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Corrosion and scale inhibitor for oil and gas gathering and transportation and preparation method of corrosion and scale inhibitor

A corrosion and scale inhibitor, oil and gas gathering and transportation technology, applied in the field of corrosion and scale inhibitors, can solve the problems of poor scale and corrosion inhibition effects, and achieve the reduction of calcium phosphate deposition, environmental friendliness, and scale inhibition effect significant effect

Pending Publication Date: 2022-02-25
TIANJIN XINXIANG PETROLEUM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corrosion inhibitors can only solve the corrosion problem, and the scale inhibition effect is poor. Scale inhibitors can only solve the scaling problem, and the corrosion inhibition effect is poor

Method used

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  • Corrosion and scale inhibitor for oil and gas gathering and transportation and preparation method of corrosion and scale inhibitor
  • Corrosion and scale inhibitor for oil and gas gathering and transportation and preparation method of corrosion and scale inhibitor
  • Corrosion and scale inhibitor for oil and gas gathering and transportation and preparation method of corrosion and scale inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This example provides a corrosion and scale inhibitor for oil and gas gathering and transportation. The corrosion and scale inhibitor is composed of component A, which is prepared from the following raw materials: 0.1mol oleic acid, 0.15mol diethylenetriamine, 0.11mol EDTA, 0.102mol benzyl chloride.

[0032] The preparation method of A component comprises the steps:

[0033] Add 0.1mol oleic acid into the three-necked flask, start heating the three-necked flask with a heating mantle, and stir while heating until the oleic acid is completely dissolved;

[0034] After continuing to heat up to 160°C, slowly add 0.15mol of diethylenetriamine dropwise, and react at 160°C for 2 hours;

[0035] Then add 40ml of xylene and heat up to 220°C, use a water separator to continuously remove the water until no xylene and water are evaporated, and carry out the cyclization reaction at 220°C for 2 hours to obtain the first intermediate product;

[0036] Cool the first intermediate pro...

Embodiment 2

[0043] This example provides a corrosion and scale inhibitor for oil and gas gathering and transportation, the corrosion and scale inhibitor is composed of A component and B component, and the weight ratio of A component and B component is: 9:1; wherein, The raw material composition and preparation method of component A are the same as those in Example 1, and will not be repeated here.

[0044] Component B includes the following parts by weight:

[0045] 10 parts of sodium ethylenediamine tetramethylene phosphonate;

[0046] 25 parts of zinc chloride;

[0047] 65 parts of deionized water.

[0048] The preparation method of component B is as follows: uniformly mix a certain proportion of sodium ethylenediamine tetramethylene phosphonate, zinc chloride and deionized water.

[0049] When using, mix component A and component B according to 9:1.

Embodiment 3

[0051] This example provides a corrosion and scale inhibitor for oil and gas gathering and transportation, the corrosion and scale inhibitor is composed of A component and B component, and the weight ratio of A component and B component is: 8:2; wherein, The raw material composition and preparation method of component A are the same as those in Example 1, and will not be repeated here.

[0052] Component B includes the following parts by weight:

[0053] 15 parts of sodium ethylenediamine tetramethylene phosphonate;

[0054] 20 parts of zinc sulfate;

[0055] 65 parts of deionized water.

[0056] The preparation method of component B is as follows: uniformly mix a certain proportion of sodium ethylenediamine tetramethylene phosphonate, zinc sulfate and deionized water.

[0057] When using, mix component A and component B according to 8:2.

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Abstract

The invention provides a corrosion and scale inhibitor for oil and gas gathering and transportation and a preparation method of the corrosion and scale inhibitor. The corrosion and scale inhibitor for oil and gas gathering and transportation is composed of a component A and a component B, wherein the weight ratio of the component A to the component B is (6-10): (4-0); the component A comprises the following components in parts by mole: 1 part of fatty acid, 1.0 to 1.5 parts of EDTA, 1.1 to 2.0 parts of diethylenetriamine, and 0.8 to 1.5 parts of benzyl chloride; and the component B comprises the following components in parts by weight: 10 to 20 parts of an organic phosphine compound, 15 to 25 parts of zinc salt, and 55 to 75 parts of deionized water. The corrosion and scale inhibitor for oil and gas gathering and transportation has good corrosion and scale inhibition effects on the one hand, is low in phosphorus on the other hand, can reduce deposition of calcium phosphate, and is environment-friendly.

Description

technical field [0001] The present application relates to the technical field of corrosion and scale inhibitors, in particular to a corrosion and scale inhibitor for oil and gas gathering and transportation and a preparation method thereof. Background technique [0002] Oil and gas gathering and transportation are inseparable from corrosion inhibitors and scale inhibitors. In the prior art, imidazoline corrosion inhibitors and their derivatives are the most used organic corrosion inhibitors in various oil fields. The scale inhibitors mainly include organic phosphine series, organic phosphonate scale inhibitors, polycarboxylate scale inhibitors and dispersants, composite scale inhibitors, etc. Corrosion inhibitors can only solve the corrosion problem, and the scale inhibition effect is poor. Therefore, the present invention proposes a corrosion and scale inhibitor for oil and gas gathering and transportation aiming at the problem that scaling and corrosion cannot be solved s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/08C23F15/00
CPCC23F11/08C23F15/005
Inventor 郑建超吴丹
Owner TIANJIN XINXIANG PETROLEUM TECH CO LTD
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