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首页> 外文期刊>Oceanology >Geological Structure and Petroleum Resource Potential of the North Sea Basin
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Geological Structure and Petroleum Resource Potential of the North Sea Basin

机译：北海盆地的地质构造和石油资源潜力

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摘要

The North Sea basin occupies a spacious depression almost isometric in shape. In the west and northwest, the basin is bordered by the continental crust consolidated during the Precambrian, Caledonian, and Hercynian orogenic epochs, which now forms epiplatformal orogenic structures. They are represented by the London-Brabant uplift and the Arden massif in the southwest and south and the Baltic Shield in the east and northeast. The North Sea basin may be considered as an ancient aulacogen that was transformed in the Early Mesozoic into a complex system of continental rifts and grabens. The sedimentary cover of the basin is represented by a thick (8.5-12.5 km) Ordovician-Quaternary sequence. Oil and gas generation in the sedimentary cover of the basin is likely connected with four main productive sequences: the coaliferous Upper Carboniferous (Westphalian), the subsalt Zechstein, the Jurassic-Lower Cretaceous (Lotharingian, Toar-cian, Kimmeridgian, and Weldian bituminose shales), and the shaly Cenozoic. The large oil and gas reserves in the North Sea's sedimentary cover (over 280 fields) implies that the above-mentioned sequences have realized their oil-generating potential. The present-day position of the main oil and gas generation zones in the sedimentary section of the North Sea explains the distribution of the oil and gas fields through the basin from the genetic standpoint. The petroleum resource potential of the basin is still significant. In this regard, most promising are the spacious shelf areas, turbidite sediments, deep Paleozoic sequences, and continental slopes in the northern part of the basin, which remains insufficiently investigated.
机译：北海盆地占据了一个几乎等轴测的宽大凹陷。在西部和西北部，该盆地与前寒武纪，加里东纪和海西时期的造山纪时期固结的大陆壳交界，现在形成了上平台造山构造。它们的代表是西南部和南部的伦敦-布拉班特隆起和Arden地块，东部和东北部则是波罗的海盾。北海盆地可被认为是古老的造毛器，在中生代早期转变为大陆裂谷和grab陷的复杂系统。该盆地的沉积层以厚奥陶纪-第四纪层序（8.5-12.5 km）为代表。该盆地沉积覆盖层中的油气生成可能与四个主要生产层序有关：上石炭统（威斯特伐利亚），盐下的Zechstein，侏罗系-下白垩统（罗萨林格，Toar-cian，Kimmeridgian和Weldian沥青页岩） ）和泥质新生代。北海沉积覆盖层中的大量石油和天然气储藏（超过280个油田）意味着上述序列已经实现了其生油潜力。从遗传学角度来看，北海沉积区主要油气产区的当前位置解释了整个盆地的油气田分布。该盆地的石油资源潜力仍然很大。在这方面，最有前途的是盆地北部的宽阔的陆架区域，浊积岩沉积物，深层的古生代层序和大陆斜坡，目前仍未进行充分的调查。

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