- Silt-sized solids removal (12 – 74 microns)
- 80 gpm per cone at 75 feet of head
- Variable size apex inserts
- Available with and without a ramp in the feed inlet
The Derrick round and inline desilters are designed to remove silt-sized (12-74 microns) solids from drilling fluids. Derrick round desilters are simple to operate and easy to maintain. Shutoff valves on each cone inlet permit individual cone removal and inspection without interrupting operation of the desilter. The Derrick inline desilter is designed for use in areas that cannot accommodate the spatial requirements for the premium round desilter configuration. Both the round and inline desilters are available in 10-, 12-, 16- and 20-cone models, which results in a maximum capacity of 1600 GPM at 75 feet of head. The inline desilter is also available in a stand-alone model.
Derrick manufactures two 4” cones with different internal geometries – with and without a ramp in the feed inlet. The circular pipe feed is smoothly reformed into a rectangular feed. This rectangular ramp feed enters the cone tangentially minimizing turbulence in the upper portion of the cone allowing the solids to quickly move to the wall of the hydrocyclone. The ramp feed cone has a capacity of 80 GPM at 75 feet of head and is primarily used if the cone discharge is over a shaker/mud cleaner. The 4” cone without the ramp feed is typically used on stand-alone desilters, when liquid conservation is of prime importance. This cone has a capacity of 70 GPM at 75 feet of head.
Derrick’s polyurethane hydrocyclone offers a high volume 4” cone, while providing contractors an economical replacement for less efficient older equipment. Derrick hydrocyclones are manufactured using a specially formulated EU polyurethane which has excellent resistance to heat and abrasion. Derrick’s unique uni-body construction eliminates excess parts and seams where excessive wear can occur. Derrick’s 4” desilter cones are available with ceramic inserts for extreme service.