1 Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China
2 Engineering Technology Research Institute, Southwest Oil & Gas Field Company, PetroChina, Chengdu 610017, China
3 Exploration Division, Southwest Oil & Gas Field Company, PetroChina, Chengdu 641400, China
4 Drilling & Production Technology Research Institute, CNPC, Deyang 618300, China
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文章历史+
Received
Published
Revised
2025-03-31
2026-03-18
2025-12-11
Online Date
2026-06-26
PDF (16065K)
摘要
川南页岩气工区钻具组合振动事故率高,主要是随钻测量(measurement while drilling, MWD)系统和导向机构损坏,严重制约川南页岩气的安全经济高效开发。为有效降低钻井振动导致的工具故障率,以静态推靠式旋导在稳斜段振动为研究对象,建立ADAMS-ABAQUS多尺度耦合动力学模型,结合井下振动实时监测数据,构建微观共振特性与宏观振动参数的全维度评价体系。结果表明:振动频率、位移、应力和加速度的最大值均主要分布在钻具组合(bottom hole assembly, BHA)与井壁接触位置,揭示了推靠式旋导工具振动能量在钻具-井壁接触界面的空间聚集效应。钻具组合钻井过程中不易发生共振,旋导振动应力远低于钻具屈服强度,振动加速度存在超标,是振动失效的主要原因。钻压(weight on bit, WOB)、减振器配置及上扶正器虽对振动存在调控作用,但钻具扭矩对振动的综合影响更为显著,据此建立“钻参-振动加速度”双因素控制图版,为参数优化提供了理论依据,解决了现场遇振盲目同步降低所有参数的问题。现场应用显示较基准工况提速23%,验证了动态振动控制技术的有效性。研究成果为复杂页岩气钻井减振奠定了理论基础,并提供了增强性能的实际解决方案。
Abstract
Drilling tool vibration failures occur frequently in the southern Sichuan shale gas field, primarily as damage to measurement while drilling (MWD) systems and steering mechanisms. These failures significantly hinder the safe and cost-effective development of shale gas resources. To mitigate tool failures caused by drilling vibrations, the vibration characteristics of static push-the-bit rotary steering tools during inclination-holding operations were investigated. A multi-scale coupled dynamics model, integrating ADAMS and ABAQUS, was established and combined with real-time downhole vibration monitoring data. A comprehensive evaluation system was developed that incorporates both microscopic resonance characteristics and macroscopic vibration parameters. The results show that the maximum vibration frequency, displacement, stress, and acceleration are concentrated at the contact interfaces between the bottom hole assembly (BHA) and the wellbore, indicating a spatial energy aggregation effect at these points. Resonance is rarely observed during BHA operations, and vibration stresses remain well below the yield strength of the drill pipe. However, excessive vibration acceleration beyond operational limits is identified as the primary failure mechanism. Parameters such as weight on bit (WOB), shock sub configuration, and upper stabilizer placement influence vibration intensity, while torque variation exerts the most significant overall impact. Based on these findings, a dual-factor control chart was developed to relate drilling parameters with vibration acceleration thresholds, providing theoretical guidance for parameter optimization. This approach addresses the common field practice of indiscriminate parameter reduction in response to vibration. Field applications show a 23% increase in drilling speed compared with baseline operations, confirming the effectiveness of the proposed dynamic vibration control strategy. The research results establish a theoretical basis for vibration mitigation in complex shale gas drilling and offer practical solutions to enhance performance.
JIAN Zhi-kai, TANG Ming, WANG Qi-ren, WANG Shuang-ning, WANG Chen, FU Xing-yu, HE Shi-ming, DENG Xiang-hua.
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Science Technology and Engineering, 2026, 26(8): 3257-3270 DOI:10.12404/j.issn.1671-1815.2502176
统计数据,基于熵权理想算法(technique for order preference by similarity to an ideal solution,TOPSIS)确定钻压与转速的权重系数为0.43和0.57,即转速对振动影响更大。但是如图17所示,最大/平均振动加速度与振动失效无显著关联性,单一参数评价振动失效分险等级可靠性不足。
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