Mud cleaning unit also called mud cleaner, which to control solids in drilling process. Mud cleaning is well-suited to types of mud as follows.
- Water/Light Treated Clay mud.
- Dispersed weighted mud.
- Un-weighted drilling mud of non-dispersed .
- Weighted drilling mud of non-dispersed
In control water/light treated clay mud process: Mud cleaning units are important solids control equipment to remove fine silts for low weight.
In control dispersed weighted mud process: mud cleaning device (unit) excludes light solids on medium weight mud.
Mud cleaner is essential equipment for control Un-weighted drilling mud of non-dispersed drilling mud process.
Mud cleaning system is useful on control solids of medium weight muds of dispersed mud process.
The Structure of Mud Cleaning Units
As a result of the shale shaker, desander, desilter combination, Mud cleaning unit mainly containly three parts: De-sand, De-silt and shale shaker. “De” part actually is hydrocylone that materials is polyurethane. Polyurethane used to cast these hydrocylone is a proper blend. In testing, this blend has shown to significantly exceed 90% almumina ceramic in abrasion wear resistance. The shaker part of mud cleaning unit that as same as single shale shaker which means two main determined factors related: motor and screen. Arrange motor can get different types of motion: linear motion and balanced elliptical motion. The key factors of shale shaker screen were conductance (cut-point) and reliable life. Conductance of shaker screen was related performance of shale shaker and reliable life of the screen was related cost(money).
How The Mud Cleaning Unit Working
In solids control system, mud cleaning units are second phases of control equipment behind shaker. Generally, there are two centrifugal pumps feed mud cleaners with drilling fluid. One for De-silt part and other for De-sand part get through inlet lines. So it means that you can choose to turn on/off one of or both parts depend on need. Usually turn off De-sand part, when drilling rig screw deeper. While mud run into hydrocyclone through inlet line, something happens (principle of hydrocyclone).
Why Use Mud Cleaning Unit
Firstly Environmentally Efficient
The solid control mud cleaner provides efficient removal of sand and silt particles larger than 20 microns, and some as small as 15 microns. Removing and drying drilled solids helps meet environmental regulations by minimizing waste generated and reducing disposal cost.
Secondly High Performance
Processing capacity of 1,000 gpm with the 2-12 desander and 900 gpm with the desilter concentrates solids onto a classification shaker.
Mud cleaning unit with the 2-12 desander, desilter or both to process weighted or unweighted fluid systems.
Extends Equipment Life The mud cleaner helps minimize maintenance, repair and replacement of downstream equipment.
And Most Improtant Is Reduces Operating Cost
Mud cleaner reduces sand and silt-size particles and saves liquid. Thus reducing mud cost, chances of stuck pipe and lost circulation and improving rate of penetration. Reduces Disposal Cost . The mud cleaner minimizes waste generating thus reducing disposal cost.