole Density/Neutron Logs, R. A. Haley, Shell Oil Co., and D. L. Kirchoff, Schlumberger Offshore Services, Members SPE-AIME; 1975; Paper No. SPE 5512 .

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