Layered exploitation control method for petroleum and magnetic control bottom-hole regulator

Abstract

The invention relates to a layered exploitation control method for petroleum. Steel balls of specified quantity are put in a pit to serve as control signals so as to respectively control bottom-hole regulators installed on every petroleum production layer to achieve layered control. Controllers are axially arranged in magnetic control bottom-hole regulator casings. Every controller comprises a power switch (3), an induction coil (4), a high energy battery (5), a controller circuit board (6), a screw rod transmission pair (7), a driving motor (8) and a valve core (9). The controller circuit board (6) receives steel ball signals sensed by the induction coil (4) and controls the driving motor (8) to rotate, the valve core (9) is driven through the screw rod transmission pair (7) to axially slide up and down so as to open or close a bottom-hole regulator hole in radial communication with the inside and the outside of the bottom-hole regulator, and layered control is achieved. The method has the advantages that the method is simple to operate, low in operation cost and high in operation reliability and errors do not occur easily. In use, the bottom-hole regulators are installed on every petroleum production layer of a petroleum well and can be independently controlled to achieve layered petroleum exploitation.

Description

technical field [0001] The invention relates to an oil well tool, in particular to a method for controlling oil stratified exploitation and a magnetically controlled distribution device for realizing stratified control by applying the method. Background technique [0002] As the oilfield enters the high water-cut development period, the contradiction between layers caused by layered mining becomes more and more prominent, and the ineffective water injection cycle consumes a large amount of production costs. Some of the existing distributors are controlled by dropping cables down the well, which is cumbersome to operate, and the operating cost is very high. Some are controlled by pressing downhole from the top of the well, but the operation reliability is poor and the error rate is relatively high. Contents of the invention [0003] The purpose of the present invention is to provide a control method for oil stratified exploitation with simple operation, low operating cost,...

AI Technical Summary

Problems solved by technology

[0002] As the oilfield enters a high water-cut development period, the conflicts between layers caused by layered mining become more and more prominent, and the ineffective water injection cycle consumes a lot of production costs

Some of the existing distributors are controlled by sending cables down the well, which is cumbersome to operate and the operating cost is very high

Some control the pressure from the top to the bottom of the well, but the operation reliability is poor and the error rate is relatively high

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