Geochemical evidence for the internal migration of gas condensate in a major unconventional tight petroleum system.

ABSTRACT: Unconventional petroleum systems go through multiple episodes of internal hydrocarbon migration in response to evolving temperature and pressure conditions during burial and uplift. Migrated fluid signatures can be recognized using stable carbon isotope and PVT compositional data from produced samples representative of in-situ petroleum fluids. Such samples, however, are seldom collected due to operational complexity and high cost. Here, we use carbon isotope and PVT data from co-produced hydrocarbon gas and liquid to provide evidence for widespread migration of gas-condensate in the Montney unconventional petroleum system of western Canada. Extended C₁-C₃₃ isotopic profiles exhibit convex upward signatures with C₄-C₅ maxima at low molecular weig

SUBMITTER: Wood JM 

PROVIDER: S-EPMC9106717 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature