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Biomass synthetic resin filtrate reducer, preparation method thereof and water-based drilling fluid filtrate reducer

A technology for synthetic resins and fluid loss reducers, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of poor biodegradability, poor degradability, application limitations, etc., and achieve excellent salt resistance, Low cost, low price effect

Inactive Publication Date: 2021-01-12
中石化石油工程技术服务有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the severe environmental protection situation, the product has the following problems: (1) Poor degradability
The raw materials for sulfonated phenolic resin are mainly formaldehyde and phenol, and the structure contains benzene rings. Although the product itself is non-toxic, its biodegradability is poor. In some areas with relatively high environmental protection requirements, the application of sulfonated phenolic resin Has been restricted; (2) Residual phenol has certain toxicity
Residual phenol and oligomeric phenol in the production process of phenolic resin have certain toxicity (phenol has been included in the national list of hazardous chemicals), although many means and measures have been taken, it is still difficult to completely remove it

Method used

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  • Biomass synthetic resin filtrate reducer, preparation method thereof and water-based drilling fluid filtrate reducer
  • Biomass synthetic resin filtrate reducer, preparation method thereof and water-based drilling fluid filtrate reducer
  • Biomass synthetic resin filtrate reducer, preparation method thereof and water-based drilling fluid filtrate reducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In parts by weight, in a four-port reactor with a reflux device, add 80 parts of furfuryl alcohol, 1 part of water, and 100 parts of furfural successively, stir for 10 minutes, and have a stirring speed of 250 rpm to obtain a mixture 1; keep the stirring speed at 250 rpm without Change, add 25 parts of sodium metabisulfite to mixture 1 in 5 times, each addition is 5 parts, and stir for 10 minutes to obtain mixture 2; add 40 parts of anhydrous sodium sulfite to mixture 2 in 4 times, each addition For 10 parts, stir for 10 minutes to obtain mixture 3; raise the temperature to 60°C, react for 30 minutes, then adjust the temperature of the reactor, raise the temperature to 95°C, and react for 20 minutes to obtain mixture 4; add 3 parts of Water, water was added 4 times in total, and then the reaction was continued for 60 minutes to discharge the material to obtain a biomass synthetic resin fluid loss control agent.

[0056] The biomass synthetic resin fluid loss reducer pre...

Embodiment 2

[0058] In parts by weight, in a four-port reactor with a reflux device, add 90 parts of furfuryl alcohol, 1 part of water, and 150 parts of furfural successively, stir for 10 minutes, and stir at a speed of 300 rpm to obtain a mixture 1; keep the stirring speed at 300 rpm without Change, add 40 parts of sodium metabisulfite to mixture 1 in 4 times, each addition is 10 parts, and stir for 10 minutes to obtain mixture 2; add 60 parts of anhydrous sodium sulfite to mixture 2 in 5 times, each addition For 12 parts, stir for 10 minutes to obtain mixture 3; raise the temperature to 70°C, react for 30 minutes, then adjust the temperature of the reactor, raise the temperature to 105°C, and react for 30 minutes to obtain mixture 4; add 3 parts of Water, water was added 4 times in total, and then the reaction was continued for 90 minutes to discharge the material to obtain a biomass synthetic resin fluid loss control agent.

Embodiment 3

[0060] In parts by weight, in a four-port reaction kettle with a reflux device, add 95 parts of furfuryl alcohol, 1 part of water, and 180 parts of furfural successively, stir for 20 minutes, and have a stirring speed of 250 rpm to obtain a mixture 1; keep a stirring speed of 250 rpm without Change, add 60 parts of sodium metabisulfite to mixture 1 in 5 times, each addition is 12 parts, stir for 20 minutes, to obtain mixture 2; add 40 parts of anhydrous sodium sulfite to mixture 2 in 4 times, each addition 10 parts, stirred for 20 minutes to obtain mixture 3; raise the temperature to 65°C, react for 30 minutes, then adjust the temperature of the reactor, raise the temperature to 100°C, and react for 30 minutes to obtain mixture 4; add 3 parts of Water, water was added 4 times in total, and then the reaction was continued for 90 minutes to discharge the material to obtain a biomass synthetic resin fluid loss control agent.

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Abstract

The invention provides a biomass synthetic resin filtrate reducer which has a structure shown in a formula I. In the formula I, n is an integer ranging from 15 to 22. The invention provides a preparation method of the biomass synthetic resin filtrate reducer; the preparation method comprises the following step: mixing furfuryl alcohol, furfural, sodium pyrosulfite, anhydrous sodium sulfite and water to obtain the biomass synthetic resin filtrate reducer. The product provided by the invention is relatively good in filtrate loss reduction performance, relatively strong in salt resistance and biodegradable; the preparation method of the biomass synthetic resin filtrate reducer is environment-friendly, mild, simple and low in application cost.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling fluid additives, in particular to a biomass synthetic resin fluid loss reducer, a preparation method thereof and a water-based drilling fluid fluid loss reducer. Background technique [0002] Filtrate reducer is one of the important treatment agents for drilling fluid, which plays an important role in stabilizing the wellbore wall and protecting oil and gas layers. With the continuous development of the petroleum industry, the increasingly complex strata and the high-temperature environment in the deep formations of deep wells and ultra-deep wells, the petroleum industry has higher and higher requirements for fluid loss control agents. The molecular chains of natural products are mostly rigid long chains and come from a wide range of sources. However, it is not resistant to high temperature, and the fluid loss control agent with temperature resistance, salt resistance and biodegradabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G16/04C08G16/02C09K8/035
CPCC08G16/0262C08G16/04C09K8/035
Inventor 周启成单海霞位华周亚贤张弌侯树刚
Owner 中石化石油工程技术服务有限公司
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