Analysis of anti-vibration performance of small logging while drilling instrument based on finite element analysis

Wei, Zhao; Yu, Jie; Li, Gang

doi:10.1007/s13204-021-02035-8

Cited by 2 publications

(2 citation statements)

References 27 publications

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“…As shown in Figure 1, the LWD technology plays a vital role in the design and application of directional wells, especially horizontal wells, multi-branch wells, and extended-reach wells. For previous no-go reservoirs with very challenging drilling environments, such as high-pressure and high-temperature environments or extremely complex geological environments, the utilization of LWD has made exploitation possible [2,3]. Therefore, in recent years, the increasing demand for LWD has led to its rapid development, but it still faces challenges such as slow transmission rates, unstable signal quality, and an emerging plethora of theoretical methods without a perfect one.…”

Section: Introductionmentioning

confidence: 99%

A Review of Communication Technologies in Mud Pulse Telemetry Systems

Li,

2023

Electronics

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Mastering real-time and accurate downhole information is crucial for ensuring drilling safety, improving drilling efficiency, and maximizing economic benefits. In recent years, logging while drilling (LWD) technologies, represented by mud pulse telemetry (MPT), achieved significant success. However, they still face challenges such as a large amount of downhole information conflicting with low information transmission rates, severe channel distortion, strong noise interference, and weak surface receiving signals. Therefore, this review collects and updates the papers, patents, and conference articles in the relevant field over the past ten years. Starting from the basic structure of communication systems, the downhole signal coding and modulation technologies of the MPT system are discussed. The attenuation reflection brought by the mud channel and various noise interferences in the system are described. The surface noise cancellation, channel equalization, synchronization, and decoding are studied in detail. By analyzing the theoretical principles, development breakthroughs, and relevant challenges that can improve the development of LWD technologies, this review aims to assist researchers in the field in obtaining the latest references and strategies.

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Section: Introductionmentioning

confidence: 99%

A Review of Communication Technologies in Mud Pulse Telemetry Systems

Li,

2023

Electronics

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“…The working state structure diagram of push-pull system is shown in Figure 1. During logging, the motor drives the thrust rod and thrust plate to move forward in a straight line through the lead screw, thus compressing the spring and opening the push arm, thus driving the push plate to move until the pad is attached to the well wall [6]. When the pad is completely attached to the well wall, the motor is powered off, and the spring provides the push force of the pad.…”

Section: Introduction Of Microsphere Focused Logging Tool Push-pull S...mentioning

confidence: 99%

Structural Reliability Analysis of Microsphere Focused Logging Tool Based on Response Surface Method

Zhao,

Sun,

Zheng

2023

AJST

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The push-pull system of microsphere focused logging tool is an important moving mechanism of this type of logging tool. The push-pull system will periodically bear large loads under working conditions and is prone to stress concentration. The structural strength reliability of the push-pull system is related to the logging accuracy and even the success or failure of the logging task. Based on ANSYS workbench software, this paper first conducts modeling and static simulation on the push-pull system of microsphere focused logging tool under working conditions, then conducts sensitivity analysis and experimental design on the basis of this analysis, and then conducts response surface analysis on the key stressed components of the push-pull system according to the analysis results. Finally, six sigma module is used to analyze the reliability of the push-pull system, and the structural strength reliability of the push-pull system is given by the probability distribution table obtained from the analysis. The analysis results show that the maximum equivalent stress occurs on the link arm of the push-pull system under working condition. The strength reliability of the link arm of the push-pull system under current working condition is high, and it can meet the daily logging requirements. However, there is still room for further design optimization.

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Analysis of anti-vibration performance of small logging while drilling instrument based on finite element analysis

Cited by 2 publications

References 27 publications

A Review of Communication Technologies in Mud Pulse Telemetry Systems

A Review of Communication Technologies in Mud Pulse Telemetry Systems

Structural Reliability Analysis of Microsphere Focused Logging Tool Based on Response Surface Method

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