Non-Aqueous Drilling Fluid Systems

Baroid has led the advancement of non-aqueous fluid technology, from introducing the very first non-aqueous fluid, to the development and introduction of the award-winning high-performance fragile gel systems that offer significant performance improvements.

Baroid applies a customized approach when developing fluids, allowing the flexibility to continually address the latest and most pressing drilling challenges, such as reaching deeper, hotter, more remote reservoirs, ECD management, and extended reach applications. This approach has led to the development of our latest specialty high-performance systems, including BaraECD® fluid for application in extreme narrow margin windows, and BaraPure® salt-free fluid for use in areas with strict environmental regulations.

BaraECD® High-Performance Non-Aqueous Fluid System
Halliburton’s BaraECD® High-Performance Non-Aqueous Fluid System has a rheological profile designed to provide low, controlled Equivalent Circulating Density in wells with extreme narrow pore pressure/fracture gradients, reducing the risk of drilling induced fractures.
BaraPure® Salt-Free, High-Performance Non-Aqueous Fluid System
BaraPure® Salt-Free, High-Performance Non-Aqueous Fluid System provides operators a salt-free, fragile gel fluid system to help improve drilling performance and reduce overall AFE in technically challenging wells and locations with strict environmental regulations
Non-Aqueous Fluid Descriptions and Applications

Non-Aqueous Fluid Descriptions and Applications

Learn more about Baroid’s customized non-aqueous based fluids.

