An automatic dosing device for oilfield skid-mounted pipelines

Abstract

The invention discloses an automatic dosing device for oilfield skid-mounted pipelines, comprising a scraper flowmeter connected to the pipeline, the main shaft of the scraper flowmeter is connected to the main body of the dosing device through a cam, and the main body of the dosing device It includes a dosing cylinder liner, a dosing plunger is inserted into the dosing cylinder liner, a dosing cabin for accommodating the medicament is arranged between the dosing cylinder liner and the dosing plunger, and the side of the dosing cylinder liner is arranged There is a medicament inlet communicated with the dosing cabin, the medicament inlet is connected to the medicament tank, the bottom of the medicament cylinder liner is provided with a medicament outlet communicated with the medicament cabin, the medicament outlet is connected to the rear straight pipe section, and the medicament column A spring tightening wrench is arranged on the upper part of the plug, a compression spring is arranged between the spring tightening wrench and the top surface of the dosing cylinder liner, and the cam is matched and connected with the top of the dosing plunger. The invention has the advantages of convenient processing and installation, uniform dosing concentration and low maintenance cost.

Description

technical field [0001] The invention relates to the field of oilfield pipeline gathering and transportation, in particular to a chemical agent filling process for oilfield pipelines, in particular to an oilfield skid-mounted pipeline automatic dosing device. Background technique [0002] After water-containing crude oil is extracted from the ground, it is transported to the downstream station by pipeline for adding demulsifier for oil-water separation. Since the demulsifier takes a certain time to act, oil production enterprises hope to add demulsifier as soon as possible to increase the demulsification effect; at the same time, the medium in the oilfield pipeline is rich in Contains CO 2 , H 2 S, high salinity salt and other corrosive substances are highly corrosive, and the pipelines are severely corroded and damaged, which has a serious impact on oil and gas production enterprises. The usual practice of oil production units is to add chemical agents (demulsifier, corros...

AI Technical Summary

Problems solved by technology

[0002] After the watery crude oil is extracted from the ground, it is transported to the downstream station through pipelines to add demulsifiers for oil-water separation. Since the demulsifiers take a certain time to take effect, oil production companies hope to add demulsifiers as soon as possible to increase the demulsification effect; at the same time, the medium in the oilfield pipeline is rich Contains CO 2 、H 2 S, high salinity salt and other corrosive substances are highly corrosive, and the pipelines are severely corroded and damaged, which has a serious impact on oil and gas production enterprises

The usual practice of oil production units is to add chemical agents (demulsifiers, corrosion inhibitors, scale inhibitors, etc.) The size of the device is large, the cost is high, the installation is inconvenient, and the oil well production is unstable, which leads to the instability of the dosing concentration. A chemical agent filling device that is easy to use and has a stable dosing effect is needed.

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