MAXDIRECT: Brine-Diesel Emulsion System


Anchor USA’s MAXDIRECT system is built from oil (diesel) emulsified into water (brine). This emulsified mud system brings an alternative to the common brine system used in many wells. MAXDIRECT incorporates a power emulsifier and polymer to provide a wide range of viscosities and rheologies, along with increased rates of penetration (ROP), improved lubricity, and the elimination of the need to dilute the fluids system to control mud weights due to elevated chloride concentrations.  

System Components & Additives

Bentonite Premium, a high-purity, high-surface area untreated bentonite, is specified for use with MMO products. When a DRILSMOOTH product is added to a Bentonite Premium slurry, a unique cationic complex is formed which produces a very high yield point fluid with extreme shear-thinning characteristics.

QSTAR ENV/HT is a carboxymethyl starch manufactured as a filtration control agent for water-based drilling and completion fluids.  QSTAR ENV and HT provide excellent compatibility in a wide range of saline environments. 

QXAN is a high molecular weight, xanthan gum biopolymer, viscosifier and suspension control agent effective in fluid systems with broad pH (7.0 to 11.0) ranges, tolerating common ionic contaminants up to, and exceeding, 1000 ppm. The product is a superior low shear rate viscosifer, exceeding conventional biopolymers in most fluid environments and resulting in excellent suspension and hole cleaning properties.

QPAC LV is a polyanionic cellulosic polymer, specifically designed to reduce the filtration rate of solids-laden water-based fluids where an increase of viscosity is undesirable, while avoiding an appreciable increase in the rheological properties of the fluids system.  

QMUL DIRECT is an emulsifier/surfactant designed to internally emulsify various hydrocarbons, including but not limited to diesel, in fresh or saltwater. A unique and powerful water external microemulsion is the end result.

We Deliver, No Excuses


Superior yield point and low gel strengths

Eliminates the need to use multiple fluids systems in the production intervals

Eliminates the need to set a string of casing below the salt section

Improved ROP and lubricity

Minimizes washout in the salt section

Emulsion remains constant with little to no separation

Ability to maintain lower mud weights to minimize mud losses

30% - 70% by volume hydrocarbon in the internal phase


Water-Based Systems






PropertyTypical RangeMin/Max Recommended
Fluid Weight, ppg (kg/m3)7.2 – 8.0As required
Plastic Viscosity, cP15 - 2510/30
Yield Point (lb/100ft2)10 - 3010/40
Gels 10”/10” (lb/100ft2)5/10 - 15/255/15 - 20/30
OWR30/70 - 70/3020/80 - 70/30
API Fluid Loss (ml/30min)3.0 - 8.0Max 10.0
pH8.5 - 10.08.0 - 10.5
Calcium (mg/l) 40 - 120< 240