An air tightness detection device applied to casing
A technology of air tightness detection and detection device, which is applied in the direction of using liquid/vacuum for liquid tightness measurement, etc., can solve problems such as low sealing reliability, and achieve the effect of enhancing sealing performance
Active Publication Date: 2022-02-01
YANAN JIASHENG PETROLEUM MACHINERY
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Problems solved by technology
In the above technical solution, the air source rushes air into the air bag through the air channel, and the air bag inflates to seal between the cylinder body and the casing, and then rushes the detection gas into the inner cavity of the cylinder between the two air bags through the air hole, The monitoring part detects whether the detection gas leaks, and the control part controls the gas source to realize the detection of the airtightness of the casing; however, the inflated air bag is used to seal the cylinder body and the casing, and its sealing reliability too low
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[0024] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or e...
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The invention relates to an air tightness detection device for casing, which is characterized in that it comprises: a gas source for injecting detection gas into the detection device. A detection unit, the detection unit includes a detection cylinder and a ring-shaped soft sealing ring arranged at both ends of the detection cylinder, both ends of the detection cylinder are extended toward its axis and provided with flanging, and the soft sealing ring is Adsorption grooves are arranged close to the flange and the oil pipe side, the detection cylinder is provided with a sealing air hole that communicates with the absorption groove, the detection cylinder is provided with a detection air hole that communicates with the detection cylinder, and the software seal A squeezing device is arranged between the ring and the detection cylinder, the sealing air hole is connected with a vacuum device, and the detection air hole is connected with the gas source; a monitoring device is used to detect whether the detection gas in the detection cylinder leaks; The control device is used to control the on-off of the detection gas; the application has the effect of improving the sealing between the detection device and the casing.
Description
technical field [0001] The invention belongs to the technical field of oil pipe airtightness detection equipment, and in particular relates to an airtightness detection device applied to casing pipes. Background technique [0002] my country's average annual oil consumption is as high as hundreds of millions of tons, but the oil extraction process is complex and requires a high safety factor. And with the continuous promotion of deep well and horizontal well exploration and development technology, as well as the large-scale development of natural gas and gas storage, the sealing requirements for oil and casing are getting higher and higher. In order to ensure the sealing of the oil casing in the well, especially some high-pressure gas wells, H2S wells, CO2 wells, gas injection wells or wells in densely populated areas, gas storage wells, etc. The tightness of the oil casing is particularly important. [0003] Oil casing is the most widely used pipe in oil production. The o...
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IPC IPC(8): G01M3/02
CPCG01M3/02
Inventor 苏忠贵苏小东黄岩岗秦进尚峰李亮
Owner YANAN JIASHENG PETROLEUM MACHINERY