Drilling Mud Decanter Centrifuge Technical Process

• Jan 06, 2015
• Experts in drilling fluids commonly hold the idea that drilling mud decanter centrifuge plays a crucial importance in solids control system. ...

Experts in drilling fluids commonly hold the idea that drilling mud decanter centrifuge plays a crucial importance in solids control system.

According to survey, at present power with 18.5 KW, 22 kW, 37 KW, 45KW and working speed with 1300-2200 r/min decanter centrifuges in China. And there are mainly two kinds of centrifuge, high speed and middle speed centrifuge in the market and applied in drilling sites. Middle speed centrifuge rotates with the speed between 1300 r/min and 2200 r/min and generates centrifuge force 800 times as its gravity force. This kind centrifuge is of 40 -60 m3/h processing capacity and separates 5-7 μm drilling cuttings.

While high speed centrifuge rotates with the speed between 2500 r/min and 3300 r/min and generates centrifuge force 1200-2100 times as its gravity force. This kind centrifuge is of 40 -60 m3/h processing capacity and separates 2-5 μm drilling cuttings. In particular, this kind of centrifuge is available to adjust and control drilling mud capacity according to drilling mud features and characteristics. VFD (verified frequency decanter centrifuge) is another improved decanter with higher techniques and convenience operation practice. This kind of unit is able to adjust the working speed and processing capacity according to the characteristics of the drilling mud efficiently, which has been thought as the most favorable unit in deep drilling and horizontal well drilling.

Nowadays, giant international solids control brand derrick and swaco has widely promotes verified frequency decanter with full frequency adjustment and high speed rotation. VFD high speed centrifuge is of high manufacture cost and requires high qualified operators who is honored as expert electric engineer to control and maintain the unit. The common practice in drilling is to combine middle and high speed centrifuge accordingly. After middle centrifuge processing the drilling mud, then the drilling mud is processed again by the high speed centrifuge and then flow into the big circulation systems.