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

Fishing tool and method for electric hydraulic type throttler

A technology of fishing tools and chokes, which is applied in the field of electro-hydraulic choke fishing tools, can solve the problems of low success rate of fishing measures and high cost of chokes, so as to improve the success rate of fishing, reduce pump pressure, and ensure reliable operation. Low-cost salvage technology and the effect of economic requirements

Active Publication Date: 2020-10-02
PETROCHINA CO LTD
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides an electro-hydraulic choke fishing tool and its fishing method. The first purpose is to solve the problem of low success rate in the existing choke fishing measures; The device has the problem of high cost

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
  • Fishing tool and method for electric hydraulic type throttler
  • Fishing tool and method for electric hydraulic type throttler

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0048] The first embodiment of the present invention relates to an electro-hydraulic choke fishing tool, such as figure 1 and figure 2As shown, it includes a casing 5. The top of the casing 5 is an upper joint 1 for cables to pass through. The casing 5 is packaged with an electronic sub-section 2, a hydraulic drive sub-section 3 and a self-resetting fishing spear sub-section 4 in sequence from top to bottom. The electronic sub-joint 2 is electrically connected with the hydraulic drive sub-joint 3, and the hydraulic-drive sub-joint 3 pushes the self-resetting fishing spear sub-joint 4 to grab the restrictor through hydraulic oil.

[0049] The working process of the electro-hydraulic choke fishing tool is as follows:

[0050] Inject hydraulic oil into the fishing tool of the electro-hydraulic choke, and the hydraulic oil is filled with the hydraulic drive nipple 3; use the cable to pass through the upper joint 1 and electrically connect the electronic nipple 2, and lower the f...

no. 2 approach

[0054] This embodiment relates to an electro-hydraulic throttling fishing tool, such as figure 1 and figure 2 As shown, it includes a casing 5. The top of the casing 5 is an upper joint 1 for cables to pass through. The casing 5 is packaged with an electronic sub-section 2, a hydraulic drive sub-section 3 and a self-resetting fishing spear sub-section 4 in sequence from top to bottom. The electronic sub-joint 2 is electrically connected with the hydraulic drive sub-joint 3, and the hydraulic-drive sub-joint 3 pushes the self-resetting fishing spear sub-joint 4 to grab the restrictor through hydraulic oil.

[0055] The hydraulic drive nipple 3 includes the connecting joint 3-1, the hydraulic balance mechanism 3-2, the hydraulic power mechanism 3-3 and the driving cylinder mechanism 3-4 from top to bottom, and the lower end of the electronic nipple 2 and the connecting joint 3- 1 Sealed plug connection, the hydraulic balance mechanism 3-2, the hydraulic power mechanism 3-3 and...

no. 3 approach

[0063] This embodiment relates to an electro-hydraulic throttling fishing tool, such as figure 1 and figure 2 As shown, it includes a casing 5. The top of the casing 5 is an upper joint 1 for cables to pass through. The casing 5 is packaged with an electronic sub-section 2, a hydraulic drive sub-section 3 and a self-resetting fishing spear sub-section 4 in sequence from top to bottom. The electronic sub-joint 2 is electrically connected with the hydraulic drive sub-joint 3, and the hydraulic-drive sub-joint 3 pushes the self-resetting fishing spear sub-joint 4 to grab the restrictor through hydraulic oil.

[0064] The hydraulic drive nipple 3 includes the connecting joint 3-1, the hydraulic balance mechanism 3-2, the hydraulic power mechanism 3-3 and the driving cylinder mechanism 3-4 from top to bottom, and the lower end of the electronic nipple 2 and the connecting joint 3- 1 Sealed plug connection, the hydraulic balance mechanism 3-2, the hydraulic power mechanism 3-3 and...

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 provides a fishing tool and method for an electric hydraulic type throttler. The fishing tool comprises an outer shell. An upper connector for a cable to penetrate through is disposed atthe top end of the outer shell. An electronic nipple, a hydraulic drive nipple and a self-reset fishing spear nipple are encapsulated in the outer shell sequentially from top to bottom. The electronic nipple is electrically connected with the hydraulic drive nipple. The hydraulic drive nipple pushes the self-reset finishing spear nipple by hydraulic oil to grab the throttler. A motor is controlled by a ground controller to work and drives a plunger pump to push a push rod, and the push rod drives a fishing head until the throttle is unlocked, so that a fishing success rate of the downhole throttler is effectively increased, and the requirements for a safe, reliable and low-cost fishing technology and economical performance in the fishing process of the downhole throttler in a gas field can be met.

Description

technical field [0001] The invention belongs to the field of downhole operation tools, and in particular relates to an electrohydraulic choke fishing tool and a fishing method thereof. Background technique [0002] Downhole throttling technology has important functions such as throttling and pressure reduction, cost reduction, and simplification of wellhead process. Its key tool, the throttling device, has been widely used in the Sulige Gas Field as an important development means to reduce costs and increase efficiency. [0003] However, due to downhole sand production, scaling, corrosion and other reasons, some wells have problems such as high difficulty and low success rate in salvaging downhole chokes with steel wires, and failure to fish chokes will seriously affect the gas wells in the later stage of production. Velocity control, plunger gas lift and other drainage and gas recovery measures may even lead to the failure of normal production of the gas well. Measures such...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E21B31/20
CPCE21B31/20
Inventor 王嘉鑫王效明巨亚锋马得华李旭梅张家富张安康陈晓丽刘春斌黄平
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