Anti-swelling clay stabilizing agent, and preparation method thereof

A clay stabilizer and stabilizer technology, which is applied in the field of anti-swelling clay stabilizer and its preparation, and achieves the effects of wide application range, simple usage and low price

Inactive Publication Date: 2018-09-14
YANTAI ZHIBEN INTPROP OPERATIONS MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most clay stabilizers can no longer meet the needs of high temperature, high salinity, and heterogeneous reservoir development. Therefore, the development of new temperature-resistant and salt-resistant clay stabilizers that meet the needs of oil and gas production has become an urgent task in this field.

Method used

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  • Anti-swelling clay stabilizing agent, and preparation method thereof
  • Anti-swelling clay stabilizing agent, and preparation method thereof
  • Anti-swelling clay stabilizing agent, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) 90 parts of water and 0.8 parts of potassium stearate were placed in a beaker, and heated in a constant temperature water bath at 40°C; stirred for 30 minutes at a stirring rate of 100 rpm to obtain a mixed solution;

[0023] (2) Then slowly add 0.06 parts of ammonium nitrate, after complete addition, stir for 20 minutes at a stirring rate of 200 rpm; then raise the temperature to 50°C and keep the temperature constant for 50 minutes to obtain a transparent solution;

[0024] (3) Finally, 10 parts of biosurfactant were added, stirred at a stirring rate of 500 rpm and a temperature of 55° C. for 30 min, and then naturally cooled to room temperature to obtain the final product, namely the anti-swelling clay stabilizer of the present invention.

Embodiment 2

[0026] (1) 95 parts of water and 1.0 part of potassium stearate were placed in a beaker, and heated in a constant temperature water bath at 45° C.; stirred for 35 minutes at a stirring rate of 120 rpm to obtain a mixed solution;

[0027] (2) Then slowly add 0.1 part of ammonium nitrate, after complete addition, stir for 26min at a stirring rate of 300rpm; then raise the temperature to 52°C and keep the temperature constant for 55min to obtain a transparent solution;

[0028] (3) Finally, 10 parts of biosurfactant were added, stirred at a stirring rate of 550 rpm and a temperature of 58° C. for 40 min, and then naturally cooled to room temperature to obtain the final product, namely the anti-swelling clay stabilizer of the present invention.

Embodiment 3

[0030] (1) 100 parts of water and 0.5 parts of potassium stearate were placed in a beaker, and heated in a constant temperature water bath at 50°C; stirred for 40 minutes at a stirring rate of 200 rpm to obtain a mixed solution;

[0031] (2) Then slowly add 0.05 parts of ammonium nitrate, after complete addition, stir for 30 minutes at a stirring rate of 250 rpm; then raise the temperature to 55°C and keep the temperature constant for 60 minutes to obtain a transparent solution;

[0032] (3) Finally, 10 parts of biosurfactant were added, stirred at a stirring rate of 600 rpm and a temperature of 60° C. for 50 min, and then naturally cooled to room temperature to obtain the final product, namely the anti-swelling clay stabilizer of the present invention.

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Abstract

The invention belongs to the technical field of oil field exploitation, and more specifically relates to an anti-swelling clay stabilizing agent, and a preparation method thereof. The anti-swelling clay stabilizing agent is composed of a biosurfactant, potassium stearate, ammonium nitrate, and water; wherein the biosurfactant is one selected from sophorolipid and rhamnolipid. The anti-swelling clay stabilizing agent is excellent in temperature resistance and salt resistance, wide in application range, long in effect lasting period, simple in using, small in using amount, low in cost, and simple in preparation technology, and can be widely used in the field of oil field exploitation technology.

Description

technical field [0001] The invention belongs to the technical field of oilfield exploitation, and in particular relates to an anti-swelling clay stabilizer and a preparation method thereof. Background technique [0002] At present, my country's oil production is mostly developed by water flooding. The clay minerals in the formation will expand and disperse when they encounter water-based substances during the oilfield production process, resulting in a decrease in the permeability of the reservoir and damage to the oil and gas reservoir. In order to protect the permeability of oil and gas layers, clay stabilizers are added to various water-based working fluids, which can effectively inhibit the damage of clay to oil and gas layers. The cations electrolyzed by the clay stabilizer in the water-based material can be adsorbed on the surface of clay particles through electrostatic action to reduce the negative charge of clay particles, and can also be wrapped on the surface of cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/03
CPCC09K8/03C09K2208/12
Inventor 王敏
Owner YANTAI ZHIBEN INTPROP OPERATIONS MANAGEMENT CO LTD
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