Injection allocation device

Abstract

The invention provides an injection allocation device, and relates to the technical field of oil field downhole tools. On the plane where a liquid passing hole is opposite to a water outlet, a ceramic piece II is arranged on a movable water nozzle, a ceramic piece I is arranged on a fixed water nozzle, rectangular metering holes are transversely formed in the ceramic piece I and the ceramic piece II, and a spring I is arranged between the ceramic piece I and the movable water nozzle. The injection allocation device has the advantages that by arranging a lifting pipe and the movable water nozzle, downhole positioning butt joint and water amount adjustment of the injection allocation device and a bridge type concentric seal checking, testing and adjusting integrated tester are achieved, and the requirement for layered water distribution of highly-deviated wells and deep wells is met; and due to the unique structural design of the rectangular metering holes, the metering flow is accurate and can be calculated, the injection allocation device is matched with the bridge type concentric seal checking, testing and adjusting integrated tester, the water injection amount adjustment and packer seal checking synchronous operation are achieved through the next instrument, the water injection amount can be adjusted only by driving the movable water nozzle to ascend and descend, the adjustment precision is high, the water nozzle throwing and fishing problem does not exist, the workload is reduced, and efficiency is improved.

Description

Technical field: [0001] The invention relates to the technical field of oilfield downhole tools, in particular to an injector. Background technique: [0002] In recent years, with the development and improvement of bridge eccentric and conventional eccentric injection technology, it has been widely used in major oil fields. According to the loss curve of the mouth, roughly select a water nozzle with a fixed size, put it into the plug, put the plug into the water distributor with a dropper, and then test the actual water injection volume of each layer with a flow meter. If the actual injection If the amount of water does not meet the requirements, it is necessary to remove the plug and the faucet, replace the faucet and then put it into the water distributor, and repeat this until the water injection amount of the layer meets the requirements. The quantity is large, and the success rate of instrument docking is low. At the same time, the size of the faucet is discontinuous, ...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the development and improvement of bridge eccentric and conventional eccentric injection technology, it has been widely used in major oil fields. According to the loss curve of the mouth, roughly select a water nozzle with a fixed size, put it into the plug, put the plug into the water distributor with a dropper, and then test the actual water injection volume of each layer with a flow meter. If the actual injection If the amount of water does not meet the requirements, it is necessary to remove the plug and the faucet, replace the faucet and then put it into the water distributor, and repeat this until the water injection amount of the layer meets the requirements. The quantity is large, and the success rate of instrument docking is low. At the same time, the size of the faucet is discontinuous, and the deployment accuracy is poor;

[0003] Although the ordinary bridge-type concentric dispenser overcomes the above-mentioned defects, the test deployment operation and the packer seal inspection operation must be tested separately by testing equipment, and they cannot be operated at the same time, which increases the workload and affects work efficiency.

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