A better solution for vacuum sludge degassing in oil fields

Oilfield vacuum degassers are key equipment used in the oil drilling field to treat gas-leaked drilling fluids. They efficiently remove gas from drilling fluids through negative pressure separation technology, restore mud properties, ensure drilling safety, and improve the efficiency of solids control systems.

Xi'an Tianrui Petroleum's TRZCQ series vacuum degassers are mature products designed for degassing oil drilling mud. In solids control systems, vacuum degassers are generally located after shale shakers to treat residual harmful gases in the mud after separation by the shale shaker, forming a complete purification chain of "shale shaker → vacuum degasser → desander → desilter → centrifuge".

I. Technical Principle: Negative pressure gas-liquid separation, efficient foam breaking and degassing.

The TRZCQ series vacuum degasser creates a negative pressure environment of -0.04 to -0.08 MPa inside the tank using a vacuum pump. The mud is drawn into the tank under atmospheric pressure. A high-speed rotating rotor throws the mud against the tank wall, forming a thin layer that causes air bubbles embedded in the mud to burst. The escaped gas is then drawn by the vacuum pump to a gas-liquid separator and finally discharged through the exhaust pipe. The treated mud is discharged from the tank by the impeller. This process achieves highly efficient gas-liquid separation, restores the mud's specific gravity and viscosity, and stabilizes wellbore pressure.

II. Equipment Advantages: High performance, high adaptability, high security

1. High-efficiency degassing capability

   With a degassing efficiency of over 95%, it can remove more than 95% of free gas and some dissolved gas from the mud, including harmful gases such as methane and CO₂, preventing well kicks or blowouts.

   With a processing capacity ranging from 240 to 360 m³/h, it can meet the needs of drilling projects of different scales.

2. Flexible adaptability

   It supports multiple model selections (such as TRZCQ240, TRZCQ300, etc.), and the tank diameter and processing capacity can be customized to meet complex working conditions such as deep wells and ultra-deep wells.

   It can be integrated into a solids control system and work in conjunction with equipment such as shale shakers, desanders, and centrifuges to form a closed-loop mud management system.

3. Safety and reliability

   The explosion-proof motor and belt drive system are designed with the main motor offset to lower the center of gravity and ensure stable operation.

   Equipped with an intelligent gas-liquid separator to prevent liquid backflow from damaging the vacuum pump; the explosion-proof control cabinet meets ATEX standards and is suitable for complex wells containing harmful gases such as hydrogen sulfide.

   Electrical components are selected from international brands (such as Schneider Electric or Siemens) to ensure long-term stable operation.

4. Environmental protection and economy

   Reduce waste disposal costs: By efficiently recycling sludge, waste disposal costs can be reduced by 55%-90%.

   Extend equipment life: Remove gas and solid particles from the mud, reduce wear on drill bits, drill strings and pump bodies, and lower maintenance costs.

III. Application Scenarios: Covering the entire drilling process and adapting to complex working conditions

1. Oil and gas drilling

   During drilling, drilling mud is susceptible to the intrusion of gases such as methane and CO₂, leading to a decrease in density and changes in viscosity, which affects wellbore stability. The TRZCQ series vacuum degasser can quickly restore the properties of drilling mud and prevent the risk of blowout.

   In natural gas exploration, the separated methane can be recycled and reused, improving energy efficiency.

2. Trenchless Engineering and Geotechnical Engineering

   In scenarios such as horizontal directional drilling and tunnel boring machine (TBM) construction, the mud circulation system needs to be efficiently purified to maintain construction efficiency. The TRZCQ series can be used in conjunction with other solids control equipment (such as vibrating screens and centrifuges) to achieve closed-loop mud management.

3. Wastewater treatment and environmental protection

   In wastewater treatment plants, vacuum degassing technology can remove gases such as hydrogen sulfide from sludge, reduce odor emissions, and improve the working environment.

The selection of a vacuum degasser needs to be determined comprehensively based on factors such as drilling depth, mud processing volume, and gas content. TR Solids Control adopts an integrated design and customized services to provide customers with efficient operational solutions. Its TRZCQ series vacuum degassers, with their advantages of high-efficiency degassing, flexible adaptation, and safety and reliability, have become the preferred brand in domestic and international oil and gas fields and trenchless engineering. 

For further information on specific model parameters or customized solutions, please contact the TR Solids Control technical team for professional support.