The Knarr Field: a new development at the northern edge of the North Sea
The Knarr Field: a new development at the northern edge of the North Sea
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纳尔油田：北海北部边缘的新开发项目
DOI：
10.1144/pgc8.23
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发表时间：
2017
影响因子：
4.5
通讯作者：
M. Poole
中科院分区：
文献类型：
--
作者：
S. S. Skarpeid;J. Churchill;J. Hilton;C. Izatt;M. Poole
Knarr油田位于挪威北海北部，位于布伦特三角洲航道之外。Knarr油田于2008年被Jordbaer井发现，2011年Jordbaer Vest井的成功开采为该油田增加了额外的资源。该油田面积约为20平方公里。原始储量估计为26msm 3 （163mbbl）。该油藏为Pliensbachian Cook组，目前的埋藏深度约为- 3700 m海底真垂直深度（TVDSS）。在Knarr， Cook组被分成5个砂岩，由4个页岩层段隔开，这些层段可以在整个油田中相互关联。下部三层砂岩（下库克）沉积于潮汐主导环境，而上部两层砂岩（上库克）沉积于波浪主导的浅海环境。Knarr地区Cook组储层物性非常好，孔隙度高达28%，渗透率超过1 d，良好的储层物性是绿泥石颗粒包覆抑制成岩石英发育的结果。该油田由3个采油厂和3个注水井组成，通过浮式生产储卸船（FPSO）进行生产。2015年3月发现了第一个油田。
Abstract The Knarr Field is located in the northern Norwegian North Sea, beyond the Brent Group delta fairway. Knarr was discovered in 2008 with the Jordbaer well, additional resources were added to the field in 2011 with the successful Jordbaer Vest well. The field extends over an area of approximately 20 km 2 . The original oil in place is estimated to be 26 MSm 3 (163 MBBL). The reservoir is the Late Pliensbachian Cook Formation and its current burial depth is approximately −3700 m true vertical depth subsea (TVDSS). In Knarr, the Cook Formation is split into five sandstones that are separated by four shale intervals which can be correlated across the field. The three lower sands (Lower Cook) are interpreted to have been deposited in a tidally-dominated environment, while the upper two sandstones (Upper Cook) were deposited in a wave-dominated shallow-marine setting. The reservoir properties of the Cook Formation in the Knarr area are remarkably good for a reservoir at this depth, with porosities up to 28% and permeabilities in excess of 1 D. The good reservoir properties are the result of grain-coating chlorite, which has inhibited diagenetic quartz development. The field is developed with three oil producers and three water injectors produced via a floating production storage and offloading vessel (FPSO). First oil was achieved in March 2015.