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Detecting process of well control product and well head apparatus under high temperature gas medium state

A wellhead device and high-temperature gas technology, which is applied in the direction of measuring devices, testing of machine/structural components, and by measuring the rate of increase and deceleration of fluids, etc., can solve the problems of increasing the incidence of safety accidents, low reliability, and inability to continue to use , to achieve the effect of reducing the incidence of safety accidents, ensuring the reliability of use and improving safety

Active Publication Date: 2008-10-08
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, during the construction of oil and gas drilling projects, well control products and wellhead devices are operating in vibration every day, and are also subjected to various temperatures and pressures, so their performance is constantly changing. In order to ensure safe drilling Requirements, according to regulations, well control products and wellhead devices must be tested for performance after a period of use. At present, such testing not only consumes a lot of time, but also can only be carried out simply on the pressure bearing capacity of well control products and wellhead devices. However, the quality and performance of well control products and wellhead devices cannot be quantitatively evaluated. Therefore, there are still potential dangers in the future use of well control products and wellhead devices after factory testing.
At present, when testing the blowout preventer, when using water pressure or hydraulic pressure to pressurize the blowout preventer, a displacement testing instrument is installed on the upper end of the blowout preventer shell to detect when pressurization and before pressurization, The longitudinal displacement of the blowout preventer shell, and then compare the value of the displacement with the specified value, and if it is greater than the specified value, it is deemed that it cannot continue to be used
This detection method can detect the metal deformation of the blowout preventer shell in the factory environment. By testing the qualified blowout preventer in the factory in this way, the performance of the equipment is constantly changing in different environments and with time. changes, so it is still impossible to know the situation of the blowout preventer in real time with the development of the drilling project. Therefore, there is still a big safety problem, and the above detection can only be aimed at the blowout preventer
[0003] At present, national standards, industry standards, API, and ISO standards all require well control equipment and wellhead devices to be tested for adaptability to high-temperature medium and low-temperature environments, but there is no testing equipment capable of implementing such tests in China, and only the United States and other countries abroad Few developed countries have test conditions, resulting in low reliability of well control products and wellhead devices, which greatly increases the incidence of safety accidents and reduces the safety during drilling

Method used

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  • Detecting process of well control product and well head apparatus under high temperature gas medium state

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A detection process for well control products and wellhead devices in the state of high-temperature gas medium, mainly used for detection of control valves, including a. Installing the detected part on the detection device, and then connecting the detected part such as one end of the control valve with the air Connect the compressor unit; b. Turn on the heater of the detection device to heat the air temperature in the inner chamber of the tested part to a rated high temperature of 60°C, and use the computer control system to keep the temperature at the rated temperature; c. Turn on the air compressor unit to Pressurize the tested part to the rated pressure of 1MPa; d. Stabilize the pressure for 0.5 hours, collect the temperature and pressure values ​​of the tested part, and compare the collected temperature and pressure values ​​with the rated temperature and rated pressure. The temperature fluctuation is at -11℃- Within +11°C, if the pressure change is less than 5% of t...

Embodiment 2

[0023] A detection process of a well control product and a wellhead device in the state of a high-temperature gas medium, including a. installing the detected part on the detection device, and then connecting one end of the detected part such as a control valve with an air compressor unit; b. opening The heater of the detection device heats the air temperature in the inner chamber of the tested part to the rated high temperature of 121 °C, and uses the computer control system to maintain the temperature at the rated temperature; c. Turn on the air compressor unit to pressurize the tested part to the rated temperature. Pressure 140MPa; d. Stabilize the pressure for 2 hours, collect the temperature and pressure values ​​of the tested parts, and compare the collected temperature and pressure values ​​with the rated temperature and rated pressure. The temperature fluctuation is within -11℃-+11℃, and the pressure changes If it is less than 5% of the rated pressure or 3.45MPa, it is ...

Embodiment 3

[0025] A detection process of a well control product and a wellhead device in the state of a high-temperature gas medium, including a. installing the detected part on the detection device, and then connecting one end of the detected part such as a control valve with an air compressor unit; b. opening The heater of the detection device heats the air temperature in the inner chamber of the tested piece to the rated high temperature of 80°C, and uses the computer control system to keep the temperature at the rated temperature value; c. Turn on the air compressor unit to pressurize the tested piece to the rated temperature. Pressure 50MPa; d. Stabilize the pressure for 0.5-2 hours, collect the temperature and pressure values ​​of the tested parts, and compare the collected temperature and pressure values ​​with the rated temperature and rated pressure. The temperature fluctuation is within -11°C-+11°C. If the pressure change is less than 5% of the rated pressure or 3.45MPa, it is j...

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Abstract

The invention discloses a detection technology for well control products and wellhead devices in conditions with high-temperature gaseous medium, comprising steps as follows: heating and stabilizing the air temperature of an inside cavity for measured objects to a rated high temperature of 60 DEG to 121 DEG; pressurizing a measured object to a rated working pressure of 1 to 140 MPa and stabilizing the pressure for 0.5 to 2 hours, collecting the temperature and pressure values of the measured object, deciding whether the quality and performance of the measured object is qualified according to fluctuations of the temperature and pressure values. Through pressure testing in high-temperature gaseous medium and increasing the temperature of the measured object, the invention can sufficiently simulate the sealability of the measured object in high environment temperature and gaseous medium to simulate the practical working condition to decide whether the quality and performance of the measured object meets the requirements of the site use.

Description

technical field [0001] The invention relates to a detection method of petroleum drilling and production equipment in a high-temperature gas medium, in particular to a detection process of a well control product and a wellhead device in a high-temperature gas medium state. Background technique [0002] In the prior art, during the construction of oil and gas drilling projects, well control products and wellhead devices are operating in vibration every day, and are also subjected to various temperatures and pressures, so their performance is constantly changing. In order to ensure safe drilling Requirements, according to regulations, well control products and wellhead devices must be tested for performance after a period of use. At present, such testing not only consumes a lot of time, but also can only be carried out simply on the pressure bearing capacity of well control products and wellhead devices. However, the quality and performance of well control products and wellhead...

Claims

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Application Information

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IPC IPC(8): G01M3/26G01M19/00G01M99/00
Inventor 唐顺东张斌张祥来江雨篱杨学峰曹厉杰曾莲
Owner BC P INC CHINA NAT PETROLEUM CORP
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