In the process of high-density drilling fluid construction, due to the high specific gravity of the drilling fluid, a large amount of barite needs to be retained in the drilling fluid during centrifuge treatment. Mechanical drilling fluid centrifuges cannot achieve good separation results, while Hydraulic drive centrifuge Since the differential speed and the drum speed are two different independent systems, the appropriate differential speed and drum speed can be selected under the state of constant torque output, and the barite in the drilling fluid can be retained while removing the drilling fluid. Hazardous solid phase particles. Especially in the horizontal well drilling process, the harmful solid particles in the drilling fluid are small in size, the viscosity of the drilling fluid is high, and the free sedimentation speed of the solid particles is slow. The existing centrifuge has poor separation effect or even no separation effect, while Hydraulic The drive centrifuge has high rotational speed, large pushing torque and wide differential rotational speed range, which can effectively remove harmful fine particles in drilling fluid.

Hydraulic drive centrifuge uses a hydraulic differential, and the automatic control instrument system can automatically control the flow of the hydraulic differential according to the comparison between the detected system pressure and the set pressure value, and then control the speed of the screw, thereby changing the differential speed. Therefore, Hydraulic drive centrifuge, on the one hand, the automatic control instrument system can respond to different degrees of material blockage to ensure the safe operation of the machine; on the other hand, the differential speed is only related to the speed of the hydraulic differential and the hydraulic pump station, and the centrifugal The rotating speed of the machine drum is irrelevant, so it can be realized that in the process of solids control of drilling fluid, the differential speed of the centrifuge's constant torque output during the separation and purification of harmful solids can be adjusted steplessly at full frequency, and has strong adaptability to material changes.

Hydraulic drive centrifuge is convenient for cleaning slag. Even if the machine is blocked due to too much concentration change or misoperation, the hydraulic differential can start the screw before the drum is started, and the screw and blade 2 discharge the accumulated material in the drum like a conveyor. . Therefore, when using Hydraulic drive centrifuge, as long as the hydraulic device is activated, the blockage fault is automatically eliminated, and there is no need to disassemble the machine to remove the accumulated material.