System used for measuring impact vibration state of downhole instrument while drilling

A technology of downhole instruments and shock vibration, applied in the field of oil drilling, can solve the problems of deformation of sub-joint joints in the downhole, reduce operation safety, inconvenient use, etc. Effect

Active Publication Date: 2014-07-02
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above devices and methods realize the real-time monitoring of the vibration state of the downhole drill bit / drill string during the drilling process, the measurement tools must be combined with MWD and other telemetry systems to send data to the ground. In the well, it is inconvenient to use; at the same time, during the drilling process, the joints of the downhole sub joints are prone to deformation and fracture, and the number of sub joints used is large, which reduces the safety of the operation

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  • System used for measuring impact vibration state of downhole instrument while drilling
  • System used for measuring impact vibration state of downhole instrument while drilling
  • System used for measuring impact vibration state of downhole instrument while drilling

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Embodiment Construction

[0028] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0029] In this specification, the term "upper, upper end, above" refers to the side away from the center of the earth along the longitudinal direction of the drill string; the term "lower part, lower end, below" refers to the side toward the center of the earth along the longitudinal direction of the drill string.

[0030] figure 1 It shows the conventional drilling equipment installed with the system according to the present invention, including the derrick 1, the drill bit 2, the instrument to be tested 3, the drill string 5, etc. Since the above-mentioned structure is the structure in the common drilling equipment, those skilled in the art can easily understand, The markings in the drawings are only for the convenience of understanding the present invention, and will not be introduced in detail in this specification. exist figure 1 In the illustrated embodi...

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Abstract

The invention provides a system used for measuring the impact vibration state of a downhole instrument while drilling. The system comprises a downhole part installed on a drill stem, the downhole part is provided with a shell, a sealed barrel installed in the shell and an antenna, and a drilling fluid channel is formed between the shell and the barrel. A circuit substrate is arranged in the barrel and comprises at least two opened mounting grooves which are spaced and arranged in the longitudinal direction, a measurement circuit is arranged in the first mounting groove, a control and transmission circuit is arranged in the second mounting groove, the measurement circuit is controlled by the control and transmission circuit at preset time to start to measure parameters, and the measurement result from the measurement circuit is received by the control and transmission circuit and then transmitted by the antenna. The system is high in safety performance, accurate in measurement point position, high in integration degree and convenient to assemble.

Description

technical field [0001] The invention relates to the field of petroleum drilling, in particular to a system for measuring the shock vibration state of downhole instruments while drilling. Background technique [0002] There are various types of downhole instruments with precise structures. In the process of drilling operations, high-intensity vibrations will be generated, which will generate impact loads on downhole instruments, which may cause unsatisfactory working results of downhole instruments, and even cause damage to the instruments in severe cases. Real-time detection of the impact strength, direction and frequency of the downhole instrument and its vibration state can accurately judge the condition of the downhole instrument, and control it in time when abnormal vibration occurs to prevent damage to the instrument. At the same time, it serves as a reference for the verification of the performance of the instrument and the calibration and analysis of the measurement ...

Claims

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Application Information

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IPC IPC(8): E21B47/00
Inventor 陈晓晖杨春国牛新明宋朝晖高炳堂王立双刘科满孙连环张辉
Owner CHINA PETROLEUM & CHEM CORP
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