The Delta C SAGD Sample Station a fixed volume automated sampling system is designed to allow sampling of a continuous representative fluid stream. The sampling system includes a process bypass for sample cylinder switch out, as well as pressure indication and relief valves. Spare sample cylinder storage is conveniently located within the sample station.
The unit is designed for 1/2″ diameter sample take off, return and drain tubing.
|Wetted Parts:||316/316L SS|
|O-ring Material:||Kalrez 7075|
|Max. Fluid Temperature:||232°C (260°C Optional)|
|Max. Working Pressure:||800 PSIG (1000 PSIG Optional)|
|Cabinet Dimensions:||24″W x 30″H x 12″D|
|Inlet/Outlet/Drain Size:||1/2″ Tubing|
The high pressure, fixed volume, inline sample cylinders are available in 200mL and 500mL sizes. The cylinders are supplied in 316SS complete with locking isolation valves and safety coated handles for high temperature use. A two-part design permits extraction of the entire sample with minimal use of solvents.
The three-stage, rack and pinion plunger delivers the control and force required to extrude the highly viscous bitumen from the sample cylinder into the distillation flask. The key to the extrusion process is that the entire sample is directly transferred from the sample cylinder to the distillation flask intact.
SAGD Industry Challenges
Traditionally, three major challenges prohibit accurate and reliable watercut measurement in SAGD operations.
- High temperature, high pressure manual sampling presents significant health and safety hazards to field personnel.
- Poor performance and reliability of on-line water cut monitors is a constant frustration and cost. Frequent breakdown of these devices results in extensive downtime and ongoing cost for removal, repair, replacement and recalibration.
- Dramatic discrepancies between on-line water cut values and manual sampling continues to erode trust in on-line water cut measurement.
The result is that SAGD producers reluctantly rely on repetitive, labour intensive manual sampling for both regulatory and operational watercut determination. Sample processing backlogs and erratic manual cuts force SAGD operators to run “blind” with respect to emulsion watercuts. In order to solve these problems, two things are required:
- A SAGD watercut monitor that is physically capable of withstanding the high temperature, abrasive process conditions at the well pad over the long term.
- A safe, repeatable means to sample SAGD emulsions for calibration and validation of the on-line watercut monitor.
Delta C Solutions for Water Cut Monitoring and Automated Sampling in SAGD Applications
Delta C Technologies has developed a Water Cut Meter field-proven to withstand the severity of the SAGD environment. This is backed by over four years of continuous, maintenance-free service in well pad bitumen emulsions running at temperatures from 180 to 200°C.
The success of the Delta C Watercut Monitor in SAGD service is due in part to the relative simplicity of its mechanical design. Our sensor plug is a robust coaxial capacitor manufactured from a combination of 316SS and proprietary ceramics which offers longterm reliability in high temperature, abrasive process conditions. The Delta C design is not susceptible to bitumen fouling or component damage, nor is it affected by changes in process salinity.
To complement the Watercut Monitor and address the challenges of SAGD emulsion sampling, Delta C has developed a fixed volume, pressurized SAGD Sample System combined with a unique Sample Extrusion process, which enables repeatable sample analysis using the Dean Stark distillation method. This system enables accurate field calibration and validation of the watercut monitor by providing representative sampling with the added benefit of improved operator safety.
By combining the reliability of the Delta C Watercut Monitor with the repeatability of the SAGD Sample System, measurement accuracy and confidence in online watercuts are now possible. With trusted on-line watercut measurement comes improved safety, lower overall production costs and better operational decisions.