Non-Aqueous Drilling Fluid Systems

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Summary Summary ENCORE® BASE - Product Data Sheet
ENCORE® BASE fluid is 100% isomerized olefin-based fluid which is designed to have acceptable environmental compliance for the Gulf of Mexico standards that allow cuttings discharge.
Summary Summary ACCOLADE® BASE Base Fluid - Product Data Sheet
ACCOLADE® base fluid is an ester/internal olefin blend created to have the highest level of environmental performance along with superior rheological properties in the ACCOLADE High-Performance drilling fluid system. The ACCOLADE base oil can be used in applications up to 300°F (149°C). Use of ACCOLADE drilling fluids allows for cutting discharge in Gulf of Mexico (GOM) applications.
Summary Summary Kazakhstan: INNOVERT® System Used in Well’s Record-Breaking Performance
An operator working in the Karachaganak field was looking for an innovation that would optimize the incumbent drilling program in an effort to further reduce costs and improve the efficiency of the stimulation process.
Summary Summary XP-07™ BASE Base Fluid - Product Data Sheet
XP-07™ synthetic paraffin base fluid is a pure normal alkane mixture. The low kinematic viscosity of the fluid makes it easier to manage the rheological profile, thus having the ability to exhibit higher low end rheology. XP-07 base fluid is suitable for use in all ENVIROMUL™ and INNOVERT® drilling fluid applications and is particularly suited to North Sea HTHP applications. XP-07 base fluid is used to produce drilling fluids stable at temperatures beyond 420°F (215°C) and is highly biodegradable under aerobic and anaerobic conditions. XP-07 base fluid is also an excellent choice for applications where thermal desorption units will be used to recover base fluid
Summary Summary BaraPure® Drilling Fluid System - Sales Data Sheet
BaraPure® salt-free, high-performance non-aqueous fluid system provides operators a salt-free, organophilic clay-free fluid system to help improve drilling performance and reduce overall AFE in technically challenging wells and locations with strict environmental regulations.
Summary Summary INNOVERT® fluid demonstrates stability and resilience
INNOVERT® fluid demonstrates stability and resilience in challenging deepwater Angola project
Summary Summary ENVIROMUL™ system helps operator drill wells in record time
Well Drilled in 29 Days with ENVIROMUL™ Oil-Based Fluid, 31% Faster than Previous Record Well in Field
Summary Summary ENCORE Fluid System - Sales Data Sheet
Over 30 years ago, Baroid Fluid Services was the first to use organophilic clay in invert emulsion drilling fluid systems. Now, in the award-winning family of systems based on ACCOLADE® fluid technology, we are the first to take it out. ENCORE® fluid is an internal olefin (IO) system formulated with zero organophilic clay. Like its predecessor—the ACCOLADE system—ENCORE fluid provides unique high-performance benefits while minimizing downhole losses.
Summary Summary BaraECD® Drilling Fluid System Designed for Low ECD Applications - Sales Data Sheets
Baroid's BaraECD® Drilling Fluid System Designed for Low ECD Applications was designed to provide low controlled ECD in wells with a narrow margin between the pore pressure and fracture gradient, while also providing necessary hole cleaning and resistance to barite sag.
Summary Summary BaraPure® Salt-Free NAF System Improves Performance in Canada
BaraPure® Salt-Free NAF System Successfully Drills 8,900 Meters in Unconventional Field
Summary Summary Optimized Fluids Help Operator Save $2.96 Million
Solution saves 37 days of drilling time, achieving field record
Summary Summary Baroid Helps Operator in Norway Save US$679,000 on Offshore Well
High-Performance Non-Aqueous Fluid Systems and Applied Fluids Optimization Service help Operator save US$679,000 in Norway
Summary Summary INNOVERT® OBM helps operator successfully drill 2,800-m salt sequence
Clay-free INNOVERT® OBM system helps operator drill deepwater wildcat well with 2,800-m salt sequence
Summary Summary INNOVERT® HPOBM and STEELSEAL® LCM overcome saltwater influx, concurrent losses
INNOVERT® HPOBM AND STEELSEAL® LCM HELP OPERATOR OVERCOME SALTWATER INFLUX, CONCURRENT LOSSES
Summary Summary BaraECD® fluid and AFO service help limit downhole losses
BaraECD® fluid and AFO service help reduce downhole losses by more than 60% in critical well, saving $5 million
Summary Summary A drilling fluid from Halliburton’s Baroid business combines new emulsion chemistries with polymers to extend the operating environment of a drilling fluid for high-pressure, high-temperature conditions.
Baroid introduced BaraECD in 2012 for use in narrow margin drilling operations in the Gulf of Mexico.
Summary Summary Customized NAF, Optimized Solids Control, and STOPPIT® LCM Help Save over USD 1 Million in One Year
Provide effective cure for severe losses in large fractures
Summary Summary BaraXcel™ HP NAF System Helps Drill Reactive Shales and Abrasive Sandstones with Improved ROP
The wells in northwest Saudi Arabia encounter highly reactive sloughing shales that are followed by abrasive sandstones. These reactive shales pose serious wellbore stability issues and if not managed appropriately can lead to wellbore collapse, hole cleaning issues, stuck pipe incidents, and even lost circulation due to high ECDs (Equivalent Circulating Densities).
Summary Summary Organoclay-Free Fluids Enable Operator to Drill and Complete Slim-Profile Well in Record Time
