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Device for tracking and positioning rubber plug through sonar

A tracking and positioning, sonar technology, applied in the direction of measurement device, sound wave re-radiation, utilization of re-radiation, etc., can solve the problem of inability to display data or graphics, inability to specifically reflect and control the cementing process, and inability to display the real-time position of rubber plugs and other problems, to achieve the effect of improving the success rate of cementing and reducing the complexity of the downhole

Inactive Publication Date: 2014-07-09
CNPC SICHUAN GASOLINEEUM GEOPHYSICAL PROSPECTING ENG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, the judgment of whether the cementing plug is in place has been judged by experience. Judgments are made by observing the pressure of the pipe string, listening to the sound of bumping pressure, and watching the flow rate. These judgments are all non-data-based indirect information expressions , can not perform intuitive data or graphic display, and cannot display the real-time position of the rubber plug
Due to the different well conditions on site, these judgment methods may lose their effect when there is an abnormality in the downhole, and they cannot help the construction and technical personnel to analyze and solve problems and make timely judgments, resulting in various problems in cementing. A major bottleneck, unable to specifically reflect and control the cementing process

Method used

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  • Device for tracking and positioning rubber plug through sonar

Examples

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Comparison scheme
Effect test

Embodiment 1

[0014] A sonar tracking and positioning rubber stopper device, such as figure 1 As shown, it includes a rubber plug 1, and also includes a sonar generation and data processing system 3. The sonar matrix 2 composed of a plurality of underwater acoustic transducers is installed on the rubber plug 1, and the sonar matrix 2 and the sonar generation and the data processing system 3 are electrically connected, and the sonar generating and data processing system 3 is installed at the wellhead.

[0015] The sonar generating and data processing system 3 at the wellhead can communicate with the sonar array 2 on the rubber plug 1 for real-time signal transmission and exchange, and after data processing, it can produce intuitive data and graphic display, and the technicians at the wellhead can The data is judged, and the position and motion state of the rubber plug 1 are obtained.

Embodiment 2

[0017] The above-mentioned sonar generation and data processing system 3 includes a signal source 4, a signal transceiver 5, a data processor 6 and a display device 7, the sonar matrix 2 and the signal transceiver 5 are connected by a sonar signal, and the signal The transceiver 5 is electrically connected to the signal source 4 , the signal source 4 is electrically connected to the data processor 6 , and the data processor 6 is electrically connected to the display device 7 .

[0018] Such as figure 1 As shown, the data processor 6 first sends a certain electrical signal to the signal source 4 as required, and the signal source 4 transmits the signal to the sonar array 2 through the signal transceiver 5, and generates a change signal under the action of the sonar array 2 and transmits the signal to the signal source 4. Give back to the signal transceiver 5, the signal transceiver 5 transmits the signal to the data processor 6 through the signal source 4, and the data processo...

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Abstract

The invention relates to a complete unit used for tracking and positioning a rubber plug through a sonar system in the petroleum well cementation process, in particular to a device for tracking and positioning the rubber plug through sonar. The device comprises the rubber plug and a sonar generating and data processing system. The rubber plug is provided with a sonar array composed of a plurality of underwater acoustic transducers, wherein the sonar array is connected with the sonar generating and data processing system through sonar signals. Through the sonar positioning technology, the position of the rubber plug in a well, the distance between the rubber plug and a wellhead and the motion state of the rubber plug can be displayed by a data transmitting and processing system in real time, construction is facilitated, a technician is assisted in analyzing and solving problems and judging well conditions in time, the well cementation success rate can be greatly increased, and the number of down hole problems is reduced.

Description

technical field [0001] The invention is a complete set of device for tracking and locating the position of the rubber plug in the oil well cementing process through a sonar system, specifically a sonar tracking and locating rubber plug device. Background technique [0002] In the process of cementing and displacement, rubber plugs must be used to separate and bump the cement slurry and mud. For a long time, the judgment of whether the cementing plug is in place has been judged by experience. Judgments are made by observing the pressure of the pipe string, listening to the sound of bumping pressure, and watching the flow rate. These judgments are all non-data-based indirect information expressions , cannot perform intuitive data or graphic display, and cannot display the real-time position of the rubber stopper. Due to the different well conditions on site, these judgment methods may lose their effect when there is an abnormality in the downhole, and they cannot help the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/06G01S15/88
CPCE21B47/095
Inventor 高果成王文斌陈宁刘小利刘志雄沈明华王兴
Owner CNPC SICHUAN GASOLINEEUM GEOPHYSICAL PROSPECTING ENG TECH RES INST
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