scholarly journals STUDY OF JURASSIC AND NEOCOMIAN AGE BARRIER TRAPS TO INCREASE THE PETROLEUM POTENTIAL OF THE YAMAL PENINSULA

2016 ◽  
pp. 25-29
Author(s):  
I. V. Kislukhin ◽  
V. I. Kislukhin
Keyword(s):  
Sedimentary Cover ◽  
Yamal Peninsula ◽  
Geologic Structure ◽  
Petroleum Potential ◽  
North East ◽  
The North ◽  
Barrier Type ◽  
The Yamal Peninsula

In the article the geologic structure of the Jurassic and Neocomian age sedimentary cover in the Yamal Peninsula is considered. The regional unconformities of the north-east strike where the traps of barrier type are formed and the petroleum potential of which has been proved in Novoportovskoye, Rostovtelecoye and in a number of other fields have been mapped.

scholarly journals Petroleum potential of the Upper Jurassic Hareelv Formation, Jameson Land, East Greenland

2018 ◽  
pp. 85-113 ◽  
Author(s):  
Jørgen A. Bojesen-Koefoed ◽  
Morten Bjerager ◽  
H. Peter Nytoft ◽  
Henrik I. Petersen ◽  
Stefan Piasecki ◽  
...  
Keyword(s):  
Significant Proportion ◽  
Upper Jurassic ◽  
Geochemical Data ◽  
Eastern Canada ◽  
Petroleum Potential ◽  
East Greenland ◽  
North East ◽  
The North ◽  
Clay Formation

The marine, mudstone-dominated Hareelv Formation (Upper Jurassic) of Jameson Land, East Greenland is a representative of the widespread Kimmeridge Clay Formation equivalents, sensu lato, known from the greater North Atlantic region, western Siberia and basins off eastern Canada. These deposits constitute the most important petroleum source-rock succession of the region. The present study reports petroleum geochemical data from the 233.8 m thick succession penetrated by the fully cored Blokelv-1 borehole, and includes supplementary data from outcrop samples and other boreholes in Jameson Land. The succession consists of basinal mudstone intercalated with a significant proportion of gravity-flow sandstones, both in situ and remobilised as injectites. The mudstones are generally rich in organic carbon with values of TOC reaching nearly 19 wt% and high pyrolysis yields reaching values of S2 up to nearly 43 kg HC/ton. Hydrogen Indices are up to 363. The data presented herein demonstrate that weathering of abundant pyritic sulfur adversely affects the petroleum potential of the kerogen in outcrop samples. The succession is thermally immature to early mature, except where intrusions have locally heated adjacent mudstones. The documentation of rich gas/oil-prone Upper Jurassic successions in Jameson Land is important for the assessment of the regional petroleum potential, including the North-East Greenland continental shelf.

scholarly journals Distribution of Yellow Wagtail Forms Motacilla flava – Complex in the North of Western Siberia, Russia

2017 ◽  
Vol 10 (1) ◽  
pp. 1-9
Author(s):  
Mikhail G. Golovatin ◽  
Vasiliy A. Sokolov
Keyword(s):  
Western Siberia ◽  
Northern Taiga ◽  
Yamal Peninsula ◽  
Yellow Wagtail ◽  
Forest Tundra ◽  
Ob River ◽  
North East ◽  
The North ◽  
Taiga Forest ◽  
Shrub Tundra

On the basis of the materials obtained from the studies carried out from 2000 to 2015, we present the data on distribution of the Yellow Wagtail forms in the north of Western Siberia, i.e. within the overlapping boundaries of the ranges of a complex set of several polytypical forms – Motacilla flava sensu lato. Four forms have been identified here: two forms from the group of Western Yellow Wagtails (M. f. thunbergi and M. f. beema & flava) and two forms from the group of Eastern Yellow Wagtails (M. t. plexa and M. t. tschutschensis). Western “black-headed” form M. f. thunbergi is spread in the area of the northern taiga, forest tundra and south shrub tundra within the Ob River basin, while eastern “black-headed” form M. t. plexa is found in the shrubby tundra and further to the east from the Ob River in forest tundra and northern taiga. Western “light headed” wagtails M. f. beema & flava spread as far as 65º05'N along the floodplain of the Ob River. Eastern “light-headed” wagtail M. t. tschutschensis penetrates the Taz peninsula and, through the anthropogenic sites, the north-east coast of the Yamal Peninsula, i.e. the Sabetta area as far as 71º14'N. The entire range of the Yellow Wagtail is characterized by the interchange of zones inhabited by “black-headed” (without the expressed eyebrows on males) and “light-headed” (with notable eyebrows on males or white-headed) forms from the north to the south.

scholarly journals Mineralogical and geochemical features of volcanics from the pre-Jurassic basement of the western part of Yamal

