10" ID Injection flow line cleared of barium and iron sulfide scale.

TFO May Replace Fracturing in Some Applications
        TFO Removes  Skin Damage




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  • The treatment fluid enters the switch body and is accelerated into the fluidic oscillator.  The fluid stream enters the oscillator and preferentially attaches to the outer wall of one of the fluid  passageways.  
  • The flow continues down the selected passageway towards the outlet  to the wellbore.   As the flow passes a cross channel, a low pressure area is created which causes the main fluid stream to be  interrupted and the flow to switch to, and attach to, the other fluid passageway.   
  • Continuous flow causes the fluid to oscillate from one side to the other which  causes alternating “bursts” of fluid  to be injected into the wellbore.  As each “burst” is ejected, it forms a pressure wave within the wellbore fluid.     
  • Compressive loading occurs when the wave contacts the damage.  ​ As the wave passes through the damage (scale, etc.) and is reflected back, it induces a tensional loading on the skin damage. 

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​​Fluidic oscillation started as a comprehensive method to remove skin damage from new perforations and has evolved into a complete treatment system that can incorporate other tools as well as fracturing techniques. Hydraulic fracturing treatments,"Frac" jobs, have become the industry standard in many areas for correcting fluid entry problems and prior to the invention of the true fluidic oscillator, frac treatments were often seen as the most effective and "necessary" solution to the problem at hand even though they come with a high price tag. 


​Working with a formation with very low permeability such as "tight"      (< 0.1 md) sands, frac treatments are usually necessary to establish economical production, however, there are many formations around the world that have relatively high permeability. Until the advent of the fluidic oscillator technology, it appeared prudent to order a frac job which in reality breaks through and bypasses the damage rather than re-establishing the flow path by removing the restrictions to production. 


​​When dealing with moderate to high permeability or naturally fractured formations, using the true fluidic oscillator has proven to be extremely successful in establishing commercially economical production rates, in some cases surpassing frac rates, by re-connecting the perforations with the reservoir, opening clogged formation pore spaces and removing the near wellbore formation damage created during the drilling, completion, and production phases.  


The TFO tool system is designed to remove this damage and enhance the native permeability found in the formation. Fluidic oscillation treatments have been performed that have resulted in higher initial production rates as compared to frac jobs. After one year, these same treatments are still producing oil at a higher rate compared to wells that were treated by hydraulic fracturing. The key difference is that the fluidic oscillation treatment removes the material that restricts production instead of bypassing it.   More on treatment comparisons.​

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The True Fluidic Oscillator is highly effective for clean out of barium and iron sulfide scale in injection flow lines and in oil and gas pipelines.







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​The continuous cycling of the pressure waves causes the skin damage to reach its fatigue failure point and break up.​ More on TFO technology.