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Площадь: 203512.56 км²
Vøring basin
Deepwater areas in the shelf of Mid-Norway have been explored for a long time with several oil and gas fields discovered in deepwater areas of the Møre Basin and Vøring Basin (Fig. 1). Tectonic evolution in the shelf of Mid-Norway is closely related to cracking of the Atlantic. Generally, the shelf of Mid-Norway has experienced three tectonic evolution stages: pre-rifting (Early Triassic), rifting (Early Triassic–Paleocene), and passive continental margin (Eocene to the present). During the course, a series of Mesozoic–Cenozoic sedimentary depressions were formed in these basins (Fig. 2).
Fig. 1. Distribution of basins and deepwater oil and gas fields in the shelf of Mid-Norway (according to Refs.).
Fig. 2. Geological section of the Vøring basin in the shelf of Mid-Norway (according to Ref.).
Hydrocarbon source rocks in the shelf of Mid-Norway include Lower Jurassic delta plain mud shale and coal measures, and Upper Jurassic marine shale. The Upper Jurassic marine shale acts as key hydrocarbon source rocks. Key reservoirs include Middle Jurassic rifting marine sandstone and Cretaceous–Paleogene turbidite sandstone, predominantly with Middle Jurassic rifting marine sandstone. These basins contain two types of play assemblages: lower generation and upper preservation, and upper-generation and lower preservation. Majority of traps are structural traps, with marine mudstone as cap rocks. Oil/gas predominantly migrated over short distances along fractures, conductive layers and faults to form reservoirs; they might have migrated over long distances along surfaces of non-conformity of formations or connecting sandstone structures to form reservoirs.
Since 1980, Norway has shifted its focus of oil/gas exploration to the shelf of Mid-Norway. So far, multiple oil and gas fields have been discovered in deepwater areas of the basin (Fig. 1, Table 1). According to the United States Geological Survey (USGS), there are more oil/gas fields to be discovered in the shelf of Mid-Norway, especially in poorly explored deepwater areas.
Table 1. Major deepwater oil and gas fields in the shelf of Mid-Norway
Data source: Giant discoveries of oil and gas fields in global deepwaters in the past 40 years and the prospect of exploration. Gongcheng Zhang, Hongjun Qu, Guojun Chen, Chong Zhao, Fenglian Zhang, Haizhang Yang, Zhao Zhao, Ming Ma. 2019
Следующий Бассейн: Skagerrak - Kattegat