Customer Challenges
- The customer required representative fluid property data to develop reservoir models for their development
- After initial analysis of the separator samples, it was identified that the reservoir contained a gas cap and that during the production test, separator flow rates indicated production from both gas and oil bearing zones
- The Mathematical recombinations of the separator samples highlighted that the separator flow rates would produce a highly oversaturated recombined fluid, consistent with the observed two-phase flow. A conventional approach to recombining the separator samples would not have provided meaningful data for either gas or oil zones
- The customer needed to understand the properties of the individual fluids for accurate production models
Expro Excellence
- Expro worked with the customer to develop a laboratory recombination and testing program to recreate well conditions and provide discrete fluids representative of both the gas cap and the oil leg
- Expro conducted physical recombination using the quoted flow rates to produce a pseudo reservoir sample
- The recombined sample was stabilised at reservoir conditions to restore the original reservoir equilibrium and composition of the gas cap and oil leg fluids
- The individual phases were then separated for further PVT and compositional analysis
Value to Client
- Expro’s work enabled physical testing to be conducted on representative fluids obtained from commingled samples
- This provided the customer with vital fluid property data for studies and forecasts, and allowed them to tune their fluid model to high quality PVT test results
- The data enabled the customer to validate their field’s fluid compositions and properties through direct measurements, reducing uncertainty and improving confidence in the well development program
Contact
For further information, please contact Fluids@expro.com.
