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Method and device for telemetering torque moment of drill stem

A drill pipe and kelly technology, applied in drill pipe, drill pipe, measurement and other directions, can solve the problems of poor anti-scour ability, inconvenient installation, low accuracy, etc., and achieve the effect of low power consumption

Inactive Publication Date: 2009-12-16
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above measurement methods are all through indirect measurement of drill pipe torque, which has disadvantages such as low accuracy, inconvenient installation, and poor anti-scourability

Method used

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  • Method and device for telemetering torque moment of drill stem
  • Method and device for telemetering torque moment of drill stem
  • Method and device for telemetering torque moment of drill stem

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Experimental program
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Effect test

Embodiment Construction

[0012] The implementation method of applying the method and device to the diesel engine power drilling rig 50 is as follows: before running in the drill, the lower short connector 10 is connected with the lower end of the kelly 52 through the female thread 11, connected with the drill rod 53 through the male thread 12, and the upper short Connector 30 is installed at the position of bell mouth 54. Connect connector 42 to the control room through an external cable. The external cable is a four-core shielded cable, two of which are for power supply, and the other two are for communication. The shielding layer is grounded, and the short circuit is completed at this time. Install. When drilling starts, the turntable 51 drives the kelly to rotate, and the parameter collection board 20 collects the torque parameter through the sensor, packs, modulates, and amplifies the power, and then transmits the parameter to the sending coil 22 through the communication cable 21, and the sending ...

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Abstract

The invention provides a method and a device for telemetering the torque moment of a drill stem. The method and the device are characterized in that a lower short circuit is arranged between a square drill stem and the drill stem to collect and transmit data; an upper short circuit is arranged on the position of a mouth of a horn to receive and transmit data; a torque moment signal collected by a parameter collection board in the lower short circuit is transmitted to a sending coil to be converted into an alternating magnetic field; a receiving coil in the upper short circuit converts the induced alternating magnetic field into an alternative electric signal, and transmits the alternative electric signal to a demodulation board to obtain a torque moment signal by demodulating; and the signal is transmitted to a computer or display record equipment through a data cable and a connector. The method and the device have the advantages of directly and effectively completing uploading of measurement on the torque moment of the drill stem in real time with low electric energy consumption and function extension convenience. The method and the device are applicable to a power drill of a diesel engine.

Description

technical field [0001] The invention relates to the technique of measuring and transmitting the torque of the drill pipe in the drilling process of oil and natural gas. Background technique [0002] Drilling torque contains abundant downhole working condition information. Accidents such as the use of the drill bit, whether a cuttings bed is formed downhole, stuck drill, or broken drill tools all show abnormal torque signals. Therefore, torque monitoring during drilling is very important for safe production. [0003] At present, the surface drill pipe torque measurement methods of diesel engine-driven drilling rigs include: turntable drive chain tension sensor; turntable drive shaft universal joint is changed to strain type torsion sensor; Connector Torque Tester. The above measurement methods are all through indirect measurement of the drill pipe torque, which has disadvantages such as low accuracy, inconvenient installation, and poor anti-scourability. Contents of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B17/02
Inventor 林元华王其军卢强刘鹏周平龚建文邹光贵
Owner SOUTHWEST PETROLEUM UNIV
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