Benzo[b]naphthothiophenes and alkyl dibenzothiophenes: molecular tracers for oil migration distances
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Abstract
The secondary migration of petroleum is one of the most critical geological processes responsible for the accumulation of hydrocarbons in a sedimentary basin. Pyrrolic nitrogen compounds such as carbazoles and benzocarbazoles are thought to be practical molecular indicators for estimating relative migration distances of oil. In light oils or condensates, however, considerable analytical errors are usually caused by low concentrations of NSO-compounds. Here we show that polycyclic sulfur aromatic hydrocarbons such as dibenzothiophene, C1∼C3 alkylated dibenzothiophenes and benzo[b]naphthothiophenes, which are present in relatively higher concentrations than the pyrrolic nitrogen compounds, exhibit changes in both absolute and relative concentrations that correlate with migration distances. The polycyclic sulfur aromatic hydrocarbons related parameters — benzo[b]naphtho[2,1-d]thiophene/{benzo[b]naphtho[2,1-d]thiophene + benzo[b]naphtho[1,2-d]thiophene} (abbreviated as [2,1]BNT/([2,1]BNT+[1,2]BNT) and the concentration of total dibenzothiophenes plus benzo[b]naphthothiophenes — are proposed by this paper to trace the oil migration distances.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Benzo[b]naphthothiophenes and alkyl dibenzothiophenes: molecular tracers for oil migration distances |
| Series title | Marine and Petroleum Geology |
| DOI | 10.1016/j.marpetgeo.2014.06.012 |
| Volume | 57 |
| Year Published | 2014 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Central Energy Resources Science Center |
| Description | 15 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Marine and Petroleum Geology |
| First page | 403 |
| Last page | 417 |
| Country | China |
| Other Geospatial | Tarim Basin;Tahe Oil Field |
| Google Analytic Metrics | Metrics page |