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

Constant voltage pressure control method used for oil well cement curing kettle

A pressure control and oil well cement technology, which is applied in the direction of electric fluid pressure control, etc., can solve the problems such as the failure to test the flexural performance of oil well cement, the inability to achieve constant pressure heating and constant pressure cooling, and the maintenance of strip test blocks.

Active Publication Date: 2013-09-25
JIAHUA SPECIAL CEMENT
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this patent are: 1. Only the cubic test block for testing the compressive performance of oil well cement can be maintained, but the strip test block for testing the flexural performance of oil well cement cannot be maintained; 2. During the maintenance process , cannot achieve constant pressure heating and constant pressure cooling, which does not meet the requirements of GB10238-2005 or GB19139-2003

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
  • Constant voltage pressure control method used for oil well cement curing kettle
  • Constant voltage pressure control method used for oil well cement curing kettle
  • Constant voltage pressure control method used for oil well cement curing kettle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] Below in conjunction with accompanying drawing, the present invention is further described:

[0053] A constant pressure control method for oil well cement curing kettle, comprising the following steps:

[0054] Constant pressure heating step: the pressure of the mold with cement samples and the kettle body of water increases after heating, and the excess pressure is released by a back pressure controller, so that the kettle body maintains a constant pressure during the heating process;

[0055] Constant pressure and constant temperature step: after the constant pressure and temperature raising step, keep the temperature constant and keep the pressure of the kettle body constant within the fluctuation range;

[0056] Constant pressure cooling step: the mold with the cement sample and the kettle body of water undergo heat exchange and cooling with cold water, and the pressure decreases. When the pressure of the kettle body is lower than the back pressure, the back pressu...

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
Depthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a constant voltage pressure control method used for an oil well cement curing kettle. The constant voltage pressure control method sequentially comprises the following steps of: constant voltage heating, constant voltage constant temperature and constant voltage cooling. A conventional pressurization method in which an air compressor, a hydraulic pump, an electromagnetic valve, a buffer tank and the like are used is replaced by the constant voltage pressure control method, pressure surges can be accurately controlled, and the pressure is controlled in an automatic and stable manner. The pressure surges in GB10238-2005 is + / -0.345MPa, and the actual control precision of the constant voltage pressure control method can reach + / -0.25MPa and reaches the technical level which technologies, such as the conventional electromagnetic valve technology in the prior art can not reach.

Description

technical field [0001] The invention relates to the technical field of cement physical and mechanical performance detection, in particular to a constant-pressure pressure control method for oil well cement curing kettles. Background technique [0002] The oil well cement curing kettle is an instrument and equipment used to provide a high temperature and high pressure curing environment for testing the strength of oil well cement. Its technical requirements comply with API Spec 10A. my country's GB10238-2005 is equivalent to the standard content of API Spec 10A, oilfield users use API RP 10B, and my country's GB19139-2003 is equivalent to the standard content of API RP 10B. At present, the curing kettle of CANDLER company is generally used in the world, and the typical model is 7370. Some manufacturers in Shenyang and other places in my country have digested foreign technology and produced curing kettles by themselves. Although there have been some improvements, there has ...

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): G05D16/20
Inventor 陈东陈一健张伦平黎茜古安林阳运霞曾雪玲
Owner JIAHUA SPECIAL CEMENT
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