Device and method for acquiring in-well environmental parameters based on DAS

Abstract

The invention discloses a device and a method for acquiring in-well environmental parameters based on a DAS. The device comprises an aboveground DAS instrument module, a power supply module, an environmental parameter sensor module, a vibration device module and a control circuit module, wherein the environmental parameter sensor module, the vibration device module and the control circuit module are in circuit connection with the power supply module; the environmental parameter sensor module, the control circuit module, the vibration device module and the aboveground DAS instrument module are in communication connection in sequence; the power supply module provides energy for all the modules; the environmental parameter sensor module collects the in-well environmental parameters; the control circuit module generates corresponding control signals according to the environmental parameters and controls the vibration device module to send out vibration signals; and the aboveground DAS instrument module demodulates the vibration signals and then obtains the underground environmental parameters. According to the device and the method, in order to solve the problem that in the prior art, when a traditional electronic sensor is adopted in a well, cables are needed for power supply and signal transmission, the wireless electronic sensor and a DAS system are combined to achieve in-well environmental parameter measurement, the number of the used in-well cables is reduced, and the oil and gas exploitation cost is reduced.

Description

technical field [0001] The invention relates to the field of acquisition of environmental parameters in wells, in particular to a DAS-based acquisition device and method for environmental parameters in wells. Background technique [0002] With the increase of the exploitation time of my country's oil and gas resources, the difficulty of exploitation gradually increases, and the environment in the well is more complicated. In the process of oil and gas exploration and production, the environmental parameters (temperature, pressure, etc.) in the well are one of the focuses of engineers, which provide an important basis for judging the complex environment in the well. [0003] It is not easy to implement wireless signal transmission in the application of traditional electronic sensors in oil wells. Cables are required for power supply and signal transmission. When the number of sensors is large, the number of cables also increases, occupying space in the well and increasing oil...

AI Technical Summary

Problems solved by technology

[0003] It is not easy to implement wireless signal transmission in the application of traditional electronic sensors in oil wells. Cables are required for power supply and signal transmission. When the number of sensors is large, the number of cables also increases, occupying space in the well and increasing oil and gas production. Mining Difficulty and Cost

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