How to take care of the phenomenon of body rib drill rod wear and tear
Release time:
2019-10-24
In ultra-deep wells, highly deviated wells, extended-reach wells, and horizontal wells, the drilling time of the body rib drill pipe is prolonged, and the lateral force of the drill string on the casing is increased, so the problems of friction and wear of the casing and the drill string are increasing protruding . The direct consequence of severe wear and tear is the rapid wear of the drill string, leading to premature failure; casing wear and tear will reduce the crushing strength and internal pressure strength of the casing string, causing the casing string to collapse , deform and leak. Well scrapped. Not only will it affect our mining work, but in serious cases, it will even threaten the life and safety of workers. In response to this problem, our service technicians came up with some solutions . The application of the body rib drill pipe is not limited to the coal mining industry. Now many industries will use the body rib drill pipe, and the drilling and mining in many places will cause serious damage to the body rib drill pipe joints . The problem of friction between the joints of the supporting equipment and the casing cannot be ignored. The mechanism of friction and wear of drill pipe and casing, a series of problems caused by it and their preventive measures are studied in depth. The main research contents include: In order to explore the mechanism of friction and wear of drill pipe joint and casing , different loads are studied by finite element method. The distribution of contact pressure between the lower joint and the casing , and a mathematical model of the maximum contact pressure and the amount of wear was established. The analysis results well explain the principle of reducing casing wear by single and double-sided welding hardened bands of drill pipe joints, and provide a theoretical basis and technical basis for the process of welding hardened bands of drill pipe joints. In-depth theoretical analysis and experimental research on friction and thermal cracking of drill pipe joints, the mechanism and process of thermal cracking failure of drill pipe joints are clarified, and measures to reduce or prevent thermal cracking of joints are proposed.
Focus on hot spots
MESSAGE BOARD
No matter you have any questions about the product, you can leave us a message and we will arrange a professional team to reply for you!
©2025 Ruilong Drilling Tools All rights reservedWebsite Powered by www.300.cn