초록 ▼

A method of drilling a wellbore can include drilling the wellbore with a continuous tubing drill string, and sensing at least one parameter with an optical waveguide in the drill string. A well system can include a continuous tubing drill string, and an optical waveguide in the drill string. The opt

A method of drilling a wellbore can include drilling the wellbore with a continuous tubing drill string, and sensing at least one parameter with an optical waveguide in the drill string. A well system can include a continuous tubing drill string, and an optical waveguide in the drill string. The optical waveguide may sense at least one parameter distributed along the drill string.

대표청구항 ▼

1. A method of drilling a wellbore, the method comprising: drilling the wellbore with a continuous tubing drill string; andsensing at least one parameter with an optical waveguide in the drill string, the sensing comprising detecting optical back scatter along the optical waveguide. 2. The method of

1. A method of drilling a wellbore, the method comprising: drilling the wellbore with a continuous tubing drill string; andsensing at least one parameter with an optical waveguide in the drill string, the sensing comprising detecting optical back scatter along the optical waveguide. 2. The method of claim 1, wherein the drill string is continuous at least from a surface location to a bottom hole assembly of the drill string. 3. The method of claim 1, wherein sensing at least one parameter comprises sensing the parameter as distributed along the drill string. 4. The method of claim 1, wherein sensing at least one parameter comprises distributed acoustic sensing. 5. The method of claim 1, wherein sensing at least one parameter comprises distributed temperature sensing. 6. The method of claim 1, wherein sensing at least one parameter comprises distributed vibration sensing. 7. The method of claim 1, wherein sensing at least one parameter comprises distributed strain sensing. 8. The method of claim 1, wherein the at least one parameter is selected from the group comprising pressure, temperature, chemical ion, ionizing radiation, pH, magnetic field and gamma radiation. 9. The method of claim 1, further comprising adjusting a choke, thereby inducing an influx of fluid into the wellbore, and wherein sensing at least one parameter further comprises detecting the influx. 10. The method of claim 9, further comprising measuring pressure in the wellbore when detecting the influx, wherein the pressure in the wellbore is correlated to pore pressure in a formation intersected by the wellbore. 11. The method of claim 9, further comprising adjusting the choke in response to detecting the influx. 12. The method of claim 1, further comprising adjusting a choke, thereby inducing a loss of fluid from the wellbore, and wherein sensing at least one parameter further comprises detecting the loss of fluid. 13. The method of claim 12, further comprising measuring pressure in the wellbore when detecting the loss of fluid, wherein the pressure in the wellbore is correlated to fracture pressure in a formation intersected by the wellbore. 14. The method of claim 12, further comprising adjusting the choke in response to detecting the loss of fluid. 15. The method of claim 1, wherein the optical waveguide is positioned in an interior flow passage of the drill string. 16. A well system, comprising: a continuous tubing drill string; andan optical waveguide in the drill string,wherein the optical waveguide senses at least one parameter along the drill string, via detection of optical back scatter along the optical waveguide. 17. The system of claim 16, wherein the drill string is continuous at least from a surface location to a bottom hole assembly of the drill string. 18. The system of claim 16, wherein the optical waveguide senses the at least one parameter as distributed along the drill string. 19. The system of claim 16, wherein the at least one parameter comprises distributed acoustic waves. 20. The system of claim 16, wherein the at least one parameter comprises distributed temperature. 21. The system of claim 16, wherein the at least one parameter comprises distributed vibration. 22. The system of claim 16, wherein the at least one parameter comprises distributed strain. 23. The system of claim 16, wherein the at least one parameter is selected from the group comprising pressure, temperature, chemical ion, ionizing radiation, pH, magnetic field and gamma radiation. 24. The system of claim 16, further comprising a choke, adjustment of which induces an influx of fluid into the wellbore, and wherein the at least one parameter comprises an indication of the influx. 25. The system of claim 24, wherein pressure in the wellbore at the indication of the influx is correlated to pore pressure in a formation intersected by the wellbore. 26. The system of claim 24, wherein the choke is adjusted in response to the indication of the influx. 27. The system of claim 16, further comprising a choke, adjustment of which induces a loss of fluid from the wellbore, and wherein the at least one parameter comprises an indication of the loss of fluid. 28. The system of claim 27, wherein pressure in the wellbore at the indication of the loss of fluid is correlated to fracture pressure in a formation intersected by the wellbore. 29. The system of claim 27, wherein the choke is adjusted in response to the indication of the loss of fluid. 30. The system of claim 16, wherein the optical waveguide is positioned in an interior flow passage of the drill string.