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

Non-sulfonated temperature-resistant filtrate reducer for drilling fluid, and synthetic method thereof

A fluid loss control agent, non-sulfonic technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of drilling fluid fluid loss control and environmental protection can not have both, to achieve good rheology, resistance to Good salt performance and good filtration effect

Active Publication Date: 2020-06-19
SOUTHWEST PETROLEUM UNIV
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used fluid loss control agents often have to compromise on environmental protection and temperature resistance under the condition of ensuring the fluid loss performance of the drilling fluid, which makes it impossible to have both fluid loss control and environmental protection of the drilling fluid

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
  • Non-sulfonated temperature-resistant filtrate reducer for drilling fluid, and synthetic method thereof
  • Non-sulfonated temperature-resistant filtrate reducer for drilling fluid, and synthetic method thereof
  • Non-sulfonated temperature-resistant filtrate reducer for drilling fluid, and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] 1. A preparation method of an environment-friendly anti-high temperature fluid loss reducer, comprising the following steps:

[0019] (1) Weigh 5g modified nano-SiO 2 Place in a Erlenmeyer flask, add 100ml deionized water to prepare a suspension of nano-silica, stir with a magnetic stirrer at room temperature for 24 hours, and make the modified nano-SiO 2 Fully dispersed to obtain inorganic modified nano-SiO 2 suspension;

[0020] (2) Transfer the above prepared nano-silica suspension to a three-necked flask, and then add AA and DMDAAC with a mass ratio of 3:5 to the flask;

[0021] (3) Adjust the pH value to 7-8 with NaoH solution, turn on the magnetic constant temperature water bath, heat up to 50°C, stir, and pass N into the three-necked flask at the same time 2 30min;

[0022] (4) Stop stirring, add initiator ammonium persulfate and sodium bisulfite to the above-mentioned homogeneous solution, the addition of ammonium persulfate and sodium bisulfite is the same,...

Embodiment 1

[0044] Example 1: Take the fluid loss reducer with a monomer mass ratio of 2:2:1 and add it to the fresh water base slurry to reduce the fluid loss agent effect at different aging temperatures. The test results are shown in Table 4:

[0045] Table 4 Test results of fluid loss control agent added to freshwater base pulp at different aging temperatures

[0046]

Embodiment 2

[0047] Example 2: Take the fluid loss reducer with a monomer mass ratio of 10:5:1 and add it to the brine base slurry to reduce the fluid loss agent effect at different aging temperatures. The test results are shown in Table 5:

[0048] Table 5 Test results of fluid loss control agent added to brine-based slurry at different aging temperatures

[0049]

[0050]

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 high-temperature-resistant filtrate reducer for non-sulfonated drilling fluid, and a synthetic method thereof, and belongs to the technical field of oilfield exploitation drilling treatment agents. The preparation method comprises the following steps: dissolving organosilane coupling agent modified nano silicon dioxide in water, and stirring at normal temperature to fullydisperse the modified nano SiO2 to obtain an inorganic modified nano SiO2 suspension; and mixing acrylic acid (AA), dimethyl diallyl ammonium chloride (DMDAAC) and the inorganic modified nano SiO2 suspension in a weight part ratio of (0-20):(0-30):(0-10). According to the invention, a non-sulfonated monomer is preferably selected and inorganic nano SiO2 is added, the advantages and disadvantagesof the organic polymer and the inorganic nanometer are comprehensively considered, and the temperature-resistant filtrate reducer for the non-sulfonated water-based drilling fluid is synthesized, caneffectively reduce the water loss, has good filtrate reduction performance and temperature resistance under the conditions of normal temperature and 180-200 DEG C, and still has certain temperature resistance and salt resistance after being added into saline water-based slurry and saturated saline water-based slurry.

Description

technical field [0001] The invention relates to a fluid loss reducer for oilfield drilling fluid and a preparation method thereof, and specifically refers to the technical field of a treatment agent for oilfield water-based drilling fluid. Background technique [0002] In recent years, my country's deep well and ultra-deep well drilling technology has intensified. With the continuous deepening of oil well depth, the formation conditions encountered by drilling are more complex, and the difficulty of oil extraction has also increased accordingly. Therefore, higher requirements have been put forward for the drilling fluid system. requirements. In view of the problem that the drilling fluid system is easy to lose water under high temperature conditions, in the prior art, the method of adding fluid loss reducer to the drilling fluid is mostly used to reduce the fluid loss or alleviate the water loss. The sulfonated group substances with serious pollution will be improved. [00...

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): C08F292/00C08F220/06C08F226/02C09K8/035C09K8/24
CPCC08F292/00C09K8/035C09K8/24C08F220/06C08F226/02
Inventor 苏俊霖左富银邓世杰杜瀚卿欧武星
Owner SOUTHWEST PETROLEUM UNIV
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