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Novel crude oil drag reduction and viscosity reducing agent

A crude oil and resistance drop technology, applied in drilling equipment and other directions, can solve the problems of not clarifying the change of crude oil adsorption force, not using it, etc., to achieve the effect of reducing transportation resistance, reducing production resistance and stabilizing the formation.

Inactive Publication Date: 2005-12-28
JIANGSU MAYSTA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technology provided by the above patents uses surfactant compounding to emulsify, disperse, and reduce the viscosity of crude oil. It does not take corresponding measures to clarify that the active agent compound system can prevent formation clay from water swelling and prevent formation sand production, and does not clarify that adding this active agent Changes in the adsorption force of crude oil to formations and pipelines after viscosity reducer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Composition (mass percentage)

[0035] Polyoxyethylene nonylphenol ether (PEO)

[0036] (The molar ratio of nonylphenol to ethylene oxide is 1:30) 99.4

[0037] Chloroacetic acid (industrial grade, content above 99%) 0.4

[0038] NaOH (industrial grade,) about 0.2

[0039] Process conditions:

[0040] ①. In a 1000L synthesis kettle, add 994Kg of nonylphenol polyoxyethylene ether, and then heat to 40°C to melt uniformly.

[0041] ②. Slowly add 4Kg of chloroacetic acid and stir as it is added. Keep the temperature at 40°C (±2°C). After the addition, keep the temperature at 40°C (±2°C) for 1 hour.

[0042] ③. Then mix 2Kg of NaOH into a 20% aqueous solution, then add it to the synthesis kettle slowly with stirring, until the pH is adjusted to 8 (±0.2), and after the pH is adjusted to 8, keep it at 40°C (±2°C) for 1 hour.

Embodiment 2

[0044] Component mass percentage

[0045] Propylene glycol polyoxypropylene polyoxyethylene ether (PPOEO)

[0046] (Ethylene oxide accounts for 25% of PPOEO) 99.8

[0047] Chloroacetic acid (industrial grade, content above 99%) 0.1

[0048] NaOH (use after mixing 20% ​​aqueous solution) (industrial grade, anhydrous) about 0.1

[0049] Process conditions:

[0050] ①. Add 998Kg of propylene glycol polyoxypropylene polyoxyethylene ether to a 1000L synthesis kettle, and then heat to 40°C to melt uniformly.

[0051] ②. Slowly add 1Kg of chloroacetic acid into the above synthesis kettle, keep stirring at 40°C (±2°C) as it is added, and keep the temperature at 40°C (±2°C) for 1 hour after the addition.

[0052] ③. Then, mix NaOH into a 20% aqueous solution in the above synthesis kettle, add NaOH about 1Kg slowly with stirring, until the pH is adjusted to 8 (±0.2), after the pH is adjusted to 8, the temperature is 40℃ (±2) °C) Hold for 1 hour.

[0053] The low cost and effective drag and v...

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PUM

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Abstract

The invention provides a formula used for oil field heavy oil exploitation and crude oil transportation, which can reduce the viscosity of crude oil and at the same time reduce the adhesion of crude oil on the pipe wall and formation surface. It contains carboxylated polyether, sodium carbonate, sodium alkylsulfonate and PF-C. The carboxylated polyether includes an organic initiator with active hydrogen to initiate the generation of polyoxypropylene polyoxyethylene ether block copolymer; or an organic initiator with active hydrogen to initiate the addition of copolymerized polyethylene oxide to generate polyoxyethylene vinyl ether. After adding a certain amount of the drag and viscosity reducing agent in oil wells or in crude oil pipelines, not only can the viscosity of crude oil be greatly reduced. And the adhesive force on the negative interface (including steel pipe, cement, silicate, etc.) becomes smaller, so that the resistance of crude oil in the process of exploitation and transportation is greatly reduced, and it is non-toxic, harmless and easy to use.

Description

Technical field: [0001] The invention relates to a novel crude oil drag reduction and viscosity reduction agent used for the exploitation and transportation of heavy oil in oil fields. Background technique: [0002] More than 60% of crude oil in my country is heavy oil containing gums and asphaltenes. In the process of crude oil extraction and pipeline transportation, due to the high viscosity of crude oil, especially when the crude oil contains a certain amount of water, the crude oil will change as the crude oil flows. It becomes thicker and thicker, which is also the phenomenon of shear thickening of heavy oil containing a certain amount of water. Because of the high viscosity of crude oil, it strongly adsorbs on the formation and the pipe wall during the flow process, which not only increases the production resistance, but also seriously affects the oil recovery rate. Therefore, with the rapid growth of my country's national economy and the increase in oil demand, higher requ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
Inventor 辛寅昌安骏刘承东陈德展侯尔群赵泽浦
Owner JIANGSU MAYSTA CHEM
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