Application of Biomarkers and Oil Fingerprinting for Genetic Classification of Oil and Prediction of Petroleum Migration Pathways of Aryskum Downfold of South-Torgay Depression

2021 ◽  
Author(s):  
Yessimkhan Sherekhanovich Seitkhaziyev ◽  
Rakhim Nagangaliyevich Uteyev ◽  
Nariman Danebekovich Sarsenbekov
Keyword(s):  
Genetic Difference ◽  
Genetic Classification ◽  
Petroleum Migration ◽  
The North ◽  
South West ◽  
Biomarker Analysis ◽  
Identical Composition ◽  
Field Form ◽  
Migration Pathways

Abstract This article presents the results of fingerprinting and biomarker analysis of 254 oil samples derived from 11 different fields and structures in Aryskum downfold of the South-Torgay depression for genetic classification of oils and prediction of petroleum migration pathways. According to the oil fingerprinting results based on patented Shell technology, 12 groups of oils were found: oils in reservoirs of central part of Nuraly field form the first group, while oils in the producing horizons of Western Nuraly, Southern Khayrgeldy, Akshabulak East and fluvial beds of Central Akshabulak fields form the second group. The oils related to the third group were found in the wells exploiting producing horizon I in the north dome of Central Akshabulak, while the oils from wells penetrating lower producing horizons(III-IV-V) of Central Akshabulak, upper producing horizons in South dome of Central Akshabulak and of all producing horizons of the north dome of Akshabulak South constitute the fourth group. The fifth group includes only one oil sample of different genesis from well № 37, which penetrates the paleo-channel №13 at South Akshabulak. The genetic difference of this oil from other oils was also confirmed by its biomarker composition. Most of oil fingerprinting star plots in Aksay field are identical and form the sixth group, although the seventh group comprises only one oil № 47 in Aksay. Sample set with №8 was discovered in the pay zones of Taur field and well № 75, exploiting the same horizon in the northern part of Aksay. The ninth oil group was identified in cretaceous producing layers of the Khairgeldy South-West field and Jurassic beds of the Khargeldy North field, while the identical composition of the cretaceous oil from the Khairgeldy North and Khairgeldy fields forms the tenth group. The last eleventh group includes oil from well №. 12 on South-west Khairgeldy, although it has some similarities with Taur oils. For 20 oil samples was carried out biomarker analysis, according to the results of which all studied oils were formed in terrigenous (shaly) OM, deposited in lacustrine environment. Oils from central Nuraly are more thermally mature and lighter in density than those from western Nuraly. Oils of Akshabulak East are thermally less mature than oils of Central Akshabulak and Akshabulak South despite its deeper deposition. Based on the performed analysis, in the conclusion were presented 5 prospective hydrocarbon accumulation zones for increasing hydrocarbon reserves in the future. But the results of the performed studies provide valuable information only when integrated with confirmed geological and seismic data.

scholarly journals Application of biomarkers and oil fingerprinting for genetic classification of oil families and prediction of oil migration pathways in Nuraly field

2021 ◽  
Vol 3 (2) ◽  
pp. 61-75
Author(s):  
Y. Sh. Seitkhaziyev ◽  
R. N. Uteyev ◽  
M. K. Mustafaev ◽  
Sh. Liu ◽  
N. D. Sarsenbekov ◽  
...  
Keyword(s):  
Thermal Maturity ◽  
Genetic Classification ◽  
Hydrocarbon Migration ◽  
Northeastern Part ◽  
Communication Assessment ◽  
Biomarker Analysis ◽  
Petroleum Accumulation ◽  
Different Origins ◽  
Migration Pathways

This paper presents the interpretation of the results of biomarker analysis and oil fingerprinting of all producing wells (36 samples) of Nuraly field for genetic typing and fluid communication assessment within the field, followed by predicting the hydrocarbon migration pathways. According to the biomarker study, it was revealed that the oils of central and western Nuraly have genetically different origins, and the petroleum accumulation in the southern part of West Nuraly was formed by the continuous secondary migration of HC from the northeastern and northwestern directions. Oils from central Nuraly field have higher thermal maturity and lower density than those of western Nuraly do. The thermal maturity of samples from Central Nuraly decreases from the northeastern part of Nuraly towards the southwestern part, which may also attest to hydrocarbon migration pathways. The presence of gas caps in the northeastern part of Central Nuraly may be due to their high thermal maturity.

