System and method for correction of downhole measurements

• US 10,386,536 B2
• Filed: 01/24/2017
• Issued: 08/20/2019
• Est. Priority Date: 09/23/2011
• Status: Active Grant

• Current Assignee: Baker Hughes Incorporated (Baker Hughes Company)
• Original Assignee: Baker Hughes, a GE Company, LLC (Baker Hughes Company)
• Inventors: Hartmann, Andreas, Reckmann, Hanno, Maurer, Hans-Martin, Fulda, Christian, Fischer, Dorothea Marion
• Primary Examiner(s): Desta, Elias
• Application Number:
  US15/414,149
• Publication Number:
  US 20170131433A1
• Time in Patent Office: 938 Days
• CPC Class Codes: E21B 47/00 Survey of boreholes or wells monitoring pressure or flow of drilling fluid E21B21/08
• CPC Class Codes: E21B 7/06 Deflecting the direction of boreholes
• CPC Class Codes: G01B 21/24 for testing alignment of axes
• CPC Class Codes: G01B 21/32 for measuring the deformation in a solid
• CPC Class Codes: G01V 11/005 Devices for positioning logging sondes with respect to the borehole wall centralising devices for drilling rods or pipes E21B17/10; setting or locking tools in boreholes E21B23/00; locating objects in boreholes E21B47/09
• CPC Class Codes: G01V 13/00 Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
• CPC Class Codes: G01V 3/18 specially adapted for well-logging

Abstract

An embodiment of a system for estimating a parameter of an earth formation includes at least one formation parameter sensor disposed at a first downhole component and configured to measure a parameter of an earth formation to generate formation parameter data, and one or more processors in operable communication with the at least one formation parameter sensor. The one or more processors are configured to perform: generating a mechanics model of at least one of the first downhole component and a second downhole component, the mechanics model based on geometrical data representing at least one of the first downhole component and the second downhole component; estimating a misalignment of the at least one formation parameter sensor by using the mechanics model; and correcting the formation parameter data based on the misalignment.

Claims

1. A system for estimating a parameter of an earth formation, the system comprising:

at least one formation parameter sensor disposed at a first downhole component and configured to measure a parameter of an earth formation to generate formation parameter data; and

one or more processors in operable communication with the at least one formation parameter sensor, the one or more processors configured to perform;

generating a mechanics model of at least one of the first downhole component and a second downhole component, the mechanics model based on geometrical data representing at least one of the first downhole component and the second downhole component;

estimating a misalignment of the at least one formation parameter sensor by using the mechanics model; and

correcting the formation parameter data based on the misalignment.

2. The system of claim 1, further comprising at least one measurement device configured to generate deformation data of at least one of the first downhole component, the second downhole component, and a third downhole component.

3. The system of claim 2, wherein the mechanics model is based on the geometrical data and the deformation data.

4. The system of claim 1, wherein estimating the misalignment is performed in real time during a downhole operation.

5. The system of claim 1, wherein the mechanics model is based on one or more of:

a material property, a downhole fluid parameter and directional survey data.

6. The system of claim 1, wherein the at least one formation parameter sensor includes a transmitter and a receiver, and estimating the misalignment includes estimating an orientation of the receiver relative to an orientation of the transmitter.

7. The system of claim 6, wherein a configuration of the receiver and the transmitter is one of a cross component configuration and a tilted configuration.

8. The system of claim 1, wherein the formation parameter comprises at least one of a resistivity, a conductivity, a dielectric constant, an acoustic velocity, water saturation, porosity, density, permeability, anisotropy, distance to bed, and distance to anomaly.

9. The system of claim 1, wherein the downhole component is part of a drilling system, and the mechanics model is based on the geometrical data and a drilling dynamics parameter.

10. The system of claim 9, wherein the drilling dynamics parameter is selected from at least one of weight-on-bit, torque-on-bit, rate-of penetration, rotational rate, a steering force, bending of a downhole component, bending orientation of a downhole component, and an orientation of the downhole component.

11. A method of estimating a parameter of an earth formation, the method comprising:

measuring, by at least one formation parameter sensor disposed at a first downhole component, a parameter of an earth formation and generating formation parameter data;

generating, by one or more processors in operable communication with the at least one formation parameter sensor, a mechanics model of at least one of the first downhole component and a second downhole component, the mechanics model based on geometrical data representing at least one of the first downhole component and the second downhole component;

estimating a misalignment of the at least one formation parameter sensor by using the mechanics model; and

correcting the formation parameter data based on the misalignment.

12. The method of claim 11, further comprising generating deformation data of at least one of the first downhole component, the second downhole component, and a third downhole component.

13. The method of claim 12, wherein the mechanics model is based on the geometrical data and the deformation data.

14. The method of claim 11, wherein estimating the misalignment is performed in real time during a downhole operation.

15. The method of claim 11, wherein the mechanics model is based on one or more of:

a material property, a downhole fluid parameter and directional survey data.

16. The method of claim 11, wherein the at least one formation parameter sensor includes a transmitter and a receiver, and estimating the misalignment includes estimating an orientation of the receiver relative to an orientation of the transmitter.

17. The method of claim 16, wherein the configuration of the receiver and the transmitter is one of a cross component configuration and a tilted configuration.

18. The system of claim 11, wherein the formation parameter comprises at least one of a resistivity, a conductivity, a dielectric constant, an acoustic velocity, water saturation, porosity, density, permeability, anisotropy, distance to bed, and distance to anomaly.

19. The method of claim 11, wherein the downhole component is part of a drilling system, and the mechanics model is based on the geometrical data and a drilling dynamics parameter.

20. The method of claim 19, wherein the drilling dynamics parameter is selected from at least one of weight-on-bit, torque-on-bit, rate-of penetration, rotational rate, a steering force, bending of a downhole component, bending orientation of a downhole component, and an orientation of the downhole component.