Tridiagonal Solutions > Services > Experimental Testing and Validation

Introducing One of the Worlds Largest Multiphase Flow and Process Development Laboratory

The Experimental Fluids Division at Tridiagonal caters to the pilot and field scale testing needs of the Oil & Gas and the Chemical Process Industry segments.

Covering over 250,000 square feet, we operate one of the world’s largest multiphase flow laboratory servicing the Oil & Gas industry. There are nine field scale flow loops to conduct R&D and testing in areas such as solids transport, foam transport, hydrate slurry transport, wax deposition, erosion, erosion-corrosion and viscous multiphase flows. The 16-inch sand transport and multiphase flow loop and the 4-inch wax deposition flow loops are one of a kind flow loops available in the world.

Chemical Process Industry projects are focused on enabling Process & Product Innovations in Chemical, Consumer Product, Food and Pharma Industry. Experiments focus on foaming and aeration during bottle filling, drying & roasting, batch to continuous transformations, mixing and vortexing in stirred tanks, solids dissolution, coating etc.

The key expertise of the team is design, construction and operation of lab and pilot scale plants based on sound multiphase flow and chemical engineering principles.

What we offer:

  1. Field scale infrastructure with significant gas and liquid processing capabilities including 60 tons of chilling and 1 MW of Power Supply
  2. Advanced instrumentation methods including high speed photography, PIV, Wire Mesh Sensor, Ultrasonic Velocity Profiler, CANTY camera
  3. Very quick response in contractual process. Business friendly.
  4. Team is a balanced blend of individuals with Ph.D., Masters and Bachelor’s degree engineers along with technicians
  5. Easy access to fabrication shops, process design firms, EPC, National Labs etc.
  6. Low labor costs across all stages of a process from construction to experimentation
  7. Can provide 3 shifts of Labor to conduct long duration experiments

Oil & Gas Multiphase Flow Test Facility

Erosion loop

Tridiagonal operates three erosion loops to conduct erosion tests in gas-solid dry gas flows, gas-liquid-solid wet gas flows, liquid-solid slurry flows and liquid dominant multiphase flows.  The loops can achieve up to 80 m/s of gas superficial velocity and 10 m/s of liquid superficial velocity in a 4-inch test section. Studies are done with in a once through sand injection mode. So, sand is not recirculated. An in house designed sand injection system injects sand particles ranging from 10 to 450 microns. For slurry flows, a slurry tank is available to prepare slurry. Piping sections mimicking subsea and the top side lay outs can be set up and analyzed for erosion.

Pipe sizes2, 3 4 and 6 inches
Superficial gas velocity5 to 80 m/s
Superficial liquid velocity0.01 to 10 m/s
Sand Flow Rates5 to 50 kg/h
Particle size10 to 450 microns
Pressuresup to 8 bars
Test sectionscarbon steel, stainless, Inconel and other exotic materials
Erosion measurementUT, ER probe, Coupons

Sand Screen Erosion Testing

We provide screen erosion testing services in dry gas, wet gas and liquid flows. Both Quartz and Silicon Carbide can be used as erodents. Typical particle size ranges from 10 to 50 micron. Sand fines are injected in a once through mode so there is no reuse of sand particles. The screen fixtures are typically removed, inspected and weighed every 2 hours to help build a time history of the erosion process. The test is typically conducted over a 40-hour period during which the increase in weight loss, reduction in pressure drop and change in screen integrity over time is captured. Microscopic images reveal the evolution of the erosion pattern on the screens.

Coupon sizes2 or 4 inch
Superficial gas velocity5 to 80 m/s
Superficial liquid velocity0.01 to 10 m/s
Sand Flow Rates5 to 20 kg/h
Particle size10 to 50 microns
Pressuresup to 8 bars

Multiphase Flow and Sand Transport Facility

The largest diameter multiphase flow loop available in any test facility worldwide, this 16-inch diameter, 170 feet long flow loop is used to characterize multiphase flows in low liquid loading systems, measure gas void fractions in pseudo-slugs and determine critical transport velocity for sand transport. Sand beds can be formed insitu and the bed clean up efficiency can be studied. The flow loop is inclinable up to 5 degrees. Test fluids include air, water, model oil along with sand. Extensive studies to understand momentum transfer from gas to liquid phase have been conducted. Liquid film velocity profiles have been measured using ultrasonic velocity profilers and Particle Imaging Velocimetry (PIV) techniques to correlate film velocities to solid transport.

Case Studies