Claims
- 1. An assembly for acquiring information relating to a drill string while drilling in a well bore during a drilling operation, the assembly comprising:
- a first and a second measuring means each comprising at least one sensor with each sensor producing measurement signals representing sensed information, one of said measuring means being located on the drill string substantially at a surface of the well bore and the other measuring means being located on the drill string in a vicinity of a tool disposed at a lower end of the drill string;
- linking means including an electrical cable, said linking means being disposed between each of said sensors and a processing installation for processing the measurement signals supplied by said sensors and conveyed by said electrical cable of said linking means to the processing installation; and wherein
- said processing installation comprises means for processing of said measurement signals so that acquiring of said measurement signals from said first and second measuring means is synchronized in time.
- 2. An assembly as claimed in claim 1, wherein the processing installation is disposed at the surface of the well bore and synchronously in time records the measurement signals supplied by the at least one sensor of the first and second measuring means.
- 3. An assembly in accordance with claim 2 wherein:
- the means for processing issues a communication transmitted by the electrical cable to the other measuring means in response to the receipt of the measurement signals from the at least one sensor of the one measuring means which causes the other measuring means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- a memory, coupled to the processing installation, for synchronously storing the measurement signals from the first and second processing means as acquired by the processing installation synchronously in time.
- 4. An assembly as claimed in claim 1, wherein said linking means between the sensor of the first measuring means and the processing installation comprises:
- an electric connector to be plugged-in in a liquid environment and to connect the first measuring means to said electrical cable; and
- a socket for suspending said electrical cable and for electrically linking said electrical cable to said processing installation; and
- wherein the electrical cable includes at least one conductor located in an inner space of the drill string.
- 5. An assembly in accordance with claim 4 wherein:
- the means for processing issues a communication transmitted by the electrical cable to the other measuring means in response to the receipt of the measurement signals from the at least one sensor of the one measuring means which causes the other measuring means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- a memory, coupled to the processing installation, for synchronously storing the measurement signals from the first and second processing means as acquired by the processing installation synchronously in time.
- 6. An assembly as claimed in claim 1, wherein at least one of said linking means comprises at least one cabled pipe.
- 7. An assembly in accordance with claim 6 wherein:
- the means for processing issues a communication transmitted by the electrical cable to the other measuring means in response to the receipt of the measurement signals from the at least one sensor of the one measuring means, which causes the other measuring means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- a memory, coupled to the processing installation, for synchronously storing the measurement signals from the first and second processing means as acquired by the processing installation synchronously in time.
- 8. An assembly as claimed in claim 1, wherein:
- the second measuring means is located below a kelly or a device for bringing the tool into rotation, and wherein the linking means between the sensor of the first measuring means and the processing installation extends through the second measuring means.
- 9. An assembly in accordance with claim 8 wherein:
- the means for processing issues a communication transmitted by the electrical cable to the other measuring means in response to the receipt of the measurement signals from the at least one sensor of the one measuring means which causes the other measuring means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- a memory, coupled to the processing installation, for synchronously storing the measurement signals from the first and second processing means as acquired by the processing installation synchronously in time.
- 10. An assembly as claimed in claim 1, wherein the second measuring means is electrically connected to the processing installation, and wherein the linking means comprises a rotating electric coupling.
- 11. An assembly in accordance with claim 10 wherein:
- the means for processing issues a communication transmitted by the electrical cable to the other measuring means in response to the receipt of the measurement signals from the at least one sensor of the one measuring means which causes the other measuring means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- a memory, coupled to the processing installation, for synchronously storing the measurement signals from the first and second processing means as acquired by the processing installation synchronously in time.
- 12. An assembly as claimed in claim 1, wherein the first measuring means comprises at least one sensor adapted for measuring at least one of a weight of the tool, torque at the tool, angular acceleration, acceleration in at least one direction, bending moment in at least one plane, magnetic field in at least one direction, pressure and temperature inside and outside the drill string, and wherein the second measuring means comprises at least one sensor adapted for measuring at least one of internal pressure, torque, acceleration in at least one direction, tension, and angular acceleration.
- 13. An assembly in accordance with claim 12 wherein:
- the means for processing issues a communication transmitted by the electrical cable to the other measuring means in response to the receipt of the measurement signals from the at least one sensor of the one measuring means which causes the other measuring means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- a memory, coupled to the processing installation, for synchronously storing the measurement signals from the first and second processing means as acquired by the processing installation synchronously in time.
- 14. An assembly as claimed in claim 1, wherein the processing installation synchronizes the signals supplied from said first and second measuring means by supplying an acquisition order to the second measuring means when said processing installation receives a predetermined signal from the first measuring means.
- 15. An assembly in accordance with claim 14 wherein:
- the means for processing issues a communication transmitted by the electrical cable to the other measuring means in response to the receipt of the measurement signals from the at least one sensor of the one measuring means which causes the other measuring means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- a memory, coupled to the processing installation, for synchronously storing the measurement signals from the first and second processing means as acquired by the processing installation synchronously in time.
- 16. An assembly as claimed in claim 1, wherein:
- the processing installation is connected to at least one sensor located on a drill rig for measuring a rotation of the drill string or the displacement of a pipe hook in the drill string.