The Lithology of the Inferior Oolite, Dundry (North Somerset)

1930 ◽  
Vol 67 (11) ◽  
pp. 517-521 ◽  
Author(s):  
D. S. Cleak
Keyword(s):  
Previous Literature ◽  
South Coast ◽  
The South ◽  
The North ◽  
South West

The petrology of the Mid-Jurassic sands in the south-west of England has been described both by Professor P. G. H. Boswell and Dr. J. G. A. Skerl. Professor Boswell has dealt with the Toarcian-Aalenian sands from various localities between Cheltenham and the Dorset coast; Dr. Skerl with certain Bajocian and Bathonian beds in the North Cotteswolds. The present paper gives some account of the lithology and terrigenous minerals of the oolitic limestones of Dundry, an area approximately midway between the Cheltenham region and the south coast. Dundry Hill is an isolated patch of Oolite some 8 miles west of the Bath Hills, and Dundry village, which stands on its crest, is 5 miles south of Bristol. The geology and palaeontology of the area have received the attention of many geologists from the time of Conybeare and Phillips, but here only the work of S. S. Buckman and E. Wilson need be referred to, since these authors fully review the previous literature. Buckman and Wilson described the rocks in great detail, and their classification of the strata has been utilized here.

An Outline of Chinese Geology

1921 ◽  
Vol 58 (8) ◽  
pp. 370-377
Author(s):  
J. S. Lee
Keyword(s):  
Middle Part ◽  
The South ◽  
Glacial Deposit ◽  
North East ◽  
The North ◽  
South West ◽  
Upper Sinian ◽  
Sinian System ◽  
North Western

To the south of the Tsing-ling Range the above classification of the Sinian System no longer holds good. The Kisinling Limestone of western Hu-peh—a massive grey limestone grading downwards into a slaty limestone and slates—has yielded in its upper part gigantic Orthoceras, or the pagoda stone, and other Ordovician fossils; and is therefore regarded as equivalent to the upper and the middle part of the Sinian in north-east China. Unconformably underlying the Kisinling Limestone, a glacial deposit, the Nantou Tillite, was found by Willis and Blackwelder at Nan-tou, near the north-western entrance of the I-chang Gorge (about long. 111° 10′ E., lat. 30° 45′ N.). Mr. V. K. Ting has verbally informed the writer that this interesting deposit extends towards the south-west for a considerable distance. The occurrence of Asaphus and Trinucleus to the south of Ning-kiang (about long. 106° E., lat. 32° 45′ N.) makes it highly probable that, there, the upper Sinian is exposed among other folded Palæozoic strata.

Geographical distribution of land birds in Australia - A numerical analysis

1969 ◽  
Vol 17 (5) ◽  
pp. 821 ◽  
Author(s):  
J. Kikkawa ◽  
K Pearse
Keyword(s):  
Numerical Analysis ◽  
Numerical Method ◽  
Geographical Distribution ◽  
Information Analysis ◽  
North East ◽  
The North ◽  
South West ◽  
Species Groups ◽  
Species Pattern

The divisive information analysis was used for the hierarchical classifications of faunal areas and faunal elements of Australia from the distribution of 464 species of land birds at 121 selected sites. The faunal areas are delimited from the classification of the sites in terms of the distributions of species, superspecies, genera, and polytypic genera, separately. For the classification of faunal elements only species groups and genera groups were used. The derived faunal areas produced concentric zonation showing remarkable resemblances to the faunal subdivisions proposed by earlier workers who used intuitive methods for the classification. This demonstrates empirically the applicability of the numerical method to zoogeography. Comparison between the species pattern and the genera pattern of distribution suggests the Kimberley line as the oldest barrier separating the central fauna from the northern fauna. This is followed by the barriers separating the faunas of Tasmania, the south-west, and the north-east respectively, in order of increasing recency. In the distribution of species, new terms of reference are proposed to denote the faunal areas and the species groups characterizing the areas.

