The Nelson Field, Blocks 22/11, 22/6a, 22/7, 22/12a, UK North Sea
The Nelson Field, Blocks 22/11, 22/6a, 22/7, 22/12a, UK North Sea
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英国北海尼尔森油田，22/11、22/6a、22/7、22/12a 区块
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
P. Lynes
中科院分区：
文献类型：
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作者：
J. Kunka;G. Williams;B. Cullen;J. Boyd;G. R. Dyer;J. Garnham;A. Warnock;J. Wardell;A. Davis;P. Lynes
Nelson油田位于英国北海中部22/11、22/6a、22/7和22/12a区块。Nelson是一个简单的倾闭构造，是位于Forties- montrose高地上的一系列古新世Forties砂岩段油藏之一。第一口勘探井22/11-1是1967年由海湾石油公司钻探的。尽管在Forties砂岩段的异质岩段发现了油气，但该井在测试中未能流动，因此被放弃。3D地震数据于1985年首次获得，并于1988年由Enterprise Oil plc钻探了22/11-5井，从而发现了Nelson。经过评估钻井，Nelson油田获得了生产许可，并于1994年2月投产。该油气类型为轻质40°API原油，GOR为555 SCF/BBL，据信来自东福蒂斯盆地。Nelson油田是由一个36槽最小设施平台开发的。目前有23个平台生产商，4个海底生产商和4个平台注水井。石油出口通过福尔蒂斯管道系统，天然气出口通过富尔玛天然气系统。据估计，该地区的原始石油储量为7.9亿桶。截至1999年底，该油田的产量为2.61亿桶。自Whyatt等人（1992）描述该油田以来，又钻了28口井，收集了大量新的地质和地球物理数据。这包括6500英尺的古新世岩心和4D地震数据。这使得对纳尔逊油田的结构和层序地层有了更详细的了解。本文阐述了地震填图、高分辨率生物地层学和沉积学在建立尼尔森场模型中的重要性。
Abstract The Nelson Field is located in Blocks 22/11, 22/6a, 22/7 and 22/12a in the UK Central North Sea. Nelson is a simple dip closed structure and is one of a series of Palaeocene Forties Sandstone Member oil accumulations situated on the Forties-Montrose High. The first exploration well on the prospect, 22/11-1, was drilled by Gulf Oil in 1967. Although hydrocarbon shows were encountered in a heterolithic section of Forties Sandstone Member, the well failed to flow on test and was abandoned. 3D seismic data were first acquired in 1985 and led to the discovery of Nelson in 1988 when the 22/11-5 well was drilled by Enterprise Oil plc. Following appraisal drilling, Nelson was granted production consent and the field came on-stream in February 1994. The hydrocarbon type is a light 40° API crude with a GOR of 555 SCF/BBL and is believed to be sourced from the East Forties Basin. The Nelson Field is developed from a 36 slot minimum facilities platform. Currently there are 23 platform producers, four sub-sea producers and four platform water injectors. Oil export is via the Forties Pipeline System and gas export is via the Fulmar Gas System. Oil originally in place is estimated at 790 million barrels of oil (MMBBL). Up to end-1999, the field had produced 261 MMBBL. Since the field was described by Whyatt et al. (1992), a further 28 wells have been drilled resulting in the collection of a considerable amount of new geological and geophysical data. This now includes a total of 6500 ft of Palaeocene core and 4D seismic data. This has enabled a more detailed understanding of the structure and sequence stratigraphy of the Nelson Field. This paper illustrates the importance of seismic mapping, high resolution biostratigraphy and sedimentology in developing the Nelson Field model.