High-pressure/high-temperature wells are traditionally very challenging for biostratigraphical analyses. The temperatures achieved cause the organic matter to become highly mature and palynomorphs are altered, to an extent that can make identification extremely challenging. This study compares two wells and shows that the type of drilling bit and the control of drilling parameters can have a positive impact in the palynology recovery. Both wells are studied for palynology and the well with the best drilling parameters yielded generally good recovery, and although the palynomorphs also exhibit a high thermal maturity, it was possible to confidently identify enough palynomorphs to define the age of the penetrated sediments.

The biostratigraphy study reveals a Rhaetian – Early Toarcian dataset from a complete stratigraphic succession that wasn't previously recorded in the Central North Sea. A lithostratigraphic unit is yet to be defined to characterise the sediments interpreted in this paper. The ecological analyses, using statistical methods, assessed the temporal and spatial variations in vegetation and palaeoenvironments. They focused on the Early Jurassic and indicate that during this time the landscape was diverse with a variety of habitats occupied by terrestrial plants dominated primarily by swamp and xerophyte types living near the coastal area.

高压/高温井传统上对生物地层分析非常具有挑战性。达到的温度会导致有机物质变得高度成熟，孢粉型也发生了改变，在一定程度上使得识别极具挑战性。本研究比较了两口井，表明钻头的类型和钻井参数的控制可以对孢粉恢复产生积极影响。两口井都进行了孢粉学研究，具有最佳钻井参数的井普遍获得了良好的采收率，虽然孢粉体也表现出高热成熟度，但有可能自信地识别出足够的孢粉体来确定渗透沉积物的年龄。

生物地层学研究揭示了一个完整的地层序列中的雷蒂亚 - 早期托阿尔阶数据集，该数据集之前未在北海中部记录。尚未定义岩石地层单位来表征本文中解释的沉积物。生态分析使用统计方法评估植被和古环境的时空变化。他们专注于早侏罗世，并指出在此期间景观多种多样，各种栖息地被陆生植物占据，主要是生活在沿海地区的沼泽和旱生植物类型。