A subdivided water dispenser

Abstract

The invention relates to a subdivision measurement adjustment water distributor in the technical field of oil extraction tools. The subdivision measurement adjustment water distributor comprises an upper outer pipe and an inner guide drum arranged in the upper outer pipe in a clearance mode, the lower end of the upper outer pipe is in sealed connection with a water distributing main body, the water distributing main body is provided with an axial partial hole communicated with an annular space on the upper side, a double-layer adjustable water nozzle is arranged in the axial partial hole and provided with an upper water distributing channel and a lower water distributing channel, the outer wall of the water distributing main body is provided with an upper water outlet communicated with the upper water distributing channel, the lower water distributing channel is communicated with the lower portion of the axial partial hole, the water distributing main body is provided with an upper water inlet and a lower water inlet corresponding a center channel, the lower end of the water distributing main body is in sealed connection with a lower outer pipe and an inner flow dividing pipe, a lower water annular space is formed between the lower outer pipe and the inner flow dividing pipe, and the lower portion of the axial partial hole of the water distributing main body is communicated with the lower water annular space. The lower portion of the lower outer pipe is in sealed connection with an anti-flowback base packer, the lower end of the anti-flowback base packer is in sealed connection with a lower joint, the lower joint is provided with a lower water outlet communicated with the lower water annular space, and an anti-backwater structure is arranged in the lower water outlet.

Description

technical field [0001] The invention relates to the technical field of oil production tools, in particular to a subdivision measuring and distributing water device for downhole subdivision water injection. Background technique [0002] At present, the layered water injection process in the oil field is developing towards intelligence. One is to install an adjustable water nozzle on the traditional water distributor, and use a cable + side-by-side tester to connect with the adjustable water nozzle. It is transmitted to the ground, and according to the injection volume of each layer, an instruction is issued to adjust the water nozzle. The advantage is that the existing tools, equipment and manpower are used, and the cost is low. The disadvantage is that it cannot meet the requirements of the water injection well in subdivided layers. For example, the patent number is 201320055951 The bridge-type concentric continuously adjustable water dispenser of .X belongs to the above-men...

AI Technical Summary

Problems solved by technology

[0002] At present, the layered water injection process in the oil field is developing towards intelligence. One is to install an adjustable water nozzle on the traditional water distributor, and use a cable + side-by-side tester to connect with the adjustable water nozzle. It is transmitted to the ground, and according to the injection volume of each layer, an instruction is issued to adjust the water nozzle. The advantage is that the existing tools, equipment and manpower are used, and the cost is low. The disadvantage is that it cannot meet the requirements of the water injection well in subdivided layers. For example, the patent number is 201320055951 .X's bridge-type concentric continuous adjustable water dispenser belongs to the above situation

The other is an intelligent water distributor, which has built-in adjustable water nozzle, micro-motor, power supply and control circuit, flow meter, pressure gauge and signal transceiver and other components. Measurement and adjustment instrument + short-distance (within 2m) wireless docking, downhole wireless transmission, etc., the advantage is that it is suitable for highly deviated wells, thin interbedded wells, etc., and does not require ground testing teams and equipment; the disadvantage is: flowmeter Difficult calibration after drifting, short power life and inconvenient replacement of adjustable mechanism technical problems, high single well cost, difficult verification and other problems, such as the cable-type water injection well intelligent measuring and adjusting water device with patent number 201120566313.5 and patent number 201220056520.0 This is the case for automatic measurement and adjustment and monitoring of dispensing water distributors

The above patents also have a common feature: the water distributor and the packer are two independent tools that need to be connected on site

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