High-thick crude-oil adhesive-reducing agent and producing method therefor

Abstract

The high-viscosity crude oil viscosity reducer and production method of the present invention belong to the field of petroleum, in particular, a heavy oil viscosity reducer and production method that can effectively reduce the viscosity of crude oil in the oil recovery process of petroleum crude oil, and the high-viscosity crude oil viscosity reducer component The weight ratio is: 1 part of fatty alcohol polyoxyethylene ether potassium sulfate, 6-12 parts of acetyl monoethanolamine, 2-8 parts of alkylphenol polyoxyethylene ether, 3-20 parts of isooctyl alcohol polyoxyethylene ether, potassium citrate 6-10 parts, 25-35 parts of water, the viscosity at 25°C is 250-350mpa.s; when used, it needs to be prepared with a concentration of 0.8-1.5% by weight of high-viscosity crude oil viscosity reducer. The invention has good low-temperature viscosity-reducing effect on petroleum crude oil, stable performance, wide adaptability, does not contain alkali, makes crude oil form oil-in-water emulsion, greatly reduces viscosity, and can be widely used in the exploitation of heavy oil. The invention provides a novel high-viscosity crude oil viscosity reducer, which solves the difficult problem of heavy oil exploitation.

Description

technical field [0001] The high-viscosity crude oil viscosity reducer and production method of the invention belong to the field of petroleum, in particular to a heavy oil viscosity reducer and production method that can effectively reduce the viscosity of crude oil in the process of petroleum crude oil recovery. Background technique [0002] The amount of colloid and bitumen contained in the crude oil stored in the ground directly affects the viscosity of crude oil. If the crude oil viscosity exceeds 6.0×10 3 mpa.s call it heavy oil. Under the condition of 50°C in the formation, some of them cannot be mined without taking some physical and chemical measures at only 10°C. The viscosity of crude oil exceeds 2.0×10 4 Above mpa.s, it is called high-viscosity crude oil. [0003] The commonly used methods for heavy oil production are steam huff and puff and electric heating method, that is, hot steam of 10-30MPa is injected into the oil layer, and the temperature of the crude...

AI Technical Summary

Problems solved by technology

At present, in the oil reservoirs discovered in my country's Liaohe, Shengli, Xinjiang and other oil fields, a considerable part of the crude oil has a viscosity of 2.0×10 4 mpa.s—1.0×10 5 mpa.s, all of which belong to heavy oil, are very difficult to exploit