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A kind of iron ion stabilizer for multifunctional acidification and preparation method thereof

An iron ion stabilizer and multi-functional technology, applied in chemical instruments and methods, drilling compositions, etc., can solve problems such as unreported multi-functional products, improve the accuracy of liquid dispensing, and simplify the liquid dispensing process. , the effect of reducing the waste of additives

Active Publication Date: 2019-11-15
陕西庆华石油建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are many foreign reports on the control of iron precipitation in acidification. The main performance of the product is to stabilize iron ions, and there are no reports on multi-functional products.

Method used

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  • A kind of iron ion stabilizer for multifunctional acidification and preparation method thereof
  • A kind of iron ion stabilizer for multifunctional acidification and preparation method thereof
  • A kind of iron ion stabilizer for multifunctional acidification and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the multifunctional acidification iron ion stabilizer of the present embodiment comprises the following steps:

[0023] Step 1, placing 37g of industrial hydrochloric acid with a mass concentration of 30% in a reaction vessel with a reflux condenser, opening the reflux condenser to condense the industrial hydrochloric acid, and under stirring conditions at a temperature of 15°C, to the 8g of industrial hydrazine hydrate with a mass concentration of 40% was added dropwise to the reaction vessel for 30 minutes, and after stirring and reacting for 30 minutes, 48g of water was added to the reactor and stirred evenly to obtain solution A;

[0024] Step 2, industrial citric acid, emulsifier OP-10 and Virahol are dissolved in water to obtain solution B; the mass concentration of citric acid in the solution B is 5%, and the mass concentration of emulsifier OP-10 is 20% , the mass concentration of isopropanol is 15%;

[0025] Step 3. At room temperatur...

Embodiment 2

[0027] The preparation method of the multifunctional acidification iron ion stabilizer of the present embodiment comprises the following steps:

[0028] Step 1, 50g mass concentration is that the industrial hydrochloric acid of 30% is placed in the reaction vessel that has reflux condenser, open reflux condenser and described industrial hydrochloric acid is condensed, under the stirring condition that temperature is 10 ℃, to described 15g of industrial hydrazine hydrate with a mass concentration of 40% was added dropwise to the reaction vessel for 40 minutes, stirred and reacted for 60 minutes, and then 72g of water was added to the reactor, and stirred evenly to obtain solution A;

[0029] Step 2, industrial citric acid, emulsifier OP-10 and Virahol are dissolved in water to obtain solution B; the mass concentration of citric acid in the solution B is 10%, and the mass concentration of emulsifier OP-10 is 10% , the mass concentration of isopropanol is 25%;

[0030] Step 3. A...

Embodiment 3

[0032] The preparation method of the multifunctional acidification iron ion stabilizer of the present embodiment comprises the following steps:

[0033] Step 1, placing 48g of industrial hydrochloric acid with a mass concentration of 31% in a reaction vessel with a reflux condenser, opening the reflux condenser to condense the industrial hydrochloric acid, and under stirring conditions at a temperature of 20°C, to the 12g of industrial hydrazine hydrate with a mass concentration of 40% was added dropwise to the reaction vessel, and the dropping time was 35min. After stirring and reacting for 20min, 60g of water was added to the reactor, and the mixture was evenly stirred to obtain solution A;

[0034] Step 2, industrial citric acid, emulsifier OP-10 and Virahol are dissolved in water to obtain solution B; the mass concentration of citric acid in the solution B is 8%, and the mass concentration of emulsifier OP-10 is 15% , the mass concentration of isopropanol is 20%;

[0035]...

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Abstract

The invention discloses a multifunctional iron ion stabilizer for acidification and a preparation method thereof. The preparation method comprises: 1. placing industrial hydrochloric acid in a reaction vessel with a reflux condenser, and turning on the reflux condenser to carry out the industrial hydrochloric acid Condensate, under the condition of stirring at a temperature of 10°C to 20°C, add industrial hydrazine hydrate dropwise to the reaction vessel, stir and react for 20min to 60min, then add water to the reactor, stir evenly to obtain solution A; 1. Dissolve citric acid, emulsifier OP‑10 and isopropanol in water to obtain solution B; 3. At room temperature, mix solution A and solution B uniformly according to the mass ratio of 1: (1~1.5) to obtain poly Iron ion stabilizer for functional acidification. The method of the invention is simple, does not require special equipment and special process conditions, and the prepared multifunctional iron ion stabilizer for acidification not only has an efficient iron stabilizing effect, but also has the effect of a drainage aid.

Description

technical field [0001] The invention belongs to the technical field of acidizing construction in oil and gas fields, and in particular relates to a multifunctional iron ion stabilizer for acidizing and a preparation method thereof. Background technique [0002] Acidizing is one of the main means of increasing production of oil and gas wells and water injection wells. It uses acid liquid to remove pollution near the bottom of production wells and water injection wells, remove clogging substances in pores or fractures, or improve the original pores and fractures in the formation to improve Formation permeability, so as to achieve the purpose of increasing production and injection. [0003] In oil and gas field acidizing construction, high-concentration acid solution will dissolve iron compounds in equipment and tubing during the process of stirring acid solution and pumping. Although a certain amount of corrosion inhibitor is added, the corrosion of the pipe wall and the disso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/74
CPCC09K8/604C09K8/725C09K8/74
Inventor 王满学陈丹玉
Owner 陕西庆华石油建设有限公司
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