Influence of carbide tooth grinding parameters on shaping efficiency of high steel grade tubing

¹ Engineering Technology Research Institute, Petro China Southwest Oil&Gasfield Company, Chengdu, Sichuan Province, 610056, China
² Engineering Technology Department of PetroChina Southwest Oil and Gasfield Company, Chengdu, Sichuan Province, 610056, China
³ Southwest Petroleum University School of Mechatronic Engineering, Chengdu, Sichuan Province, 610500, China

^* Corresponding author: tanggeng2024@163.com

Abstract

Complex oil and gas well service conditions very easily trigger downhole casing deformation and failure, resulting in most of the oil and gas field casing shaping and repairing the difficulty of rising, casing micro-plasticity and micro-expansion technology can effectively solve the problem of casing local shrinkage and bending and deformation, in order to study the grinding shoe alloy teeth cloth angle, grinding speed and grinding depth on the grinding force change rule, according to the grinding theory to establish a single tooth and casing microelement section plane numerical model Model, the use of Johnson-Cook damage isomorphism model to characterize the material dynamic cutting failure, through the numerical simulation results fitted to the grinding force as the dependent variable, alloy tooth angle, speed, depth of grinding for the independent variables of the evaluation formula. The analysis results show that the grinding force decreases with the change of alloy tooth front angle from 0° to 60°; the grinding force does not change significantly in the range of milling speed from 40r/min to 80r/min; and the grinding force increases gradually when the milling depth increases. It is concluded that the angle and depth of the alloy tooth front are the main controlling factors for controlling the grinding and milling capacity, and this understanding provides technical references for the design and optimization of casing repair and is of great significance for accurately predicting the shaping capacity of the deformed casing and ensuring the integrity of the wellbore.