Radiant energy – Geological testing or irradiation – Well testing apparatus and methods
Reexamination Certificate
2007-01-09
2008-10-21
Porta, David P. (Department: 2884)
Radiant energy
Geological testing or irradiation
Well testing apparatus and methods
C250S253000, C250S256000, C250S269300, C250S269400, C250S269500, C250S255000, C250S269800, C376S160000, C702S006000, C702S008000
Reexamination Certificate
active
07439494
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.
REFERENCES:
patent: 3842265 (1974-10-01), Pitts, Jr.
patent: 4292518 (1981-09-01), Johnstone
patent: 4315148 (1982-02-01), Randall
patent: 4327290 (1982-04-01), Plasek
patent: 4424444 (1984-01-01), Smith, Jr. et al.
patent: 4645926 (1987-02-01), Randall
patent: 4656354 (1987-04-01), Randall
patent: 4668863 (1987-05-01), Gray et al.
patent: 4712007 (1987-12-01), Ondrik
patent: 5374823 (1994-12-01), Odom
patent: 6665616 (2003-12-01), Mickael
patent: 6686738 (2004-02-01), Edwards
patent: 2003/0009288 (2003-01-01), Mickael
patent: 2003/0138067 (2003-07-01), Tiller et al.
patent: WO 02/084333 (2002-10-01), None
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 Isnstrument, SPE 56803, 1999 SPE Annual Technical Conference and Exhibition, Houston, Texas, Oct. 3-6, 1999, pp. 1-11, 19 Figs.
Gilchrist W. Allen
Walser Randolph J.
Baker Hughes Incorporated
Madan Mossman & Sriram P.C.
Malevic Djura
Porta David P.
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