Downhole Fluidics Oscillator

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Downhole Fluidics Oscillator
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Oscillator Service

• Cost-Effective Process for Treating Near-Wellbore
  and Perforation Damage and Helping Stimulate
  Production

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Oscillator Service Can Address These Issues

• Loss of production or injectivity due to near
  wellbore conductivity problems caused by
• Scales
• Paraffin
• Migrating fines
• Asphaltene deposits
• Lost or de-hydrated drilling mud
• Well not producing at maximum potential
• Ineffective stimulation treatments (acidizing,
  fracturing. etc.) due to near wellbore blockage
  or restrictions

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Texas Wolfcamp Formation Well Production Jumps
From 6 BOPD to 250 BOPD

• Scale and paraffin problems had lowered
  production to 6 BOPD. Results Six months after
  the Oscillator treatment, the operator reported
  that the oil production stabilized at 250 BOPD.

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Definitions Related to Oscillator Service

• Fluidic of, relating to, or being a device (as
  an amplifier or control) that depends for
  operation on the pressures and flows of a fluid
  in precisely shaped channels
• Acoustic Streaming the production of
  unidirectional flow currents in a fluid because
  of the presence of sound waves
• Synergism an interaction of elements such that
  their combined effect is greater than the sum of
  their individual effects.

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How does Oscillator technology work?

• Patented tool is run on coiled tubing
• Unique design of the tool causes the tool to
  oscillate as fluid is pumped through the tool.
• Fluid can be acid, water, seawater, diesel,
  nitrified fluids, etc.

Combines coiled tubing efficiency with fluidic
oscillator technology.
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How does Oscillator technology work?

• Based on the Coanda effect, fluid flow causes the
  Oscillator tool to oscillate which causes
  alternating bursts of fluid to be ejected into
  the wellbore. These bursts of fluid create
  pulsating pressure waves within the wellbore and
  formation fluids that can break up any type of
  near wellbore damage.

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Cleaning Mechanisms

• Cyclic Loading
• Stress loading caused by the oscillating pressure
  waves as the tools are reciprocated through the
  interval
• Acoustic Streaming
• "Pinpoint" placement of fluid
• Chemical reaction
• Enhances the reaction through increased fluid
  mixing and by increasing the surface area for
  contact

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Fluid Types

• Water, acid, diesel, CO2, N2, foamed fluids or
  any other non-abrasive fluid
• The pumped fluid is an integral part of the
  treatment
• The type of fluid is determined by the nature of
  the problem
• Ideal fluid properties to consider
• Surface tension reduction
• Friction reduction
• Surfactant activity
• Penetration capability
• Solids suspending
• Wettability protection
• Acid retardation
• Increased solubility

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Oscillator Service is Highly Effective in These
Applications

• Removal of deposits from the near wellbore area,
  perforations, and screens.
• Primary stimulation of high permeability
  formations.
• Preparation prior to stimulation treatments.
• Preparation for gravel packing or frac packing.
• Clean out fill from open hole or casing.
• Alteration of injection profiles.
• Correct placement of treating chemicals.

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Case HistoryColorado Production Doubled from
Desert Creek Formation Well
Scale buildup had caused production from this
well to decline to 99 BOPD and 437 MCFD. Results
Damage was removed and production restored to the
same levels as when the well was first completed.
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Oscillator service has already been used
successfully to treat over 3,000 wells globally.

• Completed over 500 wells for one major
  independent operator
• Effective results in both vertical and horizontal
  wells including oil, gas, geothermal, water and
  CO2 injection, disposal and monitoring wells
• Wells treated from 90 ft to 27,000 ft deep and
  temperatures up to 750F

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Typical CT Configuration

• 1.25-in. OD CT Configuration
• Uses a double crimp connector.
• Includes a ball type check valve.
• 1.25-in. OD fluidic oscillator.
• Overall tool length is 13.5 in.
• Tools are available for 1.0-in. OD coiled tubing
  and larger.

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Oscillator Service Summary

• Increased production with reduced skin effects
• Lower injection pressures, higher rates on
  injection wells
• Enhances the use of chemicals through optimal
  placement and increasing contact area
• Fast, economical thru-tubing deployment with
  coiled tubing
• Not limited by stand-off or hydrostatic
  limitations, effective in large diameter casing
  applications
• Reliable no elastomers or moving parts,
  compatible with wide range of treating fluids and
  temperatures

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Conclusion

• The synergism of cyclic loading, acoustic
  streaming, and chemical reaction results in
  the restoration and enhancement of the natural
  near wellbore permeability
• Downhole Fluidics Oscillator technology is well
  proven.
• It is effective in all phases of well completions
  and workovers.
• This enables the well operator to
• maximize profits, not just cut costs!

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Oscillator Service

• Cost-effective process for treating near-wellbore
  and perforation damage and helping stimulate
  production.