Pyrolysis-Gas Chromatography Database Table

The pyrolysis-gas chromatography database table contains publicly available results from Geoscience Australia's organic geochemistry (ORGCHEM) database and supporting oracle databases for open system pyrolysis-gas chromatography (pyrolysis-GC) analyses performed on either source rocks or kerogen samples taken from boreholes and field sites. Sedimentary rocks that contain organic matter are referred to as source rocks (e.g., organic-rich shale, oil shale and coal) and the organic matter within the rock matrix that is insoluble in organic solvents is named kerogen. The analyses are undertaken by various laboratories in service and exploration companies using a range of instruments. Data includes the borehole or field site location, sample depth, stratigraphy, analytical methods, other relevant metadata, and the molecular composition of the pyrolysates. The concentrations of the aliphatic hydrocarbon, aromatic hydrocarbon and organic sulfur compounds are given in several units of measure [e.g., percent (resolved compounds) in the S2 peak (wt% S2), milligrams per gram of rock (mg/g rock), micrograms per gram of kerogen (mg/g kerogen) etc.].These data are used to determine the organic richness, kerogen type and thermal maturity of source rocks in sedimentary basins. The results are used as input parameters in basin analysis and petroleum systems modelling to evaluate the potential for hydrocarbon generation in a sedimentary basin. These data are collated from destructive analysis reports (DARs), well completion reports (WCRs) and literature. The data are delivered in the Source Rock Pyrolysis-Gas Chromatography web services on the Geoscience Australia Data Discovery Portal at https://portal.ga.gov.au which will be periodically updated.

本热解-气相色谱（pyrolysis-GC）数据库表收录了澳大利亚地质调查局（Geoscience Australia）有机地球化学（ORGCHEM）公开数据库及配套Oracle数据库的公开成果，数据源自对钻孔与野外现场采集的烃源岩或干酪根（kerogen）样品开展的开放体系热解-气相色谱分析。含有机质的沉积岩被称为烃源岩（source rocks），例如富有机质页岩、油页岩及煤炭，而岩石基质中不溶于有机溶剂的有机质则被命名为干酪根。该类分析由多家服务机构与勘探公司使用各类仪器完成。数据集涵盖钻孔或野外现场位置、样品埋深、地层、分析方法、其他相关元数据，以及热解产物的分子组成。数据集提供了脂肪烃、芳香烃与有机硫化合物的浓度数据，采用多种计量单位[例如S2峰内解析化合物占比（S2峰质量百分比，wt% S2）、毫克每克岩石（mg/g rock）、微克每克干酪根（mg/g kerogen）等]。此类数据可用于确定沉积盆地内烃源岩的有机质丰度、干酪根类型及热成熟度。其分析结果可作为盆地分析与石油系统模拟的输入参数，用以评估沉积盆地的油气生成潜力。本数据集整理自破坏性分析报告（destructive analysis reports, DARs）、完井报告（well completion reports, WCRs）及公开文献。数据集可通过澳大利亚地质调查局数据发现门户（Geoscience Australia Data Discovery Portal）的烃源岩热解-气相色谱网络服务获取，网址为https://portal.ga.gov.au，该平台将定期更新数据。