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CN-121976795-A - Underground high-speed signal transmission device

CN121976795ACN 121976795 ACN121976795 ACN 121976795ACN-121976795-A

Abstract

The invention relates to the technical field of underground testing, in particular to an underground high-speed signal transmission device which comprises a driving mechanism connected with an impeller rotor, wherein the impeller rotor is positioned at one end of a guide, the other end of the guide is connected with a shell, the driving mechanism is arranged in the shell and connected with an underground central control short circuit through a circuit, a runner is arranged in the guide, a runner outlet is positioned at one end of the guide, which is close to the impeller rotor, a runner inlet is positioned at the other end of the guide, the position of the runner outlet corresponds to the position of a blade of the impeller rotor, and the driving mechanism is used for starting and driving the impeller rotor to rotate forwards or reversely according to a main control signal of the central control short circuit, so that the blade of the impeller rotor is overlapped or staggered with the position of the runner outlet, and the runner outlet is in a closed or opened state. The invention can realize high-speed and accurate transmission of underground signal data, improve the drilling construction efficiency and prolong the service life of equipment.

Inventors

  • QI YUE
  • LI RUNQI
  • ZHAO HANQING
  • ZHANG XIN
  • YANG ZHIJIAN
  • TAN XIAOPENG
  • ZHAO QIANG
  • XU YUEQING

Assignees

  • 大庆钻探工程有限公司
  • 中国石油天然气集团有限公司

Dates

Publication Date
20260505
Application Date
20241025

Claims (18)

  1. 1. The underground high-speed signal transmission device is characterized by comprising an impeller rotor (4), a guide (6), a driving mechanism and a shell; The driving mechanism is connected with the impeller rotor (4), and the impeller rotor (4) is positioned at one end of the guide (6); The other end of the guide (6) is connected with a shell, the driving mechanism is arranged in the shell, and the driving mechanism is connected with a underground central control short circuit through a circuit; A runner is arranged in the guide (6), the outlet of the runner is positioned at one end of the guide (6) close to the impeller rotor (4), the inlet of the runner is positioned at the other end of the guide (6), and the position of the outlet of the runner corresponds to the position of a blade of the impeller rotor (4); The driving mechanism is used for starting and driving the impeller rotor (4) to rotate forward or reversely according to the main control signal of the central control short circuit, so that the positions of the blades of the impeller rotor (4) and the positions of the flow channel outlets are overlapped or staggered, and the flow channel outlets are in a closed or open state.
  2. 2. A downhole high rate signal transmission apparatus according to claim 1, wherein: the faces of the impeller rotor (4) opposite to the guide (6) are plane.
  3. 3. A downhole high-rate signal transmission device according to claim 1, wherein the drive mechanism comprises a direct current drive motor (9), a main drive shaft (10) and a transformer (16); one end of the main driving shaft (10) is connected with the impeller rotor (4) through the guide (6); The other end of the main driving shaft (10) is connected with the direct current driving motor (9), and the direct current driving motor (9) is connected with a transformer (16); the transformer (16) is connected with the underground central control short circuit.
  4. 4. A downhole high rate signal transmission apparatus according to claim 3, wherein: The impeller rotor (4) and/or the main driving shaft (10) are made of tungsten-cobalt hard alloy, and WC coatings are sprayed on the surfaces of the impeller rotor and/or the main driving shaft.
  5. 5. A downhole high rate signal transmission apparatus according to claim 3, wherein: the impeller rotor (4) is provided with a mounting hole, and the shape of the mounting hole is not round; the end shape of one end of the main driving shaft (10) is matched with the shape of the mounting hole.
  6. 6. A downhole high rate signal transmission apparatus according to claim 3, wherein: A limiter (3) is arranged on one side of the impeller rotor (4) far away from the guide (6); the limiter (3) is connected with the main driving shaft (10) through a fixed screw.
  7. 7. A downhole high rate signal transmission apparatus according to claim 1, wherein: a detachable guide block (5) is arranged at one end of the guide (6) close to the impeller rotor (4), and the guide block (5) is in contact with the impeller rotor (4); the flow guide block (5) is provided with the flow channel outlet.
  8. 8. A downhole high rate signal transmission apparatus as defined in claim 7, wherein: The material of the guide (6) and/or the guide block (5) is tungsten cobalt hard alloy, and a WC coating is sprayed on the surface of the guide.
  9. 9. A downhole high rate signal transmission apparatus according to claim 1, wherein: One end of the guide (6) close to the impeller rotor (4) is cylindrical, a plurality of protruding parts are uniformly arranged around the circumference of the cylindrical outer side wall, and a gap between two adjacent protruding parts forms the flow channel outlet; Blades of the impeller rotor (4) correspond to the protruding portions, and when the blades rotate to the flow passage outlet between the two protruding portions, the flow passage outlet is shielded.
  10. 10. A downhole high rate signal transmission apparatus according to claim 9, wherein: the shielding is incomplete, namely the area of the blade is smaller than the area of the runner outlet.
  11. 11. A downhole high rate signal transmission apparatus according to claim 1, wherein: One end of the guide (6) far away from the impeller rotor (4) is connected with one end of the shell through a connecting sleeve (7) and an upper limiting ring (8).
  12. 12. A downhole high-rate signal transmission device according to claim 1, wherein the housing comprises an upper housing (11) and a lower housing (18); one end of the upper shell (11) is connected with the guide (6), and the other end of the upper shell (11) is connected with one end of the lower shell (18); and a multi-core connector (24) is arranged at one end, far away from the upper shell (11), in the lower shell (18), and the multi-core connector (24) is respectively connected with the driving mechanism and the underground central control short circuit through circuits.
  13. 13. A downhole high rate signal transmission apparatus according to claim 12, wherein: The other end of the lower shell (18) is connected with one end of a sliding sleeve (20) through a connecting mechanism, the sliding sleeve (20) and the lower shell (18) can rotate relatively along an axis, and the other end of the sliding sleeve (20) is connected with a downhole central control short circuit.
  14. 14. A downhole high-rate signal transmission device according to claim 13, wherein the connection means comprises a lower stop collar (21); One end of the sliding sleeve (20) is sleeved outside one end, far away from the upper shell (11), of the lower shell (18), and a limiting groove is formed in the inner side wall of the sliding sleeve (20); the outer part of the shell in the sliding sleeve (20) is connected with a lower limiting ring (21) through a threaded structure, and the lower limiting ring (21) is positioned in the limiting groove.
  15. 15. A downhole high rate signal transmission apparatus according to claim 13, wherein: A sealing ring (19) is arranged between the sliding sleeve (20) and the lower shell (18).
  16. 16. A downhole high rate signal transmission apparatus according to claim 1, wherein: The side wall of the shell is provided with an oil filling hole, and the oil filling hole is used for filling oil into the shell; an oiling plug (14) is arranged in the oiling hole.
  17. 17. A downhole high rate signal transmission apparatus according to claim 1, wherein: the guide device (6) and the impeller rotor (4) are externally provided with a drainage cover (1).
  18. 18. A downhole high rate signal transmission apparatus according to any of claims 1-17, wherein: The shell, the guide (6) and the impeller rotor (4) are positioned in a drill collar, and the drill collar is connected with a drilling machine vertical pipe; and a pressure sensor is arranged in the drilling machine vertical pipe and is used for detecting real-time well hydraulic pressure in the drill collar.

