“璇玑” 导向工具与底部钻具组合动力学响应及安全分析

打开文本图片集

中图分类号：TE921 文献标识码：A DOI：10.12473/CPM.202405013

He Junjie，Mao Liangjie，Liu Xiaobin，etal.Dynamic response and safety analysis of“Xuanji”steering tool[J].ChinaPetroleumMachinery，2025，53（5）：39-47.

Dynamic Response and Safety Analysis of “ Xuanji” Steering Tool

He Junjie¹Mao Liangjie1²Liu Xiaobin³Chen Tao³Yu Lei³Yuan Yuan² （1.Schlof Mechanical Enginering，Southwest Petroleum University；2.State KeyLaboratoryofOilandGas ReservoirGeology and Exploitation，Southwest Petroleum University；3.China Oilfield Services Limited）

Abstract： The“Xuanji” steering tool uses three independent wing ribs which push against the borehole wall to generate bias force，soas to achieve efective control of wellbore trajectory and thus improve drilling effciency. However，this design complicates the dynamic behaviors of the botom hole assembly（BHA）.Depending on the special structure and material properties of the“Xuanji”steering tool，and considering the factors such as wellbore trajectory，driling assembly，contact collision between drillstring and wellbore，and bit-rock interaction，a dynamic modelof entire drill string with the“Xuanji” stering tool and asafetyanalysis model of the“Xuanji”steering tool and BHA were established based on the Lagrange equation.Then，on the basis of test verification，and actual wels，the influences of drilling parameters and centralizer positions on the dynamics of BHA were analyzed. The results show that increasing the weight on bit significantly increases the bending deformation and vibration intensity of the BHA，and the equivalent stressof the“Xuanji”steering tol （at drive shaft）greatly increases.Increasing the rotation speed does not necessarily exacerbate the bending deformation of the BHA，and does not greatly mpact the equivalent stressand fatigue life. Installng a centralizer may not necessarily improve the bending deformation of the BHA，but itcan inhibit vibration to a certain extent.Theresearch conclusions provide a guidance for the use of the“Xuanji” steering tool.

Keywords： rotary steering tool; drilling parameter; BHA； dynamic behavior

0引言

随着我国油气资源开采进入非常规油气开采阶段，对钻井技术提出了更高的要求[1-5]。（剩余11661字）