Magnetotelluric Survey for Hydrocarbon Exploration in Yurihara Oil Field, Northeast Japan

1997 ◽  
Author(s):  
K. Matsuo ◽  
Y. Mitsuhata ◽  
H. Tanaka ◽  
M. Minegisi
Keyword(s):  
Oil Field ◽  
Hydrocarbon Exploration

scholarly journals Sedimentology and diagenesis as ‘hydrocarbon exploration tools’ in the Late Permian Zechstein-2 Carbonate Member (NE Netherlands)

Geologos ◽  
2012 ◽  
Vol 18 (3) ◽  
pp. 163-195 ◽  
Author(s):  
T.J.A. Reijers
Keyword(s):  
The Netherlands ◽  
Oil Field ◽  
Hydrocarbon Exploration ◽  
Gas Reservoirs ◽  
Depositional Facies ◽  
Present Contribution ◽  
Gas Field ◽  
Exploration Tool ◽  
Diagenetic Facies ◽  
Oil Gas

Abstract Hydrocarbon exploration in The Netherlands has a chequered history from serendipitous oil shows via chance oil/ gas discoveries to finding the largest continental European oil field in 1943, followed by finding the largest gas field in the world in 1959. The present contribution traces the development of moderate to good porosity/permeability trends in depositional facies of Zechstein Stassfurt carbonates in a ‘gas play’ intermediate in significance between the above two plays but all in the northern part of The Netherlands. Various depositional facies in the Stassfurt carbonates were turned into ‘carbonate fabric units’ by diagenetic processes creating or occluding the porosity/permeability. This formed moderate to good gas reservoirs in barrier-shoal, open-marine shelf and proximal-slope carbonates in the subsurface of the province of Drenthe in the NE Netherlands. The diagenetic models forming these carbonate fabric units are linked to the variety of facies in a depositional model which shows explain and predicts the reservoir trends. Such depositional/diagenetic facies are ‘translated’ into characteristic petrophysical values recognisable on wire line logs in uncored wells, and in characteristic seismic expressions that show these trends in undrilled areas. This approach has been proven to be effective in delineating porosity trends, visualised by 3-D seismic in the Collendoornerveen field, and thus provides a new exploration ‘tool’ in hydrocarbon exploration .

scholarly journals Biodiversity data and new species descriptions of polychaetes from offshore waters of the Falkland Islands, an area undergoing hydrocarbon exploration

ZooKeys ◽  
2020 ◽  
Vol 938 ◽  
pp. 1-86
Author(s):  
Lenka Neal ◽  
Gordon L. J. Paterson ◽  
David Blockley ◽  
Ben Scott ◽  
Emma Sherlock ◽  
...  
Keyword(s):  
New Species ◽  
Oil Field ◽  
Hydrocarbon Exploration ◽  
Falkland Islands ◽  
Biodiversity Data ◽  
Polychaete Species ◽  
History Museum ◽  
Environmental Impact Assessments ◽  
Morphological Species ◽  
Taxonomic Novelty

Benthic environmental impact assessments and monitoring programs accompanying offshore hydrocarbon industry activities result in large collections of benthic organisms. Such collections offer great potential for systematics, biodiversity and biogeography research, but these opportunities are only rarely realised. In recent decades, the hydrocarbon industry has started exploration activities in offshore waters off the Falkland Islands. A large collection of ca. 25,000 polychaete (Annelida) specimens, representing some 233 morphological species was processed at the Natural History Museum, London. Taxonomic assessment led to recognition of many polychaete species that are new to science. The existing taxonomic literature for the region is outdated and many species in existing literature are likely misidentifications. Initially, an online taxonomic guide (http://falklands.myspecies.info) was created, to provide a single taxonomic source for 191 polychaete species to standardise identification across different environmental contractors working in Falkland Islands. Here, this effort is continued to make data available for 18,015 specimens through publication of raw biodiversity data, checklist with links to online taxonomic information and formal descriptions of five new species. New species were chosen across different families to highlight the taxonomic novelty of this area: Apistobranchus jasoni Neal & Paterson, sp. nov. (Apistobranchidae), Leitoscoloplos olei Neal & Paterson, sp. nov. (Orbiniidae), Prosphaerosyllis modinouae Neal & Paterson, sp. nov. (Syllidae) and Aphelochaeta falklandica Paterson & Neal, sp. nov., and Dodecaceria saeria Paterson & Neal, sp. nov. (both Cirratulidae). The potential of the Falkland Islands material to provide up to date informationfor known species described in the literature is also highlighted by publishing images and redescription of Harmothoe anderssoni Bergström, 1916 and Aphelochaeta longisetosa (Hartmann-Schröder, 1965). Biodiversity and abundance data are made available through a DarwinCore database, including material collected from 83 stations at Sea Lion developmental oil field in North Falklands Basin and voucher specimens’ data collected from exploratory oil wells in East Falklands Basin.

