Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of water-base organic silicon de-foaming agent special for drilling fluid

A silicone defoamer and drilling mud technology, which is applied in the direction of drilling compositions, chemical instruments and methods, can solve the problems of easy oil floating or demulsification, poor stability and defoaming persistence, dilution stability and Poor defoaming persistence and other problems, to achieve the effect of not easy to float oil or demulsification, good defoaming persistence, simple preparation process

Inactive Publication Date: 2017-06-13
汪逸凡
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in view of the problem that the traditional defoamer used in drilling mud has poor dilution stability and defoaming persistence, oil floating or demulsification is easy to occur during use, and the defoamer needs to be added repeatedly. A method for preparing a special organosilicon defoamer for drilling mud by compounding and mixing modified hollow porous silica prepared from wollastonite with dimethyl silicone oil, etc.
The present invention uses self-made modified hollow porous silica as hydrophobic particles, and the specific surface area of ​​the obtained silica can reach 550-650m 2 / g, in the process of use, it can help the dispersibility of silicone oil in the system, increase the stability of the emulsion, and can quickly reach the foam surface to achieve the defoaming effect, effectively solving the problem of the stability of the defoamer used in traditional drilling mud And the problem of poor defoaming durability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018]Weigh 300g of wollastonite, place it in a pulverizer, and pass through a 325 mesh sieve after crushing to obtain wollastonite powder. Weigh 150g of the obtained wollastonite powder and 80g of polyaspartic acid in sequence, and pour them into 1800mL deionized Put the three-necked flask of water in a three-necked flask, and then place the three-necked flask in a digital speed measuring constant temperature magnetic stirrer, and stir and mix at a constant temperature for 45min at a temperature of 55°C and a speed of 800r / min; when the stirring and mixing are completed, adjust the temperature to 65°C , stirring speed to 500r / min, under constant temperature stirring state, dropwise add mass fraction of 20% hydrochloric acid to the above-mentioned three-necked flask through the dropping funnel, adjust the pH of the material in the three-necked flask to 0.3, continue the constant temperature stirring reaction for 3h, and wait for the reaction to end , dropwise add a mass fractio...

example 2

[0021] Weigh 500g of wollastonite, place it in a pulverizer, and pass through a 500-mesh sieve after crushing to obtain wollastonite powder. Weigh 200g of the obtained wollastonite powder and 100g of polyaspartic acid in turn, and pour them into 2000mL deionized Put the three-necked flask of water in a three-necked flask, and then place the three-necked flask in a digital speed measuring and constant temperature magnetic stirrer, at a temperature of 60°C and a speed of 1000r / min, stir and mix at a constant temperature for 60min; when the stirring and mixing are completed, adjust the temperature to 70°C , stirring speed to 600r / min, under constant temperature stirring, dropwise add mass fraction of 25% hydrochloric acid to the above-mentioned three-necked flask through the dropping funnel, adjust the pH of the material in the three-necked flask to 0.5, continue the constant temperature stirring reaction for 5h, and wait for the reaction to end , dropwise add a mass fraction of 2...

example 3

[0024] Weigh 400g of wollastonite, place it in a pulverizer, and pass through a 412 mesh sieve after crushing to obtain wollastonite powder. Weigh 175g of the obtained wollastonite powder and 90g of polyaspartic acid in turn, and pour them into 1900mL deionized Put the three-necked flask of water in a three-necked flask, and then place the three-necked flask in a digital speed measuring and constant temperature magnetic stirrer, at a temperature of 58°C and a rotating speed of 900r / min, stir and mix at a constant temperature for 52min; when the stirring and mixing are completed, adjust the temperature to 67°C , stirring speed to 550r / min, under constant temperature stirring state, dropwise add mass fraction of 23% hydrochloric acid to the above-mentioned three-necked flask through the dropping funnel, adjust the pH of the material in the three-necked flask to 0.4, continue the constant temperature stirring reaction for 4h, and wait for the reaction to end , add dropwise a mass ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a water-base organic silicon de-foaming agent special for drilling fluid and belongs to the technical field of de-foaming agents. The method comprises the following steps: firstly, stirring and mixing wollastonite powder with polyaspartic acid; utilizing hydrochloric acid to react with wollastonite; taking polyaspartic acid as a core, so that the generated silica sol is absorbed by the carboxyl on the surface of polyaspartic acid, thereby forming a shell core structure; adjusting with a sodium hydroxide solution till the pH value is proper for gelling the silica sol, thereby forming a silicon dioxide aquo-complex shell; utilizing high-temperature roasting to volatilize the polyaspartic acid core and form a hollow porous silicon dioxide structure; utilizing maleic anhydride modified hollow porous silicon dioxide to promote the wettability and dispersity in an organic phase and the suspension dispersing performance in water; compounding and mixing with simethicone; and adding borax as an anti-microbial insecticide component, thereby acquiring the water-base organic silicon de-foaming agent special for drilling fluid.

Description

technical field [0001] The invention discloses a preparation method of a special water-based organosilicon defoamer for drilling mud, and belongs to the technical field of defoamers. Background technique [0002] Drilling fluid is a mud fluid prepared from various components, and it is a general term for various circulating fluids that meet the needs of drilling work with multiple functions during the drilling process. Due to the surface activity of the drilling fluid, the hydrocarbons, carbon dioxide, hydrogen sulfide and other gases in the formation will diffuse or invade into the drilling fluid. During the gas-liquid mixing process, the drilling fluid will generate foam. The viscosity and density of drilling fluid after foaming will change. However, the foam in the drilling fluid is not easy to discharge, and it will cause the accumulation of bubbles in the long run, which will affect the quality of the drilling operation, such as the rheological properties of the drilli...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09K8/035
CPCC09K8/035
Inventor 汪逸凡许丽君李雪晴
Owner 汪逸凡