Coating-containing core as well as core holder anti-corrosion method and core displacement experiment method

A technology for core holders and displacement experiments, which is applied in the direction of scientific instruments, preparation of test samples, and measuring devices. High temperature resistance and high wear resistance

Active Publication Date: 2013-08-21
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such materials generally have defects ...

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

[0075] This embodiment provides a coated rock core, which includes a pretreated raw rock core, and a coating located on the side surface of the pretreated raw rock core, the coating is a modified epoxy resin coating, The thickness of the coating is 0.1-0.5mm.

[0076] The coated rock core of the present embodiment is prepared by the following method:

[0077] Grinding the raw rock core with sandpaper to make its surface smooth and slightly smaller than the normal rock core to obtain the raw rock core after grinding;

[0078] Rinse the polished raw material core with flowing water, and brush out fine dust on the surface of the polished raw material core with a brush at the same time to obtain a cleaned raw material core;

[0079] Drying the cleaned raw rock core in an oven greater than 80°C to obtain the pretreated raw rock core;

[0080] Epoxy resin and dibutyl phthalate are stirred and mixed evenly to obtain a modified epoxy resin main agent, then ethylenediamine is added t...

Embodiment 2

[0083] The present embodiment provides a kind of anticorrosion method of rock core holder, and it comprises the following steps:

[0084] Before carrying out the core displacement experiment, use sandpaper to grind the raw rock core to make its surface smooth and slightly smaller than the normal rock core, so as to obtain the polished raw rock core;

[0085] Rinse the polished raw material core with flowing water, and brush out fine dust on the surface of the polished raw material core with a brush at the same time to obtain a cleaned raw material core;

[0086] Drying the cleaned raw rock core in an oven greater than 80°C to obtain the pretreated raw rock core;

[0087] Stir and mix the epoxy resin and ethylenediamine evenly to obtain a coating; wherein, the ratio of the epoxy resin to ethylenediamine is calculated according to the following formula: w=GM / Hn / 100, where w is the amount of amine added Mass percentage of curing agent (based on the total mass of epoxy resin and ...

Embodiment 3

[0090] This embodiment provides a core CO 2 Displacement experimental method, it may further comprise the steps:

[0091] Grinding the raw rock core with sandpaper to make its surface smooth and slightly smaller than the normal rock core to obtain the raw rock core after grinding;

[0092] Rinse the polished raw material core with flowing water, and brush out fine dust on the surface of the polished raw material core with a brush at the same time to obtain a cleaned raw material core;

[0093] Drying the cleaned raw rock core in an oven greater than 80°C to obtain the pretreated raw rock core;

[0094] Epoxy resin and dibutyl phthalate are stirred and mixed evenly to obtain a modified epoxy resin main agent, then ethylenediamine is added to the modified epoxy resin main agent, and the modified epoxy resin main agent is Stir and mix with ethylenediamine to obtain a coating; wherein, the ratio of the epoxy resin, dibutyl phthalate and ethylenediamine is: add 10-20 grams of pht...

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
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a coating-containing core as well as a core holder anti-corrosion method and a core displacement experiment method. The coating-containing core comprises a pretreated raw material core and a coating which is located on the surface of the pretreated raw material core. The core holder anti-corrosion method comprises the following steps of: coating paint on the contact surface between the pretreated raw material core and a core holder before a core displacement experiment, and drying to obtain the coating-containing core. The core displacement experiment method comprises the following steps of: coating paint on the contact surface between the pretreated raw material core and the core holder, drying to obtain the coating-containing core, and carrying out a core CO2 displacement experiment by using the coating-containing core. The coating has high temperature resistance, corrosion resistance, airtightness and core surface adhesiveness. According to the coating-containing core as well as the core holder anti-corrosion method and the core displacement experiment method, the core holder can be protected from CO2 corrosion.

Description

technical field [0001] The present invention relates to a kind of rock core with coating, a kind of anti-corrosion method of rock core holder and a kind of rock core CO 2 A displacement experiment method belongs to the technical field of petroleum exploitation. Background technique [0002] The core holder is a special device that can hold and seal the core, complete the core permeability, porosity test and various core displacement experiments. Generally speaking, the function of the core holder is to completely seal the side surface of the core sample when the core sample to be tested or to be tested is put into it and ensure that the test fluid passes through the front and rear ends of the core sample. Various types of holders currently used, whether they are mechanical seals, hydraulic seals or pneumatic seals, all use rubber sleeves. [0003] Currently, common core holders are used for CO 2 During the displacement experiment, the core is in direct contact with the ru...

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): G01N15/08G01N1/28
Inventor 侯吉瑞唐永强王凤刚赵凤兰刘中春
Owner CHINA UNIV OF PETROLEUM (BEIJING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap