The integration of public domain lithostratigraphic data into a series of cross-border North Sea well-penetration maps

2020 ◽  
pp. SP494-2020-25
Author(s):  
Henk Kombrink ◽  
Stefano Patruno
Keyword(s):  
North Sea ◽  
Public Domain ◽  
Petroleum Exploration ◽  
The Public ◽  
Cross Border ◽  
The North ◽  
Starting Point ◽  
Geological Information ◽  
Paper Form ◽  
The North Sea

AbstractAs geological information about the North Sea is increasingly made available to the public, there is great potential to build cross-border datasets to enable people to more rapidly filter relevant geological data and also to better understand and further study the subsurface. This paper discusses the construction of such a geological database and presents the associated map set. Public domain lithostratigraphic data from petroleum exploration and appraisal wells drilled in the Norwegian, Danish, German, Dutch and UK North Sea sectors were used to create a series of 13 well-penetration maps, ranging from Basement to Eocene age. In order to produce the maps, lithostratigraphic well tops had to be translated into a chronostratigraphic scheme, followed by building a database and subsequent mapping in a GIS. Three well categories were used for each of the maps: wells that (1) fully penetrate a chronostratigraphic interval, (2) prove it is absent or (3) reach total depth in the interval under consideration. The resulting maps, which will all be discussed and presented in this paper, form a starting point for multiple types of (petroleum) geological screening studies. The North Sea database is freely available in QGIS format and can be easily imported into any geospatial software platform.

Stratigraphy of the oil and gas reservoirs: UK Continental Shelf

1991 ◽  
Vol 14 (1) ◽  
pp. 9-18 ◽  
Author(s):  
Stewart Brown
Keyword(s):  
Continental Shelf ◽  
North Sea ◽  
Oil And Gas ◽  
Sedimentary Basins ◽  
Public Domain ◽  
The Public ◽  
The North ◽  
Marine Gravity ◽  
The North Sea ◽  
The Uk

The petroliferous sedimentary basins of the UK Continental Shelf are remarkable for the diversity of their reservoir strata. Reservoir rocks in fields currently in production range in age from Devonian to earliest Eocene, but significant hydrocarbon discoveries have also been made in rocks as as young as the mid-Eocene. The reservoirs are predominantly siliciclastic rocks, with facies ranging from continental fluvial and aeolian, to marine gravity flow deposits from sub-wave base environments.In this paper stratigraphic context of the producing horizons in the UK Continental Shelf (UKCS), principally the North Sea, is reviewed, and the sedimentation of the reservoir strata placed in an outline geological history. The main producing horizons are described in summary. Matters of stratigraphic terminology and correlation both between fields and between basins are discussed.A lithostratigraphy for the UK southern North Sea was established by Rhys (1974), and for the central and northern North Sea by Deegan & Scull (1977). Although these schemes have proved to be fairly robust, in the last 13 years the acquisition of new data plus a proliferation of new terms not fully documented in the public domain, argue strongly for a comprehensive revision and rationalization which is beyond the scope of this paper. Attempts in the public domain to standardize nomenclature across international boundaries in the North Sea, pursued by Deegan & Scull (1977) for the UK and Norwegian sectors, have lapsed for the most part in subsequent years.Economic basement in the UK North Sea can be regarded at present

Strategy for Protecting the North Sea: A Chemical Industry Perspective

1991 ◽  
Vol 24 (10) ◽  
pp. 269-276
Author(s):  
J. R. Lawrence ◽  
N. C. D. Craig
Keyword(s):  
North Sea ◽  
Chemical Industry ◽  
Important Research ◽  
The Public ◽  
The North ◽  
Anthropogenic Inputs ◽  
Seven Principles ◽  
The North Sea ◽  
The Cost

The public has ever-rising expectations for the environmental quality of the North Sea and hence of everreducing anthropogenic inputs; by implication society must be willing to accept the cost of reduced contamination. The chemical industry accepts that it has an important part to play in meeting these expectations, but it is essential that proper scientific consideration is given to the potential transfer of contamination from one medium to another before changes are made. A strategy for North Sea protection is put forward as a set of seven principles that must govern the management decisions that are made. Some areas of uncertainty are identified as important research targets. It is concluded that although there have been many improvements over the last two decades, there is more to be done. A systematic and less emotive approach is required to continue the improvement process.

From single-species advice to mixed-species management: taking the next step

2004 ◽  
Vol 61 (8) ◽  
pp. 1398-1409 ◽  
Author(s):  
Morten Vinther ◽  
Stuart A. Reeves ◽  
Kenneth R. Patterson
Keyword(s):  
North Sea ◽  
Fishery Management ◽  
Single Species ◽  
Mixed Species ◽  
The North ◽  
Recent Approach ◽  
Starting Point ◽  
The North Sea ◽  
Management Advice ◽  
Management Priorities

Abstract Fishery management advice has traditionally been given on a stock-by-stock basis. Recent problems in implementing this advice, particularly for the demersal fisheries of the North Sea, have highlighted the limitations of the approach. In the long term, it would be desirable to give advice that accounts for mixed-fishery effects, but in the short term there is a need for approaches to resolve the conflicting management advice for different species within the same fishery, and to generate catch or effort advice that accounts for the mixed-species nature of the fishery. This paper documents a recent approach used to address these problems. The approach takes the single-species advice for each species in the fishery as a starting point, then attempts to resolve it into consistent catch or effort advice using fleet-disaggregated catch forecasts in combination with explicitly stated management priorities for each stock. Results are presented for the groundfish fisheries of the North Sea, and these show that the development of such approaches will also require development of the ways in which catch data are collected and compiled.

