Multi-tube balanced water injection volume high-efficiency layered water injection adjustment device

Abstract

The invention discloses a multi-tube type balanced water injection volume high-efficiency layered water injection adjustment device, which mainly relates to the technical field of oil fields. Including the water injection outer pipe, the bottom of the water injection outer pipe is provided with a joint, the bottom of the joint is provided with a central tube, and several rubber tubes are arranged on the central tube from top to bottom, and the gap between two adjacent rubber tubes is An annular water injector is provided, and a water injection pipeline connected with the annular water injector is provided in the central pipe, a liquid inlet pipe is provided in the central pipe, and a one-way valve is provided at the top of the liquid inlet pipe. The outer wall of the tube is provided with a connecting tube suitable for the rubber cartridge, and the bottom of the pressurized tube is provided with a pressure relief device. The beneficial effects of the present invention are: it can ensure the pressure of the rubber cylinder, the rubber cylinder is easy to release pressure, easy to take out from the well, easy to maintain, and inject water at multiple angles in each layer, which can reduce the erosion of the well wall and ensure the safety of the water injection device. Verticality ensures layering effect.

Description

technical field [0001] The invention relates to the field of oil field technology, in particular to a multi-pipe type balanced water injection volume high-efficiency layered water injection regulating device. Background technique [0002] Using water injection wells to inject water into the oil layer to replenish and maintain the pressure of the oil layer is called water injection. Since each oil layer has great differences between layers, planes, and layers, oilfield water injection mostly adopts the method of layered water injection. , through the adjustment of interlayer structure and intralayer structure, the potential of thin poor layer and thick oil layer can be further tapped, and the water injection sweep coefficient can be improved. However, the existing layered water injection often uses a water distributor to distribute the water injection volume of each oil layer. The water injection process is divided into two steps: measurement and adjustment and water injectio...

AI Technical Summary

Problems solved by technology

However, the existing layered water injection often uses a water distributor to distribute the water injection volume of each oil layer. The water injection process is divided into two steps: measurement and adjustment and water injection. The water injection operation is complicated and time-consuming, and the operation and testing costs are expensive. The test efficiency is low due to problems such as resistance, jamming, or inability to cast water nozzles. However, the packers used in some existing water injection devices that can be directly tested and adjusted on the ground need to be continuously pressurized. The damage is large, and the water injection direction of each layer is single, which seriously erodes the well wall, and there is a problem that the water injection device is inclined, which affects the delamination of the packer

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