Description

Underground high-speed signal transmission device Technical Field The invention relates to the technical field of underground testing, in particular to an underground high-speed signal transmission device. Background The rotary guiding system integrates the drilling technology, the logging technology and the oil deposit engineering technology, and adopts geological parameter, engineering parameter measurement and control means while drilling to ensure that the real drilling well bore passes through the reservoir and obtains the optimal position, thereby having the characteristics of identifying the hydrocarbon reservoir while drilling and having strong guiding function. The system can realize true geosteering and is a high and new technology for 21 st century well drilling. At present, in a rotary guiding tool, after the short circuit of the azimuth resistivity, neutron density, azimuth gamma, sound wave and the like is connected, the parameter quantity required to be uploaded is very large, and the signal uploading speed of a pulse pressure change mode can only reach 0.5bit/s by driving the plug to move through the motor telescopic rod, so that the on-site use requirement cannot be met. Each time a group of data is uploaded, 10-15 minutes is needed, and the next construction can be continued because the whole uploading of the measurement result is needed to be completed, sometimes, in order to wait for the uploading of the underground data to be completed, the time-controlled drilling is needed to be reduced, and the data transmission mode mainly comprising positive pulses is practical and reliable, but the rate is too slow, so that the bottleneck for restricting the further development of the measurement while drilling system is formed. Disclosure of Invention The invention provides an underground high-speed signal transmission device, which aims to solve the problems that the data transmission speed is low, the transmission time is too long, more measurement modules cannot be connected in a hanging manner and the underground construction efficiency is affected due to insufficient power of the existing underground signal transmission mode. According to one aspect of the invention, there is provided a downhole high-rate signal transmission device comprising an impeller rotor, a guide, a drive mechanism and a housing; The driving mechanism is connected with the impeller rotor, and the impeller rotor is positioned at one end of the guide; The other end of the guide is connected with a shell, the driving mechanism is arranged in the shell, and the driving mechanism is connected with a underground central control short circuit through a circuit; the inside of the guide is provided with a flow passage, the outlet of the flow passage is positioned at one end of the guide, which is close to the impeller rotor, the inlet of the flow passage is positioned at the other end of the guide, and the position of the outlet of the flow passage corresponds to the position of the blade of the impeller rotor; the driving mechanism is used for starting and driving the impeller rotor to rotate forward or reversely according to the main control signal of the central control short circuit, so that the blades of the impeller rotor are overlapped with or staggered from the positions of the flow channel outlets, and the flow channel outlets are in a closed or open state. Preferably, the opposed faces of the impeller rotor and the guide are planar. Preferably, the driving mechanism comprises a direct current driving motor, a main driving shaft and a transformer; One end of the main driving shaft passes through the guide and is connected with the impeller rotor; The other end of the main driving shaft is connected with the direct current driving motor which is connected with a transformer; and the transformer is connected with the underground central control short circuit. Preferably, the impeller rotor and/or the main driving shaft is made of tungsten-cobalt hard alloy, and a WC coating is sprayed on the surface of the impeller rotor and/or the main driving shaft. Preferably, the impeller rotor is provided with a mounting hole, and the shape of the mounting hole is not circular; the shape of the end part of one end of the main driving shaft is matched with the shape of the mounting hole. Preferably, a limiter is arranged on one side of the impeller rotor away from the guide; The limiter is connected with the main driving shaft through a fixing screw. Preferably, a detachable flow guide block is arranged at one end of the guide close to the impeller rotor, and the flow guide block is in contact with the impeller rotor; The flow guide block is provided with the flow channel outlet. Preferably, the material of the guide and/or the guide block is tungsten-cobalt hard alloy, and a WC coating is sprayed on the surface of the guide and/or the guide block. Preferably, one end of the guide close to the impeller rotor is cylindrical, a plurali