A kind of clay stabilizer and preparation method thereof of water sensitive damage

A technology of clay stabilizer and surfactant, which is applied in the field of waterproof and sensitive clay stabilizer and its preparation, which can solve the problems of cracking catalyst deactivation, etc., and achieve the effect of high anti-swelling rate, simple synthesis process, and not easy to decompose

Active Publication Date: 2021-11-05
东营利丰化工新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this invention uses a large amount of chlorine-containing organic compounds, which have strong toxicity, and if the extracted crude oil contains chlorine, it will easily cause the deactivation of the cracking catalyst in the later stage

Method used

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  • A kind of clay stabilizer and preparation method thereof of water sensitive damage
  • A kind of clay stabilizer and preparation method thereof of water sensitive damage
  • A kind of clay stabilizer and preparation method thereof of water sensitive damage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Clay Stabilizer D 1 and its preparation method

[0032] (1) Clay Stabilizer D 1 The composition and components are as follows:

[0033]

[0034] According to existing literature, the synthetic route of described soybean oil modified surfactant is as follows:

[0035]

[0036] Where: R" is C n h 2n+1 , 0≤n≤15; R' is C m h 2m+1 , 0≤m≤15.

[0037] (2) Clay Stabilizer D 1 The preparation method is as follows:

[0038] ①Put 20 parts of water into the beaker, heat the beaker in a constant temperature water bath at 60°C, add 0.2 parts of acetylacetone at a stirring rate of 200 rpm, and continue stirring for 15 minutes to obtain a mixed solution;

[0039] ② Adjust the temperature of the above mixed solution to 28°C. After the temperature is constant, slowly add 0.01 part of calcium hydroxide at a stirring rate of 500rpm. After adding it completely, continue stirring for 20 minutes, then raise the temperature to 60°C, and keep the temperature constant ...

Embodiment 2

[0041] Example 2: Clay Stabilizer D 2 and its preparation method

[0042] (1) Clay Stabilizer D 2 The composition and components are as follows:

[0043]

[0044] According to existing literature, the synthetic route of described soybean oil modified surfactant is as follows:

[0045]

[0046] Where: R" is C n h 2n+1 , 0≤n≤15; R' is C m h 2m+1 , 0≤m≤15.

[0047] (2) Clay Stabilizer D 2 The preparation method is as follows:

[0048] ①Put 45 parts of water into the beaker, heat the beaker in a constant temperature water bath at 65°C, add 1.5 parts of acetylacetone at a stirring rate of 300 rpm, and continue stirring for 20 minutes to obtain a mixed solution;

[0049] ② Adjust the temperature of the above mixed solution to 32°C. After the temperature is constant, slowly add 0.05 parts of calcium hydroxide at a stirring rate of 530rpm. After adding it completely, continue stirring for 25 minutes, then raise the temperature to 75°C, and keep the temperature constant f...

Embodiment 3

[0051] Example 3: Clay Stabilizer D 3 and its preparation method

[0052] (1) Clay Stabilizer D 3 The composition and components are as follows:

[0053]

[0054] According to existing literature, the synthetic route of described soybean oil modified surfactant is as follows:

[0055]

[0056] Where: R" is C n h 2n+1 , 0≤n≤15; R' is C m h 2m+1 , 0≤m≤15.

[0057] (2) Clay Stabilizer D 3 The preparation method is as follows:

[0058] ①Put 80 parts of water into the beaker, heat the beaker in a constant temperature water bath at 70°C, add 2.0 parts of acetylacetone at a stirring rate of 220rpm, and continue stirring for 25 minutes to obtain a mixed solution;

[0059] ② Adjust the temperature of the above mixed solution to 25°C. After the temperature is constant, slowly add 0.02 parts of calcium hydroxide at a stirring rate of 550rpm. After adding it completely, continue stirring for 20 minutes, then raise the temperature to 65°C, and keep the temperature constant ...

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Abstract

The invention belongs to the technical field of oil field development, and in particular relates to a clay stabilizer for water-sensitive damage and a preparation method thereof. The anti-swelling clay stabilizer is composed of soybean oil modified surfactant, acetylacetone, calcium hydroxide and water Compounded, wherein the soybean oil modified surfactant is a quaternary ammonium salt surfactant with a long carbon chain alkyl group and a quaternary ammonium cation. The anti-swelling clay stabilizer of the present invention has the characteristics of wide source of raw materials, simple synthesis process, and strong adaptability to oil reservoirs; at the same time, it has good heat and salt resistance, can withstand temperatures up to 300°C, and has a mineralization resistance of 200,000 mg / L; and Formation water has good compatibility, high anti-swelling rate, and the anti-swelling rate reaches more than 98.0%. Therefore, the present invention can be widely applied to the technical field of oil field exploitation.

Description

technical field [0001] The invention belongs to the technical field of oilfield exploitation, and in particular relates to a clay stabilizer capable of preventing sensitive damage and a preparation method thereof. Background technique [0002] Clay minerals widely exist in oil layers, and when the oil reservoir contains 5-20% clay, it is considered to be an oil layer with higher clay content. If improper measures are taken during the development of such oil layers, clay minerals will expand, disperse and migrate, leading to a decrease in permeability and formation damage. During the swelling process, the clay absorbs water into the crystal structure, resulting in an increase in the volume of the clay, thereby blocking the formation pores; during the migration process, the clay material is dispersed by the foreign liquid, or carried by the production fluid, in the pores of the capillary A bridging or choke point is formed at the throat, which then leads to a decrease in form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/03C09K8/60C09K8/575
CPCC09K8/03C09K8/575C09K8/602C09K8/607C09K2208/12
Inventor 张静
Owner 东营利丰化工新材料有限公司
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