Test method for simulating flowing state of oil well cement paste and integrating maintenance and test

A technology of oil well cement slurry and flow state, applied in the field of oil drilling, can solve the problems of not being able to simulate the temperature and pressure environment of the process well, and achieve the effect of ensuring accuracy

Active Publication Date: 2021-01-05
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After years of research and development, considerable progress has been made in cement stone strength testing devices at home and abroad (for example: Zhu Jianglin. A high-temperature and high-pressure curing and strength, elastic modulus comprehensive tester: CN110823712A, Liu Shujie. A high-temperature and high-pressure cement Stone curing device and preparation method of cement stone: CN111300617A, Jin Jianzhou. Cement slurry performance test system and its method: CN105571991A, etc.), although these devices can measure the cement stone strength, they cannot simulate the cement slurry injection well The temperature and pressure environment of the process and maintenance test

Method used

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  • Test method for simulating flowing state of oil well cement paste and integrating maintenance and test
  • Test method for simulating flowing state of oil well cement paste and integrating maintenance and test

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Embodiment 1

[0042] Such as figure 1 As shown, this embodiment discloses a test device for simulating the flow state of oil well cement slurry and integrating maintenance and testing, including a sealable slurry cup for holding the cement slurry 7 and a sealed kettle for placing the sealable slurry cup A stirring mechanism is arranged in the sealable pulp cup, and the upper end of the stirring mechanism passes through the sealable pulp cup and the sealed kettle body; it also includes a transmission mechanism controller 10 for controlling the rotation of the stirring mechanism in the sealable pulp cup, The temperature control subsystem 16 used to detect and control the temperature in the sealable slurry cup and the sealed kettle body, the pressure control subsystem 19 used to detect and control the pressure in the sealed kettle body, and the ultrasonic wave used to detect the ultrasonic propagation speed in the slurry cup The control subsystem 24 is connected with the transmission mechanism...

Embodiment 2

[0051] As another preferred embodiment of the present invention, with reference to the attached figure 1 , this example discloses:

[0052] A test device for simulating the flow state of oil well cement slurry and integrating maintenance and testing, including a sealable slurry cup for containing cement slurry 7 and a sealed kettle body for placing the sealable slurry cup, the sealable slurry cup A stirring mechanism is arranged inside, and the upper end of the stirring mechanism passes through the sealable pulp cup and the sealed kettle body; it also includes a transmission mechanism controller 10 for controlling the rotation of the stirring mechanism in the sealable pulp cup, which is used to detect and control the sealable pulp The temperature control subsystem 16 of the temperature in the cup and the sealed kettle body, the pressure control subsystem 19 used to detect and control the pressure in the sealed kettle body, the ultrasonic control subsystem 24 used to detect the...

Embodiment 3

[0071] As another preferred embodiment of the present invention, with reference to the attached figure 1 , this embodiment discloses a test device and method for simulating the flow state of oil well cement slurry and integrating maintenance and testing. Bottom cover of slurry cup 5, slurry cup wall 6, cement slurry 7, paddle blade 8, rotary joint 9, transmission mechanism controller 10, heater 11, heater external joint 12, internal coupling temperature probe 13, internal coupling temperature Sensor 14, externally coupled temperature sensor 15, temperature control subsystem 16, pressurization and pressure relief interface 17, pressure sensor 18, pressure control subsystem 19, ultrasonic transmitter 20, transmitter connector 21, ultrasonic receiver 22, receiver Joint 23, ultrasonic control subsystem 24, confining pressure valve 25, hydraulic oil 26, and computer control system 27.

[0072] The kettle body top cover 1 is fixed on the upper end surface of the kettle body through...

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Abstract

The invention discloses a test method for simulating the flowing state of oil well cement paste and integrating maintenance and test, and relates to the technical field of petroleum drilling. The method comprises the following steps of: simulating the flowing state of the cement paste in a well by using a transmission mechanism controller and a stirring mechanism, simulating the temperature and pressure environment of the cement paste in the well by using a temperature control subsystem and a pressure control subsystem, keeping the simulation environment stable, acquiring the ultrasonic propagation speed by using an ultrasonic control subsystem, converting the ultrasonic propagation speed into a set cement compressive strength value, and finally generating a set cement compressive strengthdynamic test curve graph by using a computer control system to realize the dynamic test of the set cement compressive strength. The method can simulate the actual high-temperature and high-pressure environment in the well, can simulate the flowing speed of the cement paste in the injection process by adjusting the rotating speed, and can research the influences of different rotating speeds on theset cement compressive strength.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, more specifically to a test method for simulating the flow state of oil well cement slurry and integrating maintenance and testing in cementing engineering in the field of petroleum drilling. Background technique [0002] During well cementing construction, cement slurry is filled in the annular space between the casing and the wellbore, and the cement stone formed after solidification has the functions of supporting the well wall, protecting the casing, and isolating the oil, gas and water layers. Compressive strength is one of the important physical performance parameters to measure the bearing capacity of cement stone, and the accuracy of its test results is particularly important. [0003] For the test of the compressive strength of cement stone, the current common practice in the industry is: put the prepared cement slurry into the normal pressure thickener or pressurized thickene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B47/07E21B47/06E21B47/14G09B25/04
CPCE21B47/00E21B47/06E21B47/14G09B25/04
Inventor 薛元陶曾雪玲古安林种娜
Owner JIAHUA SPECIAL CEMENT
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