Inter-well oil saturation measurement from tracers
Restrack is proud to introduce new tracers suitable for measuring inter-well oil saturation at reservoir conditions. We believe that with the new tracers, the partitioning inter-well tracer test (PITT) could become the standard method to identify EOR targets and to evaluate the performance of EOR operations.
The partitioning inter-well tracer test (PITT) is a non-intrusive low-cost test that can provide measurement of oil saturation in the region between injectors and producers in an oilfield.The test is run during normal operation of both injector and producer and thus neither cause loss of production nor halt of injection.
Lack of stable partitioning tracers has previously limited the application of PITTs in petroleum reservoirs. A recent field test in the Total operated Lagrave oil field proved the stability and reliability of six new partitioning tracers at reservoir conditions.
In PITTs remaining oil saturation is given from the difference in retention times for the partitioning and water tracers, in addition to the oil/water partition coefficient. The partitioning coefficient is measured at Restrack’s labs, based on oil & water samples from the field.
In the Lagrave case the six new tracers yielded a saturation of 24 +/- 1 %, based on retention times. This result was later verified and corresponds very well to saturation measurements on core samples.
For more information regarding how Restrack can measure oil saturation in petroleum reservoir inter-well regions, please download the whitepaper below.
Contact us to know how you can reduce water breakthrough in your wells using Restrack tracer technology.
More case studies
Restrack offers an integrated single well chemical tracer service to measure oil saturation in near-well regions. The method was used successfully to estimate oil saturation in the Heidrun field on the Norwegian Continental Shelf (NCS).» Read more
Water tracking information from Restrack’s inter-well tracer technology in a North Sea reservoir revealed the source of a massive water breakthrough at the producer.» Read more
A significant tracer program (with more than 50 individual injections) has been executed at Snorre. These tracer data were used in an integrated process to map reservoir flow that confirmed interpretations of water fronts indicated by 4D seismic dimming.» Read more