The oil drilling solids control system is composed of solids control equipment. It is one of the eight major equipment in drilling engineering and plays an important role. Today, we will share the eight major solids control equipment in the drilling solids control system, namely: drilling fluid vibrating screen, vacuum degasser, drilling fluid desander, drilling fluid desilter, drilling fluid centrifuge, liquid-gas separator, mud agitator, etc.
Drilling solids control system mud treatment process:
General mud solids control process: drilling fluid returned from the wellhead → drilling fluid vibrating screen → vacuum degasser → drilling fluid desander → desilter → drilling fluid centrifuge → purified drilling fluid returns to the wellhead
1.Drilling fluid vibrating screen: Drilling fluid is the first-level solids control equipment for drilling fluid treatment. Its function is to remove cuttings and other harmful solid particles in the drilling fluid. The drilling fluid uses different numbers of screens to control the size of the separated particles, mainly solid particles larger than 74 microns.
2.Vacuum degasser: Vacuum degasser is mainly used to remove gas that invades drilling fluid, which is not within the scope of solid control. However, since gas invasion has a great harm to the specific gravity, viscosity and density of drilling fluid, degasser is usually used.
3.Drilling fluid desander: It is the secondary purification equipment of drilling fluid. The desander is mainly used to remove sand particles larger than 44~74 microns.
4.Drilling fluid desilter: It is mainly used for the third-level purification of drilling fluid. The desilter mainly acts on muddy solid particles larger than 15-44 microns. Micro-cyclones can also be selected according to the actual situation of the drilling fluid, which are mainly used to separate muddy solid particles larger than 2-4 microns.
5.Drilling fluid centrifuge: The function of drilling fluid is to control the clay particles in the drilling fluid, control the solid phase of the drilling fluid, remove the solid content of non-weighted drilling fluid, and recover the barite in the weighted drilling fluid. The drilling fluid centrifuge mainly acts on solid particles of 2~44 microns.
6.Liquid-gas separator: the main equipment for handling gas invasion of drilling fluid during oil drilling. The specific gravity and viscosity of drilling fluid with gas invasion will greatly deviate from normal parameters and cannot meet drilling requirements. In serious cases, it will cause well kicks and even blowout accidents.
7.Mud agitator: A stirring device whose main function is to ensure that the mud in the mud tank is stirred evenly. It is designed to mix the mud so that the drill cuttings and sand do not settle at the bottom of the mud tank so that they can pass through the purification system smoothly. It is mainly used to mix the drill cuttings evenly in the mud.