Sentence examples for petroleum formation from inspiring English sources

The vanadium content of some petroleum ash probably originates as a vanadium porphyrin in some of the organisms involved in petroleum formation.

The first, or immature, stage of petroleum formation is dominated by biological activity and chemical rearrangement, which convert organic matter to kerogen.

During the immature, or biological, stage of petroleum formation, biogenic methane (often called marsh gas) is produced as a result of the decomposition of organic material by the action of anaerobic microbes.

Hydrous pyrolysis experiments were conducted on immature petroleum source rocks containing different types of kerogen (I and II) at a temperature range of 250 550 °C to investigate the role of kerogen type in petroleum formation at high temperature.

Deeper burial by continuing sedimentation, increasing temperatures, and advancing geologic age result in the mature stage of petroleum formation, during which the full range of petroleum compounds is produced from kerogen and other precursors by thermal degradation and cracking (the process by which heavy hydrocarbon molecules are broken up into lighter molecules).

In this sense, petroleum formation water and oil samples were collected from the Campos Basin, Brazil, with the aim of isolating microorganisms and evaluating their ability to degrade distinct classes of hydrocarbon biomarkers (9,10-dihydrophenanthrene, phytane, nonadecanoic acid and 5α-cholestane).

These extreme conditions are representative of those encountered in ultra-deep petroleum formations beneath the deepwaters of the Gulf of Mexico.

The performance of the SRK and PR cubic equations of state (EoS) for predicting molar volumes at the extremely high temperature, high pressure (HTHP) conditions associated with ultra-deep petroleum formations, are improved with a temperature-dependent volume-translation (VT) term.

Decompression-driven rifting, a crucial action for increasing surface area and for petroleum deposit formation, begins with the formation of a decompression crack.

Oil formation volume factor (FVF) has obvious significance in petroleum engineering.

During the catalytic hydroconversion of vacuum residue fractions of bitumen or petroleum, the formation of mesophase can lead to fouling of reactor internals.