High-temperature and high-pressure volume expansion and shrinkage tester of oil well cement

A high-temperature, high-pressure, volumetric expansion technology, applied in material inspection products and other directions, can solve problems such as the inability to realize the real-time expansion of cement slurry, the inability to simulate and measure the expansion performance of cement slurry, and the inability to realize real-time recording of experimental data.

Active Publication Date: 2013-02-13
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in this industry, measuring equipment such as concrete shrinkage expansion rate tester or screw micrometer is often used to measure the length value before and after shrinkage. Although this can measure the linear expansion of cement stone, neither of them can accurately measure cement. The volume expansion rate of the slurry; the...

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
  • High-temperature and high-pressure volume expansion and shrinkage tester of oil well cement
  • High-temperature and high-pressure volume expansion and shrinkage tester of oil well cement
  • High-temperature and high-pressure volume expansion and shrinkage tester of oil well cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0042] Such as figure 1 As shown, a high-temperature and high-pressure volume expansion and contraction tester for oil well cement includes a high-temperature and high-pressure kettle, a temperature control system, a pressure control system, a controller and a computer data processing system.

[0043] ① High temperature and high pressure kettle

[0044] Such as image 3 As shown, the high-temperature autoclave is made of stainless steel, including a kettle body 28, a kettle body upper cover 30 and a kettle body lower cover 35; the cement slurry sample and the pressure transmission medium (water) are isolated, and a piston in the still cavity promptly starts charging The pressure effect also plays an isolation role.

[0045] The kettle body 28 is a hollow structure, the kettle body upper cover 30 is installed on the upper end of the kettle body 28, the kettle body l...

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 provides a high-temperature and high-pressure volume expansion and shrinkage tester of oil well cement, and belongs to the field of volume expansion and shrinkage test devices of the oil well cement. The tester comprises a high-temperature and high-pressure kettle, a temperature control system, a pressure control system, a controller and a computer data processing system. The tester can simulate the volume shrinkage rate and the volume expansion rate of the oil well cement in a vertical well and a horizontal well at a maintenance temperature under a maintenance pressure, and record a temperature-pressure curve and a time-expansion/shrinkage rate curve. The tester provided by the invention has the advantages of adjustable experiment pressure, automatically-controlled experiment temperature, real-time display of the experiment pressure and the experiment temperature, real-time display of the volume expansion/shrinkage curve of a cement mortar, simple experiment operation, automatic output and preservation of experiment results, automatic generation of an experiment report, reasonable structure and layout, and concise appearance.

Description

technical field [0001] The invention belongs to the field of volume expansion and contraction measuring devices for oil well cement, in particular to a high temperature and high pressure volume expansion and contraction tester for oil well cement, which is used for testing and comparing the expansion and contraction properties of different cement slurry systems in different well conditions. Background technique [0002] At present, the existing high temperature and high pressure dilatometers include: [0003] "Non-contact high temperature and high pressure intelligent dilatometer" (application number 200420064869.4): This patent provides a high temperature and high pressure dilatometer for measuring the expansion properties of clay, but this instrument cannot be used to measure the expansion and contraction ratio of cement slurry in horizontal wells , and the experimental temperature does not reach 170°C. [0004] "High Temperature and High Pressure Dilatometer" (Applicatio...

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): G01N33/38
Inventor 汪晓静丁士东王其春杨红歧刘伟初永涛常连玉谭春勤刘学鹏陶谦
Owner CHINA PETROLEUM & CHEM CORP
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