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.

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.

Abstract 2276: Genetic classification of colorectal cancer

2021 ◽  
Author(s):  
Yoshikage Inoue ◽  
Nobuyuki Kakiuchi ◽  
Kenichi Yoshida ◽  
Yasuhito Nanya ◽  
Yusuke Shiozawa ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Genetic Classification

scholarly journals In-vitro Antioxidant Capacities and Genetic Classification of Indonesian Selected Pigmented Rice

2021 ◽  
pp. 107
Author(s):  
Keyword(s):  
Simple Sequence Repeat ◽  
Ssr Marker ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Genetic Classification ◽  
Pigmented Rice ◽  
The Relationship ◽  
Simple Sequence

Rice is a world-famous cereal food divided into pigmented and non-pigmented rice. Pigmented rice is popular as healthier food than non-pigmented rice due to its potency as an antioxidant. Nevertheless, the potential of pigmented rice has not been widely studied. Indonesian selected pigmented rice protein’s antioxidant potential and the non-protein compound were in-vitro studied. The antioxidant potencies were evaluated by extracting fresh seeds of nine pigmented rice (Aek Sibundong, Beureum Taleus, Gogo Niti-2, Lamongan-1, Merah SP, Merah Wangi, Mota, Ketan Hitam-2, and Super Manggis) and non-pigmented rice (IR-64) as control. Various free radical scavenging methods to determine the antioxidant activity (ABTS•+, DPPH•, OH• and O2-) were conducted. Meanwhile, the genetic classification was performed by a simple sequence repeat (SSR) marker to determine the relationship between varieties. The results showed that protein of Ketan Hitam-2 had the highest ABTS•+ radical scavenging (98.06%), followed by Beureum Taleus (42.54%). Ketan Hitam-2 protein also showed the highest OH• and O2- activities (43.49% and 6.02%, respectively). The highest DPPH• potency of the non-protein compounds also shown by Ketan Hitam-2 (32.23%) with the activity of OH• and O2- (20.63% and 14.56%, respectively). These results showed that Ketan Hitam-2 has the highest potency as an antioxidant, which could be recommended as a nutraceuticals compound.

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