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High-thick crude-oil adhesive-reducing agent and producing method therefor
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A production method and a viscosity reducing agent technology, applied in the field of heavy oil viscosity reducing agent, can solve problems such as difficulty in mining, and achieve the effects of wide adaptability, good effect and stable performance
Active Publication Date: 2009-09-23
孙保兴
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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
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Embodiment 1
[0028] At 35°C and normal pressure, add 5g fatty alcohol polyoxyethylene ether potassium sulfate, 30g acetyl monoethanolamine, 10g alkylphenol polyoxyethylene ether, 20g isooctyl alcohol polyoxyethylene ether, and stir until the mixture is uniform. Under the condition of stirring, add 35g of potassium citrate and 120g of water, keep warm at 50-55°C, and stir for 1 hour to obtain a light yellow viscous liquid with a viscosity of 300mpa.s (25°C).
Embodiment 2
[0030] At 50°C and normal pressure, add 5g fatty alcohol polyoxyethylene ether potassium sulfate, 60g acetyl monoethanolamine, 40g alkylphenol polyoxyethylene ether, 100g isooctyl alcohol polyoxyethylene ether, and stir until the mixture is uniform. Under the condition of stirring, add 45g of potassium citrate and 170g of water, keep warm at 50-55°C, and stir for 2 hours to obtain a light yellow viscous liquid with a viscosity of 260mpa.s (25°C).
Embodiment 3
[0032] At 55°C and normal pressure, add 5g of fatty alcohol polyoxyethylene ether potassium sulfate, 40g of acetyl monoethanolamine, 30g of alkylphenol polyoxyethylene ether, and 80g of isooctyl alcohol polyoxyethylene ether, and stir until they are evenly mixed. Under the condition of stirring, add 30g of potassium citrate and 175g of water, keep warm at 50-55°C, and stir for 3 hours to obtain a light yellow viscous liquid with a viscosity of 250mpa.s (25°C).
[0033] When using viscous crude oil viscosity reducer, it is necessary to prepare an aqueous solution containing high viscous crude oil viscosity reducer with a concentration of 0.8-1.5% by weight. The ratio of viscous crude oil visbreaker aqueous solution to crude oil is 3:7-1:9 After mixing, keep the temperature at 30-55°C for 2 hours, then stir properly, then the thick oil will become a low-viscosity oil-in-water emulsion.
[0034] Practical example:
[0035] example 1. Add 25g of an aqueous solution of 1.0% visco...
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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...
Claims
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