Stanowiska reliktowego gatunku Betula humilis (Betulaceae) w Dolinie Górnego Nurca na Nizinie Północnopodlaskiej

2019 ◽  
pp. 161-168
Author(s):  
Aleksander Kołos
Keyword(s):  
Drainage Ditches ◽  
North West ◽  
Hay Meadows ◽  
The North ◽  
South West ◽  
North Eastern ◽  
New Localities ◽  
Western Border ◽  
Betula Humilis ◽  
Trees And Shrubs

Betula humilis Schrank (shrubby birch) is among the most endangered shrub species in Poland. All localities are in the eastern and northern parts of the country, where the species reaches the western border of its geographical range in Europe. Betula humilis is disappearing in Poland due to wetland melioration and shrub succession. Over 80% of the localities described in Poland have not been confirmed in the last 20 years. Five new localities of B. humilis in the North Podlasie Lowland were recorded from 2008 to 2019 in the Upper Nurzec Valley (Fig. 1): 1–1.5 km south-west of Pawlinowo village (in the ATPOL GC7146 plot) and 1.5–2 km north-west of Żuki village (ATPOL GC7155, GC156 and GC166). The population near Pawlinowo (locality 1) is currently composed of ~80 individuals (101 individuals were noted in 2010) and is one of the largest populations in north-eastern Poland. Betula humilis grows there within patches dominated by Salix rosmarinifolia and megaforbs. The population at locality 5 is composed of 18 individuals. At the remaining localities, only 1–4 individuals were found, scattered along drainage ditches surrounded by hay meadows. At some of these localities the species is threatened with extinction. It is suggested to remove competitive trees and shrubs (mainly Populus tremula, Betula pubescens and Salix cinerea) in order to maintain the local populations.

The Metamorphosed Limestones and Associated Contaminated Igneous Rocks of the Carlingford District, Co. Louth

1932 ◽  
Vol 69 (5) ◽  
pp. 209-233 ◽  
Author(s):  
G. D. Osborne
Keyword(s):  
Igneous Rocks ◽  
The South ◽  
Ordnance Survey ◽  
Igneous Complex ◽  
North East ◽  
The North ◽  
South West ◽  
Carboniferous Limestone ◽  
Contamination Effects

THE Carlingford-Barnave district falls within the boundaries of Sheet 71 of the Ordnance Survey of Ireland, and forms part of a broad promontory lying between Carlingford Lough on the north-east and Dundalk Bay on the south-west. The greater part of this promontory is made up of an igneous complex of Tertiary age which has invaded the Silurian slates and quartzites and the Carboniferous Limestone Series. This complex has not yet been investigated in detail, but for the purposes of the present paper certain references to it are necessary, and these are made below. The prevalence of hybrid-relations and contamination-effects between the basic and acid igneous rocks of the region is a very marked feature, and because of this it has been difficult at times to decide which types have been responsible for the various stages of the metamorphism.

scholarly journals Diocesan Licensing and Medical Practitioners in South-West England, 1660–1780

2004 ◽  
Vol 48 (1) ◽  
pp. 49-68 ◽  
Author(s):  
Ian Mortimer
Keyword(s):  
Early Modern ◽  
Specific Context ◽  
Medical Practitioners ◽  
Medical Expertise ◽  
North West ◽  
The North ◽  
Decentralized Trade ◽  
South West ◽  
The Many ◽  
South West England

The licensing of provincial surgeons and physicians in the post-Restoration period has proved an awkward subject for medical historians. It has divided writers between those who regard the possession of a local licence as a mark of professionalism or proficiency, those who see the existence of diocesan licences as a mark of an essentially unregulated and decentralized trade, and those who discount the distinction of licensing in assessing medical expertise availability in a given region. Such a diversity of interpretations has meant that the very descriptors by which practitioners were known to their contemporaries (and are referred to by historians) have become fragmented and difficult to use without a specific context. As David Harley has pointed out in his study of licensed physicians in the north-west of England, “historians often define eighteenth-century physicians as men with medical degrees, thus ignoring … the many licensed physicians throughout the country”. One could similarly draw attention to the inadequacy of the word “surgeon” to cover licensed and unlicensed practitioners, barber-surgeons, Company members in towns, self-taught practitioners using surgical manuals, and procedural specialists whose work came under the umbrella of surgery, such as bonesetters, midwives and phlebotomists. Although such fragmentation of meaning reflects a diversity of practices carried on under the same occupational descriptors in early modern England, the result is an imprecise historical literature in which the importance of licensing, and especially local licensing, is either ignored as a delimiter or viewed as an inaccurate gauge of medical proficiency.

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