Method and apparatus for determining the thermal neutron...

Details Method and apparatus for determining the thermal neutron... Method and apparatus for determining the thermal neutron...

2007-01-23

2007-01-23

Porta, David (Department: 2884)

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

C250S269600

Reexamination Certificate

active

10730552

ABSTRACT:
Data acquired using a pulsed nuclear source are susceptible to two sources of error. One error is due to large statistical noise towards the end of an acquisition window. Another source of error is the contamination of the early portion of the data by borehole and other effects. The beginning of the processing window is adjusted based on the signal level at the end of the processing window for the preceding pulsing of the source. The end of the processing window is derived from statistical considerations.

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Russel R. Randall et al.;Time Derived Sigma for Pulsed Neutron Capture Logging, SPE 9614, Middle East Oil Technical Conference of the Society of Petroleum Engineers, Manama, Bahrain, Mar. 9-12, 1981, pp. 345-347, 4 Figs.
W.A. Gilchrist, Jr.;Introduction of a New Through-Tubing Multifunction Pulsed Neutron Instrument, SPE 56803, 1999 SPE Annual Technical Conference and Exhibition, Houston, Texas Oct. 3-6, 1999, pp. 1-11, 19 Figs.

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