Efficient downhole medicament adding device

Abstract

The invention discloses an efficient downhole medicament adding device. The device comprises a medicament storage cylinder, a control cylinder and a photovoltaic panel, an isolation plug is arranged in the top of the medicament storage cylinder through a sealing ring, and a baseplate at the bottom of the medicament storage cylinder is in contact with a top plate at the top of the control cylinder;a liquid discharge pipe in the control cylinder is connected to the baseplate and the top plate, a battery pack, a control panel and a motor are arranged in a fixing frame at the lower end of the topplate, and a pulse valve which is connected with the control panel is arranged on the liquid discharge pipe; a grinding-wheel-type adjustment valve with an adjustment brush is connected to a rotationshaft of the motor, multiple liquid holes are formed in a liquid leakage plate at the bottom of the control cylinder, and a charger is arranged between the fixing frame and the inner wall of the control cylinder; the photovoltaic panel is connected to the charger through a wire and a current stabilizer, and an energy transducer and an ultrasonic generator are arranged on the liquid leakage plate.The efficient downhole medicament adding device is simple in structure, good in treatment effect, high in working efficiency, convenient to operate and long in service life, a quantitative chemical medicament can be automatically added on time, the quantity of the added chemical medicament is constant, and the adding time intervals are identical.

Description

technical field [0001] The invention relates to the technical field of oil recovery in oil fields, in particular to an efficient downhole dosing device. Background technique [0002] In oil field development, with the large-scale development of ultra-low permeability reservoirs, the use of small casings for well completion and production has become a major technology. However, with the prolongation of production time, the compatibility of formation water and the physical properties of crude oil , there are many shortcomings, such as the conventional manual dosing methods on the ground are all concentrated dosing, the traditional mechanical downhole drip dosing device can not control the dosing flow rate, it is difficult to achieve regular and quantitative dosing, often three months of dosing The addition is completed in less than a week; due to the small amount of artificial dosing at the wellhead, most of them are attached to the tubing and casing walls due to the influence...

AI Technical Summary

Problems solved by technology

[0002] In oil field development, with the large-scale development of ultra-low permeability reservoirs, the use of small casings for well completion and production has become a major technology. However, with the prolongation of production time, the compatibility of formation water and the physical properties of crude oil , there are many shortcomings, such as the conventional manual dosing methods on the ground are all concentrated dosing, the traditional mechanical downhole drip dosing device can not control the dosing flow rate, it is difficult to achieve regular and quantitative dosing, often three months of dosing The addition is completed in less than a week; due to the small amount of artificial dosing at the wellhead, most of them are attached to the tubing and casing walls due to the influence of the wellbore trajectory of the directional well, and the performance of the chemical is difficult to be effectively exerted. It is greatly affected by the well temperature, and the concentration is difficult to be effectively controlled; the traditional dosing device has a short practical time, and the battery needs to be replaced regularly to ensure the normal operation of the dosing device, resulting in short use time and troublesome operation of the dosing device

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