Oil well cement high-temperature high-pressure compressive stress strain system

A compressive stress, high temperature and high pressure technology, applied in the direction of applying stable tension/pressure to test the strength of materials, thermometers, measuring devices, etc. High pressure maintenance and other issues

A compressive stress, high temperature and high pressure technology, applied in the direction of applying stable tension/pressure to test the strength of materials, thermometers, measuring devices, etc. High pressure maintenance and other issues

CN102401769AActive Publication Date: 2012-04-04CHINA PETROLEUM & CHEM CORP +1
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  • Oil well cement high-temperature high-pressure compressive stress strain system
  • Oil well cement high-temperature high-pressure compressive stress strain system
  • Oil well cement high-temperature high-pressure compressive stress strain system

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Embodiment Construction

[0060] figure 1 It is the high temperature and high pressure compression stress and strain system diagram of oil well cement, in which: air compressor 1 pipeline system 2, pressure control unit 3, power supply 4, physical parameter control module panel 5, signal analysis control processing module 6, water source 7, output pressure pressure Table 8, input pressure gauge 9, water source valve 10, high pressure output valve 11, pressurization rate regulating valve 12, power switch 13, maintenance pressure hose 14, pressure head pressurization hose 15, displacement sensor 16, thermocouple 17, heating Kettle casing 18, heating kettle casing hole 43, oil well cement high temperature and high pressure compressive stress strain gauge 44, operating table 45, pressure regulating valve 46

[0061] The power supply 4 is connected to the pressure control unit 3, the oil well cement high temperature and high pressure compression stress strain gauge 44, and the signal analysis control proces...

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Abstract

The invention relates to an oil well cement high-temperature high-pressure compressive stress strain system comprising a cement compression testing module, a power source, a pressure controlling unit, a temperature controlling unit, a signal controlling and processing unit, and pipelines. With the invention, temperature and pressure of bottom hole maintenance can be simulated. The compressive stress of oil well cement stones can be continuously measured under the temperature and pressure, and a temperature-pressure curve and a compressive stress-strain curve can be recorded. With the system and the method, anti-compression properties of different cement slurry systems can be directly measured and compared. The system and the method are beneficial for the design of cement slurry formulas. With the system and the method, cement slurry systems satisfying in-field construction requirements can be obtained.

Description

technical field [0001] The invention belongs to the field of cement stone testing for oil field cementing, and relates to a high-temperature and high-pressure compressive stress-strain system for oil well cement, which can simulate underground static condition maintenance, measure the compressive stress-strain and compressive stress-strain performance of cement stones at different times. Background technique [0002] At present, there are few indoor testing methods for the resistance of cement stone to compressive stress and strain. To a large extent, the test standards of the concrete industry are used for reference, and the function of the measuring instrument is single. Compressive strength, elastic modulus, stress / strain and other technical parameters, the existing measuring equipment such as hydraulic feeding press can only measure the compressive strength of cement stone at normal temperature and pressure, and cannot simulate the measurement of cement stone strength und...

Claims

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Application Information

Patent Timeline
04 Apr 2012
Publication
CN102401769A
IPC
G01N3/18; G01B21/32; G01K7/02
Inventors
桑来玉; 丁士东