Production fractionation - PVT
This is done using the PhaseSnapShot approach.
14-compound PVT model for comparison of phase envelopes with those in engineering reports, including assessment of production fractionation.
Engineering reports, and shales with maturity just less than at the production site.
Geochemical screening is used to select the key samples.
Closed system MSSV pyrolysis
- Instantaneous composition reproduces GOR.
- Differences between predicted phase envelopes and those from engineering reports are used to assess production fractionation in terms of C7+MW and GOR.
- Differences can be large or small (usually 20-40%).
No Black Boxes -> read Horsfield B., Mahlstadt N., Michael E., MacMahon N., Tobey M. (2019) Production Fractionation and Efficiency Indicators from Phase Snapshots. UrTEC 375, Denver, 22-24 July.
Link to the abstract and purchase options. Request a copy of the article.