CA2501736A1 - Continuous wellbore drilling system with stationary sensor measurements - Google Patents
Continuous wellbore drilling system with stationary sensor measurements Download PDFInfo
- Publication number
- CA2501736A1 CA2501736A1 CA002501736A CA2501736A CA2501736A1 CA 2501736 A1 CA2501736 A1 CA 2501736A1 CA 002501736 A CA002501736 A CA 002501736A CA 2501736 A CA2501736 A CA 2501736A CA 2501736 A1 CA2501736 A1 CA 2501736A1
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- CA
- Canada
- Prior art keywords
- wellbore
- drill
- force application
- drilling
- force
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The present invention provides continuous or near continuous motion drill strings which include motion sensitive and other MWD sensors which take stationary measurements while the drilling assembly is continuing to drill the wellbore. For simultaneous continuous drilling and stationary measurements, the present invention provides a drilling assembly wherein a force application system almost continuously applies force on the drill bit while maintaining a housing or drill collar section stationary. Motion sensitive sensors carried by the drill collar take stationary measurements. A steering device between the drill bit and the force application system maintains drilling of the wellbore along a prescribed well path.
Claims (22)
1. A drilling assembly for drilling a wellbore in a subsurface formation, comprising:
a drill bit at an end of said drilling assembly;
a force application device capable of continuously applying force on the drill bit to move the drill bit in the wellbore to drill said wellbore; and a slidable assembly uphole of the force application device having a slidable drill collar, said drill collar having a locking device, wherein the locking device engages the drill collar with the inside of said wellbore to maintain the drill collar stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore and thereafter disengages from the wellbore inside and allows the drill collar to move toward the force application device by the predetermined distance, wherein the force application device includes a traction device that continuously moves while being engaged with the wellbore wall to continuously apply force on the drill bit.
a drill bit at an end of said drilling assembly;
a force application device capable of continuously applying force on the drill bit to move the drill bit in the wellbore to drill said wellbore; and a slidable assembly uphole of the force application device having a slidable drill collar, said drill collar having a locking device, wherein the locking device engages the drill collar with the inside of said wellbore to maintain the drill collar stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore and thereafter disengages from the wellbore inside and allows the drill collar to move toward the force application device by the predetermined distance, wherein the force application device includes a traction device that continuously moves while being engaged with the wellbore wall to continuously apply force on the drill bit.
2. The drilling assembly of claim 1, wherein the traction device includes a plurality of continuous motion rollers that engage with the wellbore inside to provide traction force to the drilling assembly.
3. The drilling assembly of claim 1, wherein the force application device is operated by one of (i) a hydraulic power unit, (ii) an electric motor, and (iii) an electro-mechanical device.
4. The drilling assembly of claim 1 further comprising at least one sensor whose measurements are sensitive to movement of the sensor in the wellbore, said at least one sensor being carried at least in part by the drill collar, said at least one sensor taking measurements downhole during drilling of the wellbore when the drill collar portion is stationary relative to the wellbore.
5. The drilling assembly of claim 4, wherein the at least one sensor is selected from a group consisting of (i) a nuclear magnetic resonance sensor (ii) a formation testing device, (iii) a direction measuring device that includes at least one gyroscope, (iv) an acoustic device, and (v) a gamma ray device.
6. The drilling assembly of claim 4, wherein the at least one sensor includes a nuclear magnetic resonance sensor that comprises:
a magnet system that induces a static magnetic field in the formation surrounding the wellbore;
a radio frequency antenna that generates radio frequency signals at a particular frequency normal to a portion of the static magnetic field in a region of investigation in the formation; and a processor that processes signals responsive to the radio frequency signals to determine a characteristic of the formation.
a magnet system that induces a static magnetic field in the formation surrounding the wellbore;
a radio frequency antenna that generates radio frequency signals at a particular frequency normal to a portion of the static magnetic field in a region of investigation in the formation; and a processor that processes signals responsive to the radio frequency signals to determine a characteristic of the formation.
7. The drilling assembly of claim 4, wherein the at least one sensor includes a formation testing device to provide measurements for a property of the formation fluid.
8. The drilling assembly of claim 7, wherein the property of the fluid is selected from a group consisting of (i) an acoustic property of the collected sample, (ii) pressure, (iii) temperature, (iv) a physical property of the collected sample, and (v) a chemical property of the collected sample.
9. The drilling assembly of any one of claims 1 to 8 further comprising a steering device downhole of the force application device, said steering device selectively applying force to the wellbore inside to steer the drill bit in a preselected direction.
10. The drilling assembly of claim 1, wherein the drill collar portion slides over a piston disposed inside the drilling collar portion.
11. The drilling assembly of any one of claims 1 to 10 further comprising a coupling device that enables a drill pipe connected to the drilling assembly to engage with and disengage from a rotating member.
