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

Low-solid-phase high-temperature-resistant salt-resistant completion fluid as well as preparation method and application thereof

A technology with high temperature resistance and low solid phase, applied in chemical instruments and methods, drilling compositions, etc., can solve problems affecting cementing quality, poor cement compatibility, complex chemical composition, etc., to improve heat resistance and salt resistance stability non-toxic, pollution-reducing, and low-consumption effects

Pending Publication Date: 2022-01-25
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the complex chemical composition of some drilling fluid systems, the compatibility with cement is poor, which affects the subsequent cementing quality

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
  • Low-solid-phase high-temperature-resistant salt-resistant completion fluid as well as preparation method and application thereof
  • Low-solid-phase high-temperature-resistant salt-resistant completion fluid as well as preparation method and application thereof
  • Low-solid-phase high-temperature-resistant salt-resistant completion fluid as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] The second aspect of the present invention provides a method for preparing the above-mentioned low-solid-phase, high-temperature, and salt-resistant completion fluid, the preparation method comprising:

[0043] Water, bentonite, potassium formate, high temperature resistant viscosifier, high temperature resistant fluid loss reducer, oil reservoir protection agent, flow pattern regulator and high temperature stabilizer are evenly mixed to obtain the low solid phase high temperature resistant and salt resistant well completion fluid.

[0044] According to the present invention, in a specific embodiment, the preparation method of the above-mentioned low-solid-phase, high-temperature, and salt-resistant completion fluid includes:

[0045] Add bentonite to the water first, then potassium formate, then add high temperature resistant viscosifier, then add high temperature resistant fluid loss reducer, then add oil layer protective agent, then add flow pattern regulator, then ad...

Embodiment 1

[0051] The invention provides a low-solid-phase, high-temperature, and salt-resistant completion fluid and a preparation method thereof.

[0052] First add 3 parts by weight of bentonite to 100 parts by weight of water, then add 10 parts by weight of potassium formate, then add 1 part by weight of anti-high temperature tackifier xanthan gum, and then add 2 parts by weight of anti-high temperature fluid loss reducer sulfur Methyl phenolic resin SMP-Ⅱ, plus 1 part by weight of oil reservoir protection agent FZD-1, plus 1 part by weight of flow regulator, zwitterionic polymer viscosity reducer XY-27, plus 1 part by weight of high temperature stable Agent CMC-LV, mixed evenly to obtain a low-solid, high-temperature, and salt-resistant completion fluid.

Embodiment 2

[0054] The invention provides a low-solid-phase, high-temperature, and salt-resistant completion fluid and a preparation method thereof.

[0055] First add 3 parts by weight of bentonite to 100 parts by weight of water, then add 3 parts by weight of bentonite, then add 50 parts by weight of potassium formate, then add 5 parts by weight of anti-high temperature tackifier xanthan gum, then add 5 parts by weight of The anti-high temperature fluid loss reducer sulfomethyl phenolic resin SMP-Ⅱ, plus 3 parts by weight of oil layer protection agent FZD-1, plus 5 parts by weight of flow regulator zwitterionic polymer viscosity reducer XY-27, Add 3 parts by weight of high-temperature stabilizer CMC-LV, and mix evenly to obtain a low-solid-phase, high-temperature, and salt-resistant completion fluid.

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
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a low-solid-phase high-temperature-resistant salt-resistant completion fluid as well as a preparation method and application thereof. The low-solid-phase high-temperature-resistant salt-resistant completion fluid comprises the following components in parts by weight: 100 parts of water, 1-6 parts of bentonite, 10-260 parts of formate, 1-10 parts of a high-temperature-resistant tackifier, 2-10 parts of a high-temperature-resistant filtrate reducer, 1-6 parts of an oil layer protective agent, 1-10 parts of a flow pattern regulator and 1-5 parts of a high-temperature stabilizer. The low-solid-phase, high-temperature-resistant and salt-resistant completion fluid has good rock debris carrying suspension capacity in a deep well, can be used for deep exploration and development, is high in adaptability, can be used for formation of high-temperature, low-pressure and low-permeability sandstone, mudstone and mudstone shale reservoirs and salt layers, has good shale hydration expansion inhibition capacity and reservoir protection effect, and is mainly used for deep well completion construction.

Description

technical field [0001] The invention belongs to the field of completion fluids, and more specifically relates to a low-solid-phase, high-temperature, and salt-resistant completion fluid and its preparation method and application. Background technique [0002] In recent years, with the increase in the number of special wells, ultra-deep wells and complex wells, the drilling of deep and ultra-deep wells has been regarded as an important aspect of the future development of the drilling industry at home and abroad. Higher requirements are put forward for the drilling fluid technology, and the original drilling fluid treatment agent can not fully meet the needs of the development of the drilling fluid technology. Because the deeper the well, the more technical difficulties, therefore, all countries in the world regard the drilling depth and speed as an important symbol of the drilling process. Practice has proved that the quality of drilling fluid for deep wells and ultra-deep w...

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): C09K8/24C09K8/20
CPCC09K8/206C09K8/24C09K2208/12
Inventor 李真祥程焱陈思安白杨韦谷运唐瑞江代俊清段华
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