scholarly journals Regional distribution and °API gravity of oil inclusions from Upper Ordovician Yeoman Formation, southeast Saskatchewan: evaluation of potential hydrocarbon migration pathways

2000 ◽  
Author(s):  
L D Stasiuk ◽  
G Addison
Keyword(s):  
Regional Distribution ◽  
Upper Ordovician ◽  
Hydrocarbon Migration ◽  
Migration Pathways

scholarly journals Hydrocarbon migration pathways in the Neogene of Laixi structural belt, southern Bohai Sea, China

2016 ◽  
Vol 43 (1) ◽  
pp. 36-44 ◽  
Author(s):  
Geng QIAN ◽  
Chengmin NIU ◽  
Bo YANG ◽  
Danfeng TU ◽  
Guoying LI ◽  
...  
Keyword(s):  
Bohai Sea ◽  
Hydrocarbon Migration ◽  
Migration Pathways

HYDROCARBON-RELATED DIAGENETIC ZONES (HRDZs) IN THE VULCAN SUB-BASIN, TIMOR SEA: RECOGNITION AND EXPLORATION IMPLICATIONS

1995 ◽  
Vol 35 (1) ◽  
pp. 220 ◽  
Author(s):  
G.W. O'Brien ◽  
E.P. Woods
Keyword(s):  
Late Miocene ◽  
Predictive Tool ◽  
Hydrocarbon Migration ◽  
Areal Distribution ◽  
Carbon Isotopic ◽  
Individual Structure ◽  
History Of ◽  
Timor Sea ◽  
Two Stages ◽  
Migration Pathways

Within very localised areas of the Vulcan Subbasin, the Eocene Grebe Formation sandstones are strongly cemented with carbonate. These cemented sands are recognisable on seismic data as zones of anomalously high velocity, and result in both time 'pull-up' and deterioration of the stack response in the underlying section.To determine the nature and origin of these cemented zones, their isotopic, mineralogical and petrologic compositions have been characterised, their seismic response and areal distribution established, and these observations integrated with ~2,730 km of AGSO water column geochemical ('sniffer-type') data.The carbon isotopic compositions of the carbonate within the cemented Grebe sands are diagnostic of carbonates formed principally via the oxidation of migrating, thermogenic hydrocarbons. Oxidation of the hydrocarbons took place in two stages: an earlier phase led to calcite precipitation, whereas a later phase produced (generally subsidiary) ferroan dolomite/ankerite cementation.Areas of known, present-day hydrocarbon seepage from the seafloor, such as over major faults on the Skua Horst and along the Vulcan Sub-basin/ Londonderry High boundary zone, are invariably associated with zones of highly cemented Eocene sands. Similarly, areas of known Tertiary hydrocarbon seepage, such as those associated with the residual oil columns on the Eider Horst, also contain strongly cemented Eocene sandstones.These observations have established a causal relationship between the presence of these Hydrocarbon-Related Diagenetic Zones (or HRDZs) in the Eocene sandstones and Tertiary-Quaternary hydrocarbon seepage. It is likely that most of the cementation occurred during the Late Miocene/Early Pliocene, when the Grebe Formation sands were at a shallow depth of burial(Recognition of this causal association has allowed several insights to be gained into the exploration potential and reactivation history of structures within the Vulcan Sub-basin. Mapping of the areal distribution of the cemented zones can effectively define hydrocarbon migration pathways. More importantly, however, predictable relationships exist between the seismic expression of the HRDZs, the total amount of hydrocarbons that have leaked from the traps, and the obliquity between the Jurassic and Late Miocene fault trends over the respective structures. A continuum exists between highintegrity accumulations, in which the fault trends are parallel and the HRDZs are small or absent, and breached accumulations, in which a significant obliquity exists between the respective fault trends and the HRDZs are large and seismically-intense.These observations provide a potential predictive tool for evaluating undrilled structures. It may be possible to determine, from the integration of seismic structural mapping and the characterisation of the seismic expression of the HRDZs, not only whether an individual structure is ever likely to have had a hydrocarbon column, but whether that column is likely to be preserved.

