IODP Expedition 372B/375 Source rock analyzer (SRA)

SRA is run for the purpose of safety monitoring and yields information about thermal maturation and source of hydrocarbons, as well as petroleum potential, in the sediment or rocks at a drilled site. Samples are heated in a pyrolysis oven in an inert atmosphere to quantitatively and selectively determine free hydrocarbons contained in the sample and the hydrogen- and oxygen-containing compounds that are volatilized during the cracking of unextractable organic matter in the sample (kerogen).SRA 旨在用于安全监测，可提供钻探点位处沉积物或岩石内的热成熟度、烃类来源以及油气潜力相关信息。将样品置于惰性气氛下的热解炉中加热，可定量且选择性地测定样品中所含的游离烃，以及样品内不可萃取有机质（干酪根，kerogen）裂解过程中挥发的含氢与含氧化合物。