BOREHOLE TESTER APPARATUS AND METHODS FOR USING NUCLEAR ELECTROMAGNETIC RADIATION TO DETERMINE FLUID PROPERTIES
First Claim
1. A fluid density section comprising:
- (a) a source of nuclear electromagnetic radiation;
(b) a first irradiation section and an opposing second irradiation section with said source disposed there between; and
(c) shielding forming a plurality of collimation openings such that(i) a first portion of radiation from said source is transmitted axially through said first irradiation section to a first detector, and(ii) a second portion of said radiation from said source is transmitted axially through said second irradiation section to a second detector.
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Accused Products
Abstract
Apparatus and methods for determining one or more fluid parameters of interest by irradiating fluid with a source of nuclear electromagnetic radiation and subsequently measuring attenuation and absorption properties of the fluid from which parameters of interest are determined. Measurements are made with a formation tester tool comprising preferably two functionally configured flow lines. The source simultaneously irradiates fluid contained in opposing irradiation sections that can be integral sections of each of the two flow lines. A radiation detector is dedicated to each irradiation section and measures radiation attenuation and absorption properties fluid contained within each flow line section. Absolute and relative fluid parameters of interest are determined from the responses of the two radiation detectors.
51 Citations
16 Claims
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1. A fluid density section comprising:
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(a) a source of nuclear electromagnetic radiation; (b) a first irradiation section and an opposing second irradiation section with said source disposed there between; and (c) shielding forming a plurality of collimation openings such that (i) a first portion of radiation from said source is transmitted axially through said first irradiation section to a first detector, and (ii) a second portion of said radiation from said source is transmitted axially through said second irradiation section to a second detector.
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8. A fluid density section comprising:
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(a) a source of nuclear electromagnetic radiation; (b) a first irradiation section and an opposing second irradiation section with said source disposed there between; and (c) shielding forming a plurality of collimation openings such that (i) a first portion of radiation from said source is transmitted axially through said first irradiation section to a first detector, and (ii) a second portion of said radiation from said source is transmitted axially through said second irradiation section to a second detector;
wherein(d) said first irradiation section and said second irradiation section are operationally connected to a port or probe section of a formation tester tool via dual flow lines. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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9. A method for measuring a property of a fluid, the method comprising:
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(a) providing a source of nuclear electromagnetic radiation; (b) disposing said source between a first irradiation section and an opposing second irradiation section; and (c) providing shielding to form a plurality of collimation openings such that (i) a first portion of radiation from said source is transmitted axially through said first irradiation section to a first detector, and (ii) a second portion of said radiation from said source is transmitted axially through said second irradiation section to a second detector.
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16. A method for measuring a property of a fluid, the method comprising:
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(a) providing a source of nuclear electromagnetic radiation; (b) disposing said source between a first irradiation section and an opposing second irradiation section; and (c) providing shielding to form a plurality of collimation openings such that (i) a first portion of radiation from said source is transmitted axially through said first irradiation section to a first detector, and (ii) a second portion of said radiation from said source is transmitted axially through said second irradiation section to a second detector; and (d) operationally connecting said first irradiation section and said second irradiation section to a port or probe section of a formation tester tool via dual flow lines. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification