Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of high softening point asphalt for drilling fluid

A high softening point bitumen and drilling fluid technology, applied in chemical instruments and methods, chemical processing of tar pitch/petroleum pitch/natural pitch, drilling compositions, etc. Increase energy consumption, improve product softening point, good water solubility

Active Publication Date: 2018-03-16
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for asphalt with high softening point, the heat of sulfonation reaction is not enough to make the asphalt become liquid

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of high softening point asphalt for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 120g rock asphalt (softening point is 212°C) and 100g kerosene in a container, stir at room temperature (25°C) for 20 minutes, and prepare the mother liquor after fully mixing. Put 80g of vacuum residue with a penetration of 82 1 / 10mm (softening point is 44.6°C) in a mixing tank and heat it to a molten state of 140°C, add the mother liquor and stir evenly, then add 10g of sulfur trioxide and react for 10 minutes , then add 30wt% sodium hydroxide solution to neutralize to a pH of 9, then feed compressed nitrogen, adjust the pressure reducing valve to make the gas inlet pressure of the mixing tank 0.15 MPa, keep the temperature of the mixing tank at 190 ° C, stir for 100 minutes, and then heat up to 220°C and stirred for 30 minutes to obtain a high softening point pitch product. The product properties are shown in Table 1.

Embodiment 2

[0032]Take 160g of rock asphalt (softening point is 226°C) and 150g of diesel oil in a container, stir at 60°C for 15 minutes, and prepare the mother liquor after fully mixing. Put 40g of vacuum residue with a penetration of 45 1 / 10mm (softening point is 47.8°C) in a mixing tank and heat it to a molten state of 150°C, add the mother liquor and stir evenly, then add fuming sulfuric acid (SO 3 Content is 25wt%) 40g, react for 20 minutes, then add 30wt% sodium hydroxide solution to neutralize to pH 9, feed compressed nitrogen, adjust the pressure reducing valve so that the gas inlet pressure of the mixing tank is 0.22 MPa, and the temperature of the mixing tank is maintained at Stir at 210°C for 90 minutes, then raise the temperature to 270°C and stir for 25 minutes to obtain a high softening point asphalt product. The product properties are shown in Table 1.

Embodiment 3

[0036] Take 150g of rock asphalt (softening point is 226°C) and 130g of diesel oil in a container, stir at 50°C for 10 minutes, and mix thoroughly to obtain the mother liquor. Put 50g of vacuum residue with a penetration of 58 1 / 10mm (softening point is 46.2°C) in a mixing tank and heat it to a molten state of 150°C, add the mother liquor and stir evenly, then add 30g of sulfur trioxide and react for 1 hour , and then add 30wt% sodium hydroxide solution to neutralize to a pH of 9, and pass through compressed helium, adjust the pressure reducing valve so that the gas inlet pressure of the mixing tank is 0.20 MPa, keep the temperature of the mixing tank at 200 ° C, and stir for 85 minutes. The temperature of the mixing tank was raised to 260° C. and kept for 25 minutes. The process conditions and product properties are shown in Table 1.

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
softening pointaaaaaaaaaa
softening pointaaaaaaaaaa
softening pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of high softening point asphalt for drilling fluid, which comprises the following contents: a modifier and a compatibilizer are mixed to obtain a mother liquor, and the mother liquor and molten asphalt raw materials are added to a blending tank to mix evenly, and then sulfonated Compatibilizer for sulfonation reaction, then add alkaline solution for neutralization, and then pass compressed gas from the bottom of the blending tank for stripping treatment, the compatibilizer is in gas phase and is discharged from the upper outlet of the blending tank, and can be recycled after cooling. , to obtain high softening point asphalt. Aiming at the deficiencies of the prior art, the method of the present invention has simple process, convenient operation, short production time, reduces energy consumption, saves production cost, and the obtained product has a higher softening point, excellent high-temperature performance, and good water solubility. Wide range.

Description

technical field [0001] The invention relates to a preparation method of high softening point asphalt for drilling fluid. Background technique [0002] Asphalt products are one of the important drilling fluid treatment agents, which have good comprehensive effects such as anti-slump, lubrication, emulsification, fluid loss reduction and high temperature stability. Bituminous products generally contain bitumen particles that are insoluble in water and have a certain softening point. When the temperature and pressure in the wellbore are high enough, the asphalt particles soften and deform, and are squeezed into the micro-fractures of the well wall, preventing drilling fluid and filtrate from penetrating through the micro-fractures, and effectively sealing the formation together with the mud cake. Bituminous substances are extremely effective anti-slump agents and oil layer protection agents for oil drilling. With the development of petroleum exploration and development, the d...

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): C10C3/04C09K8/035
Inventor 石君章李明林宁爱民李志军
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com