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

Preparation and application of a kind of inorganic silicon phosphate oligomer

A technology of silicon phosphate and oligomers, applied in the direction of inorganic chemistry, silicon compounds, drilling compositions, etc., can solve the problems of ternary production well scaling, bottom layer damage, stuck pump, etc., and achieve low cost and huge Economic benefits and the effect of enhanced oil recovery

Active Publication Date: 2011-11-30
DAQING HUAYING CHEM IND
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it was also found in the mines that due to the use of high-concentration strong alkali, various mines had problems such as damage to the bottom layer, fouling of ternary production wells, pump jams, and broken rods to varying degrees.

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

Embodiment 1

[0028] At room temperature, take 30 parts of Na 3 SiO 3 Dissolve in 350 parts of water, stir for 20 minutes, after the solution is clarified, add 40 parts of Na 3 PO 4 Stir for 60 minutes, add 2 parts of cross-linking agent HLX-1 after the solution is clarified, and continue stirring for 3 hours. Then the temperature was raised to 65° C., and the temperature was kept constant for 9 hours, and the solvent was evaporated until white powder was obtained. Put the white powder into a high-temperature furnace at 850°C and bake for 8 hours, then cool down to room temperature until the transparent solid is the inorganic silicon phosphate oligomer. The product is soluble in water.

Embodiment 2

[0030] At room temperature, take 20 parts of Na 2 SiO 3 Dissolve in 350 parts of water, stir for 20 minutes, after the solution is clarified, add 60 parts of Na 3 PO 4 Stir for 60 minutes, add 3 parts of cross-linking agent HLX-1 after the solution is clarified, and continue stirring for 3 hours. Then the temperature was raised to 75°C, and the temperature was kept constant for 8 hours, and the solvent was evaporated until white powder was obtained. Put the white powder into a high-temperature furnace at 900°C and bake for 6 hours, then cool down to room temperature until the transparent solid is the inorganic silicon phosphate oligomer. The product is soluble in water.

Embodiment 3

[0032] At room temperature, take 50 parts of Na 2 SiO 3 Dissolve in 500 parts of water, stir for 20 minutes, after the solution is clarified, add 20 parts of Na 3 PO 4 Stir for 60 minutes, add 5 parts of cross-linking agent HLX-1 after the solution is clarified, and continue stirring for 4 hours. Then the temperature was raised to 80° C., and the temperature was kept constant for 12 hours, and the solvent was evaporated until white powder was obtained. Put the white powder into a high-temperature furnace at 950°C and bake for 8 hours, then cool down to room temperature until the transparent solid is the inorganic silicon phosphate oligomer. The product is soluble in water.

[0033] 1. Determination of corrosion inhibition performance:

[0034] In the following examples, according to the "National Standard of the People's Republic of China GB / T18175-2000, Determination of Corrosion Inhibition Performance of Water Treatment Agents - Rotary Coupon Method", RCC-I Rotary Coupo...

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

PropertyMeasurementUnit
scale inhibition rateaaaaaaaaaa
Login to View More

Abstract

The present invention relates to the preparation and application of an inorganic silicon phosphate oligomer. The preparation method of the inorganic silicon phosphate oligomer comprises the following steps: at room temperature, take 10 to 50 parts of Na2SiO3 and dissolve it in 300 ~500 parts of water, stir for 20 minutes, after the solution is clarified, add 10~60 parts of Na3PO4 and stir for 60 minutes, after the solution is clarified, add 1~5 parts of cross-linking agent and continue stirring for 3~4 hours, then heat up to 60~80℃ , keep the temperature for 8-12 hours, evaporate the solvent to get a white powder, put the white powder in a high-temperature furnace at 800-1000°C and roast for 6-8 hours, and cool down to room temperature to get a transparent solid, which is an inorganic silicon phosphate oligomer. The inorganic silicon phosphate oligomer forms a new ternary composite system with a surfactant and a polymer, and forms an ultra-low interfacial tension with crude oil, which can greatly increase oil recovery. At the same time, it has corrosion and scale inhibition properties.

Description

Technical field: [0001] The invention relates to a new inorganic silicon phosphate oligomer used for oil recovery in oilfields, in particular to a method for replacing the strong alkali in the current three-way compound flooding ASP system with the inorganic silicon phosphate oligomer. Background technique: [0002] ASP flooding technology is a new enhanced oil recovery method developed in recent years following polymer flooding in oilfield production. This technology has become the main replacement oil recovery technology for sustained and stable crude oil production. ASP flooding is composed of alkali, surfactant and polymer, and each component is made into an oil displacement system according to a certain ratio, referred to as ASP. Judging from the results of the already used ASP flooding in oilfields and mines, the recovery rate is more than 20% higher than that of water flooding, and its economic and social benefits are very considerable. However, it was also found in ...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C01B33/20C09K8/58
Inventor 孙安顺
Owner DAQING HUAYING CHEM IND