Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Blowout prevention device and method for oil well

A technology for blowout prevention devices and oil wells, which is applied in wellbore/well valve devices, earthwork drilling, wellbore/well components, etc. It can solve problems such as high safety risks, difficult operation, time-consuming and labor-intensive problems

Pending Publication Date: 2022-08-02
PETROCHINA CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This operation is time-consuming, labor-intensive, difficult to operate, and has a high safety risk, which brings higher risks to the operation and construction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Blowout prevention device and method for oil well
  • Blowout prevention device and method for oil well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0034] It should be noted that, in the process of describing the oil well blowout prevention device and method provided by the embodiments of the present application, the words "top", "bottom", "upper" and "lower" are figure 1 For reference, when the oil well blowout preventer or method provided by the embodiments of the present application is used in different scenarios, the meanings of "top", "bottom", "upper" and "lower" will also change accordingly.

[0035] The present application provides a method for running a liner under pressure in an oil well, due to the effect of the pressure in the well, the well fluid is uncontrollably sprayed out along the inner cavity of the oil pipe, causing environmental pollution, bringing about great hid...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an oil well blowout prevention device and method, and belongs to the field of oil exploitation. By means of the oil well blowout prevention device, inner blowout prevention in the tail pipe descending process can be achieved, and safe and efficient under-pressure operation is achieved in a time-saving and labor-saving mode. According to the operation method, an underground switch is connected to the bottommost tail pipe, and at the moment, the underground switch is turned off. After the tail pipes are put down, the oil well blowout preventer is installed on the uppermost tail pipe, the upper baffle of the oil well blowout preventer is pushed to move downwards, the upper baffle drives the valve element to move downwards to compress the elastic connecting piece to leave the valve seat, and at the moment, the blocking tool is in an open state. When an underground switch is opened and the union is detached through pressing of well killing fluid, under the combined action of the elastic connecting piece and well pressure, the valve element moves upwards to seal the valve seat, the oil well blowout prevention device is closed, and therefore blowout prevention in a pipe column is achieved, and safe and clean operation under pressure is achieved.

Description

technical field [0001] The present application relates to the field of petroleum exploitation, in particular to an oil well blowout preventer and method. Background technique [0002] In the process of oil well exploitation, in order to improve the operation efficiency, the way of oil well pressure operation is often adopted. [0003] When the oil well is under pressure for pump inspection construction, the method of running the liner is as follows: use a sealed spear to connect to the liner, run it into the well through the pressurized equipment, and close the annular blowout preventer or ram blowout preventer. Open the full-sealing ram of the blowout preventer, run the tail pipe below the full-sealing ram of the blowout preventer, close the safety slip to block the pipe string, and exit the sealing spear. Lift the sealing spear up to above the full-sealing ram of the blowout preventer, close the full-sealing ram of the blowout preventer, and bring out the sealing fishing ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E21B33/06E21B34/02
CPCE21B33/06E21B34/02
Inventor 张国宏高晓乐王群星彭军姜艳张广辉宫艳红纪智月
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com