Waste oil-based mud treatment fluid, preparation method thereof and method for treating oil-based mud

Abstract

The invention provides a waste oil-based mud treatment fluid, a preparation method thereof and a method for treating oil-based mud, and relates to the technical field of waste oil-based mud. The wasteoil-based mud treatment fluid provided by the invention is prepared from the following preparation raw materials: an amphiphilic emulsifier, an auxiliary agent, inorganic salt, an oil phase componentand water, wherein the mass ratio of the amphiphilic emulsifier to the auxiliary agent is 1: 2-8; the mass ratio of the amphiphilic emulsifier to the inorganic salt is (1-3): (0.2-1.2); the mass ratio of the amphiphilic emulsifier to the oil phase component is 1: (3-8); and the mass ratio of the amphiphilic emulsifier to the water is 1: (5-20). According to the invention, the waste oil-based mudis fully demulsified by utilizing the amphiphilic emulsifier and the auxiliary agent, and the interfacial tension of the treating fluid is reduced and the agglomeration concentration of micelles is reduced by combining other raw materials, so that oil in the waste oil-based mud is effectively separated from a system, the crude oil in the waste oil-based mud is recycled, and the resource utilization of the oil-based mud is realized.

Description

technical field [0001] The invention relates to the technical field of waste oil-based mud treatment, in particular to a waste oil-based mud treatment liquid, a preparation method thereof, and a method for treating oil-based mud. Background technique [0002] Oil-based mud has complex components and contains more additives (clay, kaolin and other solid phase components with finer particle sizes are usually used to prepare oil-based mud), so it is easy to form an oil-water-solid three-phase stable system. Due to the high cost of oil-based mud, it is often used repeatedly until the performance is so bad that it can no longer be used before being discarded. In addition, waste oil-based mud has been mixed with old and new for a long time, resulting in the formation of a system with high oil content, high viscosity, and stable emulsification, which is difficult to handle. [0003] The traditional treatment methods for waste oil-based mud mainly include thermal distillation, bior...

AI Technical Summary

Problems solved by technology

Among them, the thermal distillation method will produce a large amount of flammable gas after heating the waste oil-based mud. If air or other oxidizing gases enter the equipment and come into contact with high-temperature oil vapor, there will be a danger of explosion; the bioremediation method has good safety, No secondary pollution, easy management, etc., but the biological domestication of bacteria takes a long time, takes up too much land, and is sensitive to climate; because the reinjection stratum method does not completely treat the waste oil-based mud, it not only causes a waste of resources, but also exists Potential risk of polluting groundwater; chemical demulsification method can fully recover oil resources in waste oil-based mud, separated oil can be used as fuel or as base oil, but the currently used chemicals are expensive and easily cause secondary pollution