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A hydraulically adjustable time-delay opening device

A technology of hydraulic pressure and hydraulic cavity, applied in the field of hydraulic adjustable time delay opening device, can solve the problems such as the delay can not be realized

Active Publication Date: 2020-12-01
WUHUA ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is: aiming at the problem that the current perforating devices for perforating oil and gas wells are all instantaneous perforation, and cannot be delayed for a certain period of time

Method used

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  • A hydraulically adjustable time-delay opening device
  • A hydraulically adjustable time-delay opening device
  • A hydraulically adjustable time-delay opening device

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Embodiment Construction

[0023] see figure 1 — Image 6 , a hydraulic adjustable time-delay opening device The device consists of an upper body 1, a first sealing ring 2, a piston ring 3, a pin 4, an upper hydraulic chamber 5, a sliding sleeve 6, a second sealing ring 7, and a pressure hole 8 , delay hole 9, lower hydraulic chamber 10, circulation hole 11, lower body 12, sealing ring 13, sealing ring 14, sealing ring 15, sealing ring 16, etc. In the construction of oil and gas wells, it realizes the function of delaying perforation in the perforation construction process.

[0024] The upper body 1 and the lower body 12 are connected by a threaded sealing structure, and the sliding sleeve 6 is fixedly assembled with the piston ring 3 through the pin 4 , and then integrally assembled in the center of the upper body 1 and the lower body 12 . Upper hydraulic chamber 5 dresses hydraulic oil capacity and is not greater than 3 / 4 of upper hydraulic chamber volume, and the volume of lower hydraulic chamber 1...

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Abstract

The invention discloses a hydraulically adjustable time-delay perforating device, which is applied to the perforation construction process that needs to be delayed for a certain period of time before perforating. By designing two independently sealed hydraulic chambers, the liquid in the upper hydraulic chamber flows through the delay hole to the lower hydraulic chamber under the hydraulic pressure in the central tube, so as to achieve the purpose of delay opening. At the same time, the delay hole of the device The diameter can be set during processing to realize the adjustable length of delay; on the other hand, the amount of liquid in the upper hydraulic chamber can be adjusted to adjust the length of delay when the device is assembled. The opening function of the device realizes the communication between the inside of the tubing and the annulus of the oil and gas well.

Description

technical field [0001] The invention belongs to the field of oil and gas well completion perforation operations, in particular to the technology for realizing the communication between the oil pipe and the annular casing in the oil and gas well perforation technology, and particularly relates to a hydraulically adjustable time-delay perforating device. Background technique [0002] The hydraulic perforating device is a device often used in perforating oil and gas wells. This device realizes the perforating gun string transported by the tubing to open holes during underground construction, and completes the opening of the circulation channel between the tubing and the annular casing, realizing Technological requirements for opening holes in perforation construction. For conventional perforation construction, the purpose of perforation is realized instantly after the oil pipe is pressurized. For the pressure value, the perforation and other processes are completed first, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/18
CPCE21B7/18
Inventor 刘正彦肖勇常昕张虎刘帅王雪艳罗兴平闵杰
Owner WUHUA ENERGY TECH CO LTD
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