Systems and methods for determining specific gravity and minerological properties of a particle

Patent metadata

Field	Value
Publication number	US-10126220-B2
Application number	US-201414333604-A
Country	US
Kind code	B2
Filing date	Jul 17, 2014
Priority date	Jul 22, 2013
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A system includes a particulate material sample that contains a fluid medium and a plurality of particles dispersed in the fluid medium. The system further includes a particle analysis apparatus having a sample cell and sample delivery means for delivering the particulate material sample to the sample cell, wherein the particle analysis apparatus is adapted to obtain particle information on at least one particle in that particulate material sample while the at least one particle is in the sample cell. Furthermore, the system also includes fluid manipulation means for manipulating movement of the fluid medium while the particle analysis apparatus is obtaining the particle information on the at least one particle, and a data processing apparatus that is adapted to determine a specific gravity of the at least one particle based on the obtained particle information.

First claim

What is claimed:

1. A system, comprising:
a particulate material sample comprising a fluid medium and a plurality of particles dispersed in said fluid medium;
a particle analysis apparatus comprising a sample cell and sample delivery means for delivering said particulate material sample to said sample cell, wherein said particle analysis apparatus is adapted to obtain particle information on at least one particle in said particulate material sample while said at least one particle is in said sample cell;
fluid manipulation means for manipulating movement of said fluid medium while said particle analysis apparatus is obtaining said particle information on said at least one particle; and
a data processing apparatus that is adapted to analyze a relationship between a velocity of said manipulated fluid medium and a velocity of said at least one particle and to determine a specific gravity of said at least one particle based on said obtained particle information.

2. The system of claim 1 , wherein said fluid medium comprises an incompressible fluid.

3. The system of claim 1 , wherein said particle information comprises at least one of a size and a velocity of said at least one particle.

4. The system of claim 1 , wherein said particle information comprises a velocity of said fluid medium.

5. The system of claim 1 , wherein said fluid manipulation means is adapted to change a velocity of said fluid medium.

6. The system of claim 1 , wherein said fluid manipulation means is adapted to oscillate said fluid medium.

7. The system of claim 1 , wherein said data processing apparatus is further adapted to determine said specific gravity of said at least one particle by analyzing momentum of and drag forces acting on said at least one particle.

8. The system of claim 1 , wherein said particle analysis apparatus is one of a laser diffraction apparatus and a digital optical imaging apparatus.

9. The system of claim 1 , wherein said sample delivery means is adapted to flow at least a portion of said particulate material sample to said sample cell prior to actuating said fluid manipulation means to manipulate movement of said fluid medium.

10. The system of claim 1 , wherein said fluid manipulation means comprises a movable piston device that is operatively coupled to said sample cell.

11. The system of claim 1 , wherein said fluid manipulation means comprises a flow control system that is operatively coupled to said sample delivery means.

12. A method, comprising:
delivering a particulate material sample to a sample cell of a particle analysis apparatus, said particulate material sample comprising a fluid medium and a plurality of particles dispersed in said fluid medium, at least some of said plurality of particles having different specific gravities;
obtaining particle information on said particulate material sample with said particle analysis apparatus while said plurality of particles are in said sample cell;
analyzing said particle information with a data processing apparatus;
determining a first specific gravity of a first particle of said plurality of particles from said analyzed particle information; and
determining a second specific gravity of a second particle of said plurality of particles from said analyzed particle information, wherein said second specific gravity is different from said first specific gravity.

13. The method of claim 12 , further comprising determining a specific gravity of each of said plurality of particles from said analyzed particle information.

14. The method of claim 12 , further comprising manipulating a movement of at least said first and second particles while obtaining said particle information.

15. The method of claim 14 , wherein manipulating said movement of at least said first and second particles comprises changing a velocity of at least said first and second particles.

16. The method of claim 14 , wherein manipulating said movement of at least said first and second particles comprises oscillating said fluid medium at a first frequency.

17. The method of claim 16 , wherein oscillating said fluid medium at said first frequency comprises oscillating said first particle at a second frequency and oscillating said second particle at a third frequency, said second and third frequencies being different than said first frequency.

18. The method of claim 12 , wherein determining said first and second specific gravities comprises determining a first velocity of said first particle, a second velocity of said second particle, and a fluid velocity of said fluid medium from said analyzed particle information.

19. The method of claim 12 , wherein said first and second specific gravities of said respective first and second particles are determined by analyzing momentum of and drag forces acting on said first and second particles.

20. The method of claim 12 , wherein obtaining said particle information on said particulate material sample comprises irradiating said plurality of particles with a laser beam, diffracting or scattering light from said laser beam with said plurality of particles, and detecting said diffracted light or said scattered light with said particle analysis apparatus.

21. The method of claim 12 , wherein obtaining said particle information on said particulate material sample comprises obtaining digital optical image data with said particle analysis apparatus.

22. The method of claim 21 , wherein obtaining said digital optical image data comprises obtaining data on mineralogical properties of said particulate material sample.

23. The method of claim 22 , wherein said data obtained on said mineralogical properties of said particulate matter comprises data on at least one of an RGB color spectra, refractive index, and birefringence of at least said first and second particles.

24. The method of claim 23 , wherein determining said first and second specific gravities comprises performing a comparative analysis of at least one of said RGB color spectra, refractive index, and birefringence of said first and second particles relative to at least one of a corresponding RGB color spectra, refractive index, and birefringence of known material samples having known specific gravity values.

25. A system, comprising:
a particulate material sample comprising a fluid medium and a plurality of particles dispersed in said fluid medium;
a particle analysis apparatus comprising a sample cell and sample delivery means for delivering said particulate material sample to said sample cell, wherein said particle analysis apparatus is adapted to obtain particle information on at least one particle in said particulate material sample while said at least one particle is in said sample cell;
fluid manipulation means for manipulating movement of said fluid medium while said particle analysis apparatus is obtaining said particle information on said at least one particle; and
a data processing apparatus that is adapted to determine a specific gravity of said at least one particle based on said obtained particle information by analyzing momentum of and drag forces acting on said at least one particle.

Assignees

• Nat Oilwell Varco Lp
• Nat Oilwell Varco Lp

Inventors

• Larson Thomas Robert

Classifications

• G01N2015/1075

  Physics · mapped topic

• G01N9/00 Primary

  Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity · CPC title

• G01N15/0211

  Investigating a scatter or diffraction pattern · CPC title

• G01N15/10

  Investigating individual particles · CPC title

• G01N9/10 Primary

  by observing bodies wholly or partially immersed in fluid materials · CPC title