Analysis on working characteristics of cam-roller impact mechanism of rotary percussion drilling tool

被引：0

作者：

Sun Y. ^{[1
]}

Yi X. ^{[1
,2
]}

Wan J. ^{[3
]}

Ma J. ^{[4
]}

Wu J. ^{[1
]}

Yi J. ^{[1
]}

Yin G. ^{[5
]}

机构：

[1] College of Mechanical Engineering, Yangtze University, Jingzhou

[2] Hubei Provincial Innovation Center of Enterprise, University Alliance on Intelligent Petroleum Machinery, Jingzhou

[3] China Energy Digital Technology Group Co., Ltd., Beijing

[4] Cnooc Energy Development Co., Ltd., Engineering Technology Branch, Tianjin

[5] Hubei Jiaye Petroleum Machinery Co., Ltd., Jingzhou

来源：

Meitiandizhi Yu Kantan/Coal Geology and Exploration | 2024年 / 52卷 / 03期

关键词：

cam-roller; dynamic simulation; impact characteristics; rotary percussion drilling tool; rotary percussion rock breaking;

D O I：

10.12363/issn.1001-1986.23.07.0418

中图分类号：

学科分类号：

摘要：

Rotary percussion drilling tools can effectively improve their rock breaking efficiency in the deep and hard strata, thus having broad application prospects. The cam-roller is the key mechanism to realize the impact action, but the complex and changeable downhole environment leads to serious damage to the mechanism, which in turn affects the efficiency of rock breaking. Based on the test drilling data of rotary impact drilling tools in several wells, the cam-roller dynamics model was established, the working characteristics under different strokes, speeds and drilling pressures were analyzed by Autodyn (explicit dynamics), and the deformation characteristics of the mechanism were summarized to propose an optimization method. Besides, the analysis results were compared with the test data and the theoretical values to verify the accuracy of the calculation model. The results show that increasing the stroke can improve the impact effect, but the actual motion trajectory of rollers with a stroke greater than 10 mm will become smoother due to the influence of drilling speed, roller size, and cam contour curvature. When the rotating speed is 9-18 rad/s, the fluctuation of axial acceleration is large, which has a certain influence on the stability of drilling tools. The deformation characteristics at the inner edge of the cam are obvious when the drilling pressure increases, and its deformation is directly proportional to the drilling pressure. The deformation of the cam under 25 kN drilling pressure is about 2.6 times of 10 kN. As the top of the cam tooth and the inner edge of the roller are easily deformed points, a replaceable roller was installed at the top of the tooth and the roller was changed to the drum configuration. Thus, the characteristics of four types of cam contour lines: parabolic-straight-parabolic, quadratic polynomial, cycloid and seventh degree polynomial, were analyzed. The results indicate that the use of cycloid and seventh degree polynomial cam seat profiles and drum roller could improve the impact effect, and the calculation results could provide a reference basis for the design of rotary percussion drilling tools. © 2024 Science Press. All rights reserved.

引用

页码：164 / 175

页数：11

共 31 条

[1] MA Guangjun, WANG Jiachang, ZHANG Haiping, The design and experimental study of PDM driven rotary percussion drilling tool[J], Petroleum Drilling Techniques, 44, 3, (2016)
[2] DOU Xuqian, YAO Ningping, LI Xiushan, Et al., Experimental study on high-pressure hydraulic percussive rotary drilling based on single-tooth rock-breaking process[J], Coal Geology & Exploration, 50, 12, (2022)
[3] PENG Xu, HAO Shijun, Rock breaking mechanism of composite impact of full-size PDC bit based on finite element analysis[J], Coal Geology & Exploration, 49, 2, (2021)
[4] CAI Can, TAN Zhengbo, XUAN Lingchao, Et al., A study on drilling breakage and rock breaking mechanism by using separated impact-scraping and cutting compound bit[J], Journal of Vibration and Shock, 41, 16, (2022)
[5] LUO Ming, FENG Yongcun, GUI Yun, Et al., Development status and prospect of key technologies for high temperature and high pressure drilling[J], Petroleum Science Bulletin, 6, 2, pp. 228-244, (2021)
[6] CHEN Changchang, JI Guodong, WANG Haige, Et al., Geology-engineering integration to improve drilling speed and safety in ultra-deep clastic reservoirs of the Qiulitage structural belt[J], Advances in Geo-Energy Research, 6, 4, (2022)
[7] DONG Changle, Design and application of anti-drop drill pipe with fracture self-locking function[J], Coal Geology & Exploration, 51, 6, (2023)
[8] Wei LI, LING Xin, PU Hui, Development of a cutting force model for a single PDC cutter based on the rock stress state[J], Rock Mechanics and Rock Engineering, 53, 1, (2020)
[9] LI Siqi, LI Wei, YAN Tie, Et al., A study on the rock breaking mechanism of drill bits under combined loads and field applications[J], Journal of Vibration and Shock, 36, 16, (2017)
[10] NAJJARPOUR M, JALALIFAR H, NOROUZI-APOURVARI S., A review on half a century of experience in rate of penetration management: Application of analytical, semi-analytical and empirical models[J], Advances in Geo-Energy Research, 5, 3, (2021)

← 1 2 3 4 →