Solid Control Systemis a key equipment system used in petroleum drilling engineering to control the solid particle content in drilling fluid (drilling mud). Its main function is to remove harmful solid phases (such as rock cuttings, drill cuttings, etc.) in drilling fluid through physical separation technology, in order to maintain stable drilling fluid performance, improve drilling efficiency, and reduce costs..

Core Composition and Function Analysis

• Shale Shaker
  As the first stage separation equipment of the solid control system, it separates larger rock cuttings (usually>75μ) from the drilling fluid through the vibrating screen.; m）， It has the characteristics of large processing capacity and the ability to remove most useless solid phases, effectively reducing the load on subsequent equipment.
• Desander
  uses the principle of cyclone to separate solid particles with a particle size of 40-75 μ m. When the drilling fluid rotates at high speed inside the cyclone, centrifugal force throws the heavier solid phase towards the wall and discharges it from the bottom outlet.
• Desilter
  Further separates solid phases with smaller particle sizes (usually 15-40 m), often used in combination with sand removers, and is particularly suitable for deep and ultra deep wells that require high drilling fluid performance..
• Centrifugal
  By high-speed rotation, it separates ultrafine particles (<10μ m) and colloids, while recovering weighting materials (such as barite). It has the advantages of high processing accuracy and adjustable separation particle size, and is suitable for high-density drilling fluids..
• The auxiliary equipment system includes an Agitator to prevent the sedimentation of drilling fluid, a Mud Tank to store and mix drilling fluid, and pumps to provide circulating power for the system.

Working principle and optimization mechanism

After returning from the bottom of the well, the drilling fluid is separated step by step according to the solid particle size from large to small through a vibrating screen, a sand remover, a mud remover, and a centrifuge. The cleaned drilling fluid is re injected into the wellbore to form a circulation, and the system optimizes the separation effect by adjusting parameters such as mesh size, cyclone cone angle, and centrifuge speed.

Four core values

1. Performance guarantee: Reducing the solid content can prevent abnormal viscosity and density of drilling fluid, effectively avoiding engineering risks such as stuck drilling and wellbore instability..
2. Equipment protection: reduces the wear and tear of the solid phase on the drill bit, drilling tool, and pump, significantly extending the service life of critical equipment..
3. Cost control: Reduce drilling fluid processing costs and achieve resource recycling by recycling weighted materials..
4. Environmental Upgrade: Reduce harmful solid phases in waste drilling fluid, lower environmental pollution risks, and align with the trend of green drilling development..

Typical application scenarios

• Land and offshore oil/gas drilling platforms
• Performance maintenance of drilling fluid in geological exploration engineering
• Unconventional oil and gas development projects such as shale gas horizontal wells

Technological development direction

With the development of drilling technology towards deep and complex formations, solid control systems are showing three major trends: integrating sensors to achieve real-time monitoring of drilling fluid performance, automatically adjusting equipment parameters through intelligent algorithms, and combining environmental protection technology to promote zero waste discharge treatment. These innovations will further enhance the efficiency, safety, and sustainability of drilling engineering.

System positioning summary

The solid control system serves as the foundation for drilling engineering; Blood Purification System; The use of efficient solid-phase separation technology to ensure stable drilling fluid performance, while improving operational efficiency and ensuring construction safety, achieves dual optimization of economic benefits and environmental requirements, and is an indispensable core equipment system for modern drilling engineering.