Geothermal Project on TU Delft Campus - DAPGEO-02 Initial Borehole Dataset

This initial data release contains information collected from the multi-purpose research borehole DAPGEO-02, which is part of the seismic monitoring network of the geothermal research project on TU Delft Campus. The borehole DAPGEO-02 makes up the central location of a seismic monitoring. It was drilled to a total depth of 499 m between February and May 2022 and equipped with geophones. Adjacent to it lays a borehole of 200 m depth and two shallower wells 100 m offset from the central borehole. These local monitoring network has been equipped with geophones and optical fibers which connect the boreholes laterally and are also placed downhole. Please refer to the final drilling report for more details. A total of 87 cores have been collected of which 18 cores are from the Maassluis Formation (between 115 and 225 m depth) and 69 cores are from several Paleogene Formations (between 362 m and 415 m depth). Open-hole wireline logging was conducted in three phases from which various types of geophysical logs were collected. In addition, two geophones were installed at 440 m and 490 m depth for seismic monitoring. This initial dataset includes: Drillers borehole records, Inventories of cores, drill cuttings, core shoe samples, and Raw wireline logs. Raw and processed CT-scan data of cores in their coreliner are published as a separate dataset Geothermal Project on TU Delft Campus - DAPGEO-02 Core CT-Scan Data. <br>

本初始公开数据集包含从多用途研究钻孔DAPGEO-02采集的相关信息，该钻孔是代尔夫特理工大学校园（TU Delft Campus）地热研究项目地震监测网络的组成部分。该钻孔为该地震监测网络的核心布设点位，于2022年2月至5月间钻进至总深度499米，并安装了检波器。其旁侧布设一口深度200米的钻孔，另有两口浅井与该中心钻孔的水平偏移量为100米。这套本地监测网络配备了检波器与光纤，光纤可横向连接各钻孔并下入井内。更多细节请参阅最终钻井报告。
本次共采集岩心87块，其中18块采自马斯卢伊斯组（深度区间115~225米），69块采自多套古近纪地层（深度区间362~415米）。裸眼井电缆测井分三阶段实施，采集了多类型地球物理测井数据。此外，为开展地震监测，还在440米与490米深度处各安装了一台检波器。
本初始数据集包含以下内容：钻井作业记录、岩心清单、岩屑、岩心靴样品，以及原始电缆测井数据。保存在岩心筒内的岩心的原始与处理后CT扫描数据，已作为独立数据集《代尔夫特理工大学校园地热项目——DAPGEO-02岩心CT扫描数据》发布。