scholarly journals Structural and Economic Analysis of Meyal Oil Field in the Northern Potwar Deformed Zone, Upper Indus Basin, Pakistan

2021 ◽  
Vol 11 (4) ◽  
pp. 65-71
Author(s):  
Muhammad Armaghan Faisal Miraj ◽  
Muhammad Yaseen ◽  
Abid Ali ◽  
Rana Faizan Saleem ◽  
Sher Afgan ◽  
...  
Keyword(s):  
Foreland Basin ◽  
Oil Field ◽  
Hydrocarbon Exploration ◽  
Indus Basin ◽  
Thickness Variation ◽  
Borehole Data ◽  
Subsurface Structures ◽  
Structural Style ◽  
Exploratory Wells ◽  
Meyal Oil Field

Potwar sub-basin is famous for its structural style, hydrocarbon exploration and production activities from Cambrian to Pliocene rocks. Foreland basin related subsurface structures, in the presence of source and seal rocks offer a variety of traps to host hydrocarbons. Meyal Oil field, situated in the NW Potwar sub-basin, is a hydrocarbon resource for the country. Subsurface structures of Meyal area were outlined by interpreting two strike and four dip lines in IHS Kingdom suite. Borehole data of MYL-10, MYL-12 and MYL-13 exploratory wells were incorporated to improve the subsurface understanding. A total five prominent reflectors of Permian, Triassic, Jurassic, Paleocene and Eocene rocks were marked on the seismic sections. The seismic interpretation shows a post Eocene pop-up structure flanked by a back thrust and a fore thrust. Moreover, the time structure maps for Meyal area display a doubly plunging and faulted anticline as a result of south directed compression. Four isochron maps show thickness variation in Permian to Eocene sediments in the study area. The results of interpretation show favorable structural trap for economic hydrocarbon exploration.

Generative topographic mapping for seismic facies estimation of a carbonate wash, Veracruz Basin, southern Mexico

2014 ◽  
Vol 2 (1) ◽  
pp. SA31-SA47 ◽  
Author(s):  
Atish Roy ◽  
Araceli S. Romero-Peláez ◽  
Tim J. Kwiatkowski ◽  
Kurt J. Marfurt
Keyword(s):  
Seismic Attributes ◽  
Oil Field ◽  
Hydrocarbon Exploration ◽  
Seismic Facies ◽  
Topographic Mapping ◽  
Clustering Methods ◽  
Generative Topographic Mapping ◽  
Data Set ◽  
Southern Mexico ◽  
Facies Classification

Seismic facies estimation is a critical component in understanding the stratigraphy and lithology of hydrocarbon reservoirs. With the adoption of 3D technology and increasing survey size, manual techniques of facies classification have become increasingly time consuming. Besides, the numbers of seismic attributes have increased dramatically, providing increasingly accurate measurements of reflector morphology. However, these seismic attributes add multiple “dimensions” to the data greatly expanding the amount of data to be analyzed. Principal component analysis and self-organizing maps (SOMs) are popular techniques to reduce such dimensionality by projecting the data onto a lower order space in which clusters can be more readily identified and interpreted. After dimensional reduction, popular classification algorithms such as neural net, K-means, and Kohonen SOMs are routinely done for general well log prediction or analysis and seismic facies modeling. Although these clustering methods have been successful in many hydrocarbon exploration projects, they have some inherent limitations. We explored one of the recent techniques known as generative topographic mapping (GTM), which takes care of the shortcomings of Kohonen SOMs and helps in data classification. We applied GTM to perform multiattribute seismic facies classification of a carbonate conglomerate oil field in the Veracruz Basin of southern Mexico. The presence of conglomerate carbonates makes the reservoir units laterally and vertically highly heterogeneous, which are observed at well logs, core slabs, and thin section scales. We applied unsupervised GTM classification to determine the “natural” clusters in the data set. Finally, we introduced supervision into GTM and calculated the probability of occurrence of seismic facies seen at the wells over the reservoir units. In this manner, we were able to assign a level of confidence (or risk) to encountering facies that corresponded to good and poor production.

