Oil-Based Drilling Fluid Chemical Guide
Petroleum Drilling Mud Chemicals — China Manufacturer
A practical B2B guide to primary emulsifiers, secondary emulsifiers, multifunctional emulsifiers, organophilic bentonite and high-temperature rheology for oil-based mud systems.
Oil-based drilling mud is widely used in challenging wells where lubricity, shale stability, thermal resistance, and wellbore protection are critical. But the performance of an OBM system depends on the chemical package behind the base oil. A professional petroleum drilling mud chemicals China manufacturer should be able to explain how emulsifiers and rheology modifiers work together, not simply sell individual products.
Puyang Jinxiang Chemical supplies a focused line of oil-based drilling fluid chemicals for international drilling contractors, service companies, distributors, and chemical buyers. The key products include primary emulsifier, secondary emulsifier, multifunctional emulsifier, organophilic bentonite, and high-temperature organophilic bentonite.

Primary Emulsifier: Building the Invert Emulsion
The Oil-Based Mud (OBM) Primary Emulsifier is the foundation of the water-in-oil emulsion. Its job is to help disperse the internal brine phase into the external oil phase and maintain a stable invert emulsion under drilling conditions.
A well-performing primary emulsifier helps support electrical stability, emulsion integrity, fluid-loss control, and a consistent mud structure. According to SLB’s primary emulsifier reference, a primary emulsifier is commonly used together with a suitable secondary emulsifier, organophilic clay, and filtration-control additive in oil-based fluid systems.
Secondary Emulsifier: Reinforcing Stability and Wetting
The Secondary Emulsifier for Oil-Based Mud complements the primary emulsifier. Its role is to strengthen long-term emulsion stability, improve oil-wetting behavior, and help maintain system performance when temperature, solids loading, or contamination increase.
SLB’s secondary emulsifier technical page similarly describes secondary emulsifiers as part of a complete invert-emulsion package rather than as a stand-alone additive.
Multifunctional Emulsifier: A More Integrated Treatment Option
The Multifunctional Emulsifier for Oil-Based Mud combines several treatment functions in one product. It can simplify inventory and field treatment where buyers want a more integrated emulsification and wetting package.
This does not mean one product automatically replaces every additive in every mud system. Suitability still depends on oil/water ratio, brine salinity, density, temperature, solids loading, and the performance target. Laboratory evaluation remains essential before a bulk order.
Organophilic Bentonite: Rheology, Suspension and Hole Cleaning
The Organophilic Bentonite for Oil-Based Mud is used to build rheology in non-aqueous drilling fluids. It supports viscosity, gel structure, solids suspension, and the carrying capacity needed to transport drilled cuttings.
Organophilic clay is especially important for reducing the risk of barite sag during static or low-shear periods. The SLB Energy Glossary notes that organophilic bentonite is used in oil muds to build rheology for cuttings lifting and solids suspension.
High-Temperature Organophilic Bentonite
For deeper and hotter wells, Bentonite organique résistante aux hautes températures provides a more thermally robust option. It is relevant where standard organophilic clay loses suspension efficiency after thermal aging or where the mud needs stronger rheological support under elevated temperature.
How the OBM Chemical Package Works Together
| Produit | Main Function | Typical Concern |
|---|---|---|
| Primary Emulsifier | Forms stable invert emulsion | Emulsion formation and electrical stability |
| Secondary Emulsifier | Supports stability and wetting | Temperature, solids and contamination |
| Multifunctional Emulsifier | Integrated emulsification/wetting | Simplified treatment package |
| Organophilic Bentonite | Rheology and suspension | Hole cleaning and barite sag |
| High-Temperature Organophilic Bentonite | Thermally stable rheology | Deep and high-temperature wells |
What International Buyers Should Include in an RFQ
To receive a meaningful technical recommendation, buyers should provide oil/water ratio, base-oil type, brine salinity, expected temperature, mud density, current electrical stability, solids loading, required quantity, packaging, and destination port. This information helps the supplier recommend a more appropriate OBM chemical package.
Pourquoi choisir Jinxiang Chemical ?
Puyang Jinxiang Chemical supplies the core chemistry required for oil-based mud systems and supports international buyers with product information, technical documentation, and commercial quotations. A complete line helps simplify purchasing and gives the buyer one point of contact for emulsification and rheology requirements.
Foire aux questions
1. What is the difference between a primary and secondary emulsifier?
The primary emulsifier mainly builds the invert emulsion, while the secondary emulsifier reinforces stability and oil-wetting performance.
2. Can a multifunctional emulsifier replace both primary and secondary emulsifiers?
It may simplify some systems, but the final decision should be based on laboratory testing under the actual oil/water ratio, salinity, temperature, and solids loading.
3. Why is organophilic bentonite important in OBM?
It helps build rheology, suspend barite and drilled solids, and improve carrying capacity and hole cleaning.
4. What causes low electrical stability in oil-based mud?
Possible causes include an unbalanced emulsifier package, water contamination, excessive solids, unsuitable salinity, or insufficient treatment. The full mud system should be checked rather than adding emulsifier blindly.
5. How should organophilic bentonite be evaluated?
Evaluate rheology, low-shear suspension, thermal aging, barite suspension, and overall mud behavior rather than only measuring bulk viscosity.
6. What data should I send before requesting a quotation?
Send oil/water ratio, brine type and salinity, temperature, mud density, current additives, required quantity, packaging, and destination port.
Looking for Oil-Based Drilling Mud Chemicals from China?
Send your OBM system details, operating conditions, product requirements, quantity, and destination port for product information and a quotation.
