Underground real-time monitoring and automatic allocation electric water distributor and using method thereof

Abstract

The invention provides an underground real-time monitoring and automatic allocation electric water distributor and a using method thereof. The underground real-time monitoring and automatic allocationelectric water distributor comprises an upper connector, a pressure-bearing outer pipe and a lower connector which are sequentially connected from top to bottom, wherein an overflowing pipe is arranged in the pressure-bearing outer pipe, and a throttling body is connected to the lower part of the overflowing pipe; an upper connector sliding sleeve is arranged in the upper connector, and an antenna protective cover is arranged in the upper connector; an antenna is arranged in the antenna protective cover; and a water nozzle assembly, a flowmeter, a circuit battery pack, a motor battery pack, apressure sensor and a circuit board are integrated in an annular space of the overflowing pipe and the pressure-bearing outer pipe. The water nozzle assembly converts rotary motion into reciprocatingmotion through a T-shaped lead screw assembly, a connecting rod is driven to be arranged in the outer pipe to reciprocate, and the water flow is adjusted through relative sliding of a balance valve sleeve and a balance valve element and the size of an exposed long-groove-shaped water outlet. The automation and intelligence level of layered water injection is greatly improved, layered measurementand adjustment, water well management and dynamic monitoring data of a layered water injection well are mastered in time, and a foundation is laid for big data processing and application.

Description

technical field [0001] The invention belongs to the technical field of oilfield intelligent water injection, and in particular relates to an electric water distributor for downhole real-time monitoring and automatic deployment and a method for using the same. Background technique [0002] Fine layered water injection technology is one of the core technologies for oilfield enhanced oil recovery. In recent years, in order to improve the level of oilfield development and realize efficient reservoir development, petroleum workers have focused on research on layered water injection technology, which meets the needs of reservoir development to a certain extent. It alleviates the problem of uneven water absorption caused by differences between layers and layers, and achieves balanced injection-production development of oilfield layers. Domestic oil fields have successively developed different injection technologies such as eccentric, bridge eccentric and bridge concentric. Satisfi...

AI Technical Summary

Problems solved by technology

Domestic oil fields have successively developed different injection technologies such as eccentric, bridge eccentric and bridge concentric. Satisfies different geological injection requirements for different layers. Although this type of technology can achieve the purpose of layered water injection for different water injection layers, the on-site construction process requires cables to connect downhole tools for continuous operation. The overall construction process is complicated, and layered flow measurement and adjustment is difficult. At the same time, the amount of layered water injection varies significantly with the influence of factors such as pressure and formation water absorption capacity, which seriously restricts the effect of layered water injection

[0003] With the deepening of oilfield development, the number of separate injection wells has increased year by year, the workload of measurement and adjustment is heavy, and the cost of supporting measurement and adjustment has increased year by year; the frequent occurrence of obstructions in measurement and adjustment has resulted in high costs for later detection of strings and pressure operations; pressure fluctuations, formation Influenced by factors such as changes in water absorption capacity, the inspection and matching qualification rate dropped rapidly, making it difficult to meet the needs of fine layered water injection in oilfields; at the same time, in order to further improve the digital level of water injection, a new way of layered water injection was explored from 2012 to 2017, and digital separate injection technology research was carried out and experiments, developed a series of digital water distributors and various underground wireless communication methods, but there are problems such as unstable wireless communication status and fragile miniaturized flowmeters.

Images