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

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...

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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

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