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1. WO2020231383 - ENHANCED CENTRIFUGE FOR CORE SAMPLE ANALYSIS

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[ EN ]

What is claimed is:

1. A centrifuge, comprising:

a rotating arm; and

a holder coupled to a distal end of the rotating arm, the holder being configured to rotate independently of the rotating arm for analyzing fluid-rock interaction within the holder.

2. The centrifuge of claim 1, wherein an axis of rotation of the holder is perpendicular to the rotating arm and tangential to direction of rotation of the rotating arm.

3. The centrifuge of claim 2, wherein a distance from a center of rotation of the rotating arm to the distal end of the rotating arm is larger than a width of the holder such that a first radial distance from the center of rotation of the rotating arm to any point in the holder differs from a second radial distance from the center of rotation of the rotating arm to any other point in the holder by less than a threshold.

4. The centrifuge of claim 1, wherein an axis of rotation of the holder is parallel to an axis of rotation of the rotating arm and perpendicular to direction of rotation of the rotating arm.

5. The centrifuge of claim 4, wherein a distance from a center of rotation of the rotating arm to the distal end of the rotating arm differs from a length of the holder by less than a threshold.

6. The centrifuge of claim 1, further comprising:

a vial configured to collect remainders of fluid exiting the holder as the rotating arm and the holder rotate for analyzing the fluid-rock interaction.

7. The centrifuge of claim 1, wherein analyzing the fluid-rock interaction includes measuring relative permeability and capillary pressure of rock samples in the holder.

8. The centrifuge of claim 1, wherein the holder has a cylindrical shape.

9. The centrifuge of claim 1, wherein a rotational speed of the rotating arm and a rotational speed of the holder are the same.

10. The centrifuge of claim 1, wherein a rotational speed of the rotating arm and a rotational speed of the holder are different.

11. A centrifuge, comprising:

a rotating arm configured to rotate around a first axis of rotation;

a holder coupled to a distal end of the rotating arm, the holder being configured to rotate independently of the rotating arm around a second axis of rotation, wherein the holder is configured to hold core samples and allow fluid to interact with the core samples as the rotating arm and the holder rotate; and

a vial configured to collect measurable amount of the fluid, after interaction with the core samples for analyzing fluid-rock interaction of core samples within the holder.

12. The centrifuge of claim 11, wherein the first axis of rotation is perpendicular to the second axis of rotation and tangential to direction of rotation of the rotating arm.

13. The centrifuge of claim 12, wherein a distance from the first axis of rotation of the rotating arm to the distal end of the rotating arm is larger than a width of the holder such that a first radial distance from the center of rotation of the rotating arm to any point in the holder differs from a second radial distance from the center of rotation of the rotating arm to any other point in the holder by less than a threshold.

14. The centrifuge of claim 11, wherein the first axis of rotation is perpendicular to direction of rotation of the rotating arm.

15. The centrifuge of claim 14, wherein a distance from a center of rotation of the rotating arm to the distal end of the rotating arm differs from a length of the holder by less than a threshold.

16. The centrifuge of claim 11, wherein analyzing the fluid-rock interaction includes measuring relative permeability and capillary pressure of the core samples in the holder.

17. The centrifuge of claim 11, wherein the holder has a cylindrical shape.

18. The centrifuge of claim 11, wherein a rotational speed of the rotating arm and a rotational speed of the holder are the same.

19. The centrifuge of claim 11, wherein a rotational speed of the rotating arm and a rotational speed of the holder are different.

20. The centrifuge of claim 11, wherein a result of analyzing fluid-rock interaction of the core samples are used for one or more of reservoir simulation or perforating a wellbore.

21. A method comprising:

extracting core samples from a wellbore for determining viability of drilling a well for hydrocarbon extraction;

placing the core samples in a holder of a centrifuge, the holder being coupled to a distal end of a rotating arm and configured to rotate independently of the rotating arm;

rotating the rotating arm around a first axis of rotation,

simultaneously with rotating the rotating arm around the first axis, rotating the holder around a second axis of rotation that is different than the first axis of rotation;

injecting fluid into the holder to interact with the core samples; and

analyzing core fluid interaction of the core samples based on measuring amount of fluid collected in a vial of the centrifuge after passing through the core samples inside the holder.