- 17. An assembly in accordance with claim 16 wherein:
- the means for processing issues a communication transmitted by the electrical cable to the other measuring means in response to the receipt of the measurement signals from the at least one sensor of the one measuring means which causes the other measuring means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- a memory, coupled to the processing installation, for synchronously storing the measurement signals from the first and second processing means as acquired by the processing installation synchronously in time.
- 18. An assembly in accordance with claim 1 wherein:
- the means for processing issues a communication transmitted by the electrical cable to the other measuring means in response to the receipt of the measurement signals from the at least one sensor of the one measuring means which causes the other measuring means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- a memory, coupled to the processing installation, for synchronously storing the measurement signals from the first and second processing means as acquired by the processing installation synchronously in time.
- 19. A method for acquisition of data representative of a drilling operation, the method comprising the steps:
- making an assembly of a drill bit, drill collars and a first measuring means comprising at least one sensor with each sensor producing measurement signals representing sensed information;
- lowering the assembly into a well by adding drill pipes;
- assembling, in a drill string, a second measuring means comprising at least one sensor with each sensor producing measurement signals representing sensed information;
- connecting said first measuring means and said second measuring means to a surface installation with a signal transmission means;
- rotating the drill bit; and
- processing and recording, by the surface installation, at least one measurement signal supplied from each of the first and second measuring means during the rotation of the drill bit, while synchronizing in time acquisition of at the least one measurement signal supplied from the first measuring means and the at least one measurement signal supplied from the second measuring means.
- 20. A method as claimed in claim 19, wherein:
- the second measuring means is located close to a surface of a well bore.
- 21. A method as claimed in one of claims 10 or 11, wherein the surface installation receives:
- from the first measuring means, measurement signals representing at least one of weight on the drill bit, torque on the drill bit, acceleration of the drill bit in at least one direction in a coordinate system, bending moment of the drill string in at least one plane, a magnitude of a magnetic field in at least one direction in a coordinate system, pressure and temperature inside of and outside the drill string, and angular acceleration of the drill string; and
- from the second measuring means, measurement signals representing at least one of internal pressure, torque, acceleration in at least one direction, tension, and angular acceleration of the drill string.
- 22. A method in accordance with claim 21 wherein:
- the processing by the surface installation includes issuing a communication transmitted with the transmission means to the first measuring means in response to the receipt of the measurement signals from the at least one sensor of the second measurement means which causes the first measurement means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- storing the synchronously acquired measurement signals synchronously in a memory.
- 23. A method as claimed in one of claims 19 or 20, wherein:
- the surface installation is connected to at least one other sensor located at the surface and wherein a signal from said at least one other sensor is synchronized in time with the signals received from the sensors of said first and second measuring means.
- 24. A method in accordance with claim 23 wherein:
- the processing by the surface installation includes issuing a communication transmitted with the transmission means to the first measuring means in response to the receipt of the measurement signals from the at least one sensor of the second measurement means which causes the first measurement means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- storing the synchronously acquired measurement signals synchronously in a memory.
- 25. A method in accordance with claim 19 wherein:
- the processing by the surface installation includes issuing a communication transmitted with the transmission means to the first measuring means in response to the receipt of the measurement signals from the at least one sensor of the second measurement means which causes the first measurement means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- storing the synchronously acquired measurement signals synchronously in a memory.
- 26. A method in accordance with claim 20 wherein:
- the processing by the surface installation includes issuing a communication transmitted with the transmission means to the first measuring means in response to the receipt of the measurement signals from the at least one sensor of the second measurement means which causes the first measurement means to transmit the measurement signals from the at least one sensor thereof to the processing installation; and further comprising
- storing the synchronously acquired measurement signals synchronously in a memory.
- 27. An assembly for acquiring information relating to a drill string while drilling in a well bore during a drilling operation, the assembly comprising:
- first and second measuring means each comprising at least one sensor with each sensor producing measurement signals representing sensed information, one of said measuring means being located on a drill string substantially at a surface of the well bore and the other measuring means being located on a drill string in a vicinity of a tool disposed at a lower end of the drill string;
- linking means including an electrical cable, said linking means being disposed between each of said sensors and a processing installation for processing the measurement signals supplied by said sensors and conveyed by said electrical cable of said linking means to the processing installation; and wherein
- said processing installation comprises means for processing of said measurement signals so that acquiring of said measurement signals from said first and second measuring means is synchronized in time; and wherein
- the processing installation synchronizes in time the measurement signals acquired from said sensors of said first and second measuring means by supplying an acquisition order to the second measuring means when said processing installation receives a predetermined signal from the first measuring means; and
- a memory for storing synchronously the acquired measurement signals from said sensors of said first and second measuring means.
Priority Claims (1)
Number |
Date |
Country |
Kind |
92 02273 |
Feb 1992 |
FRX |
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Parent Case Info
This application is a continuation of application Ser. No. 08/022,895, filed Feb. 26, 1993.
US Referenced Citations (15)
Foreign Referenced Citations (1)
Number |
Date |
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0 330 558 |
Feb 1989 |
FRX |
Continuations (1)
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Number |
Date |
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Parent |
022895 |
Feb 1993 |
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