Dynamic Stability Loop DySL
Testing the product stability of oilfield chemicals
The Dynamic Stability Loop DySL is a state-of-the-art laboratory device that tests the product stability of chemicals exposed to extreme pressure and temperature conditions. It has been specifically designed for stress testing chemicals in oil fields as well as chemicals in supply lines.
With the ability to simulate pressures of up to 150 bar or up to 600 bar and temperatures between -10 °C and +150 °C, the Dynamic Stability Loop reproduces the demanding conditions under which oilfield chemicals must prove their long-term stability. This device is suitable for all liquid chemicals that have to withstand such challenging conditions.
All important features of DySL
- 3-in-1 device: stress test, viscosity and filter blocking test
- Parallel tests in up to 4 loops
- Automated long-term tests up to 30 days
- For Pressures up to 150 bar or 600 bar (2,200 or 8,700 psi)
- Maximized thermal load through hot and cold baths
- User-friendly in use, cleaning and maintenance
- Open and closed loop set-up
Application Areas of Dynamic Stability Loop DySL
The DySL enables automated long-term testing and parallel analysis in up to four loops. It is characterized as a 3-in-1 solution, as the product stability of the chemicals is assessed on the basis of three decisive parameters: Viscosity change, filter blocking and deposits. In this way, the Dynamic Stability Loop ensures a comprehensive assessment of chemical stability in critical applications.
Long-term stability of oilfield chemicals
Stress test for oilfield chemicals
Viscosity measurement under pressure
Filter blocking tendency
Emulsion testing
Quality control
Measuring principle: Chemical stress test
The Dynamic Stability Loop is used in the laboratory to test the product stability of chemicals for their specific area of application through artificial ageing in a stress test. For this purpose, the flow rate, pressure and temperature are kept constant in order to simulate extreme conditions, e.g. in supply lines.
The stress test is carried out as follows: The sample is pumped continuously in a circulation system (loop) at high pressures over a longer period of time, usually 1 to 2 weeks. The sample is subjected to targeted thermal stress by first passing it through a heating bath and then through a cooling bath.
The viscosity changes and deposits are precisely recorded in each measuring section. In addition, an integrated filter enables the detection of particles in the sample. These comprehensive stress tests allow the long-term stability of the chemical to be evaluated in detail.
IN USE WORLDWIDE
Used by Leading Labs
Viscosity and filter blocking
The viscosity and filter block tendency are continuously measured in both the heating bath and the cooling bath by monitoring the differential pressure. Long-term changes can also be observed. User-defined settings of absolute pressure, back pressure and bath temperatures allow a wide range of conditions to be simulated, from relatively mild onshore conditions to drastic deep sea requirements.
Parallel test execution
In view of increasing demands on test conditions, the Dynamic Stability Loop was specially designed for carrying out multi-loop experiments. Up to four parallel loops enable the simultaneous testing of different chemicals or different product types. Each individual loop can be used independently. Cleaning and filling is possible while other loops are in operation. The measuring capillaries and filters can be replaced by the user. Long-term tests of up to 30 days or longer can be carried out.
Open and closed loop - both are possible
Only a small sample volume of less than 50 ml is required to fill the test loop. The sample can then be pumped either in a closed loop or with an open outlet. When the loop is open, the liquid is pumped back into the reservoir, so that the entire volume of liquid in the reservoir is circulated. This leads to a significant increase in the possible sample volume, up to 500 ml can be used. In the closed loop, only the current filling quantity is required.
Everything under control with the software
The WinDySL software enables simple control of the Dynamic Stability Loop and records all measured values. Various recording options can be selected to analyze different aspects of the experiments. A tool is also integrated into the software with which the pressure sensors can be quickly calibrated to compensate for long-term shifts in the measured values.
Online Demo with Dynamic Stability Loop DySL
During the product demonstration, you will gain many insights into how it works. You can follow the measuring process live and then discuss your questions with our experts.
The most important facts at a glance
| No. of test loops | 1 - 4 |
| Pressure Range | Bis 150 bar (2,175 psi) or up to 600 bar (8,700 psi) |
| Temperature range |
Refrigerated bath: -10 .. +150 °C Heated bath: +30 .. +150 °C |
| Sample Volume | 50 .. 500 ml |
Dynamic Stability Loop data sheet
In the product data sheet you will find the exact specification as well as many data and options to help you decide on the Dynamic Stability Loop.
WHY PSL?
We set new laboratory standards with our instruments
We have been developing, manufacturing and selling innovative laboratory instruments specifically for Flow Assurance for 25 years, setting new standards in the laboratory for professionals. We have been awarded innovation prizes for this. Our export quota of 90 % earned us the Export Oscar of Northern Germany.
PSL stands for reliability, quality and innovation. We are proud that the Big Five in the industry are among our satisfied customers.
WHAT WILL BE YOUR BENEFIT?
Reliable, high-quality instruments for your success
SAVE TIME IN EVERYDAY LAB WORK
with automated test cycles, cleaning procedures and easy-to-clean parts.
EASY TO USE
with a user-friendly, high-quality design for simple, correct and safe handling.
LONG LIFETIME MADE IN GERMANY
thanks to the sophisticated and robust design as well as the high-quality materials and manufacturing.
TRUSTED SERVICE - WORLDWIDE
with our online support, maintenance contracts and on-site service. We guarantee 20 years of repair service.
MEASURE LIKE INDUSTRY LEADERS
With innovative and advanced instruments, you can measure future-proof like the leading laboratories.
PLEASURE TO MEASURE
Our instruments make work a pleasure. They were developed together with the users.
I would like to know more about the instrument
You may also be interested in these products
Wax Flow Loop (WL)
The fully automated Wax Flow Loop is a compact laboratory system for investigating the precipitation and deposition of waxes, paraffins and asphaltenes in pipelines.
Pour Point Tester (PPT)
The portable pour point tester measures the pour point (no flow point) of oils and oil products in accordance with ASTM D 5985, making it 30 times more accurate than devices that comply with ATSM D97.
Flocculation Tester FT5
The automatic flocculation titrimeter measures precipitation and crystallization of asphaltenes in very dark, undiluted crude oils and oil products up to 700 bar and 200 °C.