The paper presents the latest state of knowledge on the vertical and lateral ranges and characteristics of prospective zones (PZ) within the Lower Paleozoic unconventional hydrocarbon systems in the Baltic-Podlasie-Lublin Basin (Poland). The PZ were identified within the prospective formations based on rigorously determined criteria with the application of stratigraphic, sedimentological, mineralogical, petrographic, geochemical, petrophysical, and geomechanical studies, and interpretations of borehole logs. Archival geological data and information acquired from boreholes drilled recently in concession areas have also been applied in the interpretations. Following these criteria, four prospective zones have been distinguished. The deposits encompass partly or almost completely the Piaśnica, Sasino, and Jantar formations and the lower part of the Pelplin Formation. The characteristic feature of the Lower Paleozoic deposits at the East European Craton (EEC) margin in Poland is the diachronous appearance of the Sasino and Jantar black shale formations from west to east. The Baltic area is most prospective for the occurrence of unconventional hydrocarbon reservoirs in shale formations, specifically the Łeba Elevation, where all 4 prospective zones have been distinguished. The occurrence of liquid and gaseous hydrocarbons is expected in all zones. Due to the very high TOC content and geochemical characteristics, the Piaśnica Formation within PZ1 is the main petroleum source rock in the Polish part of the Baltic Basin. PZ2 (partly corresponding to the Sasino Formation) present in a large part of the Baltic Basin, is the next important prospective unit, despite not being uniform. PZ3 within the Jantar Formation was distinguished only on a limited area of the ˜eba Elevation. Due to the low content of organic matter, the Lublin area is characterized by the lowest hydrocarbon potential. However, low values of that parameter are compensated by a greater thickness and lateral range of PZ4, partly corresponding to the Pelplin Formation. Comparison with other areas within the Lower Paleozoic Baltic Basin reveals the occurrence of shale deposits that may constitute a potential source of hydrocarbons, and that demonstrate diachronism. Towards the east and south-east, ever younger deposits possess the potential for hydrocarbon accumulations. In Poland, in the western part of EEC, these are: the Furongian and the Lower Tremadocian Piaśnica Formation, the Sandbian and Katian Sasino Formation and the Lower/Middle Llandovery (Rhuddanian and Aeronian) Jantar Formation. In the central part of the Baltic Basin (Lithuania), these are the Upper Ordovician and Aeronian shale successions. In the southeastern part of the basin (Ukraine), the Ludlow strata are considered to be the most promising in terms of the potential unconventional hydrocarbons accumulations.

中文翻译：

---

波兰东欧克拉通边缘带寒武系、奥陶系和志留系页岩地层非常规油气藏远景带

本文介绍了波罗的海-波德拉西-卢布林盆地（波兰）下古生界非常规油气系统中远景带 (PZ) 的垂直和横向范围和特征的最新知识状态。根据严格确定的标准，应用地层学、沉积学、矿物学、岩石学、地球化学、岩石物理和地质力学研究以及对钻孔测井的解释，在预期地层中确定了 PZ。从最近在特许区钻探的钻孔中获得的档案地质数据和信息也已应用于解释中。根据这些标准，已区分出四个预期区域。矿床部分或几乎全部包括 Piaśnica、Sasino、和 Jantar 地层以及 Pelplin 地层的下部。波兰东欧克拉通（EEC）边缘的下古生界矿床的特征是自西向东穿时出现 Sasino 和 Jantar 黑色页岩地层。波罗的海地区最有可能在页岩地层中出现非常规油气储层，特别是 Łeba 海拔，在那里已经区分了所有 4 个勘探区。预计所有区域都会出现液态和气态碳氢化合物。由于 TOC 含量和地球化学特征非常高，PZ1 内的 Piaśnica 组是波罗的海盆地波兰部分的主要石油烃源岩。PZ2（部分对应于 Sasino 组）存在于波罗的海盆地的大部分地区，是下一个重要的潜在单位，尽管不是统一的。Jantar 组内的 PZ3 仅在 ??eba 高程的有限区域内被区分。由于有机质含量低，卢布林地区的油气潜力最低。然而，该参数的低值被更大的 PZ4 厚度和横向范围所补偿，部分对应于 Pelplin 地层。与下古生界波罗的海盆地内其他地区的比较揭示了页岩沉积物的存在，这些沉积物可能构成潜在的碳氢化合物来源，并显示出历时性。在东部和东南部，更年轻的矿床具有油气聚集的潜力。在波兰，在欧洲经济共同体的西部，这些是：芙蓉阶和下特雷马多奇阶 Piaśnica 组，Sandbian 和 Katian Sasino 组以及下/中 Llandovery（Rhuddanian 和 Aeronian）Jantar 组。在波罗的海盆地中部（立陶宛），这些是上奥陶统和埃罗尼亚页岩层序。在盆地的东南部（乌克兰），就潜在的非常规油气聚集而言，Ludlow 地层被认为是最有希望的。