Integrated sand remover

Abstract

The invention relates to the technical field of sand removal of oil field fluids, and discloses an integrated sand remover. The integrated sand remover comprises a barrel. The top of the barrel is a rotational flow functional part, and the bottom part of the barrel is a filter screen functional part. The rotational flow functional part and the filter screen sand removing part are integrally arranged. A rotational flow outlet is conventionally formed in the rotational flow sand removing part on the top of the barrel. A rotational flow closing function and a filter screen opening function are switched by closing a valve I and opening a valve II. A filter screen outlet is conventionally formed in the filter screen sand removing part at the bottom of the barrel. A filter screen closing function and a rotational flow opening function are switched by closing the valve II and opening the valve I. According to the thick state of a fluid, the valve I or the valve II is mounted at the filter screen outlet or the rotational flow outlet, so that different sand removal functions of the equipment are selected to fit different working conditions of an oil field operation. A sand removal operationis carried out within the shortest time for the state of a fluid liquid, so that the sand removal efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of sand removal for oilfield fluids, in particular to an integrated sand remover. Background technique [0002] Desander is a device that separates impurities from oil, gas, water or waste water. It is widely used in oil field drilling. The two most common desanders are cyclone desander and filter screen desander. ; [0003] The principle of the cyclone desander is as follows: the fluid enters the desander along the tangential direction, and the sand has a large specific gravity and will move down along the inner wall of the cyclone inner cylinder. Instructions attached figure 1 ); the principle of the filter screen desander is as follows: it adopts a double-tube structure. After the fluid enters, as long as the sand is larger than the size of the filter screen, it will stay in the filter screen to achieve the purpose of sand removal (refer to the attached manual figure 2 ). [0004] Now the filter scre...

AI Technical Summary

Problems solved by technology

[0004] Now the filter screen desander and the cyclone desander are two pieces of equipment. The filter screen desander is easy to block the filter when dealing with viscous liquids, causing damage to the equipment; the cyclone desander is in Sand removal efficiency varies greatly under different well conditions; now oil field development needs to adopt hydraulic fracturing and other production stimulation measures. After fracturing, part of the proppant is discharged with the fracturing fluid (viscous liquid), and the formation fluid is discharged after the fracturing fluid is drained. In this working condition, it is necessary to use a cyclone desander first, and then use a filter screen desander to remove sand efficiently

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