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Oil bushing air-tightness detection device and oil bushing air-tightness detection method

A detection device, a technology for oil casing, which is applied in the use of liquid/vacuum for liquid tightness measurement, by detecting the appearance of fluid at the leak point, etc. Increase economic and administrative costs and other issues

Inactive Publication Date: 2013-08-07
SOUTHWEST PETROLEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the gas-tightness detection methods of downhole tubing are still very weak, and the gas-tightness of tubing and casing is mainly tested through hydrostatic pressure sealing performance test experiments. These methods mainly rely on the work experience and operational sensitivity of

Method used

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  • Oil bushing air-tightness detection device and oil bushing air-tightness detection method
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  • Oil bushing air-tightness detection device and oil bushing air-tightness detection method

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Embodiment Construction

[0039] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0040] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0041] Such as figure 1 , figure 2 and image 3 As shown, the oil-casing airtightness detection device of the present invention includes an upper joint 42, a central pipe 41 and a lower joint 21, the upper end of the central pipe 41 is connected with the upper joint 42 for communication, and the lower end of the central pipe 41 is connected with a The lower joint 21 is blocked, and a side hole 12 is provided on the side wall of the central...

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Abstract

The invention discloses an oil bushing air-tightness detection device and an oil bushing air-tightness detection method, which belong to the technical field of the detection of an oil bushing. The upper end of a central pipe of a lower intermittence compensation mechanism is in communication connection with an upper connector, the lower end of the central pipe of the lower intermittence compensation mechanism is sealed through a lower connector, the side wall of the middle part of the central pipe is provided with a side hole, a connection sleeve is respectively sleeved outside an upper compression piston mechanism and a lower compression piston mechanism, so that a gap leveled to the side hole is arranged between the upper compression piston mechanism and the lower compression piston mechanism, the upper end of the central pipe is provided with an adjusting nut, an upper rubber sleeve is arranged between the upper compression piston mechanism and the adjusting nut, and a lower rubber sleeve is arranged between the lower compression piston mechanism and the lower connector. According to the oil bushing air-tightness detection device and detection method, the air tightness of the oil bushing can be conveniently and rapidly detected, and a novel detection way is provided for more accurately judging the air tightness of the oil bushing.

Description

technical field [0001] The invention relates to the technical field of oil and casing sealing detection technology, in particular to a detection technology for threaded air tightness of oil and casing pipes in oil and gas exploration and development. Background technique [0002] With the continuous promotion of exploration and development technologies such as deep wells and horizontal wells, oil and gas exploration and development are gradually expanding to deeper reservoirs. During the production process, the wellhead pressure has exceeded 50MPa, and some wellhead pressures have even reached nearly 100MPa. For safe production, various oil and gas fields have higher and higher requirements for the tightness of oil and casing used on site. [0003] Due to factors such as processing errors, bumps and micro-corrosion during transportation or operation, selection and use of sealing grease, rotation of the make-up torque value range, cleaning of threads and sealing surfaces, etc...

Claims

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Application Information

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IPC IPC(8): G01M3/22
Inventor 王国荣胡刚袁光杰申瑞臣黄岗夏焱
Owner SOUTHWEST PETROLEUM UNIV
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