12. A drilling assembly for drilling a wellbore in a subsurface formation, comprising:
a drill bit at an end of said drilling assembly;
a force application device capable of continuously applying force on the drill bit to move the drill bit in the wellbore to drill said wellbore;
a slidable assembly uphole of the force application device having a slidable drill collar, said drill collar having a locking device, wherein the locking device engages the drill collar with the inside of said wellbore to maintain the drill collar stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore and thereafter disengages from the wellbore inside and allows the drill collar to move toward the force application device by the predetermined distance; and a steering device downhole of the force application device, said steering device selectively applying force to the wellbore inside to steer the drill bit in a preselected direction, wherein the steering device comprises a plurality of independently controlled ribs, each said rib capabled of extending outward from the drilling assembly to apply a different amount of force on the wellbore inside.
a drill bit at an end of said drilling assembly;
a force application device capable of continuously applying force on the drill bit to move the drill bit in the wellbore to drill said wellbore;
a slidable assembly uphole of the force application device having a slidable drill collar, said drill collar having a locking device, wherein the locking device engages the drill collar with the inside of said wellbore to maintain the drill collar stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore and thereafter disengages from the wellbore inside and allows the drill collar to move toward the force application device by the predetermined distance; and a steering device downhole of the force application device, said steering device selectively applying force to the wellbore inside to steer the drill bit in a preselected direction, wherein the steering device comprises a plurality of independently controlled ribs, each said rib capabled of extending outward from the drilling assembly to apply a different amount of force on the wellbore inside.
13. The drilling assembly of claim 12, wherein the steering device includes a control unit that controls the force applied by each said rib on the wellbore inside to maintain the drilling of the wellbore along a predetermined wellbore path.
14. A method for drilling a wellbore in a subsurface formation, comprising:
providing a drill bit at an end of a drilling assembly;
engaging a wellbore wall with a traction device associated with a force application device on the drilling assembly, the traction device continuously moving toward the drill bit while being engaged with the wellbore wall to continuously apply force on the drill bit;
providing a slidable assembly uphole of the force application device having a slidable drill collar, the drill collar having a locking device;
engaging the drill collar with the wellbore inside with the locking device to maintain the drill collar substantially stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore; and disengaging the drill collar from the wellbore wall to thereby allow the drill collar to move toward the force application device by the predetermined distance.
providing a drill bit at an end of a drilling assembly;
engaging a wellbore wall with a traction device associated with a force application device on the drilling assembly, the traction device continuously moving toward the drill bit while being engaged with the wellbore wall to continuously apply force on the drill bit;
providing a slidable assembly uphole of the force application device having a slidable drill collar, the drill collar having a locking device;
engaging the drill collar with the wellbore inside with the locking device to maintain the drill collar substantially stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore; and disengaging the drill collar from the wellbore wall to thereby allow the drill collar to move toward the force application device by the predetermined distance.
15. The method of claim 14, wherein the traction device includes a plurality of continuous motion rollers that engage with the wellbore inside to provide traction force to the drilling assembly.
16. The method of claim 14 further comprising steering the drill bit in a preselected direction with a steering device positioned downhole of the force application device, the steering device selectively applying force to the wellbore.
17. A method for drilling a wellbore in a subsurface formation, comprising:
providing a drill bit at an end of a drilling assembly;
applying a substantially continuous force on the drill bit with a force application device to move the drill bit in the wellbore to drill the wellbore;
providing a slidable assembly uphole of the force application device having a slidable drill collar, the drill collar having a locking device;
engaging the drill collar with the inside of said wellbore using the locking device to maintain the drill collar substantially stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore;
disengaging the drill collar from the wellbore wall to thereby allow the drill collar to move toward the force application device by the predetermined distance; and steering the drill bit in a preselected direction with a steering device downhole of the force application device, the steering device selectively applying force to the wellbore inside, wherein the steering device comprises a plurality of independently controlled ribs, each rib capable of extending outward from the drilling assembly to apply a different amount of force on the wellbore inside.
providing a drill bit at an end of a drilling assembly;
applying a substantially continuous force on the drill bit with a force application device to move the drill bit in the wellbore to drill the wellbore;
providing a slidable assembly uphole of the force application device having a slidable drill collar, the drill collar having a locking device;
engaging the drill collar with the inside of said wellbore using the locking device to maintain the drill collar substantially stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore;
disengaging the drill collar from the wellbore wall to thereby allow the drill collar to move toward the force application device by the predetermined distance; and steering the drill bit in a preselected direction with a steering device downhole of the force application device, the steering device selectively applying force to the wellbore inside, wherein the steering device comprises a plurality of independently controlled ribs, each rib capable of extending outward from the drilling assembly to apply a different amount of force on the wellbore inside.
