Robert G Wilson
Accountancy at Xrd Blvd, Grand Junction, CO
License number
Colorado 1490
Issued Date
Nov 24, 1964
Renew Date
May 31, 2002
Expiration Date
May 31, 2002
Type
Certified Public Accountant
Address
Address
2775 Crossroads Blvd, Grand Junction, CO 81506
Professional information
Apparatus And Methods For Determining Gas Saturation And Porosity Of A Formation Penetrated By A Gas Filled Or Liquid Filled Borehole
US Patent:
6207953, Mar 27, 2001
Filed:
Apr 24, 1998
Appl. No.:
9/066729
Inventors:
Robert D. Wilson - Grand Junction CO
International Classification:
G01V5/10
US Classification:
2502694
Abstract:
Methods and apparatus are disclosed for determining gas saturation, liquid saturation, porosity and density of earth formations penetrated by a well borehole. Determinations are made from measures of fast neutron and inelastic scatter gamma radiation induced by a pulsed, fast neutron source. The system preferably uses two detectors axially spaced from the neutron source. One detector is preferably a scintillation detector responsive to gamma radiation, and a second detector is preferably an organic scintillator responsive to both neutron and gamma radiation. The system can be operated in cased boreholes which are filled with either gas or liquid. Techniques for correcting all measurements for borehole conditions are disclosed.
Formation Density Measurement Utilizing Pulse Neutrons
US Patent:
5900627, May 4, 1999
Filed:
Jun 19, 1997
Appl. No.:
8/878545
Inventors:
Richard C. Odom - Benbrook TX
Richard W. Streeter - Maracaibo, VE
Robert D. Wilson - Grand Junction CO
Richard W. Streeter - Maracaibo, VE
Robert D. Wilson - Grand Junction CO
Assignee:
Computalog Research, Inc. - Fort Worth TX
International Classification:
G01V 512
US Classification:
2502697
Abstract:
A device for measuring the density of a formation uses a high-energy pulsed neutron source which induces gamma rays in the formation, and determines a gamma diffusion length of the formation based on the attenuation of gamma rays produced by inelastic scattering of fast neutrons. The borehole tool houses the neutron source along with a near gamma ray detector and a far gamma ray detector. The gamma ray detectors are located at different distances from the fast neutron source and spaced sufficiently from the fast neutron source such that dependence of inelastic gamma counts on fast neutron transport and gamma production of the formation is substantially reduced. Gamma ray events can be sorted and counted in time- and energy-dependent bins. The present invention has several advantages over gamma-gamma logging, including deeper penetration of gamma, and is also superior over systems which measure, e. g. , hydrogen-based porosity.