NRS-15078 | Petroleum geological reports (PGR)

Petroleum Geological reports relate to the search for hydrocarbons that may be a source of petroleum. The reports detail exploration work and surveys conducted to locate thick deposits of unmetamorphosed sediments that may be hydrocarbons. The reports draw on aeromagnetic and gravity data, seismic reflection and refraction data and surface geology to ascertain if an area contains useful deposits of hydrocarbons. The reports may be an interpretation of new data, a reinterpretration of existing data, or a combination of the two.The reports may contain maps of borehole and seismic survey locations; aeromagnetic pixel maps showing total magnetic intensity; gravimetric pixel maps showing gravity anomalies, diagrams showing perspective view of sediment thickness and seismic lines.The reports may also contain a brief history or summary of exploration and mining in the area, an interpretation of survey data, conclusions and recommendations regarding further exploration or mining. Some reports may contain a notice inserted into the reports to acknowledge a missing document.The Petroleum geological report series is part of the Geological Survey collection, a unique collection of unpublished reports on the results of exploration submitted to the then Department of Mineral Resources by companies and individuals as a consequence of exploration and mining licences being granted. The exploration reports are essential sources of information for explorers, and also add to the understanding of the State's geology, mineral, coal and petroleum resources. If the company is still engaged in mining activity or if mining licences are still active then reports may be confidential and unavailable.Due to the high access rates for the Geological Survey Reports, the then Department of Mineral Resources undertook a copying program making digitised copies available on the Department of Planning, Industry and Environment website under Geological Survey (DIGS). Interested parties can view published and unpublished exploration, mining and Departmental reports on-screen and these can be downloaded. The images have been slightly downgraded to minimise download times, however, higher quality images can be ordered from DIGS. Custody History The original reports comprising the Geological Survey collection were transferred from the Department of Mineral Resources to the State Records Authority between 1999 and 2001. A note concerning access to the Petroleum Geological Reports The original reports will not be issued to the public so those interested in accessing them should refer to the Geological Survey (DIGS) website where copies of non-confidential reports are available. The reports are indexed and can be searched by title, author, subject terms, tenement, location, map reference, report number, and report year. In addition to the reports being indexed, the various documents making up the report, such as contents page, text, maps, and photographs, are also indexed and therefore retrievable.

石油地质报告（Petroleum Geological Reports）涉及对可能成为石油来源的碳氢化合物（hydrocarbons）的勘探。报告详细记录了为定位可能含碳氢化合物的厚层未变质沉积物（unmetamorphosed sediments）而开展的勘探工作与调查。报告利用航空磁测（aeromagnetic）数据、重力数据、地震反射（seismic reflection）与折射数据（refraction data）及地表地质（surface geology）信息，以确定某区域是否存在具有利用价值的碳氢化合物矿床。报告内容可能是对新数据的解读、对已有数据的重新解读，或二者的结合。

报告可能包含钻孔（borehole）与地震勘测位置图；显示总磁强度（total magnetic intensity）的航空磁测像素图；显示重力异常（gravity anomalies）的重力像素图（gravimetric pixel maps）；展示沉积物厚度透视图及地震测线（seismic lines）的图表。

报告还可能包含该区域勘探与采矿的简史或摘要、勘测数据解读、关于进一步勘探或采矿的结论与建议。部分报告中可能插入说明，以确认某份文件缺失。

石油地质报告系列是地质调查收藏（Geological Survey Collection）的一部分，该收藏是一组独特的未发表勘探结果报告，由企业及个人依据获批的勘探与采矿许可证（exploration and mining licences）提交至当时的矿产资源部（Department of Mineral Resources）。这些勘探报告是勘探人员的重要信息来源，也有助于加深对本州地质、矿产、煤炭及石油资源的理解。若相关企业仍在开展采矿活动或采矿许可证仍有效，则报告可能属于机密且无法获取。

鉴于地质调查报告的高访问量，当时的矿产资源部启动了一项复制计划，将数字化副本（digitised copies）上传至规划、工业与环境部网站（Department of Planning, Industry and Environment Website）的地质调查局（DIGS）板块。感兴趣的各方可在线查看已发表及未发表的勘探、采矿与部门报告，并可下载。为缩短下载时间，图像质量略有降低，但可向DIGS申请获取更高质量的图像。

保管历史 构成地质调查收藏的原始报告于1999年至2001年间从矿产资源部移交至州档案管理局（State Records Authority）。

关于石油地质报告访问的说明 原始报告不向公众发放，因此有意访问者应参考地质调查局（DIGS）网站，该网站提供非机密报告副本。报告已索引化（indexed），可通过标题、作者、主题词（subject terms）、矿区（tenement）、位置、地图参考（map reference）、报告编号及报告年份进行检索。除报告本身已索引外，构成报告的各类文件（如目录页、文本、地图及照片）也已索引，因此均可检索（retrievable）。