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Near-bit measurement-while-drilling device and method

A measurement-while-drilling, near-bit technology, used in measurement, earth-moving, wellbore/well components, etc., can solve problems such as temperature drift, wireless transmission interruption, inability to guarantee wireless transmission stability and continuity, and ensure Stability and continuity, the effect of meeting measurement needs

Pending Publication Date: 2021-05-07
GUOYI PETROLEUM TECH (WUXI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The wireless transmission module of the existing near-drill bit measurement device in the downhole high-temperature environment will cause temperature drift due to high temperature problems, resulting in interruption of wireless transmission, so the stability and continuity of wireless transmission cannot be guaranteed
The existing near-drill bit measurement only uses gamma energy spectrum measurement to identify formations, and its measurement data is relatively single, which cannot meet the needs of modern measurement

Method used

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  • Near-bit measurement-while-drilling device and method
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  • Near-bit measurement-while-drilling device and method

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specific Embodiment approach 1

[0036] Embodiment 1: The temperature correction module is composed of a monitoring system and a correction system. The monitoring system is used to monitor in real time the temperature of the surrounding working environment collected by the temperature sensor of the parameter measurement module. The correction system performs correction operations through the chip according to the monitored temperature. And the electronic circuit of the wireless transmission transmitting module and the wireless transmission receiving function module is fed back, and the transmitting frequency of the electromagnetic wave is adjusted to ensure the stability of the transmission.

specific Embodiment approach 2

[0037] Embodiment 2: The temperature correction module is composed of a monitoring system and a correction system. The monitoring system is used to monitor in real time the temperature of the surrounding working environment collected by the temperature sensor of the parameter measurement module. The correction system performs correction operations through the chip according to the monitored temperature. , after the calculation, the resonant frequency of the receiving coil is adjusted through the relay / MOS tube and the tuning capacitor, so that the resonant frequency remains unchanged to ensure the stability of wireless communication.

[0038] In a specific embodiment, the electromagnetic wave transmitting and receiving coil part 11 in the electromagnetic wireless transmission transmitting module and the electromagnetic wireless receiving module is provided with a protective cover separately, and the drill collar part of the protective cover and the coil base adopts a coating tre...

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Abstract

The invention provides a near-bit measurement-while-drilling device. The device has a wireless transmission function, a multi-parameter measurement function and an intelligent analysis function, the stability and continuity of wireless transmission are ensured, and the measurement requirement is met. The device comprises a transmitting drill collar assembly, a receiving drill collar assembly and a screw rod, wherein one end of the transmitting drill collar assembly is used for being connected with a drill bit, the other end of the transmitting drill collar assembly is fixedly arranged at one end of the screw rod in the length direction in a sleeving mode, the other end of the screw rod in the length direction is fixedly connected with the connecting end of the receiving drill collar assembly, an electromagnetic wireless transmission transmitting module, a temperature correction module and a parameter measurement module are fixedly arranged in an inner groove of the transmitting drill collar assembly, and an electromagnetic wireless receiving module, a temperature correction module and an intelligent analysis module are integrated in the receiving drill collar assembly.

Description

technical field [0001] The invention relates to the technical field of near-drill measurement-while-drilling, in particular to a near-drill measurement-while-drilling device, and the invention also provides a measurement method for the measurement-while-drilling device. Background technique [0002] The wireless transmission module of the existing near-drill measurement device in the downhole high-temperature environment will have temperature drift due to high temperature problems, resulting in interruption of wireless transmission, so the stability and continuity of wireless transmission cannot be guaranteed. The existing near-drill bit measurement only uses gamma energy spectrum measurement to identify formations, and its measurement data is relatively single, which cannot meet the needs of modern measurement. Contents of the invention [0003] In view of the above problems, the present invention provides a near-drill measurement while drilling device, which enables the ...

Claims

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Application Information

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IPC IPC(8): E21B47/11E21B47/13E21B47/07E21B47/022E21B47/00
CPCE21B47/022E21B47/00
Inventor 孙哲冯泽东贺羽
Owner GUOYI PETROLEUM TECH (WUXI) CO LTD