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Preparation method of aminated lignin drilling fluid treating agent

A drilling fluid treatment agent, the technology of aminated lignin, applied in the directions of lignin derivatives, chemical instruments and methods, drilling compositions, etc., can solve the problems of inability to show, environmental pollution of the treatment agent, etc.

Inactive Publication Date: 2010-10-13
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, lignosulfonate used in drilling fluids is often used as a diluent, but when lignosulfonate is used alone, it cannot show ideal dilution and fluid loss reduction performance, so iron lignosulfonate, However, the introduction of transition metal ions, especially heavy metal ions, will lead to the pollution of the treatment agent to the environment, so it is necessary to further study the non-polluting and environmentally friendly lignin drilling fluid treatment agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A preparation method of an aminated lignin drilling fluid treatment agent, comprising the following steps:

[0017] In the first step, the industrial lignin is dissolved in a container filled with 20 times the quality of water, and the industrial lignin is calcium lignosulfonate produced by the sulfite papermaking method of a papermaking enterprise,

[0018] In the second step, 10% acetic acid solution is added dropwise to the above solution to adjust the pH value to 5, and the acetic acid solution is a chemically pure reagent;

[0019] The third step is to add formaldehyde series to the container under agitation. The mass ratio of the amount of formaldehyde in the formaldehyde series to industrial lignin is 1:7. The formaldehyde series is formaldehyde, and formaldehyde is a 35% chemically pure aqueous solution. ;

[0020] The fourth step is to add amine to the reactant of the third step under stirring condition, the amine is dimethylamine, and dimethylamine is a 33% c...

Embodiment 2

[0025] A preparation method of an aminated lignin drilling fluid treatment agent, comprising the following steps:

[0026] The first step, industrial lignin is dissolved in the container that fills the water of 30 times of quality, and described industrial lignin is the calcium lignosulfonate that papermaking enterprise sulfite papermaking method produces;

[0027] In the second step, 10% acetic acid solution is added dropwise to the above solution to adjust the pH value to 5, and the acetic acid solution is a chemically pure reagent;

[0028] The third step is to add formaldehyde series to the container under agitation. The mass ratio of the amount of formaldehyde in the formaldehyde series to industrial lignin is 1:8, and the formaldehyde series is hexamethylenetetramine, hexamethylene Base tetramine is a chemically pure reagent;

[0029] The fourth step is to add amine to the reactant of the third step under stirring condition, the amine is dimethylamine, and dimethylamine...

Embodiment 3

[0034] A preparation method of an aminated lignin drilling fluid treatment agent, comprising the following steps:

[0035] In the first step, industrial lignin is dissolved in a container filled with 30 times the quality of water, and the industrial lignin is sodium lignosulfonate produced by papermaking enterprise sulfite papermaking method;

[0036] In the second step, 10% acetic acid solution is added dropwise to the above solution to adjust the pH value to 6, and the acetic acid solution is a chemically pure reagent;

[0037] The third step is to add formaldehyde series to the container under agitation. The mass ratio of the amount of formaldehyde in the formaldehyde series to industrial lignin is 1:8. The formaldehyde series is paraformaldehyde, and paraformaldehyde is chemically pure Reagent;

[0038] The 4th step, add amine to the reactant of the 3rd step under stirring condition, amine is diethylamine, and diethylamine is chemical pure reagent, and the ratio of the am...

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PUM

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Abstract

The invention relates to a preparation method of an aminated lignin drilling fluid treating agent, which comprises the steps of firstly dissolving industrial lignin in water, then dripping an acetic acid solution, regulating pH value, adding methanal serial materials under a stirring condition, then adding amine under the stirring condition, heating for backflow under the stirring condition to obtain the water solution of aminated lignin, finally drying the water solution of the aminated lignin by distillation and crashing to obtain brown granular solid aminated lignin which can be used as the drilling fluid treating agent. The obtained aminated lignin used as the drilling fluid treating agent can improve the fluid loss and viscosity reduction effects, has the advantage of small pollutionbecause the raw material is a natural non-toxic product which is easy to degrade and polluting metal ions are not introduced, and can be applied in the preparation field of the drilling fluid treating agent.

Description

technical field [0001] The invention relates to the technical field of preparation of a lignin drilling fluid treatment agent, in particular to a preparation method of an aminated lignin drilling fluid treatment agent. Background technique [0002] Water-based drilling fluids used in the oil field drilling process require a large amount of water-soluble polymer treatment agents, and the polymers used should have polar adsorption groups and hydration groups, and the adsorption groups are generated on the surface of clay particles. Adsorption and hydration groups produce hydration on the adsorption site of the polymer on the clay surface. These two groups work together to form an adsorption hydration film on the surface of clay particles. The performance of the adsorption hydration film directly affects the drilling fluid. The aggregation or dispersion stability of clay particles, and the performance of the adsorption hydration film is largely affected by the types and quantit...

Claims

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Application Information

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IPC IPC(8): C09K8/035C07G1/00
Inventor 陈刚张洁
Owner XI'AN PETROLEUM UNIVERSITY
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