Drilling fluid purification equipment based on secondary separation device

Abstract

The invention discloses drilling fluid purification equipment based on a secondary separation device. The equipment comprises a screening box, a vibration motor and tensioning springs. A material inlet is formed in the upper portion of one end of the screening box, and a material outlet is formed in the other end of the screening box. A screen frame and a wide-meshed screen are arranged in the screening box. A fine-meshed screen is arranged below the wide-meshed screen. A concave groove is formed between the wide-meshed screen and the fine-meshed screen and extends from the material outlet to the material inlet. Through holes are formed in the concave groove. A liquid phase material receiving plate is arranged in the concave groove and is parallel to the wide-meshed screen. The equipment further comprises studs. The studs pass through the through holes in the concave groove and penetrate through the liquid phase material receiving plate. A plurality of spring-baffle devices are arranged on the screen frame at equal intervals. In the early stage of exploitation, the screening speed of liquid phases in drilling fluid is increased, so that the treatment amount of the drilling fluid vibration screens is increased; and in the later stage of exploitation, the screens can still screen the drilling fluid even though the size of solid-phase particulates decreases, and the separation efficiency of the drilling fluid vibration screens is improved.

Description

technical field [0001] The invention relates to the field of drilling fluid recovery, in particular to drilling fluid purification equipment based on a secondary separation device. Background technique [0002] Drilling fluid is a general term for various circulating fluids used in the drilling process, and drilling fluid is also called drilling mud. During the drilling process, the drilling fluid can effectively cool and lubricate the drill bit, and can also balance the underlying pressure to avoid blowout and kick. In addition, the drilling fluid can also transmit power and take coring samples. According to different dispersion media, drilling fluids are mainly divided into three categories: water-based drilling fluids, oil-based drilling fluids and gas-based drilling fluids. [0003] During the drilling process, the drilling fluid enters the bottom layer through the drill pipe, and after completing its function, it is discharged together with the slag generated in the dr...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is aimed at the shortcomings of the traditional drilling fluid shale shaker, the purpose is to provide drilling fluid purification equipment based on the secondary separation device, to solve the problem that the sieve hole size of the traditional drilling fluid shale shaker does not change during the screening process. It leads to the problem of low screening efficiency when dealing with large-volume solid particles in the drilling fluid in the early stage of drilling and small-volume solid particles in the later stage

Images