Hydraulic automatic blowout control controller

An automatic controller and hydraulic technology, applied in wellbore/well components, earthwork drilling, sealing/isolation, etc., can solve problems such as complex operation process of blowout prevention tools, impact on production efficiency, surface pollution, etc., to ensure The effect of green and environmental protection operation construction, efficient well cleaning, and prevention of energy waste

Active Publication Date: 2016-03-23
LIAONING XINHUA INSTR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the oil production wells in the oil field are engaged in oil production and workover operations, due to the excessive downhole pressure of the oil production wells, crude oil is ejected from the wellhead, causing surface pollution and energy waste. The original production method cannot solve the problem of crude oil ejection well. For this reason, oil production wells use blowout prevention tools, but the operation process of existing blowout prevention tools is relatively complicated, which affects production efficiency

Method used

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  • Hydraulic automatic blowout control controller
  • Hydraulic automatic blowout control controller
  • Hydraulic automatic blowout control controller

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Embodiment Construction

[0012] See Figure 1-4 , the specific structure of the present invention is as follows: the external thread of the lower end of the upper joint 1 is connected with the internal thread of the upper end of the outer sleeve 3 and sealed by an O-shaped rubber ring, the piston 4 is housed in the outer sleeve 3, and the piston 4 and the circumferential surface of the outer sleeve 3 are provided with Corresponding to a plurality of inclined holes I, F, the inclined hole I on the outer sleeve 3 communicates with the inclined hole F on the piston 4; The lower end of the piston 4 is connected to the piston plug 6 through threads, and there are two liquid inlet holes E on the piston plug 6. The polytetrafluoro bellows 5 is connected to the upper end of the piston plug 6, and the piston plug 6 and the transmission shaft 7 are connected by screws. 17 connection; the transmission shaft 7 is fitted with a bellows 9 to form an air cavity D, the upper end of the bellows is sealed and connected...

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Abstract

The invention provides a hydraulic automatic blowout control controller which comprises an upper joint, an outer casing pipe, a piston, a connection sleeve, a sealing sleeve and a tailstock. The hydraulic automatic blowout control controller is characterized in that the circumferential face of the piston and the circumferential face of the outer casing pipe are provided with a plurality of corresponding inclined holes; the lower end of the piston is connected with a piston plug provided with a liquid inlet through a thread, a polytetrafluoroethylene corrugated pipe is connected with the piston plug, and the piston plug is connected with a transmission shaft; the transmission shaft is sleeved with the corrugated pipe and forms an air cavity, the corrugated pipe is in sealing connection with the transmission shaft, and one end of an opening of the corrugated pipe is fixedly connected with the connection sleeve; the lower end of the transmission shaft is connected with s spring seat, the spring seat and an adjusting rod are sleeved with springs, the lower end of the adjusting rod is provided with a key, and the adjusting sleeve is internally provided with a key groove.

Description

technical field [0001] The invention belongs to a blowout prevention device for an oil production well in an oil field, in particular to a hydraulic blowout prevention automatic controller, specifically a downhole switch for layered oil production. Background technique [0002] When the oil production wells in the oil field are engaged in oil production and workover operations, due to the excessive downhole pressure of the oil production wells, crude oil is ejected from the wellhead, causing surface pollution and energy waste. The original production method cannot solve the problem of crude oil ejection well. Therefore, oil production wells use blowout prevention tools, but the operation process of existing blowout prevention tools is relatively complicated, which affects production efficiency. Contents of the invention [0003] The purpose of the present invention is to provide a hydraulic blowout prevention automatic controller to solve the above problems, which can cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06
CPCE21B33/06
Inventor 梁伟成刘宝王安平
Owner LIAONING XINHUA INSTR CO LTD
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