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

Preparation method of salt-tolerant and stable type starch-based fluid-loss-resistant agent material

A stable, starch-based technology, used in chemical instruments and methods, drilling compositions, etc., can solve problems such as poor salt tolerance and inability to meet demand, and achieve improved salt tolerance, improved filtration performance, The effect of strong thermal stability

Inactive Publication Date: 2018-05-11
李竑靓
View PDF4 Cites 0 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: Aiming at the problem that the starch-based fluid loss control agent cannot meet the demand of the existing environment for the starch-based fluid loss control agent due to its poor salt tolerance, a salt-tolerant and stable starch-based anti-corrosion Preparation method of fluid loss agent material

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
  • Preparation method of salt-tolerant and stable type starch-based fluid-loss-resistant agent material

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] In parts by weight, weigh 45-50 parts of methacrylamidopropyltrimethylammonium chloride, 10-15 parts of deionized water, 2-3 parts of dibenzoyl peroxide, 0.5-1.0 parts of Potassium sulfate was placed in a three-necked flask, then heated in a water bath at 65-75°C for 2-3 hours, allowed to stand and cooled to room temperature, filtered and collected filter cake, vacuum freeze-dried and ground through a 200-mesh sieve to obtain a ground powder and use a mass fraction of 5 Wash with % sodium humate solution for 3 to 5 times, dry naturally and vacuum freeze-dry to obtain a modified gel; add the modified gel to deionized water at a mass ratio of 1:25, and then ultrasonicate at 200 to 300W Shake for 10-15 minutes to obtain a suspension and mix the suspension with a mass fraction of 1% copper chloride solution at a volume ratio of 1:1, let it stand for adsorption and swell for 16-18 hours, and then mix it at 1200-1500r / min After massaging for 2-3 hours, a homogeneous sol solut...

example 2

[0020] In parts by weight, weigh 45-50 parts of methacrylamidopropyltrimethylammonium chloride, 10-15 parts of deionized water, 2-3 parts of dibenzoyl peroxide, 0.5-1.0 parts of Potassium sulfate was placed in a three-necked flask, then heated in a water bath at 65-75°C for 2-3 hours, allowed to stand and cooled to room temperature, filtered and collected filter cake, vacuum freeze-dried and ground through a 200-mesh sieve to obtain a ground powder and use a mass fraction of 5 Wash with % sodium humate solution for 3 to 5 times, dry naturally and vacuum freeze-dry to obtain a modified gel; add the modified gel to deionized water at a mass ratio of 1:25, and then ultrasonicate at 200 to 300W Shake for 10-15 minutes to obtain a suspension and mix the suspension with a mass fraction of 1% copper chloride solution at a volume ratio of 1:1, let it stand for adsorption and swell for 16-18 hours, and then mix it at 1200-1500r / min After massaging for 2-3 hours, a homogeneous sol solut...

example 3

[0022]In parts by weight, weigh 45-50 parts of methacrylamidopropyltrimethylammonium chloride, 10-15 parts of deionized water, 2-3 parts of dibenzoyl peroxide, 0.5-1.0 parts of Potassium sulfate was placed in a three-necked flask, then heated in a water bath at 65-75°C for 2-3 hours, allowed to stand and cooled to room temperature, filtered and collected filter cake, vacuum freeze-dried and ground through a 200-mesh sieve to obtain a ground powder and use a mass fraction of 5 Wash with % sodium humate solution for 3 to 5 times, dry naturally and vacuum freeze-dry to obtain a modified gel; add the modified gel to deionized water at a mass ratio of 1:25, and then ultrasonicate at 200 to 300W Shake for 10-15 minutes to obtain a suspension and mix the suspension with a mass fraction of 1% copper chloride solution at a volume ratio of 1:1, let it stand for adsorption and swell for 16-18 hours, and then mix it at 1200-1500r / min After massaging for 2-3 hours, a homogeneous sol soluti...

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 relates to a preparation method of a salt-tolerant and stable type starch-based fluid-loss-resistant agent material and belongs to the technical field of fluid-loss-resistant agent materials. Cationic gel is prepared from methacrylamide propyl trimethyl ammonium chloride by polymerization, electrostatic adsorption can be formed between the gel and clay through cationic groups, actingforce of electrostatic adsorption is stronger than that formed by hydrogen bonds, fast adsorption can be realized even in a saline and high-temperature system, clay particle surfaces are wrapped withthe gel, so that specific surface area and the negative charges on the surface of the clay are reduced greatly, water sensitivity of the clay is weakened, functions of stabilizing the clay, suppressing dispersion and reducing fluid loss are achieved, and the fluid loss reduction performance of the material is improved effectively.

Description

technical field [0001] The invention relates to a preparation method of a salt-tolerant and stable starch-based anti-fluid loss agent material, and belongs to the technical field of fluid loss control agent materials. Background technique [0002] In recent years, with the increase of oil demand year by year, the exploration and development of oil and gas fields have gradually turned to deep formations and offshore oil and gas reservoirs with harsh environments. Therefore, various complex situations will be faced when drilling. becomes even more important. The filtration of drilling fluid refers to the process that water will enter the formation through the well wall due to the pressure difference near the well wall. When the drilling fluid is circulating, it is necessary to ensure that the fluid loss of the drilling fluid is within a reasonable range. If the fluid loss becomes too large, the formation rock will expand due to hydration, and the distance between the drill pi...

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 Applications(China)
IPC IPC(8): C09K8/035C08F120/60C08J9/28C08J3/075C08J7/02C08J7/12C08L33/24
CPCC08F120/60C08J3/075C08J7/02C08J7/12C08J9/28C08J2333/24C09K8/035
Inventor 李竑靓蒋益
Owner 李竑靓
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