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A chemical used in the preparation and maintenance of an oil or synthetic-base drilling fluid that forms a water-in-ofemulsion (invert emulsion). An oil-mud emulsifier lowers the interfacial tension between oil and water, which allows stable emulsions with small drops to be formed. Historically, oil-mud emulsifiers have been classified as primary and secondary. Secondary emulsifiers are generally not used alone to make a stable oil mud. These emulsifiers surround water droplets, like an encapsulating film, with the fatty acid component extending into the oil phase. Emulsifier molecules that cannot fit around drops form clusters (micelles) in the oil phase or adsorb onto solids. Oil-mud emulsion drops each behaves like a small osmotic cell. The emulsifier around the drops acts like a semi-permeable membrane through which water can move but ions cannot pass. Thus, oil muds have a special capability (which water muds do not have) to control water transfer to and from the drops simply by adjusting salinity within the water phase of the oil mud.
However, conventional OBMs have two drawbacks that cannot be ignored. One is their high costs, and the other is their adverse impacts on the environment. Since the 1990s, environmental laws and regulations in many countries have been becoming stricter. This reduced the usage frequency of conventional OBMs sharply. As an appropriate response to this, environmentally friendly emulsifiers were developed. Not only can they provide operational performances like conventional OBMs, but also, they have low toxicity and good biodegradability.
We manufacture a range of green oil-mud emulsifiers which have been classified as primary and secondary
GPEMUL is a formulated blend of emulsifiers for use as a primary emulsifier in the invert drilling mud system.
GPEMUL is a liquid blend of selected primary emulsifiers. It is used to emulsify water into oil in oil/diesel-based drilling fluids. It provides excellent emulsion stability and acts as a wetting agent, gelling agent, and fluid stabilizer in a mineral oil base. It is also used for filtration control and for temperature stability.
GPEMUL is an invert mud primary emulsifier. It is designed to improve the oil-wet ability of drilling solids and increase the stability of the oil mud by primary emulsification between the liquid phases. It assists the performance of the invert emulsifiers by encircling each solids particle with an oil layer, hence preventing emulsion break down due to solids water wetting, thereby keeping stability high.
Applications
GPEMUL should be applied as a primary emulsifier to provide mud stability (as measured by fluid loss and ES reading)
The levels of GPEMUL used are a function of required performance in terms of temperature. It is sufficient to give a stable emulsion and provide a good base for the secondary emulsifier to do the tuning. The use of GPEMUL will provide the stability of the mud, and tighten the control of the fluid loss, as well as imparting high oil wetting ability. When drilling through magnesium formation, the use of an emulsifier for the GSEMUL range is required to give stable fluid properties under bottom-hole conditions.
GPEMUL produces stable emulsions that are resistant to high temperatures and contamination. GPEMUL imparts good fluid loss properties to the mud. Lime is required to fully activate the emulsion and provide tight fluid loss control. It is recommended that GPEMUL be used in conjunction with GSEMUL in order to produce invert muds that have excellent emulsion stability with a variety of base oils.
GPEMUL is used as a primary emulsifier providing an Excellent and very Stable Emulsion and oil-wetting agent. It contributes to temperature stability and HTHP filtration control and is most effective over a wide range of temperatures and also in the presence of contaminants. It provides viscosity and filtration control and temperature stability.
GPEMUL is packaged in a 220-liter polyethylene or steel drum. Customized packaging is also available on request.
GPEMUL store in a dry, well-ventilated area. Keep the container closed. Keep away from heat, sparks, and flames. Store away from incompatibles. Follow safe warehousing practices regarding palletizing, banding, shrink-wrapping, and/or stacking.
GPEMUL has a shelf life of at least six months from the date of manufacture when stored in the original sealed containers in a cool and dry place.
GPEMUL must be handled as an Industrial chemical, wearing protective equipment and observing the precautions as mentioned in the MSDS.
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