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Signal processing system and method for torque measurement

A technology of torque measurement and signal processing, which is applied in the field of drilling, can solve problems such as poor signal-to-noise ratio, weak voltage signal changes, and measure effective signals of reaction torque, so as to achieve the effect of improving measurement accuracy

Active Publication Date: 2018-10-16
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the drill collar bears a small torque, the voltage signal change of the torque measuring device due to the influence of the torque is very weak, and the signal-to-noise ratio is poor. At this time, it is difficult to accurately measure the response by simply increasing the magnification Valid signal for torque

Method used

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  • Signal processing system and method for torque measurement
  • Signal processing system and method for torque measurement
  • Signal processing system and method for torque measurement

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Embodiment

[0040] 1. Drill collar device structure

[0041] See Picture 1-1 The downhole torque measurement device provided by the implementation of the present invention includes: downhole torque measurement and measurement drill collar installation body capable of bearing oil drilling pressure, installation of torque measurement sensor array circular holes, battery compartment, pressure measurement circuit compartment, MWD interface Protocol circuit cabin.

[0042] The torque measurement sensor is arranged in an equidistant circular array in the axial direction of the drill collar body. It is composed of a torque measurement ring embedded and pasted with a torque strain measurement body. The ring array can measure the dynamic parameter measurement short circuit during the coiled pipe drilling process. Send the measured torque signal to the measurement signal conditioning circuit for corresponding signal processing, and convert it into a digital torque value through AD sampling, and then tra...

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Abstract

The invention belongs to the technical field of drilling and relates to a signal processing system and method, in particular to a signal processing system and method for torque measurement. The signalprocessing system comprises a controller, a waveform generator, an alternating current exciting amplifying circuit, a torque strain measuring bridge, a prime amplifier, a band-pass filter, a post amplifier and a phase-locked amplifier which are sequentially connected in series. A bridge arm of the torque strain measuring bridge is composed of torque strain measuring bodies which are connected inseries, wherein the torque strain measuring bodies are arranged on the outer wall of a drill collar and have same included angles with the axis direction of the drill collar. Thus, the signal processing system and method have the following advantages that 1, through a while-drilling measuring mode, torque borne by a drilling tool can be obtained in real time, and thus support is provided for drilling tool parameter quick adjusting; and 2, torque change is monitored through the measuring bodies on a plurality of torque measuring sensor circular ring structures, and thus the measuring precisionis improved.

Description

Technical field [0001] The invention relates to a signal processing system and method, belonging to the field of drilling technology, and in particular to a signal processing system and method for torque measurement. Background technique [0002] MWD (Measurement While Drilling) refers to the continuous detection of information about the borehole or drill bit while the drilling rig is drilling. [0003] During the drilling process, accurate measurement while drilling of drilling engineering parameters such as weight on bit and torque near the bit is very important for safe and efficient drilling. With the increase of drilling depth, especially the development of various lateral wells and horizontal wells, various drilling accidents such as stuck drills, roller cones, and broken drill tools have occurred from time to time, which greatly brings great safety and efficiency to drilling production. Impact, real-time measurement of drilling engineering parameters such as the weight-on-b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/12
CPCE21B47/12
Inventor 贾衡天艾维平高文凯王家进毛为民洪迪峰盛利民窦修荣李明印
Owner BC P INC CHINA NAT PETROLEUM CORP
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