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Quinoline derivatives, preparation method and application thereof, and corrosion and scale inhibitor composition

A technology of corrosion and scale inhibitor and derivatives, which can be used in drilling compositions, chemical instruments and methods, and earth-moving drilling, etc. Degradation, excellent corrosion and scale inhibition effect

Active Publication Date: 2017-07-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, judging from the current research and application situation, whether it is the agent or the injection process, it is mainly aimed at inhibiting the corrosion and scaling of the surface gathering and transportation system and the production oil well, but there are few studies on the protection of the water injection wellbore.
Especially the research on corrosion and scale inhibitors under the condition of high temperature and high pressure in the wellbore has not been reported

Method used

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  • Quinoline derivatives, preparation method and application thereof, and corrosion and scale inhibitor composition
  • Quinoline derivatives, preparation method and application thereof, and corrosion and scale inhibitor composition
  • Quinoline derivatives, preparation method and application thereof, and corrosion and scale inhibitor composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This example was used to prepare 2-methyl-5-polyoxyethylene-quinoline.

[0047] Add 19.2g of 2-methyl-5-hydroxyquinoline (chemical reagent, TCI (Shanghai) Chemical Industry Development Co., Ltd.), catalyst (sodium hydroxide, 0.1 g) into the reactor, close the reactor, and replace with nitrogen Air in the kettle, stirring, heating up to 120° C., slowly press in about 44 grams of ethylene oxide, and then continue the reaction for two hours. Cool down to get the product. NMR 13 The analysis results of C showed that the peaks with chemical shifts of 67-72 were the formed ether bonds.

Embodiment 2

[0049] This example was used to prepare 3-methyl-6-polyoxyethylene-quinoline.

[0050] Add 19.2g of 3-methyl-6-hydroxyquinoline (chemical reagent, TCI (Shanghai) Chemical Industry Development Co., Ltd.), catalyst (sodium hydroxide, 0.1 g) into the reactor, close the reactor, and replace with nitrogen Air in the kettle, stirring, heating up to 120°C, slowly press in about 27 grams of ethylene oxide, and then continue the reaction for two hours. Cool down to get the product. NMR 13 The analysis results of C showed that the peaks with chemical shifts of 67-72 were the formed ether bonds.

Embodiment 3

[0052] This example was used to prepare 4-methyl-7-polyoxyethylene-quinoline.

[0053] Add 19.2g of 4-methyl-7-hydroxyquinoline (chemical reagent, TCI (Shanghai) Chemical Industry Development Co., Ltd.), catalyst (sodium hydroxide, 0.1 g) into the reactor, close the reactor, and replace with nitrogen Air in the kettle, stirring, heating up to 120°C, slowly press in about 88 grams of ethylene oxide, and then continue the reaction for two hours. Cool down to get the product. NMR 13 The analysis results of C showed that the peaks with chemical shifts of 67-72 were the formed ether bonds.

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Abstract

The invention discloses a quinoline deviate as shown in a formula I in the specification, wherein R1 in the formula I is hydrogen or alkyl; A is -(CH2CH2O)n-CH2CH3, and n is an integer more than 1. The invention further provides a preparation method of the quinoline deviate, application of the quinoline deviate as a corrosion and scale inhibitor, as well as a composition containing the quinoline deviate. The quinoline deviate under a relatively low use amount shows outstanding corrosion and scale inhibition performance for a high-salinity and high-chlorine oilfield reinjection water system, and has an outstanding corrosion and scale inhibition effect on a water injection shaft under high temperature and high pressure conditions.

Description

technical field [0001] The invention relates to a quinoline derivative, a preparation method and application thereof, and a corrosion and scale inhibitor composition containing the quinoline derivative. Background technique [0002] At present, most oil fields in my country have entered the middle and late stage of development, and water injection is widely used for oil production. In the case of severe shortage of water resources, the reinjection of oil production sewage not only solves the problem of water shortage, but also solves the environmental pollution caused by the discharge of oil production sewage. problem; however, oil production wastewater contains a large number of microorganisms, Ca 2+ , Mg 2+ , Cl - , SO 4 2- Corrosion and scaling ions can easily cause corrosion and scaling of facilities, especially under high temperature and high pressure conditions in the wellbore. Reduce the permeability of oil layers, seriously affecting the production and developmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D215/14C09K8/54C09K8/52C08G65/28
CPCC07D215/14C08G65/263C09K8/52C09K8/54C09K2208/32
Inventor 王秀
Owner CHINA PETROLEUM & CHEM CORP
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