A kind of oil well water-based wax remover and preparation method thereof

Abstract

The invention discloses a water-based wax remover for oil wells and a preparation method thereof, which consists of the following components in weight percent: 18-25% mixed surfactant, 2-7% composite dispersant, 9-12% alcohol ether Cosolvent, 0.5-1.5% hydroxyethylene diphosphonic acid, 0.3-0.5% disodium hydrogen phosphate, 0.3-0.5% sodium hexametaphosphate, 1-3% stabilizer, and the balance is composite magnetized water; The mixed surfactant is composed of sodium oleoyloxyethanesulfonate, carbon fatty alcohol polyoxyethylene ether, octylphenol polyoxyethylene ether, and glycerol in a mass ratio of 4:2:1:1. The wax remover and preventive agent of the present invention significantly enhances the wax remover and preventive treatment effect of the wax remover and preventive agent through the effects of mixing surfactants, composite magnetized water, and the like.

Description

technical field [0001] The invention relates to the technical field of oilfield chemicals, in particular to a water-based wax remover and anti-wax agent for oil wells and a preparation method thereof. Background technique [0002] For crude oil with a certain amount of paraffin dissolved in it, during the exploitation process, with the decrease of temperature and pressure and the precipitation of gas, the so-called waxing phenomenon occurs. Wax deposition will block the oil-producing layer, reduce the production of the oil well, and also increase the load of the oil well, causing production accidents. [0003] In the production process of waxy crude oil, although various wax prevention methods can be used, the problem of wax deposition is still unavoidable in oil wells. Wax deposition seriously affects the normal production of oil wells, so measures must be taken to remove it. The wax removal methods commonly used in oil wells include mechanical wax removal, thermal wax re...

AI Technical Summary

Problems solved by technology

[0004] Among these wax removal methods, chemical wax removal and prevention occupies a dominant position, and chemical wax removal agents are divided into oil-based wax removers and water-based wax removers; and water-based wax removers The anti-wax agent has both wax removal and anti-wax effects, but the existing water-based anti-wax agents still have some problems in the anti-wax removal, such as the low efficiency of the use of surfactants, and the wax-removal effect is still not stable enough and efficient, etc. Etc., therefore, need a kind of novel water-based wax remover to solve these problems now

Images