Reômetro HPHT
SKU: Reômetro HPHT
info@tennessine.com.br
info@tennessine.com.br
SKU: Reômetro HPHT
The unit incorporates a direct drive between the bob shaft and the torque transducer, which eliminates momentum of inertia errors usually associated with magnetically coupled torque transducers. Thus, the torque transducer can respond quickly and consistently to changing bob shaft torque, resulting in lower maintenance costs while allowing continuous testing of corrosive samples.
The only true rheology measurement under pressure
Other rheometers often utilize a magnetic coupling across a pressure vessel to rotate a magnet on a bob shaft, using metal or air bearings, in order to measure viscoelasticity; however, when the tested fluid possesses different G'/G" values compared to the calibration fluid, the G'/G" measurement will be invalid. A calibration fluid with known G'/G" values must be tested properly to provide a baseline for viscoelastic measurement. The HPHT Rheometer, also available with an optional viscoelastic module that performs viscoelasticity tests to derive G', G”, G* and phase angle. This vastly increases the researcher's ability to predict the behavior of fluids, such as their capacity for suspending and carrying solids (weight material sag, drill cuttings transport, proppant transfer, etc.)
Viscoelastic option available for G', G" and phase angle testing
The HPHT Rheometer does not employ magnetic coupling, instead taking direct measurements inside the pressure vessel, providing true measurement in a pressurized environment. This allows us to offer the dynamic option, which enables the user to perform true G' and G" viscoelasticity tests under pressure, without having to pre-test using fluids with known G'/G" values.
Cutting-edge database software enables customized search and data comparison
The application software includes powerful database tools for searching, categorizing, and comparing test results. The search criteria can include any test result parameter, including additives, descriptions, or other details. Also allows you to overlap as many test charts as you like. Each test chart will display with customized graphics to differentiate it from other tests
Patented hardware design & detailed engineering lead to highly consistent data
The unique hardware and software design of the instrument enable it to produce test results that are extremely repeatable, because process errors and other complications are eliminated by the robust and innovative configuration of hardware and software. By removing contamination and other interference from the test environment, the M5600 test results reflect the properties of the test fluid instead of the properties of the testing hardware.
Special hollow bob can test rheology and overcome the Weissenberg Effect
The Rheometer also includes a special hollow bob that allows researchers to test the rheology of non-Newtonian fluids and help overcome the Weissenberg effect. The bob design features off-centered axial direction holes, which creates a circulation path to refill the gap in the measurement zone should the liquid sample in the cup climb out, due to the Weissenberg effect. Because of the differential shearing at the bottom of the cup and the bob, along with the pressure difference if the measurement gap is vacant, tested fluid tends to refill the measurement zone and recirculate along the measurement zone if the Weissenberg effect occurs. Thus, the configuration of the hollow bob enables repeatable and reliable test operation using a broad selection of test fluids, methods, and environments.
Specifications
Dimensions: 8.5" Depth x 12.5" Width x 25.5" Height
Weight: 66 lbs (with bath) or 61 lbs (with carbon block)
Pressure Range:: Atm to 2,000 psi
Sample Size: 32 to 78 ml
Resolution: 0.01% of full scale range or better
Temperature Range: Ambient (20 °F with chilling device) to 500 °F
Speed Range: 0.0001 to 1,100 rpm continuous
Frequency Range: 0.01 to 5 Hz (Optimized at 0.2 to 3 Hz)
Amplitude Range: 0.1% to 500 % (Optimized at 0.2% to 500%)
Shear Rate Range: 0.00004 to 1870 sec-1
Shear Stress Range: 1 to 15,000 dyn/cm2
Viscosity Range: 0.5 to 5,000,000 Centipoise
Torque: 14 μN.m to 100 mN.m
Repeatability: ±0.05% of full scale range or better
Power Voltage: 120V or 240V (with transformer)
Construction: Hastelloy C wetted material
Power Frequency: 50 Hz or 60 Hz
Computer Requirements: PC with MS Windows 9X/2000/XP/Vista/Win7
Features
- Allows the user to test samples with high acid concentrations, including fluids with 30% HCl
- All wetted materials are Hastelloy C276 construction
- Incorporates years of research into its innovative design
- Oil or dry heat option (oil bath shown, above)
- Fully digital with LCD screen
- Fast test cycle: Setup-load-test-clean
- Safety feature of temperature controller will stop heating if it sees temperature is above 520°F.
- Separate thermostat from temperature control loop that will cut off bath heater power supply when its temperature is above 500°F
- Includes 2 temperature controllers, one for control, the other for safety.
- Over pressure relief valve
- Repeatable results with Test flexibility
- Includes Software, which connects the Rheometer with a Windows®-based PC
- Tests are simple to set up and run
- Customizable charts and real-time data are displayed during tests
- Saved tests can be searched by any specified test parameter: test name, fluid ID, additive, researcher name, or more
- SBC software on unit will stop heating if it sees temperature is too high
- PC software will send stop heating command it if sees temperature is too high.
- Also Available: M5600 HPHT Rheometer Carrying Case
- Carrying Case includes an extendable handle and wheels for easy transportation
- Each M5600 unit has multiple thermocouples, dedicated thermostat for over heating shutoff, special relief valves, integrated N2 regulator, all internal tubing rating for 10ksi, and pre-programmed shutoff points within M5600 software.
- The new carbon bath is much cleaner than older oil bath and allows for heating at 2x rate.
1) Why choose it?
- The HPHT Rheometer is completely compliant to API 13 & 39 specified geometry.
- It incorporates a direct measurement torque transducer and a separately controlled strain mechanism, which eliminates moment of inertia errors. These errors are often associated with magnetic coupling across a pressure vessel wall in a typical rheometer under high temperature and high pressure conditions.
- The HPHT Rheometer enables tests to obtain values for G' and G", N' and K', all with the same API geometry.
- Hastelloy C construction on wetted parts and multiple patented technologies enable it to test the most corrosive samples, including acids.
- PC™ software allows both single- and multi-step real-time testing.
2) Why oscillatory testing?
- Standard rotational testing measures fluid viscosity under a constant shear rate (constant speed), which indicates only apparent viscosity, or how thick a fluid is. On the other hand, almost all drilling muds, fracturing fluids and cements have some "gelly" strength that enables them to suspend solid particles. This ability to suspend solids is very important to many oil field operations. The HPHT Rheometer oscillatory testing option provides the capability to measure how "gelly" a sample is, in addition to how thick the sample is, by providing G', G", and other data. 'This vastly increases the researcher's ability to predict the behaviors of these fluids, such as capacity for carrying solids (weight material sag, drill cuttings transport, proppant transfer, etc.). Oscillatory testing mode also completely removes measurement errors due to sample climbing.
- The HPHT Rheometer features patented technology that can directly measure the true viscoelasticity of a sample under high temperature & high pressure conditions without magnetic coupling-induced measurement errors
3) Which bob size should be used in testing?
- The HPHT Rheometer unit comes equipped with an API 39 standard size rotor and bob, designated "R1B5", or rotor 1, bob 5. The B5 bob is very commonly used for fracturing fluid testing. To reduce sample climbing ("Weissenberg effect"), extended bobs, such as the XB5 and XB2 are recommended for testing crosslinked fluids or high molecule structure samples. For drilling fluids testing, we recommend the B1 bob.