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The PES Turbulator is the Turbulator that brought about significant improvement in cement bonding in primary cementing. Reduced drilling and completion costs have been the result. Better wells mean better profit$.

How it Works is Fundamental
Casing must be kept off the well bore to get cement all around. Solid vanes provide a positive standoff tool.
  • Channeling must be eliminated. With Turbulators on the casing, the angled Turbulator vanes break up jelled fluid pockets where the pipe is going into the hold. It is then easier to vacate the well bore fluids by spacers and cement. If the mud is not removed, the cement just cannot get in.
    • The angled Turbulator vanes create a radial swirling fluid motion on the fluid being pumped. A radial motion is a washing motion that can eliminate channeling, pick up well solids from the low side, get the mud out, and put in the cement. A good bond results.
Turbulators are used:
On any casing string to aid in "getting the casing to the bottom". The vanes keep the casing off the hole wall, reducing casing area exposed to the wall of the hold which can prevent the differential sticking of casing, long strings, or liners.

Wherever a good cement bond is essential, such as:
  • Casing shoes on any size casing
  • Across any potential producing area
  • Isolation of water bearing sands
  • Liner overlap areas
  • Casing inside defective casing, etc.
  • Effective in straight, highly deviated, and horizontal holes
  • Especially for liner rotation, where Turbulators serve as bearings for the casing.

Determining Size and Spacing
To be most effective, Turbulators must have the proper vane diameter in relation to the I.D. of the hole. The standard relationship is for the Turbulator vane O.D. to be 1/4 inch less that the bit size used to drill the hole. The reason for this is to have the maximum amount of fluid going between the vanes. This increases momentum to the spiral motion of the fluid and results in a longer swirl length. The vanes must be correct for the hole size.A 20-foot spacing between Turbulators is recommended over areas where a good cement bond is necessary. The proper spacing of Turbulators is essential for the prevention of differential sticking by keeping casing off the hole wall, and for use as casing bearings while rotating casing. Turbulators are secured to the casing by a plurality of set screws in a diagonal configuration between the vanes or through the vanes in close tolerance installations. This is a patented feature for greater holding power. A combination of thread-locking and set screws has a three-fold increase in holding power over set screws alone. This is an excellent method to use on flush joint casing due to the absence of casing collars. The procedure is also applicable in highly deviated or crooked holes.

  • The new "Interlocking" Turbulator with heavy duty locking pins. Locking segments flush with I.D. of tool.
  • The new ""Interlocking" with the patented diagonal set screw pattern will withstand over #30,000 thousand pounds of starting force.
  • Standard length is 4 1/2" long. ( Others available upon request )
  • This newly invented "Interlocking" Turbulator has been tested and used in numerous wells worldwide with outstanding success.


The "Straight Vane Turbulators" are used where casing centralization is the main consideration -- such as to centralize large casing strings to facilitate the cutting of casing during well abandonment. The "Straight Vane Turbulators" Centralizer is made in several lengths as desired by the customer.



Production Enhancement Systems  was the first to offer a Turbulator with the interrupted or free bore center section, " The Scrape-0-lator." patented technology. Now, PES Tool offers the same tool with a integral central collar instead of the casing scraper collar for those who want to rotate and not reciprocate.
The central collar is offered in the patented diagonal setscrew pattern for maximum holding strength.

Features are:
  • Insured positive standoff.
  • Maximum flow
  • Maximum well bore stabilization
  • Rotating advantage
  • Maximum holding strength
  • Decreased drag

