Production logging tool

Patent metadata

Field	Value
Publication number	US-11448059-B2
Application number	US-202016986678-A
Country	US
Kind code	B2
Filing date	Aug 6, 2020
Priority date	Aug 6, 2020
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

In an example implementation, a production logging tool includes a housing that includes a first testing section defining a first central opening having a first diameter and a second testing section defining a second central opening having a second diameter different from the first diameter, a first flow sensor positioned within the first central opening, a second flow sensor positioned within the second central opening, and a sealing device configured to seal an annulus of a wellbore. The second central opening is fluidly coupled to the first central opening.

First claim

What is claimed is:

1. A production logging tool comprising:
a housing configured to be disposed within a wellbore, the housing having an uphole end and a downhole end, the uphole end closer to the surface compared to the downhole end, the housing comprising:
a first testing section, wherein the first testing section defines a first central opening having a first diameter; and
a second testing section between the first testing section and the uphole end of the housing, wherein the second testing section defines a second central opening having a second diameter smaller than the first diameter, wherein the second central opening is fluidly coupled to the first central opening;
a third testing section between the second testing section and the uphole end of the housing, wherein the third testing section defines a third central opening with a third diameter smaller than the first diameter and the second diameter, wherein the third central opening is fluidly coupled to the second central opening;
a first flow sensor positioned within the first central opening;
a second flow sensor positioned within the second central opening;
a third flow sensor positioned within the third central opening; and
a sealing device configured to seal an annulus of the wellbore, the sealing device disposed closer to the downhole end than the uphole end.

2. The production logging tool of claim 1 , wherein the first diameter and the second diameter are smaller than a diameter of a portion of the wellbore proximate the production logging tool.

3. The production logging tool of claim 1 , wherein:
the third diameter is smaller than the first diameter and the second diameter; and
the first testing section, the second testing section, and the third testing section are connected in series and configured to allow formation fluid to flow through the first central opening, the second central opening, and the third central opening in series.

4. The production logging tool of claim 1 , wherein the sealing device comprises an annular sealing device coupled to the housing.

5. The production logging tool of claim 1 , further comprising a guider device coupled to the downhole end of the housing proximate the first testing section.

6. The production logging tool of claim 5 , where the guider device comprises:
an outer sealing edge attached to the downhole end of the housing, the outer sealing edge configured to seal the annulus of the wellbore; and
a funnel-shaped body, wherein a portion of the funnel-shaped body opposite the outer sealing edge is fluidly coupled to the first testing section.

7. The production logging tool of claim 6 , wherein the sealing device comprises the outer sealing edge of the guider device.

8. The production logging tool of claim 1 , wherein:
the first flow sensor comprises a first spinner flow sensor; and
the second flow sensor comprises a second spinner flow sensor.

9. The production logging tool of claim 1 , wherein the housing further comprises a coupling section configured to couple with other logging tools or directly to a downhole conveyance.

10. The production logging tool of claim 1 , wherein the first flow sensor and the second flow sensor generate data for determining an average holdup of formation fluid flowing through the production logging tool.

11. A production logging method comprising:
positioning a production logging tool in a wellbore;
sealing an annulus of the wellbore proximate the production logging tool using a sealing device;
measuring a first flow rate of formation fluid flowing in an uphole direction toward a surface of the wellbore through a first testing section of the production logging tool using a first sensor positioned in a first central opening defined by the first testing section;
measuring a second flow rate of formation fluid flowing through a second testing section of the production logging tool positioned downstream of the first testing section using a second sensor positioned in a second central opening defined by the second testing section, wherein the first central opening is fluidly coupled to the second central opening and a diameter of the second central opening is smaller than a diameter of the first central opening; and
measuring a third flow rate of formation fluid flowing through a third testing section of the production logging tool positioned downstream of the second testing section using a third sensor positioned in a third central opening defined by the third testing section, wherein the third central opening is fluidly coupled to the second central opening and a diameter of the third central opening is smaller than the diameter of the second central opening.

12. The method of claim 11 , wherein sealing the portion of the annulus of the wellbore proximate the production logging tool using a sealing device comprises activating a sealing device coupled to a housing of the production logging tool.

13. The method of claim 11 , wherein sealing the portion of the annulus of the wellbore proximate the production logging tool using a sealing device comprises activating an a guider device of the production logging tool, wherein the guider device is fluidly coupled to the first central opening of the first testing section and comprises an outer sealing edge.

14. The method of claim 11 , further comprising determining, based on the first flow rate measured by the first sensor and the second flow rate measured by the second sensor, a total flow rate of the formation fluid.

15. The method of claim 11 , further comprising applying an algorithm to the first flow rate measured by the first sensor and the second flow rate measured by the second sensor to maximize accuracy.

16. The method of claim 11 , further comprising determining, an average holdup of fluid flowing through the production logging tool.

17. A downhole tool comprising:
a downhole conveyance;
a housing configured to couple with the downhole conveyance, the housing configured to be disposed within a wellbore, the housing having an uphole end and a downhole end, the uphole end closer to the surface compared to the downhole end, the housing comprising:
a first testing section, wherein the first testing section defines a first central opening having a first diameter; and
a second testing section between the first testing section and the uphole end of the housing, wherein the second testing section defines a second central opening having a second diameter smaller than the first diameter, wherein the second central opening is fluidly coupled to the first central opening;
a third testing section between the second testing section and the uphole end of the housing, wherein the third testing section defines a third central opening with a third diameter smaller than the first diameter and the second diameter, wherein the third central opening is fluidly coupled to the second central opening;
a first flow sensor positioned within the first central opening;
a second flow sensor positioned within the second central opening;
a third flow sensor positioned within the third central opening; and
a sealing device configured to seal an annulus of the wellbore, the sealing device disposed closer to the downhole end than the uphole end.

Assignees

• Saudi Arabian Oil Co

Inventors

• Rueda Jose I
• Sadykov Almaz
• Mechkak Karim

Classifications

• E21B33/10

  in the borehole {(sealing the junction between main bore and laterals E21B41/0042)} · CPC title

• E21B47/10 Primary

  Locating fluid leaks, intrusions or movements · CPC title

• G01F1/10

  using rotating vanes with axial admission · CPC title

• E21B49/08

  Obtaining fluid samples or testing fluids, in boreholes or wells · CPC title