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Water injection well pressure pulse communication device, system and method for dynamic pressure detection

A technology of dynamic pressure and pressure pulse, which is applied in the directions of measurement, earthwork drilling and production, wellbore/well components, etc. It can solve problems affecting communication accuracy, oil well production decline, and small pressure pulse amplitude, etc.

Active Publication Date: 2020-06-12
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]However, due to factors such as the heterogeneity of the oil layer and the change of the water absorption capacity of the formation, it is difficult to meet the needs of fine layered water injection in the oilfield. Therefore, in order to avoid the above problems, it is very important to realize the communication between the surface and the downhole to obtain parameter information such as downhole pressure
[0004]However, due to the characteristics of small fluid flow diameter and small flow rate in the water injection process, the pressure pulse amplitude generated is small, and the existing surface and downhole information transmission devices do not It is easy to detect the above-mentioned pressure pulse, and it is easy to cause the loss of measurement data and other phenomena, which affects the accuracy of communication, thereby reducing the user experience

Method used

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  • Water injection well pressure pulse communication device, system and method for dynamic pressure detection
  • Water injection well pressure pulse communication device, system and method for dynamic pressure detection
  • Water injection well pressure pulse communication device, system and method for dynamic pressure detection

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Embodiment 1

[0031] An embodiment of the present invention provides a water injection well pressure pulse communication device for dynamic pressure detection, such as figure 1Shown is a schematic structural diagram of a water injection well pressure pulse communication device for dynamic pressure detection. The instrument includes a first piezoelectric dynamic pressure sensor 104 and a single-chip microcomputer 105 connected by communication, and the data processing module includes a second piezoelectric dynamic pressure sensor 106 and a coupler 107 connected by communication, and the first pulse generator 100 is also connected to the first pressure sensor. The electric dynamic pressure sensor 104 is connected, the second pulse generator 102 is also connected with the single-chip microcomputer 105 and the second piezoelectric dynamic pressure sensor 106, and the first pulse generator 100 and the coupler 107 are also connected with the upper computer, wherein, the first The pulse generator ...

Embodiment 2

[0043] On the basis of the above embodiments, the embodiment of the present invention also provides a water injection well pressure pulse communication system for dynamic pressure detection, such as image 3 A schematic structural diagram of a water injection well pressure pulse communication system for dynamic pressure detection is shown, as shown in image 3 As shown, the water injection well pressure pulse communication system 300 for dynamic pressure detection includes the above-mentioned water injection well pressure pulse communication device 301 for dynamic pressure detection, and a host computer 302; wherein, the upper computer and the water injection well pressure pulse for dynamic pressure detection Communication device connection.

[0044] For ease of understanding, Figure 4 A schematic structural diagram showing another injection well pressure pulse communication system for dynamic pressure detection, as shown in Figure 4 As shown, the first pulse generator 100...

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Abstract

The invention provides a water injection well pressure pulse communication device, system and method for dynamic pressure detection, and relates to the technical field of pressure pulse communication.When a first pulse generator receives a control signal sent by an upper computer, the control signal is modulated into a negative pressure wave signal to be sent to a first piezoelectric dynamic pressure sensor through a channel of a water injection well, a single-chip microcomputer receives the negative pressure wave signal and then sends data information corresponding to the negative pressure wave signal to a second pulse generator, the second pulse generator adjusts the data information into a positive pressure wave signal and sends the positive pressure wave signal to a second piezoelectric dynamic pressure sensor, and a coupler decouples the positive pressure wave signal and sends the decoupled positive pressure wave signal to the upper computer to obtain data information. The signals can be received through the first piezoelectric type dynamic pressure sensor and the second piezoelectric type dynamic pressure sensor, the accuracy of signal transmission between the ground and anunderground place is effectively achieved, and then the use experience of a user is improved.

Description

technical field [0001] The invention relates to the technical field of pressure pulse communication, in particular to a water injection well pressure pulse communication device, system and method for dynamic pressure detection. Background technique [0002] After the oil field is put into production, as the production time increases, the energy of the oil layer itself will be continuously consumed, which will cause the pressure of the oil layer to drop continuously. The drop in oil layer pressure will lead to a large amount of degassing of underground crude oil and increase in viscosity, which will greatly reduce the output of the oil field. In order to maintain or increase the reservoir pressure and achieve high and stable oil production, water injection wells are required to inject water into the reservoir. [0003] However, due to the heterogeneity of the oil layer and the change of the water absorption capacity of the formation, it is difficult to meet the needs of fine ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/06E21B47/12E21B43/20
CPCE21B47/06E21B47/12E21B43/20
Inventor 华陈权阚京龙李彬姚汉秋
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)