Unitech Chemicals is a professional manufacturer of oilfield drilling fluid additives, specializing in high-performance oil-based drilling fluid (OBM) systems for global oil & gas operations.
We provide engineered additive solutions for HPHT wells, offshore drilling, and complex formations, ensuring stable emulsion systems, optimized rheology, and long-term drilling performance.
· Advanced emulsifier system design (Primary / Secondary / One-drum systems)
· Customized OBM formulation based on formation data
· Laboratory testing & optimization (24–48h response)
· Full documentation: COA / SDS / TDS
· Stable global supply & logistics support
· International oilfield service companies
· Drilling fluid service providers & engineers
· Oil & gas procurement & technical teams
Oil based drilling fluids deliver superior performance, but require precise formulation to maintain emulsion stability, rheology control, and thermal resistance under extreme conditions.
Challenges | Impact | Optimized Solutions |
Emulsion Instability | Phase separation, fluid failure | Primary & secondary emulsifiers |
High Temperature Breakdown | Property degradation in HPHT wells | High-temperature emulsifier systems |
Poor Rheology Control | Inefficient hole cleaning | Rheology modifiers |
Wetting Failure | Poor solids dispersion | High-performance wetting agents |
Oil-based drilling fluid is a drilling system where oil serves as the continuous phase, forming a stable water-in-oil emulsion.
Compared with water-based systems, OBM provides:
· Superior lubrication
· Higher thermal stability
· Strong shale inhibition
· Lower fluid loss under HPHT conditions
Different base oils determine OBM performance:
Project: Offshore HPHT Drilling
Challenge:
Severe shale instability and high-temperature fluid degradation
Solution:
Customized OBM system with high-temperature emulsifiers and optimized rheology modifiers
Results:
· 40% reduction in fluid loss
· Improved emulsion stability
· Reduced NPT
· Increased drilling efficiency
Feature | Oil-Based | Water-Based |
Lubricity | Excellent | Moderate |
Thermal Stability | High | Moderate |
Cost | Higher | Lower |
Environmental Impact | Higher | Lower |
Formation Stability | Excellent | Moderate |
Understanding OBM performance requires monitoring key parameters:
Parameter | Typical Range | Significance |
Electrical Stability | High | Emulsion stability indicator |
HTHP Fluid Loss | Low | Filtration control |
Density | 8.5–18 ppg | Pressure balance |
Rheology | Stable | Hole cleaning efficiency |
Superior lubrication, thermal stability, and shale inhibition.
Yes, especially synthetic-based systems designed for environmental compliance.
Yes, with proper treatment and maintenance.
By reducing friction, stabilizing formations, and minimizing fluid loss.
Yes, our solutions are designed to match or exceed leading suppliers while offering cost advantages and stable supply.
