Wireless remote real-time testing system for water injection well

Abstract

The invention discloses a wireless remote real-time testing system for a water injection well. Remote real-time monitoring of downhole water injection conditions of the water injection well in an office environment, remote downhole automatic sealing check and testing and adjustment of water injection flow in all sections can be realized, and stratum mouth front pressure and back pressure can be monitored in real time. The system comprises an intelligent downhole water distribution tubular column, a ground control part and a remote service part, wherein the remote service part comprises a computer and a server connected with the computer, the server is connected with a first wireless transceiver, the first wireless transceiver is connected with a second wireless transceiver in a wireless mode, and the second wireless transceiver is connected with a controller in the ground control part; the intelligent downhole water distribution tubular column comprises an intelligent downhole water distributor and a cable-passing well-washable packer which are arranged on an intelligent downhole water distribution tubular column body, the intelligent downhole water distributor is connected with the controller through a cable, and a vortex flow meter and a pressure sensor are arranged on the intelligent downhole water distributor. The wireless remote real-time testing system is convenient to operate and use, high in practicability and remarkable in effect.

Description

technical field [0001] The invention belongs to the technical field of oilfield water injection, and relates to remote debugging equipment for oilfield water injection wells, in particular to a wireless remote real-time debugging system for water injection wells. Background technique [0002] At present, the remote control system of water injection wells in oilfields monitors the water injection system above the ground, and transmits each detection signal to the monitoring center through the GPRS network, real-time detection of water injection flow, flow rate, main line pressure and regulation of the total injection volume; but for The field of remote monitoring of the production status of the water injection in the subsurface section of the water injection well is still blank; at present, the water injection in the subsection section of the water injection well requires test workers to operate at the well site. There are two methods of measurement and adjustment: one is to p...

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Problems solved by technology

[0002] At present, the remote control system of water injection wells in oilfields monitors the water injection system above the ground, and transmits each detection signal to the monitoring center through the GPRS network, real-time detection of water injection flow, flow rate, main line pressure and regulation of the total injection volume; but for The field of remote monitoring of the production status of the water injection in the subsurface section of the water injection well is still blank; at present, the water injection in the subsection section of the water injection well requires test workers to operate at the well site. There are two methods of measurement and adjustment: one is to pull out through the puller The plug in the eccentric water distributor, and replace the ceramic nozzle to achieve water volume control, and use the storage type flowmeter to test the injection flow of each layer section. The disadvantage is that when the number of subdivision stages increases, the injection volume of each layer is small , the test needs to be repeatedly debugged, the test success rate is low and the workload is large and time-consuming; the other is to install the electronic control instrument with a drive motor, and adjust the adjustable plug installed in the underground to realize the water volume control. The disadvantage is that it needs Operators go to the well site to connect the wellhead cable, power supply equipment and ground control box before they can perform measurement and adjustment, which affects the test efficiency, and is affected by working hours and weather, it is impossible to monitor and control the downhole data in time, which is not conducive to the management personnel to clarify the formation It is difficult to realize real-time monitoring for wells prone to abnormalities and fixed-point wells for underground dynamic monitoring

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