Pressure testing system and pressure testing method

A pressure test and hydraulic cylinder technology, which is applied in the direction of measuring the increase and decrease rate of the fluid, and using the liquid/vacuum degree to measure the liquid tightness, etc., can solve the problems of poor effect and difficult detection of sealing effect, and achieve simple structure, Easy to operate, fast and easy to use

Inactive Publication Date: 2012-01-25
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a pressure testing system and a pressure testing method, so as to overcome the defects that the pressure testing machine is difficult to detect the sealing effect of the pressure testing tool and the effect is not good in the prior art

Method used

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  • Pressure testing system and pressure testing method
  • Pressure testing system and pressure testing method
  • Pressure testing system and pressure testing method

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Embodiment Construction

[0031] The invention relates to a sealing device, in particular to a nylon end face sealing device for a pressure test system.

[0032] see Figure 1 to Figure 3 , a kind of pressure test system that the present invention relates to, comprises pressure test tool 4, also comprises solid plug 1, hollow head 2 and nylon packing 3, wherein, one end of solid plug 1 is connected with output end of pressure test tool 4 , the other end is a solid joint 101; one end of the hollow head 2 is connected to the input end of the pressure test tool 4, and the other end is a hollow joint 201, and a liquid hole 202 is provided in the middle of the hollow head 2; one end of the nylon packing 3 can be connected to the hydraulic pressure The cylinder is connected, and the other end is a sealing end surface that can be matched with the hollow joint 201 on the hollow head 2 . The nylon packing 3 is provided with an inner hole 301 that can communicate with the liquid hole 202 .

[0033] The diameter...

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Abstract

The invention relates to oil testing of petroleum, especially to a pressure testing system and a pressure testing method. The pressure testing system comprises a pressure testing tool; and the system is characterized in that: the system also comprises a solid choke plug, a hollow end socket and a nylon packing; one end of the solid choke plug is connected with an output end of the pressure tool and the other end of the solid choke plug is a solid joint; one end of the hollow end socket is connected with an input end of the pressure tool and the other end of the hollow end socket is a hollow joint; a liquid passing hole is arranged in the middle of the hollow end socket; one end of the nylon packing is capable of being connected with a hydraulic cylinder and the other end of the nylon packing is a sealed end face that is cooperatively docked with the hollow joint; and an inner bore that is communicated with the liquid passing hole is arranged at the nylon packing. In the prior art, it is difficult to carry out detection on a sealing effect of a pressure testing tool by a pressure testing machine and the detection effect is not good; however, the above-mentioned defects can be overcome with utilization of the pressure testing system and the pressure testing method provided in the invention.

Description

technical field [0001] The invention relates to petroleum oil testing, in particular to a pressure testing system and a pressure testing method. Background technique [0002] In oil testing operations, downhole tools are necessary devices, and different types of tools need to be selected according to different working conditions. For oil testing, fracturing, and acidizing processes, the types of tools used are similar, with a length of about 1m. For pipe fittings with an outer diameter of ∮70mm—∮150mm, all parts are connected by threads. During the working process, the downhole tools generally have to withstand the pressure of 20-30MPa and cannot fail. Therefore, after the downhole tools are assembled, the hydraulic sealing test must be carried out, and the pressure must be stabilized for a certain period of time to detect whether the downhole tools have leakage. , to ensure the reliability of downhole tools in actual use. [0003] To pressurize a tool, it is necessary to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26
Inventor 苏敏文龙庆韩虎成邓小强张波许建伟张文宫娜娜隆世明杜加玉李景斌
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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