Mud acid cross-linking agent and preparation method thereof

A kind of technology of crosslinking agent and earth acid, applied in the field of earth acid crosslinking agent and preparation thereof

Active Publication Date: 2014-09-10
张春雨
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For earth acid, there is no suitable cross-linking agent at present, so that the polymer solution dissolved in earth acid can be cross-linked into jelly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] An earth acid crosslinking agent, which is made of the following raw materials in parts by weight: 1000 parts of 3-pyrrolidinol, 400 parts of glyoxal, 330 parts of water-soluble phenolic resin, 1000 parts of ethanol, water 1000 parts; described water-soluble phenolic resin comprises 94 parts of phenol, 9.2 parts of catalyzers and concentration are 225 parts of formaldehyde aqueous solution of 40%, and described catalyzer is sodium hydroxide; Its preparation method comprises the steps:

[0033] 1. Place 94 parts of phenol in a reaction kettle and heat it to 50°C to melt it into a phenol liquid;

[0034] 2. Add 6.4 parts of catalyst to the phenol liquid described in step 1, and maintain the reaction temperature at 50°C, and stir for 20 minutes;

[0035] 3. Pour 180 parts of formaldehyde solution with a concentration of 40% into the catalyst-added phenol solution described in step 2, heat up to 60° C., and continue stirring for 50 minutes;

[0036] 4. Add 2.8 parts of cat...

Embodiment 2

[0041] An earth acid crosslinking agent, which is made of the following raw materials in parts by weight: 1000 parts of 3-pyrrolidinol, 500 parts of glyoxal, 330 parts of water-soluble phenolic resin, 1000 parts of ethanol, water 1000 parts; described water-soluble phenolic resin comprises 94 parts of phenol, 9.2 parts of catalyzers and concentration are 225 parts of formaldehyde aqueous solution of 40%, and described catalyzer is potassium hydroxide; Its preparation method comprises the steps:

[0042] 1. Place 94 parts of phenol in a reaction kettle and heat it to 50°C to melt it into a phenol liquid;

[0043] 2. Add 6.4 parts of catalyst to the phenol liquid described in step 1, and maintain the reaction temperature at 50°C, and stir for 20 minutes;

[0044] 3. Pour 180 parts of formaldehyde solution with a concentration of 40% into the catalyst-added phenol solution described in step 2, heat up to 60° C., and continue stirring for 50 minutes;

[0045] 4. Add 2.8 parts of ca...

Embodiment 3

[0050] An earth acid crosslinking agent, which is made of the following raw materials in parts by weight: 1000 parts of 3-pyrrolidinol, 600 parts of glyoxal, 330 parts of water-soluble phenolic resin, 1000 parts of ethanol, water 1000 parts; described water-soluble phenolic resin comprises 94 parts of phenol, 9.2 parts of catalyzers and concentration are 225 parts of formaldehyde aqueous solution of 40%, and described catalyzer is potassium hydroxide; Its preparation method comprises the steps:

[0051] 1. Place 94 parts of phenol in a reaction kettle and heat it to 50°C to melt it into a phenol liquid;

[0052] 2. Add 6.4 parts of catalyst to the phenol liquid described in step 1, and maintain the reaction temperature at 50°C, and stir for 20 minutes;

[0053] 3. Pour 180 parts of formaldehyde aqueous solution with a concentration of 40% into the phenol solution added with the catalyst described in step 2, heat up to 60° C., and continue stirring for 50 minutes;

[0054] 4. ...

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PUM

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Abstract

The invention belongs to the technical field of oil and gas exploitation, and specifically relates to a mud acid cross-linking agent and a preparation method thereof. The mud acid cross-linking agent is prepared from the following materials in parts by weight: 1000 parts of 3-pyrrolidinol, 400-600 parts of glyoxal, 330 parts of water-soluble phenolic resin, 1000 parts of alcohol and 1000 parts of water, wherein the water-soluble phenolic resin comprises 94 parts of phenol, 9.2 parts of catalyst and 225 parts of formaldehyde aqueous liquor with concentration of 40%l and the catalyst is one of sodium hydroxide or potassium hydroxide. The mud acid cross-linking agent disclosed by the invention is strong in adaptive capacity and is capable of lowering acid liquor reaction speed and improving effective acting distance of the acid liquor.

Description

technical field [0001] The invention belongs to the technical field of oil and gas development, and in particular relates to an earth acid crosslinking agent and a preparation method thereof. Background technique [0002] As my country's onshore oil and gas exploitation gradually enters the stage of highly mature exploration, the exploration and exploitation of lithologic oil and gas reservoirs are becoming more and more obvious. According to statistics, the total amount of remaining petroleum geological resources in my country's main onshore oil and gas-bearing basins is 17.92 billion tons, and 9.13 billion tons of lithologic strata, accounting for 51% of the total petroleum geological resources. However, the lithology is composed of sand grains and intergranular cements. The sand grains are mainly quartz and feldspar, and the cements are mainly silicates and carbonates. Fracturing stimulation with ordinary hydrochloric acid often fails to achieve the expected results. For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/74
CPCC09K8/74C09K8/887
Inventor 张玄张义勤宋峰
Owner 张春雨
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