2020 ◽  
pp. 103-114
Author(s):  
Vladimir Sergeevich PONOMAREV ◽  
◽  
Yuriy Viktorovich EROKHIN ◽  
Kirill Svyatoslavich IVANOV ◽  
Nadezhda Nikolaevna FARRAKHOVA ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Sedimentary Cover ◽  
Geological Structure ◽  
Island Arc ◽  
Lead Chloride ◽  
The Arctic ◽  
Yamal Peninsula ◽  
The West ◽  
Metasomatic Process ◽  
The Yamal Peninsula

Relevance of the work. The Arctic part of the West Siberian megabasin is the main source of oil and gas in Russia, therefore, the study of the geological structure of this region is extremely important. Recently, Russia has lodged an application to extend its territory in the Arctic Ocean along the ridges that stretch from the continental shelf. Unfortunately, at the same time, we know little about the geological structure of the Arctic in the region of Western Siberia, where the thickness of the sedimentary cover is very high (about 3–4 km), therefore, the study of the basement of the Yamal Peninsula seems to be extremely urgent. The purpose of this work is mineralogical, petrological and geochemical study of dolerites from the pre-Jurassic basement of the Bovanenkovskaya area (well No. 114) within the territory of the gas condensate field of the same name, located in the western part of the Yamal Peninsula. Scope of the work. This work can be useful in constructing geological maps of the pre-Jurassic basement of the Yamal Peninsula. Results and conclusions. We have studied the mineralogical and geochemical features of dolerites from the pre-Jurassic basement of the Bovanenkovskaya area (well No. 114, sampling depth – 3210 m) of the West Siberian megabasin. The mineralogy of the rocks is represented by augite, diopside, albite, magnesian chamosite, ferrous hornblende, calcite, siderite, dolomite, anorthoclase, grossular, zeolite (gmelenite-K), pyrite, chalcopyrite, and rare lead chloride – cotunnite. The rocks underwent minor transformations in the conditions of the lower greenschist metamorphism, as well as secondary alterations in the form of superimposed propylitization. As a result of this low-temperature metasomatic process, zeolite, carbonate (calcite, dolomite, and siderite) and sulfide mineralization composed of pyrite and chalcopyrite, as well as cotunnite, which apparently replaced the dissemination of galena, were formed in the rock. Judging by geological position of the region, these dolerites are most likely formed at shallow depths during continental rifting. Remelting of the Paleozoic island arc substrate during the Early Triassic rifting and volcanism provided some closeness to the island arc trend in the geochemical features of these rift volcanics.

Directional Radial Drilling Increases Reservoir Coverage with Precise Wellbore Placement Resulting in a Significant Production Increase from a Thin Reservoir

2021 ◽  
Author(s):  
Ayrat Bashirov ◽  
Ilya Galas ◽  
Marat Nazyrov ◽  
Dmitry Kuznetsov ◽  
Azamat Akkuzhin
Keyword(s):  
Soviet Union ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Thick Layer ◽  
Komi Republic ◽  
Carbonate Sediments ◽  
North East ◽  
The North ◽  
Post War ◽  
Radial Drilling

Abstract In many oil and gas provinces not only in Russia, but throughout the world, carbonate strata make up a significant portion of the sedimentary cover, and large accumulations of hydrocarbons are associated with them. However, the purposeful study of them as reservoirs for hydrocarbons in our country practically began only in the post-war years. In the special petrography laboratory carbonate rocks composing various stratigraphic complexes of almost all oil and gas provinces of the Soviet Union were studied, and in particular, Paleozoic carbonate strata of the Timan-Pechora province, Ural-Volga region, Belarus, Kazakhstan, ancient Riphean-Cambrian formations of Yakutia and relatively young strata of the Late Cretaceous of the northeastern Ciscaucasia. Carbonates are widespread sedimentary rocks. A very significant part of them was formed in the conditions of vast shallow-water marine epicontinental basins. A large number of works are devoted to the study of such deposits. However, issues related to the conditions of formation of carbonate sediments and their postsedimentary changes cannot be considered resolved, as well as the classification of the rocks themselves. The analyzed field is the Osvanyurskoye one. It was discovered in 2007. The field is located in the north-east of the European part of the Russian Federation, 2 km from Usinsk in the Komi Republic. The field is a part of the Timano-Pechora oil and gas province and it is a mature field (fig. 1). The objective was a 2.5m thick layer of the Serpukhov horizon.

