Sand adding and mixing device

Abstract

The invention discloses a sand adding and mixing device which comprises a suction pump and at least one hydrocyclones. The suction pump comprises a first shell, a liquid inlet cavity, a nozzle, a sand suction cavity, a gullet and a pressurization cavity, wherein the liquid inlet cavity, the nozzle, the sand suction cavity, the gullet and the pressurization cavity are formed in the first shell and communicated in sequence; the projected area of sections, facing the direction perpendicular to the horizontal axis, of the liquid inlet cavity and the pressurization cavity is larger than the projected area of sections, facing the direction perpendicular to the horizontal axis, of the nozzle and the gullet; an opening communicated with the sand suction cavity is formed in the wall of the first shell; each hydrocyclones comprises a second shell and one or more rib plates which are formed on the inner wall of the second shell and extend along the horizontal axis spirally; a sand stirring channel is formed between each second shell and the corresponding rib plate, the second shell and the first shell are sealed, and each sand stirring channel is communicated with the pressurization cavity of the suction pump. According to the sand adding and mixing device, sand mixing liquid can be output continuously and evenly, and the effect of gravel filling simulation test is guaranteed.

Description

technical field [0001] The invention relates to a test device for a gravel filling simulation test, in particular to a sand adding and mixing device. Background technique [0002] Gravel packing sand control technology is a sand control technology that can actively control the scale of sand production, maintain high oil well production and maintain wellbore stability for a long time, and is especially suitable for reservoirs that loosen and produce fine silt. The impact of sand production on the development effect of oil wells can be minimized through the research of gravel packing sand control technology, and the development life of oil wells can be extended. [0003] During the production of sand producing oil wells, gravel packing simulation tests are generally required before sand control measures are taken. The gravel packing simulation test is mainly to obtain the laboratory test to optimize the process parameters, and then guide the field implementation. Such as fi...

AI Technical Summary

Problems solved by technology

However, stopping the pump midway during the test will affect the experimental results

[0006] In addition, due to the fast flow of high-speed liquid, the contact time with the sand at the center A is extremely short, resulting in a short sand mixing time, and it is difficult to mix the sand liquid evenly, which will also affect the test results.

[0007] Due to the poor performance of the above-mentioned sand-adding and sand-mixing device, those skilled in the art urgently need a kind of sand-adding and sand-mixing device with good performance

Images