Baroid Fluid Systems and AFO Service help narrow ECD window in mature well
Summary Summary Optimized ENVIROMUL™ Fluid and WellSET® Treatments Help Save Costs on Horizontal Monobore Well
In a horizontal well profile, a monobore design is drilled as a single-diameter hole from the surface casing to total depth (TD).
Summary Summary BaraECD® NAF Delivers Consistent Wellbore Stability in Deepwater Well, Saving 24 Days of Rig Time
High-Performance Fluid System Optimizes Drilling Operation
Summary Summary BaraECD® NAF Enables Operator to Use One Fluid for All Drilling Intervals
Baroid Fluid Solution optimizes drilling operations
Summary Summary BaraECD® System Delivers Low ECD and Stable Wellbore in Narrow-Window Shale Lateral
High-Performance system provides substantial savings
Summary Summary Operator Overcomes Lost Circulation Problems
BaraECD® High-Performance Non-Aqueous Fluid helps complete trouble-free cementing operation
Summary Summary Customized High-Performance NAF Delivers Stable HPHT Wellbore, Saving Significant Time and Cost
Enable operator to drill to total depth with minimal disruption and to obtain accurate logs of the reservoir, despite these conditions: » Highly reactive shale » Abnormal pressures » Depleted zones
Summary Summary BaraECD® Fluid Significantly Reduces Costs in Completion Operation
Baroid Drill-In Fluid enables operator to save three days of rig time
Summary Summary ENCORE® NAF System Drills Deep Depleted Sand with Zero Losses in Deepwater GOM
A known depleted zone was causing severe lost circulation on deepwater wells in this field.
Summary Summary Clay-Free INNOVERT® IEF Eliminates Instability in Buildup Section, Saves 94 Hours and $470K
A highly reactive shale caused wellbore instability in the buildup section of the directional wells. Significant nonproductive time (NPT) was attributed to the need for frequent wellbore conditioning trips and stuck pipe incidents. The wells were being drilled with a conventional invert emulsion fluid (IEF) system with oil/water ratios (OWR) of 80/20 or higher.
Summary Summary ENVIROMUL™ HT Drilling Fluid and WellSET® Treatment Prevent Losses in HPHT Reservoir with Depleted Zone
The HPHT reservoir contained a depleted zone that posed a high risk of severe lost circulation.
Summary Summary BaraECD® Non-Aqueous Fluid System Helps Customer Reach Reservoir in The Netherlands
A Dutch operator was faced with the challenge of drilling various slimhole wellbores containing a narrow hydraulic window into the Carboniferous-aged Rotliegend reservoir formation in the North Sea, offshore the Netherlands. The well targets were reached by first drilling through the Zechstein salt formation and the Silverpit and Lower Slochteren formations, which are all depleted formations.
Summary Summary Canada: Optimized Brine and ENVIROMUL™ Fluids Help Cut Drilling Days of Pacesetter Shale Well By 32 Percent
Through careful collaboration and the use of optimized drilling systems, the operator was able to drill the well in 9.2 days, saving 4.4 days valued at approximately USD 639,000.
Summary Summary INNOVERT® Invert Emulsion Fluid System Optimizes Drilling Phases in Main and Lateral Hole Sections of Montney Wells
In 2009, while drilling horizontal wells in the Pouce Coupe field to produce gas from the Montney shale formation, Talisman Energy challenged Halliburton to eliminate the use of two different fluid systems in the main and lateral hole sections and to reduce drilling costs by realizing the benefits of a single system.
Summary Summary BaraECD® Fluid System and WellSET® Wellbore Strengthening Treatment Solve Deepwater Subsalt Drilling Challenges
Offset well data indicated that an operator would encounter a high-pressure subsalt sand between the base of salt at 19,200 feet (5,852 meters) and 19,700 feet (6,005 meters) measured depth (MD). A severely depleted sand was known to follow at 19,797 feet (6,034 meters) MD. Controlling equivalent circulating density (ECD) while drilling these sands would be critical to avoiding significant down time.
Summary Summary High-Performance BaraECD® Fluid System Enables Operator to Drill Successfully on Slim-Hole HPHT Well in Bolivia
An operator in San Isidro, Bolivia, needed to performa reentry of an existing well. This well was abandoned previously due to high pump pressure values when drilling with a standard invert emulsion fluid (IEF) system; also, due to casing integrity issues in the original wellbore, a 7-inch casing was set back to surface, making it far more difficult to minimize the equivalent circulating density (ECD) value due to the tight annular clearance over the entire well.
Summary Summary INNOVERT® Solution Enables Operator to Complete Long Lateral Section in Combo Well
During well planning the customer decided to extend the well’s horizontal reservoir section from 17,751 ft (5,411 meters) to 27,751 ft (8,459 meters), with a lateral section of 18,674 ft (5,692 meters). This operation was the first time the customer had combined two reservoir intervals, and it involved running and installing the longest liner section in the UAE at the time: 18,824 ft (5,738 meters) of a 6-5/8-inch slotted liner.
Summary Summary ENVIROMUL™ HT Invert Emulsion Fluid System Enables Operator to Successfully Drill HPHT Well in North Sea
