monang77
Mechanical
- May 23, 2023
- 2
I am currently preparing for a leak sealing job on SCSSSV control line and wellhead cavity. Part of the assessment in evaluating the severity of leak in wellhead cavity and control line is to find the leak rate. I am struggling to understand how this leak rate should be measured. Some reference showed that it could be determined in gpm of fluid loss (mostly using hydraulic oil) injected into the control line or cavity, others described it in psi/min loss. Ideally the pressure in control line remains constant (that is at pressure required to maintain the SCSSSV flapper open) and in case of wellhead cavity the pressure ideally remains 0 psi (indicating integrity of the hanger seal), both indicates that both cases are static. So, my thesis so far is it is more appropriate to measure leak rate in terms of psi/min drop instead of gpm loss since pressure drop is measurable and flow rate loss is not. Any thought on my case are very much welcome. Cheers.