Accumulation Models of the Oil Pools of Block XXI of Tamsag Basin in Mongolia

2014 ◽  
Vol 962-965 ◽  
pp. 522-525
Author(s):  
Liang Zhao
Keyword(s):  
Water Distribution ◽  
Physical Property ◽  
Reverse Fault ◽  
The South ◽  
Hydrocarbon Migration ◽  
The North ◽  
Oil Water ◽  
Migration Pathways

This document explains different tectonic styles and sedimentary fillings give rise to the different accumulation combinations and accumulation models between the south and the north frogs of East Subsag of South Buir Sag. The Tsagaantsav Formation oil pools, subject to the rupture of the fault-period tectonic layers, has developed multiple types of traps including reverse fault blocks, fault noses and drag anticlines. They are close to the oil-generating sags, in the indicator areas of hydrocarbon migration where hydrocarbon pools, particularly tectonic-controlled pools, are easily formed. The lithology and physical property play an important controlling role over the formation of oil pools with complicated oil-water distribution relationship. The constant and the late active ruptures as longitudinal hydrocarbon migration pathways, together with the sedimentary sands of multiple genesis types, have given shape to the multi-formation lithologic, lithologic-tectonic or tectonic accumulation combinations.

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.

Visualizing Hydrocarbon Migration Pathways Associated with the Ringhorne Oil Field, Norway: An Integrated Approach

2021 ◽  
pp. 1-57
Author(s):  
David Connolly ◽  
Kristoffer Rimaila ◽  
Assia Lakhlifi ◽  
Gabor Kocsis ◽  
Ingrid Fæstø ◽  
...  
Keyword(s):  
Neural Network ◽  
Integrated Approach ◽  
Upper Jurassic ◽  
Oil Field ◽  
Hydrocarbon Migration ◽  
Gas Chimney ◽  
Hydrocarbon Charge ◽  
Geochemical Studies ◽  
Elastic Inversion ◽  
Migration Pathways

Norway’s Ringhorne Field is a faulted anticline which produces oil from Triassic (Statfjord) and Paleocene (Hermod) sands. It is located on the Utsira High. Geochemical studies of the produced oil indicate the oil is generated from mature Upper Jurassic marine shales in the adjacent Viking Graben. However, it has not been clear how oil migrated into the Triassic reservoirs and charged the overlying Paleocene reservoirs. Gas chimney detection using a proven neural network technique was used to detect the vertical hydrocarbon migration pathways on normally processed seismic data. The processing results were then validated using a set of criteria to determine if they represented true hydrocarbon migration rather than seismic artifacts. The chimney processing results using this traditional (shallow) neural network was compared with convolutional neural network (deep learning) results and geo-mechanical modeling on key lines. Key reservoirs were delineated using a stochastic (elastic) inversion approach. Reliable chimneys were then visualized in the vicinity of the producing reservoirs. The results showed pathways by which the Triassic fluvial sands received charge, and how these reservoirs had flank leakage to provide charge to shallower Paleocene reservoirs. This approach has now been used over hundreds of fields and dry holes in the Norwegian North Sea and worldwide as analogs to assess hydrocarbon charge and top seal risk predrill.

Types of Hydrocarbon Migration Pathways and Hydrocarbon Accumulation in the Yakela Fault-Convex, Tarim Basin

2013 ◽  
Vol 295-298 ◽  
pp. 2749-2752
Author(s):  
Xiao Long Luo ◽  
Liang Jie Tang
Keyword(s):  
Tarim Basin ◽  
Hydrocarbon Accumulation ◽  
Lateral Migration ◽  
Long Distance ◽  
Hydrocarbon Migration ◽  
Migration Pathway ◽  
Fault Type ◽  
Migration Pathways ◽  
3D Seismic Data ◽  
Field Geology

The existence of abundant hydrocarbon has been discovered in the Yakela Fault-convex, Tarim Basin, after reconstructing and superimposing for several periods. Through interpretation of 3D seismic data up to date, combined with the circumferential field geology, after comprehensively analyzing the characteristics of development on hydrocarbon migration passages and its relationship with hydrocarbon accumulation, this paper holds that it is divided into fault type, unconformity type and carrier bed type in the Yakela fault-convex. The unconformities and the carrier beds are the main lateral migration passage of gas and oil for long distance. The faults are the main vertical migration pathway of hydrocarbon, and the hydrocarbon can arrive at any strata with fault. It is significant to know the hydrocarbon migration pathways in the study area for exploration in future.

Sign in / Sign up

Export Citation Format

Share Document