Fuentes the Young

PMLA ◽  
2013 ◽  
Vol 128 (3) ◽  
pp. 708-710
Author(s):  
John Ochoa
Keyword(s):  
Mexico City ◽  
North Sea ◽  
Public Service ◽  
Carlos Fuentes ◽  
Public Service Announcement ◽  
The Public ◽  
Late Night ◽  
The North ◽  
Pollution Problem ◽  
The North Sea

Carlos Fuentes was a dapper man. His physical bearing, his way of dressing, and his manners were all exquisite. He favored tailored Italian suits, supple loafers, pocket squares. He liked tony international places: he once said he owed the idea for La muerte de Artemio Cruz (1962; The Death of Artemio Cruz), perhaps the most “Mexican” of his novels, “to the North Sea and a beach in Holland” (Interview). But his cosmopolitanism got him into trouble, such as when a well-intentioned but off-key televised public-service announcement resulted in late-night TV parodies. Addressing the pollution problem in Mexico City, Fuentes pleaded for the public to save his “beloved” city—all while standing in an idyllic spot in Cambridge, England.

Connect and Divide

2014 ◽  
Vol 35 (2) ◽  
pp. 200-219
Author(s):  
Eike-Christian Heine
Keyword(s):  
North Sea ◽  
Transport Infrastructure ◽  
Military Strategy ◽  
Environmental Consequences ◽  
The North ◽  
Starting Point ◽  
History Of ◽  
The North Sea ◽  
The Baltic ◽  
Kiel Canal

The Kiel Canal (built between 1886 and 1895) connects the North Sea and the Baltic for seagoing vessels, yet, being 100 km long, about 10 m deep and 100 m wide, it also divides a landscape. This finding is the starting point for analysing the effects of infrastructure that facilitates communication and exchange but also produces obstructions and rivalries. This article explores the ambiguous effects this piece of infrastructure had on politics, technology, labour, trade and military strategy. The ‘deep ditch’ also had severe environmental consequences that were palpable until well into the twentieth century. By considering both the ‘positive’ and the ‘negative’ of the waterway, the narrative of ‘connect-and-divide’ avoids the still-too-often told affirmative story of transport infrastructure. Instead, it and opens the outlook to a multi-faceted history of transport infrastructures.

scholarly journals Pockmark formation and activity, U.K. block 15/25, North Sea

1994 ◽  
Vol 41 ◽  
pp. 34-49
Author(s):  
Alan Judd ◽  
David Long ◽  
Michael Sankey
Keyword(s):  
North Sea ◽  
North Atlantic ◽  
Petroleum Exploration ◽  
Gas Migration ◽  
The North ◽  
Pit Formation ◽  
The North Sea ◽  
Recent Sediments ◽  
Migration Pathways ◽  
Exploration Well

Digital seismic reflection (boomer) profiles of an active pockmark, in UK block 15/25, North Sea, reveal that the feature was formed prior to the deposition of the most recent sediments, probably by vigorous (or even catastrophic) gas escape. This release may have been triggered by the melting of ground ice when North Atlantic waters first entered the North Sea after the last glaciation, about 13,000 years ago. Possible sources of the gas are investigated by examining the composite log from a nearby petroleum exploration well; it is concluded that, although the gas may .originate from the Kimmeridge Clay, it probably comes from lignites of Tertiary age. Its migration towards the seabed is interrupted by local accumulations at several horizons, the shallowest of which (<80 m below seabed) is trapped beneath clayey sediments of the Coal Pit Formation. The topography of the base of this layer apparently controls the location of gas migration pathways to the seabed. As these lead to pockmarks which formed long ago, and as these pockmarks are still active today, it is probable that the migration pathways have remained throughout the intervening period. Gas accumulating beneath the Coal Pit Formation may migrate laterally to reach the pathways.

scholarly journals Das Verb „brauen“ im Helgoländischen: mit Beibehaltung der starken Flexion und reich entwickelter Semantik

Us Wurk ◽  
2020 ◽  
Vol 69 (3-4) ◽  
pp. 105-114
Author(s):  
N. Århammar
Keyword(s):  
20Th Century ◽  
North Sea ◽  
Dictionary Entry ◽  
Figurative Meaning ◽  
Beer Brewing ◽  
The North ◽  
Starting Point ◽  
The North Sea ◽  
The Senses ◽  
Germanic Languages

