An online intelligent control nozzle device for water injection wells

Abstract

The invention discloses an online intelligent regulation-and-control water nozzle device of a water injection wall. The online intelligent regulation-and-control water nozzle device comprises a driving mechanism, a transmission mechanism and a balance valve mechanism, wherein the driving mechanism, the transmission mechanism and the balance valve mechanism are successively connected from bottom to top. The driving mechanism mainly comprises a motor reducer, a shaft coupling, a thrust bearing and a trapezoidal lead screw. The transmission mechanism mainly comprises a connecting rod, a stroke switch and an outer pipe. The balance valve mechanism mainly comprises a sealed cylinder body, a piston, a balance valve core and a balance valve sleeve. The trapezoidal lead screw of the driving mechanism is connected with the connecting rod of the transmission mechanism through a screw. The connecting rod of the transmission mechanism is in sleeving mounting with the balance valve mechanism. According to the online intelligent regulation-and-control water nozzle device, online adjustment is performed on the opening of the water nozzle through driving of the motor reducer for directly changing water injection mounts of different layers; inputting / dragging of the water nozzle or connection adjustment of a measurement adjustment instrument is not required; a defect that an existing water nozzle inputting / dragging adjustment mode is affected by well inclination is settled; and requirements for complicated well conditions such as high-inclination wells and horizontal wells can be satisfied.

Description

technical field [0001] The invention relates to a layered water injection development technology for oil field water injection wells, in particular to an online intelligent control nozzle device for water injection wells. Background technique [0002] In the process of oilfield development, layered water injection is an important means to solve interlayer conflicts, maintain formation energy, and maintain long-term stable and high production of oilfields. Among them, layered testing and deployment are the keys to realize fine water injection in water injection layers. The measurement and adjustment of the traditional water distribution device is mainly achieved by fishing the core of the underground water distribution device to replace the faucet through tools such as steel wires. This traditional water distribution device core and faucet is widely used, but it has disadvantages: ①The real-time performance of measurement and adjustment is poor , the water nozzle cannot be ad...

AI Technical Summary

Problems solved by technology

The measurement and adjustment of the traditional water distribution device is mainly achieved by fishing the core of the underground water distribution device to replace the faucet through tools such as steel wires. This traditional water distribution device core and faucet is widely used, but it has disadvantages: ①The real-time performance of measurement and adjustment is poor , the water nozzle cannot be adjusted in time according to the downhole conditions; ②The precision of water distribution is low, and the downhole fine water injection cannot be realized; ③The workload of fishing is heavy, and the success rate of fishing is low when constructing highly inclined wells or horizontal wells

In order to achieve the purpose of fine water injection, an integrated water distributor with measurement and adjustment has appeared in recent years. The movable core is adjusted through the integrated measurement and adjustment instrument with a manipulator, which realizes the continuous adjustment of the water nozzle, and achieves the adjustment while measuring. However, it also has disadvantages: ①The instrument is taken out after each measurement and adjustment, and the water nozzle of the downhole water distributor is in a fixed state. If the formation pressure or water injection pressure fluctuates, the water distributor cannot realize automatic adjustment. Adjustment, resulting in inaccurate water injection; ②It can only realize short-term real-time monitoring of flow rate, but cannot realize long-term monitoring; ③When adjusting the water nozzle, it also faces problems such as difficult docking between high-inclination wells and horizontal wells

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