RFID-based two-way communication intelligent testing and adjusting method and system for water injection/producing well

A two-way communication, water injection well technology, applied in wellbore/well components, measurement, production of fluids, etc., can solve the problems of large influence of wellbore diameter, inability to achieve two-way communication between surface and underground, and achieve low construction risk and ensure information reading. Take the effect of reliability and high control precision

Active Publication Date: 2022-08-02
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above-mentioned problems and defects in the prior art, the patent of the present invention proposes an RFID-based two-way communication intelligent measurement and adjustment method and system for water injection / oil production wells. Through the circuit design and structural design of the RFID electronic tag, it can Realize two-way stable communication between surface and downhole, effective monitoring of parameters such as downhole flow, pressure and temperature, and automatic control and correction of water distributor valve opening, which solves the problem of well deviation in the existing layered injection and production technology , The diameter of the wellbore has a great influence, especially in the harsh working conditions of metal pipes, saturated brine, mud, and high temperature in oil well mining, it is impossible to achieve two-way communication between the ground and the downhole, without manual intervention, easy to operate, and cost-effective

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
  • RFID-based two-way communication intelligent testing and adjusting method and system for water injection/producing well
  • RFID-based two-way communication intelligent testing and adjusting method and system for water injection/producing well
  • RFID-based two-way communication intelligent testing and adjusting method and system for water injection/producing well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like figure 1 As shown, the ground part of the water injection well includes an RFID ground control system 1, a hydraulic station 2, and an oil pipe string 3, a hydraulic control pipeline 4, a backwashing well lifting device 5, a sliding sleeve 6, and a top seal positioning seal are arranged in sequence from top to bottom. 7. Isolation packer 8, RFID water distributor 9, insert seal 10, water injection level I, water injection level II, and water injection level III respectively correspond to an RFID water distributor, the RFID water distributor 9 has built-in flow, pressure, temperature Other sensors, motors, wireless radio frequency modules and core processors are used to receive and process the instruction information carried by the spherical electronic tag 11, and then realize the adjustment of the valve opening through the motor, and also have the function of transmitting radio frequency signals. The control system 1 includes a PC equipped with ground controller op...

Embodiment 2

[0058] like Figure 4 As shown, the oil production well includes an RFID surface control system 1, a pump operating condition surface controller 17, a steel armored cable 18, and an isolation packer 8, a Y joint 19, a seat plug 20, and an oil drain set from top to bottom. 21. Electric pump 22, pump condition 23, top seal positioning seal 7, isolation packer 8, RFID dispenser 24, insert seal 10, round plug 25, the pump condition 23 has a built-in radio frequency module and core processing The electric pump is connected to the ground controller 17 of the pump working condition through the steel armored cable 18, and a seating spherical surface is arranged below the seating plug 20, so that after oil recovery is resumed, the electric pump sucks the spherical electronic tag 11 to the seating plug 20. In the spherical surface, to avoid blocking the overflow channel of the oil drain 21, the RFID dispenser has built-in sensors such as flow, pressure and temperature, as well as a moto...

Embodiment 3

[0067] On the basis of Embodiment 1 and Embodiment 2, this embodiment further includes:

[0068] According to the parameter information such as flow rate, pressure and temperature fed back by the RFID water distributor 9, look up the numerical correspondence table in the database to determine the flow interference coefficient K of the spherical electronic tag and the electromagnetic interference coefficient P of the spherical electronic tag;

[0069] Wherein, the flow interference coefficient K is defined as the reciprocal of the ratio of the flow velocity of the spherical electronic tag in the corresponding downhole environment to the flow velocity in clean water under the same flow, pressure and temperature environment. The greater the interference of the flow of the spherical electronic label, the numerical correspondence table between the flow interference system K and the downhole environment is established by the finite element analysis method, and the numerical corresponde...

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

In a water injection well, an RFID water distributor is arranged in each water injection layer section, a PC (Personal Computer) is connected with an RFID ground control system, and the opening degree of a valve of the underground RFID water distributor and instruction information for reading underground parameters are written into a spherical electronic tag; the two spherical electronic tags with related instruction information are sequentially put into or pumped into a water injection well, the opening degree of a valve body of the RFID water distributor is adjusted, the spherical electronic tags are washed out in an inverse well washing mode, and information such as flow, pressure and temperature of the corresponding positions is collected when the spherical electronic tags pass through the RFID water distributor again; analyzing according to the collected data, correcting the opening data of the RFID water distributor valve body, and calculating an adjustment parameter instruction for the next adjustment; the spherical electronic tag is an ellipsoid, an adjustable counter weight is arranged in the spherical electronic tag, accurate control over the flow speed of the water injection / producing well, two-way communication between the ground and the underground and smooth recovery of the spherical electronic tag are achieved, operation is easy and convenient, and economical efficiency and high efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of water injection control for water injection and exploitation in oilfields, in particular to an RFID-based two-way communication intelligent measurement and adjustment method and system for water injection / oil production wells. The adjustment of the water injection volume of the RFID water distributor in each layer of the water well, or the adjustment of the liquid production volume of the RFID water distributor in each layer of the oil production well, as well as the accurate monitoring of the parameters such as the downhole flow, pressure and temperature, belong to the cableless layered injection and production method . Background technique [0002] Water flooding is an effective means to enhance oil recovery and maintain high and stable oil production in oilfield development. At present, the methods of downhole layered injection and production mainly include: the method of measuring and adjusting layer...

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): E21B43/00E21B43/20E21B43/14E21B47/00E21B47/06E21B47/07G06K7/10G06K19/077
CPCE21B43/00E21B43/20E21B43/14E21B47/00E21B47/06E21B47/07G06K7/10297G06K7/10316G06K19/07749
Inventor 左凯杨进徐东升
Owner CHINA UNIV OF PETROLEUM (BEIJING)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap