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Fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate and preparation method thereof

A technology of alcohol polyoxyethylene polyoxypropylene ether carboxylate and alcohol polyoxyethylene polyoxypropylene ether carboxylate is applied in the field of fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate and its preparation, which can solve the problem of temperature resistance , intolerance to salt, poor emulsion stability and other problems, to achieve the effect of excellent temperature and salt resistance, small filtration loss, and good emulsion stability

Active Publication Date: 2013-12-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is that the oil-based drilling fluid emulsion in the prior art has poor stability, salt resistance, and temperature resistance. A new fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate is provided

Method used

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  • Fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate and preparation method thereof
  • Fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate and preparation method thereof
  • Fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] (a) Synthesis of dodecyl alcohol polyoxyethylene polyoxypropylene ether (m=2, n=10)

[0030] Add 186 grams (1 mole) of dodecanol, 3.0 grams of calcium oxide and 2.6 grams of barium oxide to the reactor equipped with a condensing device, a stirring device and a gas disperser, and add 20 grams of water, stirred for 1 hour. After removing moisture, lower the temperature to 80°C, slowly add sulfuric acid (20wt%) to neutralize the theoretical amount of the catalyst dropwise to prepare a highly active, highly selective calcium-barium composite catalyst reaction solution system, and heat the system temperature to 80-90°C ℃, turn on the vacuum system, dehydrate under high vacuum for 2 hours, then purge 3 to 4 times with nitrogen, adjust the reaction temperature of the system to 150 ℃ and slowly feed 88 grams (2 moles) of ethylene oxide, control the pressure ≤ 0.40MPa, after the reaction of ethylene oxide is completed, 580 grams (10 moles) of propylene oxide is slowly introduce...

Embodiment 2

[0039] (a) Synthesis of octanol polyoxyethylene polyoxypropylene ether (m=3, n=35)

[0040] Add 130 grams (1 mole) of octanol, 3.5 grams of calcium oxide and 3.0 grams of barium oxide to a reactor equipped with a condensing device, a stirring device and a gas disperser, and add 20 grams of water while heating to 135 ° C while nitrogen is flowing , and stirred for 1 hour. After removing moisture, lower the temperature to 80°C, slowly add sulfuric acid (20wt%) to neutralize the theoretical amount of the catalyst dropwise to prepare a highly active, highly selective calcium-barium composite catalyst reaction liquid system, and heat the system temperature to 80-80°C. 90°C, turn on the vacuum system, dehydrate under high vacuum for 2 hours, then blow with nitrogen for 3 to 4 times, adjust the reaction temperature of the system to 140°C and slowly feed 132 grams (3 moles) of ethylene oxide to control the pressure ≤0.40MPa, after the reaction of ethylene oxide is completed, slowly i...

Embodiment 3

[0046] (a) Synthesis of cetyl alcohol polyoxyethylene polyoxypropylene ether (m=1, n=8)

[0047] Add 242 grams (1 mole) of cetyl alcohol, 4.0 grams of calcium oxide and 3.3 grams of barium oxide to a reactor equipped with a condensing device, a stirring device and a gas disperser, and add 25 grams of water, stirred for 1 hour. After removing moisture, lower the temperature to 80°C, slowly add sulfuric acid (20wt%) to neutralize the theoretical amount of the catalyst dropwise to prepare a highly active, highly selective calcium-barium composite catalyst reaction liquid system, and heat the system temperature to 80-80°C. 90°C, turn on the vacuum system, dehydrate under high vacuum for 2 hours, then blow with nitrogen for 3 to 4 times, adjust the reaction temperature of the system to 120°C and slowly feed 44 grams (1 mole) of ethylene oxide to control the pressure ≤0.40MPa, after the reaction of ethylene oxide is completed, slowly inject 464 grams (8 moles) of propylene oxide at...

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Abstract

The present invention relates to a fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate oil base emulsifying agent and a preparation method thereof, wherein problems of poor emulsion stability, no salt tolerance and no temperature tolerance of the oil base drilling fluid in the prior art are mainly solved with the present invention. The technical scheme comprises that the fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate containing a molecule general formula is provided, wherein M is one ion selected from hydrogen, calcium, magnesium, barium, zinc, aluminum and iron, R is C8-C30 alkyl, m is the adduction number of the ethoxy group EO, and is an integer of 1-10, n is the adduction number of the propoxy group PO, and is an integer of 1-40, and x is an integer of 1-3. With the technical scheme, the problems in the prior art are well solved, and the fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate can be used in high water sensitivity and high temperature stratums and special drilling operations such as requirements of drilling of large displacement special wells and offshore horizontal wells, and the like.

Description

technical field [0001] The invention relates to a fatty alcohol polyoxyethylene polyoxypropylene ether carboxylate and a preparation method. Background technique [0002] With the continuous reduction of oil reserves and the difficulty of mining, countries all over the world have increased investment in the exploration and development of oil and gas resources in deep formations. The development of new oil reservoirs has become an urgent requirement for the development of major oil companies today. my country's unproven oil and gas resources are mainly distributed in the Tarim, Junggar, Qaidam, Turpan-Hami, and Sichuan basins. 73% of the resources are buried in deep layers, and the underground conditions are extremely complex. Therefore, oil and gas drilling and supporting facilities for deep and ultra-deep wells Advanced development technology has become a key factor restricting the development of oil and gas resources. As the formation depth increases, the formation tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/338C08G65/337C08G65/328C08G65/28C07C51/41C07C59/125C09K8/035C09K8/32
Inventor 沈之芹李应成陈安猛王辉辉
Owner CHINA PETROLEUM & CHEM CORP
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