scholarly journals Spit-systems – an overlooked target in hydrocarbon exploration: the Holocene to Recent Skagen Odde, Denmark

2006 ◽  
Vol 10 ◽  
pp. 17-20
Author(s):  
Peter N. Johannessen ◽  
Lars Henrik Nielsen
Keyword(s):  
Oil Field ◽  
Hydrocarbon Exploration ◽  
System Model ◽  
Oil Saturation ◽  
Shallow Marine ◽  
Field Development ◽  
The North ◽  
Reservoir Models ◽  
The North Sea ◽  
Depositional Models

Well-constrained depositional models are essential for successful exploration and field development. The Skagen spitsystem offers a unique possibility for the establishment of a depositional model constrained by excellent outcrops, welldefined palaeogeography, good age control and detailed observations on hydrodynamics and morphology of the prograding part of the spit-system. The model offers a supplementary interpretation of shallow marine sandstones to the existing delta and linear shoreface models. The sand-dominated Skagen spit-system is c.22 km long, 4 km wide and up to 35 m thick, with a sand volume of c.2.2 km3. If filled with oil, this system would contain 0.6 km3 corresponding to 3.8 x 109 barrels assuming a porosity of 30% and an oil saturation of 90%. This is comparable in size with the largest Danish oil field (the Dan field), in the North Sea. Reservoir models for isolated linear ‘offshore’ sandstone bodies have been controversial for many years. Their size and internal indications of palaeocurrent directions are similar to those of the spit-system model, and this model may therefore be applicable for some of these bodies.

scholarly journals GEOCHEMICAL CHARACTERIZATION OF SATELLITE HYDROCARBON FORMATIONS IN PRINOS-KAVALA BASIN (NORTH GREECE)

2007 ◽  
Vol 40 (2) ◽  
pp. 839 ◽  
Author(s):  
P. Kiomourtzi ◽  
N. Pasadakis ◽  
A. Zelilidis
Keyword(s):  
Oil Field ◽  
Hydrocarbon Exploration ◽  
Gas Field ◽  
Reliable Model ◽  
Before And After ◽  
High Sulfur Concentration ◽  
North Aegean ◽  
Turbidite System ◽  
Depositional Setting

Conditions favoring generation, migration and trapping of hydrocarbons generated economically significant reservoirs in Prinos-Kavala Basin. Prinos oil field and South Kavala gas field are characteristic examples. The submarine fan packed the basin during Upper Miocene. The hydrocarbons were accumulated in turbidites, deposited in a strongly reducing environment, with high sulfur concentration. Evaporates are also deposited before and after the turbidite system. In this study, which is part of a doctorate thesis, extracts retrieved from cored samples of two satellite formations in Prinos-Kavala Basin, Epsilon and Kalirahi, selected at the "Prinos equivalent" formations, have been analyzed, using geochemical methods, and found to exhibit common compositional characteristics. The analysis of biomarkers indicates that the bitumens are immature and non-biodegraded, while their origin is considered mainly algal, with minor terrestrial contribution. Variations on characteristic geochemical ratios between formations, such as Pr/Ph, Ts/Tm, oleanane/hopane and steranes index, are attributed to differences on the type of organic mater input, or the depositional setting of sediments. The identification of the organic matter type, the hydrocarbons generation, migration paths and traps of each structure within the basin is vital for the evaluation of a reliable model of the basin and further hydrocarbon exploration in North Aegean basins

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