Oil-in-water paraffin remover

Abstract

The invention relates to an oil-in-water paraffin remover, belonging to the field of oilfield chemistry. The invention is characterized in that the oil-in-water paraffin remover is prepared by mixing the following raw materials in percentage by weight: 10-20% of benzene, 5-15% of toluene, 10-15% of petroleum ether, 3-7% of surfactant, 2-8% of mutual solvent, 1-3% of alkaline matter, 3-10% of emulsifier and the balance of water. The oil-in-water paraffin remover is prepared by combining the advantages of the water-base paraffin remover and oil-base paraffin remover and lowering the harsh requirements for the emulsion-type paraffin remover. The oil-in-water paraffin remover has the advantages of high safety, environment friendliness and excellent paraffin removal effect.

Description

technical field [0001] The invention relates to an oil-in-water wax remover, which belongs to the field of oil field chemistry. Background technique [0002] For crude oil with a certain amount of paraffin dissolved in it, during the mining process, with the decrease of temperature and pressure and the precipitation of gas, wax deposition will occur. 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. Oil well wax removal technologies commonly used in oil fields mainly include mechanical wax removal technology, thermal wax removal technology, chemical wax removal technology, and microbial wax removal technology. [0003] For chemical wax removal technology, water-based wax remover and oil-based wax remover are commonly used. Among them, the advantages of oil-based wax remover are: strong adaptability to crude oil, fast wax melting speed, quick effect after adding...

AI Technical Summary

Problems solved by technology

However, it has the disadvantage of low relative density, which is not suitable for oil wells with high water content. Moreover, it has a low ignition point, is easy to catch fire, and has potential safety hazards.

The advantages of water-based wax remover are: higher relative density, better application effect on high water content oil wells, and safe to use, no risk of fire, but slow effect when added to oil wells

Although, at present, there are emulsion-type wax removers, but the effect is relatively general, and the requirements for emulsion-type wax removers are more stringent, not only to ensure stability during preparation and storage, but also to quickly break the emulsion when injected into the bottom of the well