Solids control is a technique used in the drilling to separate the solids in the drilling fluids that are crushed by the drill bits and carried out of the well surface. During operating oilfield drilling mud solids control equipment, there are more or less questions. Here are some common questions and answers.
Oil Drilling Fluid Solids Control Equipment
1. Generally, which equipment is used in oil drilling solids control system?
Answer: There are seven major types of equipment: shale shaker, desander, desilter, mud cleaner, decanter centrifuge, mud agitator, centrifugal pump.
2. Currently, what is the normal operating pressure used by the desander, desilter, mud cleaner?
Answer : Generally not less than 0.3 Mpa .
3. What is the main function of decanter centrifuge?
Answer: The main functions: (1) to remove the small solids particles in the drilling fluid. (2) to reduce the density of drilling fluid. (3) to treat the sewage.
4. When plugging materials contain fiber, how would it impact solids control equipment? How to deal with that?
Answer: After plugging material takes fiber into drilling fluids, shale shaker will run out drilling fluids or screen out. Treatment method is to use big hole screen mesh, or stop using the shale shaker.
5. Sometimes sand doesn’t go downwards on the shaker screen, instead of upwards, why? How to deal with that?
Answer :The main is replacing generator or replacement of the power switch, then pick up the three phase line, the motor reverse, so the sand up. Processing method as long as the change of any two of the three power cord root, link them .
6. Why does shale shaker sometimes loss drilling fluids?
Answer: The major reason: (1)drilling fluids displacement is greater than the load of shaker. (2) drilling fluids viscosity is high and screen mesh is fine, so it can’t flow down. (3) drilling fluids is mixed with some fiber. (4) drilling fluids is dried on the screen mesh. (5) belt is loose. (6) voltage.
7. Desander, desilter hydrocyclone nozzle will be blocked, why? How to prevent that?
Answer: The main reason is that the nozzle is used incorrectly or shaker screen is damaged, or desilter pump and desander pump are not equipped with screen mesh.