18. The method of claim 17 further comprising controlling the steering device with a control unit that controls the force applied by each said rib on the wellbore inside to maintain the drilling of the wellbore along a predetermined wellbore path.
19. A drilling system for drilling a wellbore in a subsurface formation, comprising:
a derrick;
a drill string including tubing, said drill string being conveyed from said derrick into the wellbore;
a drilling assembly associated with said drill string;
a drill bit at an end of said drilling assembly;
a force application device capable of continuously applying force on the drill bit to move the drill bit in the wellbore to drill said wellbore; and a slidable assembly uphole of the force application device having a slidable drill collar, said drill collar having a locking device, wherein the locking device engages the drill collar with the inside of said wellbore to maintain the drill collar stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore and thereafter disengages from the wellbore inside and allows the drill collar to move toward the force application device by the predetermined distance, wherein the force application device includes a traction devices that continuously moves while being engaged with the wellbore wall to continuously apply force on the drill bit.
a derrick;
a drill string including tubing, said drill string being conveyed from said derrick into the wellbore;
a drilling assembly associated with said drill string;
a drill bit at an end of said drilling assembly;
a force application device capable of continuously applying force on the drill bit to move the drill bit in the wellbore to drill said wellbore; and a slidable assembly uphole of the force application device having a slidable drill collar, said drill collar having a locking device, wherein the locking device engages the drill collar with the inside of said wellbore to maintain the drill collar stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore and thereafter disengages from the wellbore inside and allows the drill collar to move toward the force application device by the predetermined distance, wherein the force application device includes a traction devices that continuously moves while being engaged with the wellbore wall to continuously apply force on the drill bit.
20. The drilling system of claim 19, wherein the traction device includes a plurality of continuous motion rollers that engage with the wellbore inside to provide traction force to the drilling assembly.
21. A drilling system for drilling a wellbore in a subsurface formation, comprising:
a derrick;
a drill string including tubing, said drill string being conveyed from said derrick into the wellbore;
a drilling assembly associated with said drill string;
a drill bit at an end of said drilling assembly;
a force application device capable of continuously applying force on the drill bit to move the drill bit in the wellbore to drill said wellbore;
a slidable assembly uphole of the force application device having a slidable drill collar, said drill collar having a locking device, wherein the locking device engages the drill collar with the inside of said wellbore to maintain the drill collar stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore and thereafter disengages from the wellbore inside and allows the drill collar to move toward the force application device by the predetermined distance; and a steering device downhole of the force application device, said steering device selectively applying force to the wellbore inside to steer the drill bit in a preselected direction, wherein the steering device comprises a plurality of independently controlled ribs, each said rib capable of extending outward from the drilling assembly to apply a different amount of force on the wellbore inside.
a derrick;
a drill string including tubing, said drill string being conveyed from said derrick into the wellbore;
a drilling assembly associated with said drill string;
a drill bit at an end of said drilling assembly;
a force application device capable of continuously applying force on the drill bit to move the drill bit in the wellbore to drill said wellbore;
a slidable assembly uphole of the force application device having a slidable drill collar, said drill collar having a locking device, wherein the locking device engages the drill collar with the inside of said wellbore to maintain the drill collar stationary relative to the wellbore while the force application device travels a predetermined distance from an initial position in the wellbore and thereafter disengages from the wellbore inside and allows the drill collar to move toward the force application device by the predetermined distance; and a steering device downhole of the force application device, said steering device selectively applying force to the wellbore inside to steer the drill bit in a preselected direction, wherein the steering device comprises a plurality of independently controlled ribs, each said rib capable of extending outward from the drilling assembly to apply a different amount of force on the wellbore inside.
22. The drilling assembly of claim 21, wherein the steering device includes a control unit that controls the force applied by each said rib on the wellbore inside to maintain the drilling of the wellbore along a predetermined wellbore path.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14753399P | 1999-08-05 | 1999-08-05 | |
| US60/147,533 | 1999-08-05 | ||
| CA002381324A CA2381324C (en) | 1999-08-05 | 2000-08-04 | Continuous wellbore drilling system with stationary sensor measurements |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002381324A Division CA2381324C (en) | 1999-08-05 | 2000-08-04 | Continuous wellbore drilling system with stationary sensor measurements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2501736A1 true CA2501736A1 (en) | 2001-02-15 |
| CA2501736C CA2501736C (en) | 2009-12-15 |
Family
ID=34575111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002501736A Expired - Fee Related CA2501736C (en) | 1999-08-05 | 2000-08-04 | Continuous wellbore drilling system with stationary sensor measurements |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2501736C (en) |
-
2000
- 2000-08-04 CA CA002501736A patent/CA2501736C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2501736C (en) | 2009-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20160804 |