Oil-soluble drag reducer

Abstract

The invention provides an oil soluble drag reduction agent which is applied to the exploitation in oil field and pour-viscosity reduction. The drag reduction agent is characterized in that the agent is made of compositions with the following weight percentage of: 1.5-3.0 percent of ZC-3180 pour point depressant; 2.0-3.5 percent of polyacrylic acid advanced C18-C24 mixed alcohol ester; 30-45 percent of crude benzene; 1.0-1.5 percent of polyethylene oxide octyl phenol ether; the rest is methanol. And the sum of the percent of the compositions is 100 percent. The oil soluble drag reduction agent has the effects that the requirement of the oil well single tube gathering process that the water content of the oil soluble drag reduction agent is less than 25 percent when the added amount is 50-100mg / l is satisfied, and the back pressure of the pipeline wellhead is lowered by 20-30 percent points.

Description

technical field [0001] The invention relates to the technical field of oilfield chemistry, in particular to an oil-soluble drag reducer, a water-soluble drag reducer formula for removing wax, preventing wax and reducing viscosity in oil wells with a water content greater than 25%, and a preparation method thereof. When the dosage is 50-100mg / l, it can meet the technical requirements of single-pipe gathering and transportation, and reduce the pour point and viscosity of the oil well produced fluid. Background technique [0002] In the production process of the oil field, for the single-pipe gathering and transportation process, in order to ensure the safety of the gathering and transportation, it is necessary to regularly add agents to reduce the pour point and viscosity, such as adding wax removers, viscosity reducers, wax inhibitors and other drag reducing agents. The wax remover, viscosity reducer and wax preventer used have good wax removal and viscosity reduction effects...

AI Technical Summary

Problems solved by technology

However, the amount of conventionally used chemicals is large, resulting in increased operating costs

The currently used drag-reducing agents such as wax remover, viscosity reducer, and anti-wax agent have a flash point of less than 20°C, which poses a great safety hazard. Many chemical combustion accidents have occurred in field application, so technicians began to look for A non-flammable chemical agent that can meet the needs of wax removal and viscosity reduction in oil wells, eliminating potential safety hazards