Construction of a Multipurpose Exploration Well in the Jurassic Deposits Subsequent Transfer to Production Enabled by Metal Expandable Barrier Installed Behind the Casing

2021 ◽  
Author(s):  
Ivan Valentinovich Lebedev ◽  
Aydar Razinovich Gabdullin ◽  
Oleg Vasilievich Korepin ◽  
Sergey Stanislavivich Dubitskit ◽  
Sergey Vladimirovich Novikiv ◽  
...  
Keyword(s):  
Natural Gas ◽  
Oil And Gas ◽  
Yamal Peninsula ◽  
Resource Base ◽  
The North ◽  
The Russian Federation ◽  
The Government ◽  
Northern Territories ◽  
Exploration Well ◽  
The Yamal Peninsula

Summary The resource base of the north of the West Siberian oil and gas province is the basis of Russia's energy strategy. Among the northern territories of the province, the Nadym-Purskaya, Pur-Tazovskaya and Yamal oil and gas regions (OGRs) are the leaders in terms of estimated gas reserves (Figure 1). However, the largest deposits of the first two OGRs are in the stage of falling production. Therefore, the main prospects should be associated with the Yamal OGR, which has not yet been put into active operation. It is logical that along with the development of traditional methods of extraction of "dry" natural gas, the government of the Russian Federation has approved a plan for the production of liquefied natural gas based on the fields of the Yamal Peninsula, which is currently being actively implemented by PJSC "NOVATEK". (https://www.novatek.rU/m/business/exploration/)

Central- and North-East Greenland Rifted Margin Composite Tectono-Sedimentary Element, From Onshore East Greenland to the Greenland Sea

2021 ◽  
pp. M57-2017-15
Author(s):  
Michael B. W. Fyhn ◽  
Peter Alsen ◽  
Morten Bjerager ◽  
Jørgen A. Bojesen-Koefoed ◽  
Flemming G. Christiansen ◽  
...  
Keyword(s):  
Depositional Environments ◽  
Source Rocks ◽  
Rift System ◽  
East Atlantic ◽  
Petroleum Potential ◽  
East Greenland ◽  
North East ◽  
The North ◽  
Marine Sedimentation ◽  
Uplift And Erosion

AbstractThe Devonian to lower Eocene Central-East and NE Greenland Composite Tectono-Sedimentary Element CTSE) is a part of the North-East Atlantic rift system. East and NE Greenland geology is therefore analogues to that of the prolific basins on the conjugate Atlantic margin and in the North Sea in many respects. None the less, hydrocarbon discoveries remain. The presence of world-class source rocks, reservoirs and seals, together with large structures, may suggest an East and NE Greenland petroleum potential, however. The TSE was established through Devonian - Carboniferous, Permian - Triassic and Jurassic - Cretaceous rifting interspersed by periods of uplift and post-rift sagging. Subsequently, Paleocene - Eocene magma-rich rifting accompanied the North-East Atlantic break-up. Depositional environments through time varied in response to the changing tectonism and climate. None-marine deposition dominated until the end of the Triassic, only interrupted by marine sedimentation during Late Permian - Early Triassic times. Subsequently, marine conditions prevailed during the Jurassic and Cretaceous. Volumetric series of basalt erupted over most of the CTSE during the latest Paleocene - early Eocene following a significant latest Cretaceous - Paleocene regression, uplift and erosion event. Since the Eocene, denudation pulses have removed much of these basalts uniquely exposing the up to 17 km strata of the CTSE.

scholarly journals New Catastrophic Gas Blowout and Giant Crater on the Yamal Peninsula in 2020: Results of the Expedition and Data Processing

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 71
Author(s):  
Vasily Bogoyavlensky ◽  
Igor Bogoyavlensky ◽  
Roman Nikonov ◽  
Tatiana Kargina ◽  
Evgeny Chuvilin ◽  
...  
Keyword(s):  
Oil And Gas ◽  
World Ocean ◽  
Pressure Rise ◽  
Yamal Peninsula ◽  
The North ◽  
Academy Of Sciences ◽  
First Time ◽  
Interpretation Of Satellite Images ◽  
The Yamal Peninsula

This article describes the results of an Arctic expedition studying the new giant gas blowout crater in the north of Western Siberia, in the central part of the Yamal Peninsula in 2020. It was named C17 in the geoinformation system “Arctic and the World Ocean” created by the Oil and Gas Research Institute of the Russian Academy of Sciences (OGRI RAS). On the basis of remote sensing, it can be seen that the formation of the crater C17 was preceded by a long-term growth of the perennial heaving mound (PHM) on the surface of the third marine terrace. Based on the interpretation of satellite images, it was substantiated that the crater C17 was formed in the period 15 May–9 June 2020. For the first time, as a result of aerial photography from inside the crater with a UAV, a 3D model of the crater and a giant cavity in the ground ice, formed during its thawing from below, was built. The accumulation of gas, the pressure rise and the development of gas-dynamic processes in the cavity led to the growth of the PHM, and the explosion and formation of the crater.

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