A kind of high-efficiency water-based wax remover and anti-wax agent for crude oil and preparation method thereof

Abstract

The invention relates to a crude oil high-efficient water-based paraffin remover and inhibitor and a preparation method thereof, which belong to the technical field of oil field chemicals. The crude oil high-efficient water-based paraffin remover and inhibitor adopts maleic anhydride monomer mass as the basis, and is prepared from the compositions by weight: maleic anhydride, 0.3 to 0.7 time of methacrylic acid, 0.8 to 1.2 times of sodium allysulfonate, and 0.04 to 0.08 time of initiator ammonium persulfate. The preparation method of the crude oil high-efficient water-based paraffin remover and inhibitor comprises the steps of (1) preparing solutions: respectively preparing themaleic anhydride, the methacrylic acid, the sodium allysulfonate and the initiator ammonium persulfate into 10 to 20 percent of water solution through distilled water; (2) carrying out synthetic reaction: stirring, heating the sodium allysulfonate solution to be 80 to 90 DEG C, adding a mixed solution of a maleic anhydride monomer and a methacrylic acid monomer, and the initiator ammonium persulfate solution, and reacting for 1 to 2h at constant temperature; (3) adjusting pH: using NaOH to adjust a pH value to be 5 to 7. The crude oil high-efficient water-based paraffin remover and inhibitor provided by the invention has the advantages of simplicity in preparation, convenience in application, high paraffin removing and inhibiting efficiency, equal stress on removing and inhibiting, good stability and the like.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemicals, and in particular relates to a crude oil high-efficiency water-based wax remover and a preparation method thereof. Background technique [0002] At present, during the production and transportation of crude oil, due to changes in temperature and pressure at both ends of the pipeline, wax will be precipitated from the crude oil and may adhere to the inner wall of the pipeline. If it cannot be removed in time, it will cause clogging of oil pipes, decrease of pipeline transportation capacity, and shutdown of oil wells in severe cases. Therefore, reasonable and timely wax removal and prevention measures are important guarantees for normal production of oil fields. There are many methods of wax removal and prevention for oil gathering and transportation pipelines, such as mechanical wax removal, thermal wax removal, magnetic wax removal, chemical wax removal and other measures. The test and...

AI Technical Summary

Problems solved by technology

With the deepening and development of theoretical research on oilfield chemical additives, chemical wax removal and control has taken the leading role in various wax removal and control measures. Technical problems affecting the normal production of oil wells