N-FLOW™ Delayed Action
Filter Cake Breaker
EXTERNAL SALES PRESENTATION
Customer Challenge
Producing the well at
maximum potential
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Customer Challenge
Incomplete filter cake removal
may result in:
▌ Formation damage
▌ Decreased production and
injection rates
 Increased costs
 Increased rig time
 Chemical costs
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Traditional Acid Breakers
Traditional acid breakers can:
▌ Expose corrosive acids, which can
lead to HSE issues
▌ Provide uncontrolled and localized
reaction
▌ Increase the risk for wormholing
▌ Require specialized trucks, tanks and
equipment
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Baroid’s Solution – N-FLOW™ Filter Cake Breakers
N-FLOW™ breakers offer a delayed
reaction, providing uniform distribution,
reducing the risk of ‘hot spots’, and
preventing the risk of corrosion and
formation damage.
▌ Oil and water-based filter cakes
▌ For formations with a wide range
of temperatures and pressures
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N-FLOW™ Filter Cake Breakers Value Proposition
▌ N-FLOW™ Delayed Action Filter
Cake Breaker can effectively
remove filter cake with an in-situ
reaction, leading to reduced
formation damage and increased
production.
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N-FLOW™ Filter Cake Breakers Applications
▌ Horizontal wells
▌ Open hole gravel pack
▌ Injector wells for filter cake
removal
▌ Sandstone, dolomite, and
limestone formations
▌ Deepwater applications
▌ Workover and completion
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Key Features
▌ Neutral pH at surface
▌ In-situ reaction
▌ Uniform distribution for even removal
▌ No downhole “hot spots”
▌ Removes wormholing potential
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Key Features
▌ Controlled corrosion risk
▌ Does not require special trucks,
tanks or equipment
▌ All components are environmentally
acceptable
▌ Can be mixed in the surface rig pit and
pumped down-hole
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Filter Cake Deposition and Removal Process
one
Deposit filter
cake during
drilling.
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two
Clean wellbore
and prepare for
filter cake
removal.
three
Displace to
wellbore fluid
containing
N-FLOW™
breaker.
10
four
five
Reaction takes
place over the
prescribed
duration.
After filter
cake removal,
the well begins
to produce.
Return Permeability – N-FLOW™ Breaker
▌ Berea sandstone core
material exposed to 10.8
parts per gallon (ppg)
NaCl/NaBr/BARADRIL-N™
fluid. Filter cake was exposed
to N-FLOW breaker.
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Customer Benefits
▌ Safer than conventional acid breakers
- Excludes harsh chemicals
- Safer for workers and environment
▌ Cost-efficient
- Mixed at the surface rig pit and pumped down hole, leading to
simplified operations
▌ Effective filter cake removal
-Fully controlled, in-situ reaction
▌ Enhance production and injection quickly and efficiently by evenly
removing the filter cake
Helps increase production
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BEFORE N-FLOWTM
AFTER N-FLOWTM
Create maximum production and injection potential by
effectively removing filter cakes with N-FLOWTM breakers.
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Case Study – N-FLOW™ 325 Filter Cake Breaker System
Leads to Increased Production Rate
Location: Kazakhstan, Mangistau Region
CHALLENGE:
 Reducing formation damage in newly drilled 6” production intervals and in older wells during workover
operations
 Increasing production rates
 Removing filter cake
SOLUTION:
 BARADRIL-N® non-damaging drill-in fluid was used, providing a thin filter cake, and helping to prevent damage
to the reservoir
 After extensive testing, the N-FLOW™ 325 system was customized for the operator’s well conditions and
proposed as the filter cake breaking system
 Laboratory test results were reviewed by Baroid Global Technical Advisors and the program was implemented
on 5 trial wells
RESULT:
 After treatment of the wells with the N-FLOW 325 system, the operator’s production department measured an
increase in the productivity index
 Averaged over the 5 wells, the increased production rate amounts to 86.2% improvement in produced oil
volume
CASE STUDY
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Case Study – Engineered Baroid Fluid Systems Help
Operator Exceed Predicted Production Rate in Tight
Sandstone Reservoir
Location: Central Saudi Arabia
CHALLENGE:
 Minimize formation damage, and ultimately increase reservoir producibility while drilling a 1,660 ft 6 1/8-in
reservoir section horizontally across sandstone formation
 Logging-while-drilling data also showed a major shale body on top of the sandstone reservoir section to be
drilled
SOLUTION:
 The interval was drilled with an 8.7 lb/gal (65 pcf) INVERMUL® oil-based mud
 The open hole section was then enlarged to 7-in and displaced to a customized 8.7 lb/gal (65 pcf) solids-free oilbased drill-in fluid (DIF)
 A 68-bbl N-FLOW™ treatment was placed inside and outside the screen using the rig pump at a rate of 250
gpm. The drillstring was then pulled to the top of the screen. After 1.5 hours, losses averaging 60 bph were
observed. This indicated that the N-FLOW breaker delayed reaction had performed as planned.
RESULT:
 After the well was brought on production, the operator reported oil flowing immediately upon submersible pump
activation at a steady productive rate, significantly exceeding offset producers performance
CASE STUDY
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Case Study – Non-Damaging Water-Based Fluid and N-FLOW ™ 408
Breaker System Lead to Maximum Production Rates
Location: United Kingdom
CHALLENGE:
 Minimize formation damage
 Optimize production through removal of filter cake without inducing losses
SOLUTION:
 BARADRIL-N® water-based drill-in fluid system was bridged with a blend of acid soluble calcium carbonate
material specifically tailored to the porosity range of the reservoir
 N-FLOW™ 408 breaker was designed to remove the bridging material and filter cake
 Both fluids were tested against the reservoir core to ensure compatibility and minimal formation damage
RESULT:
 The reservoir section was drilled successfully, ensuring minimal seepage losses and damage to the formation
 The N-FLOW 408 breaker successfully removed the filter cake from the wellbore, allowing the operator to
successfully test and suspend the well
 After the N-FLOW 408 breaker was spotted and inhibited for 24 hours, the maximum constrained flow rate of 52
million scf per day was reached and was well within the anticipated range.
CASE STUDY
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Related Documents
Data Sheets
Technical Papers
Customer Presentation
Quicksheet
Case Histories
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Baroid Reservoir Fluid Solutions
 Reservoir Drilling Fluids
 Breaker Systems
 Completion Fluids
 Wellbore Clean-Up and
Displacement Packages
 Breaker Systems for
Click on image above to launch
ecosystem,then click on Launch
Interactive ►
Polymer and Solids Removal
 Lost Circulation in the
Reservoir
www.halliburton.com/baroid
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Who to Contact
Alan Marr
Product Manager, Completion Fluids
[email protected]
Phone: +44 1224 776785
http://www.halliburton.com/en-US/ps/baroid/fluid-services/fluidadditives/corrosion-control.page
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