Automatic emptying and swabbing measuring tank

Abstract

The invention discloses an automatic emptying and swabbing measuring tank in the field of a measuring instrument in the petroleum engineering, which comprises a liquid inlet pipeline communicated to an inner cavity of a tank body. The bottom of the tank body is provided with a drain pipe. The drain pipe is provided with a blowoff valve. The tail end of the liquid inlet pipeline is connected with a liquid inlet sleeve with a liquid inlet valve. The liquid inlet sleeve is vertically and fixedly arranged on a supporting cover board arranged at an upper opening of the tank body. A liquid inlet core pipe matched with the liquid inlet sleeve is arranged in the liquid inlet sleeve. An emptying piston matched with the tank body is arranged in the tank body. The emptying piston is connected with a driving mechanism fixedly arranged on the supporting cover board. The lower end of the liquid inlet core pipe is fixedly connected with the emptying piston and is communicated with the inner cavity of the tank body. The emptying piston is provided with an exhaust core pipe. An exhaust sleeve matched with the exhaust core pipe is arranged outside the exhaust core pipe. The exhaust sleeve with an exhaust valve is vertically and fixedly arranged on the cover board. Liquid in the tank body and the liquid inlet pipeline can be automatically emptied by the automatic emptying and swabbing measuring tank. Meanwhile, the environment pollution can be reduced and the automatic emptying and swabbing measuring tank is suitable to be applied to the swabbing measurement operation in the petroleum engineering.

Description

technical field [0001] The invention relates to a measuring instrument in petroleum engineering. Background technique [0002] Swabbing measurement is often done in petroleum engineering swabbing operations, and whether the swabbing measurement work is perfect or not directly affects the accurate collection of operation data. There is a metering square tank in the prior art, which mainly includes a tank body installed at the outlet of the wellhead drainage pipeline. A drain pipe is provided at the bottom of the tank body, and an emptying valve is provided on the drain pipe. The liquid pumped out of the well enters the tank directly through the pipeline. In the body, the output is converted according to the level of the liquid level in the tank, and the tank can be emptied through the emptying valve at the bottom of the tank. Its shortcomings are: because the tank is not sealed, the pumped out liquid splashes and easily pollutes the environment; there is no degassing mechani...

AI Technical Summary

Problems solved by technology

Its shortcomings are: because the tank is not sealed, the pumped out liquid splashes and easily pollutes the environment; there is no degassing mechanism, resulting in inaccurate measurement; due to the huge workload of manual cleaning of the square tank, and incomplete cleaning affects the accuracy of measurement; The extracted liquid has a high viscosity, a high condensation point and cannot be emptied in time, causing the extracted liquid to block the liquid outlet pipeline or the metering tank cannot be emptied and shut down; in the existing technology, a three-phase separator is also used for swabbing metering, But expensive and difficult to popularize

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