An Early Cretaceous lithostratigraphic and biostratigraphic framework for the Britannia Field reservoir (Late Barremian–Late Aptian), UK North Sea
An Early Cretaceous lithostratigraphic and biostratigraphic framework for the Britannia Field reservoir (Late Barremian–Late Aptian), UK North Sea
复制标题
英国北海不列颠尼亚油田储层（晚巴雷姆期 - 晚阿普第期）的早白垩世岩石地层和生物地层框架
DOI：
10.1144/petgeo.6.4.345
复制
发表时间：
2000
影响因子：
1.7
通讯作者：
L. Gallagher
中科院分区：
文献类型：
--
作者：
N. Ainsworth;L. A. Riley;L. Gallagher
提出了适用于不列颠油田(15/29、15/30、16/26和16/27区块)的下巴雷面-上阿普提统岩石地层方案。不列颠砂岩组储层正式划分为三个亚段(15/30-9型井)：拉普沃斯(巴雷米世晚期至阿普提斯早期)、基尔达(阿普田晚期)和博逊(阿普田晚期)。拉普沃斯成员被细分为三个单元，拉普沃斯‘A’(巴雷米世晚期)，费施施费尔内部的拉普沃斯‘B’(阿普提亚早期)和拉普沃斯‘C’(阿普提安早期)。巴雷米世早期至阿普特上瓦尔霍尔组划分为7个单元：‘V3A’、‘V3B’、‘V3C’、‘V3D’、‘Fischschiefer层’和‘V4’。上覆的索拉组和罗比组被细分为“下”索拉组(阿普提亚晚期)的“S1”和“S2”单元，以及“上”索拉组(阿尔卑斯早期)的“S3”和“S4”单元。罗德比组(中？至阿尔卑斯晚期)被细分为三个单元：‘R2’、‘R3’和‘R4’。利用钙质超微浮游动物、微体古生物学和孢粉学的研究成果，确定了巴列纪早期至阿尔比期早期的高分辨率生物地层分带方案。其中，共识别出49个带和38个亚带(12个微型动物区带和4个亚带，23个孢粉带和19个亚带，14个微型浮游生物带和15个亚带)。其中，5个微古生物带(及4个亚带)、11个孢粉带(及15个亚带)、7个钙质纳米板吨带(及10个亚带)直接适用于不列颠水库剖面。
A Lower Barremian–Upper Aptian lithostratigraphic scheme applicable to the Britannia Field (Blocks 15/29, 15/30, 16/26 and 16/27) is presented. The Britannia Sandstone Formation reservoir is formally subdivided into three members (type well 15/30-9); the Lapworth (Late Barremian to Early Aptian), Kilda (Late Aptian) and Bosun (latest Aptian) members. The Lapworth Member is subdivided into three units, Lapworth ‘A’ (Late Barremian), the intra-Fischschiefer Lapworth ‘B’ (intra-Early Aptian) and Lapworth ‘C’ (Early Aptian). The Early Barremian to Early Aptian upper Valhall Formation is subdivided into seven units: ‘V3A’ the Hauptblatterton, ‘V3B’, ‘V3C’, ‘V3D’, Fischschiefer Bed, and ‘V4’. The overlying Sola and Rodby Formations are subdivided into Units ‘S1’ and ‘S2’ of the ‘Lower’ Sola Formation (Late Aptian), plus Units ‘S3’ and ‘S4’ of the ‘Upper’ Sola Formation (Early Albian). The Rodby Formation (Middle? to Late Albian) is subdivided into three units: ‘R2’, ‘R3’ and ‘R4’. A high resolution biostratigraphic zonal scheme is defined for the Early Barremian to earliest Albian interval, utilizing calcareous nannoplankton, micropalaeontology and palynology. Within this, 49 zones and 38 subzones (12 microfaunal zones and 4 subzones, 23 palynological zones and 19 subzones, and 14 nannoplankton zones and 15 subzones) are recognized. Of these, 5 micropalaeontological zones (and 4 subzones), 11 palynological zones (and 15 subzones) and 7 calcareous nannoplank-ton zones (and 10 subzones) are directly applicable to the Britannia reservoir section.