PETROLEUM POTENTIAL OF MAE TEEP ORGANIC SEDIMENTS, NORTHERN THAILAND

Authors

  • Piyatida Sangtong
  • Akkhapun Wannakomol
  • Bantita Terakulsatit

Keywords:

Kerogen, Vitrinite reflectance, Pyrolysis, Source rock

Abstract

The selected 7 organic sediment samples (3 oil shale samples from Upper Oil Shale, Lower Oil
Shale and Oil Shale in Coal A sub-unit, 3 coal samples from Coal A, Coal B and Coal C sub-unit and 1
leonardite sample from Leonardite sub-unit) collected at the northern wall of Mae Teep coal mine were conducted
the Hydrocarbon Analyzer with Kinetics (HAWK) pyrolysis in order to assess their petroleum source rock
potential. The calculated HI, OI, PI, S2+S3 and Ro were then used to classify the kerogen type and to evaluate
the thermal maturity stage of these 7 studied organic sediment samples. Results of the study indicate that all of
the organic sediment sub-units of Mae Teep organic sediments have good to excellent hydrocarbon generation
potential. HI vs Tmax and HI vs calculated Ro cross-plots results indicate that organic sediments of Coal A,
Coal B, Coal C, Oil Shale in Coal A and Upper Oil Shale sub-unit are in the thermal immature stage, while the
organic sediments of Lower Oil Shale and Leonardite sub-unit are in the early thermal mature stage. Mae Teep
organic sediments are considered to be the high potential hydrocarbon source rock since they have high kerogen
yield (S2) (21.49 - 69.8 mg HC/g rock) and their total hydrocarbon generation potential (S1+S2) are also high
(22.13-72.12 mg HC/mg rock). These may contribute them to be a good to very good source rock if their
maturity reaches the thermal mature stage.

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Published

2021-04-28

How to Cite

Piyatida Sangtong, Akkhapun Wannakomol, & Bantita Terakulsatit. (2021). PETROLEUM POTENTIAL OF MAE TEEP ORGANIC SEDIMENTS, NORTHERN THAILAND. GEOMATE Journal, 20(80), 128–134. Retrieved from https://geomatejournal.com/geomate/article/view/313