The verb „brew“ in the North Frisian dialect of the North Sea island of Heligoland is in two respects remarkable: first it has retained its original strong inflection (section 1) and secondly it developed a number of special meanings during the 19/20th century (section 2). I have tried to demonstrate how this great diversity came about: The starting point for thesemantic development was probably the analogy ʽbrew kettleʼ (for beer brewing) ~ ʽsteam boilerʼ (of steam-boats). In a small seafaring nation a shift of meaning from ʽbrew (beer)ʼ → ʽdrive (a ship)ʼ may seem rather natural; less so the further steps via *ʽmove in generalʼ → ʽwalk briskly, runʼ and so on (→ ʽlive, keep house, manage to get on well (as a single)ʼand ʽbe busy, workʼ etc.). Sense 8. of the dictionary entry, a figurative meaning, stands apart, namely ʽconcoct, contrive, prepare, bring about, causeʼ: spec. evil, mischief, trouble, woe (OED). It is noted that this sense was developed in most Germanic languages and it probably represents a much older sprout on the helig. brau-tree than do the senses 2. to 7. Insection 3, I deal with the helig. idiom Bin brau ʽto bring into disorderʼ and the helig.-wfris. parallel uun Bin ~ yn ʼe/ʼt bûn ʽin disorderʼ. – In the appendix the revised and enlarged word article brau with its prefix compounds is presented

GEOLOGY AND GEOPHYSICS IN THE DISCOVERY OF GIANT OIL FIELDS

1973 ◽  
Vol 13 (1) ◽  
pp. 3
Author(s):  
P. E Kent
Keyword(s):  
North Sea ◽  
Oil Field ◽  
Petroleum Exploration ◽  
The Arctic ◽  
Continental Margins ◽  
Lateral Plate ◽  
Vertical Movements ◽  
The North ◽  
The North Sea ◽  
Northern Alaska

The paper gives the case histories of discovery in three major oil field areas-Iran, northern Alaska and the North Sea. These areas differ in their regional features and in the consequent requirements for geological and geophysical investigation and delineation. In Iran the earlier discoveries were based entirely on surface geology; geophysics became important with the need for deep survey. In northern Alaska structures mapped at surface gave only minor shows. Seismic surveys following geological deductions on reservoir development led to discovery of the giant Prudhoe Bay field near the Arctic coast. In the North Sea, in the much more complex extension of Permian-Mesozoic basins already well known on land, location of structures has been entirely by seismic survey.There is no close relation between the new Global Tectonics and the location of major oil field belts. The factors controlling the latter are multiple and complex. Resolution of the relative importance of vertical (epeirogenic) displacement as against the effect of lateral plate movement is nevertheless critical, particularly in Alaska.There is at present a large unresolved discrepancy between the times at which some continental margins developed (North Atlantic, East and West Indian Ocean) and with the physical evidence of sea floor spreading. In the three areas quoted, breakdown of the continental margins by vertical movements started in the Permian (—280 million years), but spreading is dated as beginning only in the late Cretaceous (—70 million years). It is the earlier movements, unexplained by current global theories, which have most relevance for petroleum exploration.

Cross-border megasequence stratigraphy of the Northern, Central and Southern North Sea: a comparative tectono-stratigraphic synthesis

2021 ◽  
pp. SP494-2020-228
Author(s):  
Stefano Patruno ◽  
Henk Kombrink ◽  
Stuart G. Archer
Keyword(s):  
North Sea ◽  
Regional Scale ◽  
Foreland Basin ◽  
First Order ◽  
Cross Border ◽  
Southern North Sea ◽  
The North ◽  
Lithostratigraphic Units ◽  
The North Sea ◽  
Basin Fill

AbstractThe Devonian-Recent tectono-stratigraphic history of the Northern, Central and Southern North Sea is here reviewed at a regional scale and four novel cross-border pseudo-Wheeler diagrams are presented to summarize the stratigraphic evolution of the cycles of basin fill and uplift/erosion. In this scheme, six first-order megasequence boundaries have been defined, characterized by extensive and long-lasting erosional hiatuses and major coastal regressions: (1) Caledonian (or Base Devonian) Unconformity; (2) Variscan-Saalian (or Base Permian) Unconformity; (3) Mid Cimmerian (or Intra-Aalenian) Unconformity; (4) Late Cimmerian (or Base Cretaceous) Unconformity; (5) Atlantean (or Near-Base Tertiary) Unconformity; (6) Eridanos (or Mid-Miocene) Unconformity. These surfaces have been linked to regional causal factors ranging from: orogenesis-related compressional uplifts, in either active plate margin settings (1) or foreland basin settings (2); intra-plate dynamically supported uplifts associated with the development of mantle plumes (3, 5 and 6); the end-of-rifting and associated widespread erosion of tilted fault block crests (4).The aforementioned megasequence boundaries punctuate the geodynamic evolution of the North Sea area and facilitate the sub-division of the entire the North Sea sedimentary basin fill into six megasequences, named here from A to F. All the lithostratigraphic units of the North Sea (formations and members) have been described within the context of this first-order tectono-stratigraphic framework. The correlation power of certain stratigraphic markers are also compared and contrasted, together with the potential cross-border equivalence of sedimentary units on different sides of the political median lines.

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