Crude Oil Demulsifier for Efficient Oil-Water Separation in Oilfield Production

GN Z-EMUL Series

GN New Chem supplies crude oil demulsifiers formulated to break stable water-in-oil emulsions, accelerate crude oil dehydration, and improve oil-water-interface separation in oilfield production systems. The GN Z-EMUL Series is designed for use in well fluids, gathering systems, separators, heater treaters, dehydration units, storage tanks, and other crude-oil processing facilities.

Demulsifier selection is based on the actual crude-oil properties and operating conditions, including API gravity, water cut, emulsion stability, salinity, solids content, asphaltenes, temperature, residence time, and shear history. GN New Chem can provide standard grades or application-specific recommendations supported by bottle testing, compatibility evaluation, dosage optimization, and field trials.

Product Overview

Crude Oil Demulsifier is a specialty oilfield production chemical used to destabilize and break water-in-oil emulsions. It acts at the oil-water interface to promote water droplet coalescence, faster water settling, cleaner phase separation, and improved crude dehydration. An effective demulsifier program can help reduce basic sediment and water (BS&W), improve separator performance, stabilize downstream processing, and support crude-oil quality requirements.

Because crude composition and production conditions vary from field to field, the optimum product chemistry and dosage should be determined through representative laboratory testing and verified under actual operating conditions.

Main Functions

• Break stable water-in-oil emulsions in produced crude oil.
• Accelerate water droplet coalescence, settling, and oil-water separation.
• Improve crude-oil dehydration and help reduce residual water and BS&W.
• Promote a cleaner oil-water interface and reduce persistent rag layers.
• Support stable operation of separators, heater treaters, dehydration units, and storage tanks.
• Help optimize chemical consumption and overall treatment cost through proper product selection and dosage control.

Features and Advantages

• Application-specific selection: candidate grades are matched to crude composition, water cut, solids, salinity, temperature, and process conditions.
• Fast separation performance: designed to promote rapid emulsion breaking and efficient water release where suitable for the crude system.
• Flexible formulation options: different chemistries and concentrations can be evaluated for light, medium, heavy, waxy, or high-solids crude oils.
• Process compatibility: products can be screened with existing corrosion inhibitors, scale inhibitors, biocides, paraffin-control chemicals, and other production chemicals.
• Bottle-test optimization: comparative testing can be used to evaluate water drop, interface quality, oil clarity, water clarity, and dosage response.
• Field application support: GN New Chem can assist with dosage optimization, injection-point evaluation, and controlled field trials.

Typical Applications

GN Z-EMUL Series crude oil demulsifiers can be considered for a wide range of oilfield production and crude-processing applications, including:

• Wellhead and flowline chemical treatment.
• Oilfield gathering and central processing facilities.
• Two-phase and three-phase separators.
• Heater treaters and electrostatic dehydration systems.
• Crude-oil dehydration and desalting operations.
• Storage tanks and tank-settling systems.
• Heavy crude, high-water-cut, high-solids, or difficult-emulsion treatment programs.

Recommended Use

• Collect representative crude-oil and produced-water samples from the actual operating system.
• Confirm key fluid data such as API gravity, water cut, salinity, solids, asphaltene content, operating temperature, and current chemical program.
• Screen candidate demulsifier grades by bottle test under representative temperature and mixing conditions.
• Evaluate water drop, interface quality, oil clarity, water clarity, BS&W, and separation time.
• Select an injection point that provides sufficient mixing and contact time while avoiding excessive shear after treatment.
• Begin field application using the dosage range established by laboratory testing, then optimize gradually according to separation performance and operating data.

Important: The optimum dosage is system-specific. Always follow the approved TDS, SDS, site chemical-management procedures, and applicable local regulations.

Packaging, Storage and Transportation

• Typical packaging: 25 L pail or 200 L drum for liquid products; other packaging may be available according to project requirements.
• Store in the original sealed container in a dry, well-ventilated area away from incompatible materials, direct sunlight, contamination, and extreme temperatures.
• Prevent freezing where applicable and follow the product-specific TDS and SDS.
• Transportation classification, labeling, and export documentation will be confirmed according to the final formulation, destination country, and shipment method.

Information Needed for Product Selection

To recommend a suitable crude oil demulsifier and testing program, please provide as much of the following information as possible:

• Representative crude-oil and produced-water samples.
• Crude API gravity or density, viscosity, water cut, BS&W, solids content, wax and asphaltene information where available.
• Produced-water salinity, pH, and major ion information where relevant.
• Operating temperature, pressure, residence time, and production rate.
• Separator, heater treater, dehydration, or tank configuration.
• Current demulsifier product, dosage, injection point, and observed performance.
• Main operating problem, such as slow water drop, high residual water, tight interface, rag layer, dirty water, or unstable separation.
• Target crude-oil quality and produced-water quality.
• Expected monthly consumption, preferred packaging, delivery location, and required documentation.

Why GN New Chem

GN New Chem combines specialty chemical supply with practical experience in solids control, separation equipment, oil sludge treatment, wastewater treatment, and oilfield process operations. This integrated background allows our team to consider not only demulsifier chemistry, but also mixing, temperature, residence time, solids loading, separation equipment, and downstream treatment requirements when developing a practical chemical program.

• Application-oriented product selection instead of one-grade-fits-all supply.
• Laboratory bottle testing and comparative product screening.
• Compatibility checks with the customer’s existing chemical program.
• Support for dosage optimization and controlled field trials.
• Standard grades and project-specific formulation options.
• Flexible packaging and international supply support.

Request a Crude Oil Demulsifier Recommendation

Send GN New Chem your crude-oil sample, operating data, current treatment program, and separation target. Our team can recommend suitable GN Z-EMUL Series crude oil demulsifier candidates, define a bottle-test procedure, support dosage optimization, and prepare a commercial supply proposal for your application.