An operator was planning to drill the first subsea highpressure/ high-temperature (HPHT) well in the North Sea for several years. The operator challenged Baroid to provide a fluid solution that would allow for drilling the 8 1/2-in reservoir section from 13,910 feet (4,240 meters) (cased depth) to 14,859 feet (4,529 meters) without exceeding a drilling window of 1.5 lb/gal, which would risk fracturing formation at the casing shoe.
Summary Summary Saudi Arabia: INNOVERT® OBM System Remains Stable During Seven-day Logging Operation
System eliminates need for mud conditioning trip, saving time and money.
Summary Summary North Sea: INNOVERT® oil-based fluid success on North Sea horizontal well for 16-in, 12 1/4-in, and 8 1/2-in. sections
The challenge was to drill an 18,000 ft (5,486 m) well into a chalk reservoir at a 90 degree inclination where high losses had been experienced on previous wells in the field.
Summary Summary Innovative Sag-Resistant Fluid Provides Cost-Effective Drilling Solution for High-Angle Wellbore
Months of development and collaboration with the GOM operator yielded an enhanced fluid system that could meet each of the challenges presented by this extremely difficult wellbore.
Summary Summary BaraECD® System Enables Operator to Drill and Complete Difficult Well
The operator drilled the production interval and experienced some losses due to low pressure sand. Baroid lost circulation pills were pumped and the sand was sealed off and losses cured. The challenge was to run and cement the production string without mud losses, as mud losses of over 50% would require the liner top to be squeezed. With an 11.6 ppg equivalent sand pressure and surface mud density of 15.0 ppg the differential pressure across the sand was 3,786 psi
Summary Summary BaraECD® High-Performance Fluid System Enables Operator to Successfully Drill MPD Well
On the Ensco 82 rig located in the Gulf of Mexico in 2012, the operator was drilling a managed-pressure-drilling (MPD) well in a depleted sand formation in the South Timbalier field.
Summary Summary High-Performance Fluid System Enables Low-Pressure Circulation During Challenging Scab-Liner Run
Major operator recently attempted to run and cement a 12,000-ft scab liner in a well located in the Gulf of Mexico (GOM).
Summary Summary Netherlands: Hollow-Glass Spheres allow Drilling Fluid Densities as Low as 0.8 SG
An operator intended to develop a low pressure gas reservoir in a sandstone formation and the reservoir had been depleted by previous production. The fracture gradient, already low in the virgin reservoir, was anticipated to be significantly reduced. Lost circulation and formation damage were recognized as significant drilling hazards. A low density drilling fluid was required to drill and complete the low pressure environment.
Summary Summary Malaysia: Designed ENVIROMUL HT Invert Emulsion Fluid Provides Effective Solution for Controlling ECD on Well with Narrow Drilling Window
Baroid Fluid Services personnel engineered ENVIROMUL HT IEF, a customized invert emulsion fluid system that used fine grind 4.4 SG Barite as the weighting agent. The fluid was specifically engineered to provide ECD control in narrow margin wells while maintaining a low Sag Factor.
Summary Summary Sag Resistant, Economical Fluid Solution for Narrow Margin, Depleted Permeable Zone, High Angle Wellbore
This offshore application presented challenges that included a narrow operating window, high inclination and a depleted permeable zone with serious mud losses.
Summary Summary Congo: Successful INNOVERT® Fluid Application in Congo Operations
An offshore operator in the Republic of Congo was implementing an open hole expandable sand screen completion strategy. Risks identified included screen plugging, potential for formation damage, and increased costs.
Summary Summary BaraXcel™ 4 BASE
BaraXcel 4 BASE fluid (formerly known as ENCORE® Base) is 100% isomerized olefin-based fluid which is designed to have acceptable environmental compliance for the Gulf of Mexico standards that allow cuttings discharge.
Summary Summary BaraXcel™ 5 BASE
BaraXcel 5 base fluid (formerly known as ACCOLADE® Base) is an ester/internal olefin blend created to have the highest level of environmental performance along with superior lubricity and rheological properties in the BaraXcel high-performance drilling fluid system.
Summary Summary Invert Emulsion Drilling Fluid Systems
Since being introduced in the 1960s, invert emulsion drilling fluids have become widely used in the oil and gas industry to help maximize drilling penetration rates, enhance wellbore stability and increase lubricity in directional and horizontal wells.
Summary Summary Non-Aqueous Drilling Fluid Systems
Baroid has led the advancement of non-aqueous fluid technology, from introducing the very first non-aqueous fluid, to the development and introduction of the award-winning high-performance fragile gel systems that offer significant performance improvements.
Summary Summary BaraECD® High-Performance Non-Aqueous Fluid System
Halliburton’s BaraECD® High-Performance Non-Aqueous Fluid System has a rheological profile designed to provide low, controlled Equivalent Circulating Density in wells with extreme narrow pore pressure/fracture gradients, reducing the risk of drilling induced fractures.
Summary Summary BaraPure® Salt-Free, High-Performance Non-Aqueous Fluid System
BaraPure® Salt-Free, High-Performance Non-Aqueous Fluid System provides operators a salt-free, fragile gel fluid system to help improve drilling performance and reduce overall AFE in technically challenging wells and locations with strict environmental regulations
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