Desander is a secondary solids control equipment for processing drilling fluid. According to the diameter of the cyclone, it can be divided into cyclone desander and cyclone desilter. Generally, a combination of cyclones above 6" is called desander. It is a secondary solids control equipment in drilling operations. Commonly used are 10" and 12" cyclones, which are mainly used to separate solid particles with a particle size of 47-76μm in the drilling fluid. According to the size of the processing capacity required by the customer, select several groups of cyclones to combine into a desander. Xi’an HL's cyclone desander is widely used in oil drilling and horizontal directional drilling.
Fault 1: Undercurrent is too dry
Cause: the diameter of the underflow port is too small
Remedy: Change the underflow port to a larger one.
Fault 2: Excessive liquid loss.
Cause:
A. The supply hydraulic head is too low: 1. The inlet is partially blocked; 2. There is air in the liquid supply pump; 3. The pump speed is too slow; 4. The impeller size is too small; 5. The pump discharge pipeline has throttling; 6. Pump steering Error; 7. Solid deposition in the pipeline.
B. The nozzle is too large.
C. Inner cylinder or nozzle wear: 1. Long-term work under high pressure; 2. Normal wear and tear; 3. Inlet installation error.
Solution:
A. Increase the hydraulic pressure head: 1. Install a filter screen at the inlet of the liquid supply pump; 2. Adjust and correct; 3. If the diesel engine is driven, increase the pump speed; 4. Increase the size of the impeller; 5. Check the pipeline; 6. Adjust the steering ; 7. Clean the pipeline and install a butterfly valve near the suction end.
B. Reduce the nozzle size.
C. Correction methods: 1. Reduce the pump speed or reduce the size of the impeller; 2. Reinstall the nozzle; 3. Reinstall.
Trouble three: the underflow vent is not ejected in an umbrella installation
Cause:
1. The pressure of the drilling fluid entering the cyclone is insufficient;
2. The underflow port diameter is not adjusted properly
Remedy: Check the sand pump and pipeline valve to adjust the diameter of the underflow port.
Xi'an HL Petroleum Equipment Co., Ltd. is a company specializing in the production of solids control equipment, mud treatment systems, tanks and steel structures, drilling tools and accessories. In terms of production and processing capabilities, we have 10 years of solid-liquid separation industrial design capabilities. Our products have been widely used in oilfield drilling, horizontal directional drilling (HDD), shields, waste drilling fluid treatment and other industries, welcome to send inquiry to us: sales@hlsolidscontrol.com
