When drill in narrow hydraulic window with applications of offshore and deepwater wells, the drilling fluid is challenged to meet performance requirements of consistently low equivalent circulating density (ECD) management in low temperature near sea floor at 40°F and thinner rheology profile with efficient hole cleaning for reduced torque & drag in high temperature up to 350°F, avoiding excessive surge & swab pressures when trip in/out, mitigating pressure spikes due to pump initiation pressures. This is so-called flat rheology fluid properties. It demonstrates with reduced potential of lost circulation, improved ROP, no barite sag issue when operations are paused and mud is left static in the hole for extended period of time.
The REOECD® flat rheology synthetic-based drilling fluid system is ideal for the most challenging drilling conditions with significant geology, depth, pressure and temperature variations in both offshore deepwater wells and critical onshore wells when encountering weak zones in highly complex geological settings.
The REOECD® system is designed with innovative combination of viscosifiers and micronized barite suspension package to achieve proper ECD management with a thin rheology profile. It enables maximum flow rates and subsequent highest rate of penetration (ROP), reducing mud loss, sufficient hole cleaning, faster tripping speed, improved cementing for enhanced well integrity.
* New-generation high-performance non-aqueous fluid system providing low and controlled ECDs for offshore deepwater and critical onshore drilling conditions
* Innovative combination of viscosifiers and suspension technology create a “rapid-set/easy-break” gel strength, engage viscosity at low shear rates and disengage at high shear rates
* Flat rheology for thermal and pressure stability between 40°F and 350°F
* Consistent performance in both low- and high-temperature sections of the well
* Lower ECD spikes for reduced risk of lost circulation and ballooning
* Low ECD for narrow-margin drilling and suitable for overbalanced conditions
* No density variations and lower sag tendencies in high angle wells
* Enhanced hole cleaning for reduced torque and drag
* Increased ROP due to wider hydraulic window
* Faster tripping
* Improved cementing for enhanced well integrity
* The system can be flexibly engineered with novel clay-free and nano-additives to deliver maximum protection and performance for the wellbore and reservoir
Specific components include:
REOMUL® - concentrated emulsifier specially designed for REOECD® system that provide stable emulsion stability, filtration control and thermal stability.
NEOVIS® - polymeric viscosifier that increase low end rheology while providing suspension and hole cleaning capacities without using clay-base additives.
NEOMOD® - modifies the rheological profile of oil-based muds, increasing the shear-thinning and thixotropic characteristics without using clay-base additives.
BENVIS® 63 - rheology modifier that increase low end rheology while providing suspension and hole cleaning capacities in invert emulsion drilling fluids. It is highly effective in improving the 3 rpm and 6rmp readings of oil-based drilling fluid without increasing the plastic viscosity.
NEOTROL® - polymeric filtration control additive is a white free-flowing powder product that can provide filtration control in diesel, mineral and synthetic-based drilling fluids up to 350°F(180°C).
To ensure that the fluid formulation truly meets your required specifications, SHARK’s expert will work with you to pilot test the fluid before fully deploying it as part of your drilling program.
¬ The amount of each above product added into the formulation is g or ml to mix 350 ml (1bbl) volume sample.
¬ Either Saraline 185V is used as base oil for REOECD® system.
¬ Use Consistant 6/3 readings value and Gels are obtained between 40°F and 150°F.
¬ Pilot testing should be performed to determine the exact amount of each product used in a particular formulation under elevated temperatures.
¬ 1ppb = 2.857kg/m3, 1ppb = 1g/350ml
¬ 1.0sg = 8.345ppg
¬ The amount of each above product added into the formulation is g or ml to mix 350 ml (1bbl) volume sample.
¬ Either Saraline 185V is used as base oil for REOECD® system.
¬ Use Consistant 6/3 readings value and Gels are obtained between 40°F and 150°F.
¬ Pilot testing should be performed to determine the exact amount of each product used in a particular formulation under elevated temperatures.
¬ 1ppb = 2.857kg/m3, 1ppb = 1g/350ml
¬ 1.0sg = 8.345ppg
¬ The amount of each above product added into the formulation is g or ml to mix 350 ml (1bbl) volume sample.
¬ Either Saraline 185V is used as base oil for REOECD® system.
¬ Use Consistant 6/3 readings value and Gels are obtained between 40°F and 150°F.
¬ Pilot testing should be performed to determine the exact amount of each product used in a particular formulation under elevated temperatures.
¬ 1ppb = 2.857kg/m3, 1ppb = 1g/350ml
¬ 1.0sg = 8.345ppg
