The problem number one of artificially lifted wells produced by ESP, BP, PCP is the impossibility to run a Production Logging Service like MPLT or PLT while the well producing by a pump unless Y-tool or Dual String completion installed. This lack of data about well-reservoir performance, especially when an oil well producing several zones commingle, has a negative impact on well-reservoir management (WRM), particularly on well production optimization and well production restoration opportunity.
VERTICAL WELLS WRPE
Key findings from Spinner-based profile (left part of slide):
- Spinner based flow profiling was not able to detect leak from squeezed part of upper perforation interval inspite advanced sensitivity of North Side FBS.
- Spinner was not able to catch flow from leaking cement plug because it was beyond its threshold. This is well known limitation of spinners.
Key findings from Temperature Modelling and SNL based profile (right part of slide):
- Leak from second half of upper perforation interval as much as 9% of total flow.
- Leak from cement plug as much as 1% of total flow.
Summary: HPT and SNL based production profile helped to evaluate reservoir performance as well as fine-tune production profile across peroration intervals and evaluate integrity of previous cement job. Spinner based profile helped to understand “big picture” and verify at some extend Spinnerless production profiling technology.
Spinnerless production profiling