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1. (WO2017171723) EXTENSOMÈTRE DE CIMENT DE FOND DE TROU
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

What is claimed is:

1. A system, comprising:

a casing disposed within a wellbore;

one or more data collection tools coupled to the casing; and

one or more sensors disposed within an annulus of the wellbore, each of the one or more sensors comprising:

a substrate;

a strain-sensitive element coupled to the substrate; and

a transceiver coupled to the substrate and configured to communicate with the one or more data collection tools.

2. The system of Claim 1, wherein the one or more sensors are disposed in cement in the annulus of the wellbore.

3. The system of Claim 1, further comprising an encapsulant enveloping the strain-sensitive element, the transceiver, and the substrate.

4. The system of Claim 3, wherein the encapsulant is a compliant material.

5. The system of Claim 1, wherein the strain-sensitive element is coupled to a radio frequency identifier (RFID) chip.

6. The system of Claim 1, wherein the strain-sensitive element is coupled to a capacitor and an inductor in a resonant circuit.

7. The system of any one of Claims 1-6, wherein the strain-sensitive element is mechanically separated from the substrate.

8. The system of any one of Claims 1-6, wherein the strain-sensitive element is a linear-resistive element whose resistance changes linearly with strain applied thereto.

9. The system of any one of Claims 1-6, wherein the strain-sensitive element is a component whose capacitance changes monotonically with strain applied thereto.

10. The system of any one of Claims 1-6, wherein the strain-sensitive element is a component whose inductance changes monotonically with strain applied thereto.

11. The system of any one of Claims 1-6, further comprising an interrogation tool disposed within the casing and proximate to the data collection tools.

12. The system of any one of Claims 1-6, wherein the one or more data collection tools are coupled to casing couplers that join two lengths of casing together.

13. A method, comprising:

positioning a casing within the wellbore, the casing having a data collection tool coupled thereto;

positioning a sensor in cement within the casing; and

injecting the cement into the casing such that the sensor becomes disposed in an annulus of the wellbore.

14. The method of Claim 13, further comprising collecting and storing sensor information from the sensor using the data collection tool.

15. The method of Claim 14, wherein collecting information from the sensor using the data collection tool comprises sending a first interrogating signal from the data collection tool to the sensor.

16. The method of Claim 14, further comprising collecting the sensor information from the data collection tool using an interrogator tool disposed within the wellbore.

17. The method of Claim 16, wherein collecting the sensor information from the data collection tool using the interrogator tool comprises sending a second interrogating signal from the interrogator tool to the data collection tool.

18. The method of Claim 17, wherein the second interrogating signal is a magnetic signal.

19. The method of Claim 17, wherein the second interrogating signal is an acoustic signal.

20. The method of any one of Claims 13-19, wherein positioning a sensor in cement within the casing comprises:

positioning a bottom plug within the casing, the bottom plug comprising a diaphragm; adding cement to the interior of the casing behind the bottom plug;

positioning the sensor in the cement;

positioning a top plug within the casing; and

injecting the cement into the interior of the casing comprises adding pressure to the top plug until the diaphragm is broken to allow the cement to flow within the annulus of the wellbore.