Chapter 18 Geology and petroleum potential of the Timan–Pechora Basin Province, Russia

The Timan–Pechora Basin Province represents the northeastern-most cratonic block of Eastern European Russia. More than 16 billion barrels of oil (BBO) and 40 trillion cubic feet of gas (TCFG) have been discovered in this basin. Three geological assessment units (AU) were defined for assessing the potential for undiscovered oil and gas resources. The NW Izhma Depression AU encompasses all potential structures and reservoirs in the northwestern part of the Izhma–Pechora Depression, but this part of the basin contains little source and reservoir rocks and so was not assessed quantitatively. The Main Basin Platform AU includes all structures and reservoirs that developed in the central part of the basin where the tectonic evolution and development of petroleum systems were complex. The Foredeep Basins AU includes all potential reservoirs within the thick sedimentary section of the foredeep basins developed during the Permo-Triassic Uralian Orogeny. For the Timan–Pechora Basin Province, the estimated means of undiscovered resources are 3.3 BBO, 17 TCFG and 0.3 billion barrels of natural gas liquids (BBNGL). For the areas of the AUs north of the Arctic Circle in the Timan–Pechora Basin Province, the estimated means of undiscovered resources are 1.7 BBO, 9.0 TCFG and 0.2 BBNGL. The Pechora Sea was assessed with the South Barents Sea Province and is not included in this assessment.

季曼-伯朝拉盆地省（Timan–Pechora Basin Province）为东欧俄罗斯最东北部的克拉通地块。该盆地内已发现超过160亿桶原油（BBO）与40万亿立方英尺天然气（TCFG）。本次评估共划定3个地质评估单元（AU），用于估算待发现油气资源潜力。西北伊日马凹陷地质评估单元（NW Izhma Depression AU）涵盖伊日马-伯朝拉凹陷西北部的所有潜在构造与储层，但该区域烃源岩与储集岩均较为匮乏，因此未开展定量评估。主盆地平台地质评估单元（Main Basin Platform AU）包含盆地中部发育的全部构造与储层，该区域的构造演化过程与油气系统发育均较为复杂。前陆盆地地质评估单元（Foredeep Basins AU）涵盖二叠纪-三叠纪乌拉尔造山运动（Permo-Triassic Uralian Orogeny）期间形成的前陆盆地厚层沉积序列中的所有潜在储层。针对季曼-伯朝拉盆地省，待发现资源的平均估算量为3.3亿桶原油（BBO）、17万亿立方英尺天然气（TCFG）以及0.3亿桶天然汽油（BBNGL）。季曼-伯朝拉盆地省内北极圈以北的地质评估单元区域，其待发现资源的平均估算量为1.7亿桶原油（BBO）、9.0万亿立方英尺天然气（TCFG）以及0.2亿桶天然汽油（BBNGL）。伯朝拉海（Pechora Sea）与南巴伦支海省（South Barents Sea Province）一同开展评估，未纳入本次评估范围。