Better than a Straight blade ------ Better than an angled blade
  • Slide in the hole on a straight blade ---- The OD of the straight blade on the SST is larger than the OD of the spiral blade. Nothing goes into the hole as easy as a straight blade.
  • Remove debris with an angled blade --- The 45 degree angle of the uniquely designed spiral blade on the SST will produce maximum fluid swirl; thus maximum removal of debris from around the casing in horizontal, deviated, or straight holes.
  • Maximum support for the casing --- Blades overlap to provide 360 degrees of support.
  • Maximum strength and hardness --- No other turbulator is made of material stronger or tougher than Milam Mild Steel Turbulators. Why run anything that may break in the hole??? Aluminum alloy and zinc alloy turbulators have broken when accidentally dropped from a crane. They have also broken up in the hole while being run, and in some cases have fouled liner hanger slips causing the hanger to malfunction. A Milam Mild Steel Turbulator has never broken downhole or when the casing is accidentally dropped.
  • Maximum wear and abrasion resistance --- What could be more resistant than Mild Steel?? Aluminum alloy and zinc alloy are not even close.
  • 40 percent less drag than bow spring centralizers --- Tests done by several companies including Weatherford, Downhole Products, Milam Tool Company, and STATOIL have proven that rigid stand-off tools, such as turbulators, made of mild steel, aluminum alloy, or zinc alloy have approximately 40 percent less drag than bow spring centralizers.
  • Easier to pass through tight spots --- Maximum OD of a Turbulator is less than a fully collapsed bow spring centralizer --- Recommended OD for a Turbulator is 1/4" less than the hole ID. This makes it smaller than a fully collapsed bow spring --- Example: A bow spring centralizer for 7" casing inside 8-1/2" hole has a fully collapsed OD of 8-5/16"; Turbulator is 8-1/4" OD. A bow spring centralizer is approximately 21" long, whereas an SST Turbulator is only 10" long; and a standard  Turbulator only 4-1/2" long.
  • Low Friction Factor--- For oilfield applications, that is, rough OD of the rigid centralizer tool against the rough ID of casing or wellbore, mild steel is no different than aluminum alloy or zinc alloy. This has been proven with actual pull tests.
  • Excellent bearing characteristics --- It is well known that polished and well lubricated dissimilar metals make excellent bearings. For oilfield applications where the surfaces are not polished or well lubricated, steel on steel will have the best bearing characteristics; whereas, aluminum alloy and zinc alloy will gall and become sticky at high speed and elevated temperature.
  • Eliminate cement/mud contamination --- The strong swirling force created by the specially designed 45 degree angle blade on the Turbulator removes the mud and distributes the cement slurry 360 degrees around the pipe - If you can't get the mud out you can't get the cement in.
  • Available in any size --- To manufacture a Turbulator, PES utilizes a mild steel blade welded to a mild steel sleeve. It is a known fact that when two pieces of steel are welded together the weld is stronger than the two pieces of steel.
Continued research and development by had brought forth a solid pipe centralizer that rotates freely on the casing called the "Spir-0-lator ". This feature provides excellent circumference stand-off from the wellbore. The " Spir-0-lator " is designed to facilitate setting casing liners and screens. As with the Turbulator, the "Spir-o-lator" has solid helical vanes evenly spaced on the circumference of the tool. The angel varies from seventeen to twenty-five degrees ( 17 to 25 ), depending on the casing size. The vanes are tapered at the top and bottom which decreases drag during running. Running free allows the tool to rotate and move as the tool contacts the wellbore. The "Spir-0-lator " is retained on the casing string by a Milam Tool Co. " Stop Ring "at the lower position requirement.

Spir-0-lator Advantages:
  • Centralizers casing for even cement sheath.
  • Aids in preventing differential sticking.
  • Reduces frictional drag.
  • Provide passage for fluids during displacement.
  • Fluid agitation / solid spiral vanes break up gel pockets thereby reducing viscosity and improving displacement of drilling fluids during cementing.
  • Centralizes production screens in the wellbore.

Additionally the "Spir-0-lator" can be coated with a flexible ceramic coating that reduces frictional forces exerted onto the tool in the wellbore.

Features of the coating are:
  • High abrasion resistance.
  • Flexible ( Thirty five percent elongation factor ).
  • High corrosion resistance.
  • High lubriicity.
  • High temperature rating.
  • Thin film ( six mil ).

Stop Ring
Where casing is to be rotated, the Turbulators are not set-screwed to the casing. Up and down movement of the Turbulators is controlled by the use of stop rings. Turbulators then act as bearings and greatly reduce the torque necessary to rotate the casing by reducing the area of casing against the wall.


Stop Ring Interlocking
The new " Interlocking " Stop Ring with heavy duty locking pins. Locking segments flush with I.D. of tool. The new " Interlocking " Stop Ring will withstand over 30,000 thousand pounds of starting force Standard length is 3" long


Stop Ring Heavy Duty
The HD (Heavy Duty) Stop Ring is made with the same patented multiple set screw configuration as the Turbulator and provides the same holding power. This is essential for use on flush joint casing to retain up and down movement of rotating Turbulators




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