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Inspissated oil emulsion viscidity reducer

A technology of emulsifying viscosity reducing and viscosity reducing agent, applied in chemical instruments and methods, drilling composition and other directions, can solve the problem of high cost, achieve strong resistance to mineral salt, strong resistance to high mineral salt water, heavy oil Low viscosity effect

Active Publication Date: 2006-05-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has high salt resistance, for some heavy oils with more than 60% colloid content or more than 20% asphaltene content, the dosage is as high as 4%, and the cost is very high. The application of this compound has certain limitations. sex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] Take by weighing 50 ℃ viscosity be 643000mPa.s, colloid and asphaltenes content are respectively 20.4 weight % and 26.6 weight % super thick crude oil 100g of Xinjiang Tahe, 0.1g average molecular weight is 10000 petroleum sulfonate condensates (PF200A , Huiyuan Synthetic Agent Factory), 0.4g nonylphenol polyoxyethylene ether carboxylate (produced by Beijing Xingpu New Product Development Center), 0.002g cetyltrimethylammonium bromide (produced by Zhejiang Zancheng Technology Co., Ltd. ), 0.5g of water is made into an emulsified viscosity reducer, diluted with 43g of high salinity hard water (total salinity 200000mg / l, wherein the concentration of calcium and magnesium ions is 20000mg / l) and added to the above heavy oil, at 50 ℃ After stirring for 5 minutes, the viscosity of the emulsified heavy oil was tested with a Hakke VT550 rotational viscometer (100 rpm), and the test results are shown in Table 1.

example 2

[0032]Take by weighing 50 ℃ viscosity be 74880mPa.s, colloid and asphaltene content are respectively 61.3% by weight and 9.5% by weight Shengli heavy oil 100g; Agent factory product), 0.4g nonylphenol polyoxyethylene ether carboxylate (produced by Beijing Xingpu New Product Development Center), 0.01g cetyltrimethylammonium chloride (produced by Zhejiang Zancheng Technology Co., Ltd.), 0.1 Make an emulsified viscosity reducer with 6 g of water, dilute it with 66 g of high salinity hard water (the total salinity is 200,000 mg / l, in which the concentration of calcium and magnesium ions is 20,000 mg / l), add it to the above heavy oil, and stir for 5 minutes at 50°C Finally, Hakke VT550 type rotational viscometer (100 rpm) tests the viscosity of the emulsified heavy oil, and the test results are shown in Table 1.

example 3

[0034] Take by weighing 50 ℃ viscosity be 46700mPa.s, colloid and asphaltene content are respectively 30.8% by weight and 17.6% by weight Xinjiang heavy oil 100g, take by weighing 0.05g average molecular weight and be 8000 petroleum sulfonate condensate (PF200A, Huiyuan Synthetic agent factory product), 0.05g nonylphenol polyoxyethylene ether phosphate ester salt (produced by Beijing Xingpu New Product Development Center), 0.1g polyoxyethylene polyoxypropylene alkyl alcohol ether (Jinan Reagent Factory), 2g water Make an emulsified viscosity reducer, dilute it with 35g of hard water (total salinity 20000mg / l, of which the concentration of calcium and magnesium ions is 250mg / l), add it to the above heavy oil, stir at 50°C for 5 minutes, the Hakke VT550 type rotational viscosity Meter (100 rpm) tests the viscosity of the emulsified heavy oil, and the test results are shown in Table 1.

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Abstract

A thickened oil emulsifying viscosity reducer consists of anion surface activator, non-ionic-anion surface activator, demulsifier and water in proportion by 1:0.1-50:0.01-20 and water content is 0.2-5000 times of the sum of a, b and c. Anion surface activator comprises sodium salt and calcium salt of petroleum sulfoacid salt methyl condensate and sulfonated lignin; non-ionic-anion surface activator is chosen organic phosphate salt, sulfuric ester salt , carboxylate and sulfosalt of alkylphenol or fatty alcohol-polyoxyethylene ether; demulsifier is copolymer of alkyl ammonium halide cation demulsifier, polyethylene glycol polyoxytrimethylene polylol ether non-ionic demulsifier or polyethylene glycol polyoxytrimethylene polyethylene polyamines block. It has strong emulsifying ability and low thickened oil viscosity,

Description

technical field [0001] The invention relates to a heavy oil emulsifying viscosity reducing agent, which is not only suitable for emulsifying and reducing the viscosity of ordinary heavy oil, but also suitable for emulsifying and reducing the viscosity of heavy oil with high colloid or high asphaltene content under the condition of ultra-high mineral salt formation. technical background [0002] The emulsification viscosity reduction method is a commonly used method for mining heavy oil at present. Through the adsorption of the emulsification viscosity reducer on the oil-water interface, the oil-water interfacial tension is reduced, and the heavy oil is transformed from the water-in-oil emulsified state into the oil-in-water emulsion, which greatly reduces Viscosity is convenient for normal mining. Alkali is generally added to the emulsified viscosity reducer formula to reduce the amount of additional surfactants, but this method is not suitable for alkali-sensitive formations...

Claims

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Application Information

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IPC IPC(8): C09K8/524
Inventor 秦冰彭朴
Owner CHINA PETROLEUM & CHEM CORP
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