Analysis of Wax Formation Mechanism and Anti Wax Effect of Oil Well Tubing in a Certain Oilfield

Abstract

During the production process of oil wells, wax deposition is caused by factors such as temperature reduction and dissolved gas precipitation. Severe wax deposition in oil wells can cause tubing blockage, leading to a decrease in oil well production and even stopping production due to wax blockage, affecting normal oil well production. Therefore, wax deposition can have a serious impact on the wellbore and even oilfield production. This article takes a certain oilfield block as an example to analyze the mechanism of wax deposition in oil wells and compares the effectiveness of commonly used wax removal and prevention measures such as different hot washing processes, adding wax removers, running acoustic viscosity reduction and wax prevention devices along with the oil pipe, and hot washing packers for sealing wells. The results show that superconducting hot washing, adding wax remover, and using acoustic wave viscosity reducing and wax preventing devices can effectively slow down wax deposition in oil wells. The use of hot washing packers effectively solves the problem of long-term inability to hot wash sealed wells, and it is recommended to promote their use.