Fluid Inclusions Usage for Assessing Oil Migration in Duhok, North Iraq

Awadh, Salih Muhammad; Al-Ameri, Thamer K.; Jassim, Sahar Y.; Bayraktutan, M. Salih

doi:10.4236/pos.2010.11005

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…Oils in this family were attributed to mixed Middle Jurassic Sargelu and Lower Cretaceous Garau Formation source rocks based on their similarity to the oils in sub-family 2-2. Fluid inclusion studies in northern Iraq identified two phases of hydrocarbon generation and migration, which is consistent with a mixed origin scenario (Awdah et al, 2010). Sulphur isotope data in samples from this area (Kendall et al, 2014) limit the source rock age to pre-Cenozoic.…”

Section: Zagros Foldbeltsupporting

confidence: 71%

Petroleum Systems Analysis of the Eastern Arabian Plate: Chemometrics Based on a Review of the Geochemical Characteristics of Oils in Jurassic – Cenozoic Reservoirs

Baniasad

Littke

Abeed

2022

Journal of Petroleum Geology

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This paper presents the results of an integrated geochemical study of oils in Jurassic – Cenozoic reservoirs in the eastern region of the Arabian Plate. The main objective was to analyze the active petroleum systems at a regional scale across the study area which extends from NE Iraq to SE Oman and includes the entire Persian Gulf. The dataset for the study consisted of more than 500 crude oil samples from 112 oil fields and 11 different reservoir units. This dataset was compiled from both the literature and re‐evaluated geochemical and stable isotope analyses, augmented by new analytical studies. The study documents regional variations and trends in the bulk and molecular properties and stable isotope ratios of the oil samples. Two overall clans and twelve genetic oil families and sub‐families were distinguished using multivariate statistical analysis (chemometrics) based on biomarker parameters. The age, lithology, depositional setting and organic matter type of the respective source rocks for each family/sub‐family was inferred from oil geochemical fingerprints. The results provide insights into the key geological factors that control the number, size and geochemical character of oil fields in the eastern Arabian Plate. The geographical extent of the various oil families was assessed and used to evaluate charge access and to predict migration directions and migration pathways in the study area. The results indicate the value of implementing multivariate statistical analysis on “big data” along with state‐of‐the‐art geological petroleum systems analysis and interpretation of biomarker and oil composition data to investigate complex and extended petroleum systems.

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Section: Zagros Foldbeltsupporting

confidence: 71%

Petroleum Systems Analysis of the Eastern Arabian Plate: Chemometrics Based on a Review of the Geochemical Characteristics of Oils in Jurassic – Cenozoic Reservoirs

Baniasad

Littke

Abeed

2022

Journal of Petroleum Geology

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“…The movement could be horizontal, inclined or vertical (API, 1996). The non-cemented fault planes are weak paths that could be suit or conduit for oil, gas and liquid migration (Awadh et al, 2010).…”

Section: Geochemistrymentioning

confidence: 99%

Neotectonic Evidences in Guwair-Humaira Area SE Mosul-Iraq

Al-Naqib¹,

Al-Daghstani²,

Al-Taie³

2018

INJES

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Neotectonic evidences were detected along Kirkuk-Najd-fault system that passes towards N45W along Guwair anticline, Humaira, Hawi Aslan, Zanquba and Mosul city through the Tigris River belt passing towards Iraqi-Syrian-Turkish borders. Ninivite persists through these localities. Two sets of slickensides forming two shear movements, restricting two acute angles 60 o and 32 o respectively, have their clear imprints on the newly formed Ninivite.Geochemical work concerning oxides distribution and element movements enrolled mainly by pH declinations through sample distribution assured the structural imprint of slickensides on a Ninivite rock on sample distribution covering unaltered and altered phases. Two main alteration events were picked up through samples 14 and 16 respectively. These events marked H 2 S and CH 4 gas seepages produced as a result of any newly detected seismic activities. The analysis of stress refers to the N45W i.e. rejuvenation of Kirkuk-Najd fault system. During alteration, SiO 2 enriched, while CaO, CO 2 , SO 3 , L.O.I, P 2 O 5 , were depleted and Al 2 O 3 and Fe 2 O 3 were migrated and eventually concentrated in the outer zones to form Alunite and Jarosite respectively.The same behavior applied to the trace elements, many of them were redistributed and concentrated after alteration like; Ni, Co, Zn, Ce, Y, and Li. Other trace elements are depleted like; Cr, Ag, Pb, and Cu.

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“…According to Shi et al (2010), the vertical movement and seepage of hydrocarbon oil and gas within zones of lineament along fractures and faults is called Chimney effect. Awadh et al (2010) quoted that oil and gas which escape from the earth's impermeable reservoir, seep and remain hidden in the subsurface or migrate through zones of lineaments and weak geological planes to form seepages. Okieimen and Okieimen (2005) stated that hydrocarbon that seeps on the earth's surface or near surface often produce changes associated with the soil chemistry.…”

Section: Introductionmentioning

confidence: 99%

Automatic Lineaments Mapping and Extraction in Relationship to Natural Hydrocarbon Seepage in Ugwueme, South-Eastern Nigeria

Enoh

Okeke

2021

Geodesy and Cartography

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The study focus on the integration of Remote Sensing and Geographic Information System for identification and delineation of lineaments in relation to natural hydrocarbon seepage, which occur in Ugwueme, South-Eastern Nigeria. To achieve this objective, remotely sensed data (ASTER Digital Elevation Model and Landsat 8 OLI/TIRS) were used to depict the surface expression of faults, folds and fractures which are expressed in the form of lineaments. The global positioning system (GPS) was also used for ground verification. The geology map of the study area, which is elucidated in the geology of Nigeria was used to show the distribution of rocks and other geologic structures. The delineation of lineament features was done automatically with the PCI Geomatica while the Rock ware was used to generate the Rose diagram for demonstration of the direction of the extracted lineaments. The classification of the lineaments density and the lineaments intersection analysis were categorized as very low, low, moderate, high and very high classes respectively. Areas classified as very high to high lineaments density are potential zone, which act as conduits for hydrocarbon seepage. The result shows that a total lineament frequency of 947 km and a total lineament length of 946 km were delineated from the satellite data. The result further shows that areas with high lineaments density are concentrated in the southwest, south, central and northern part of the study area while areas with low lineament density were found within the eastern part of Ugwueme. The Rose diagram highlight the major trend in the (NE-SW), (N-S) and (NW-SE) directions, and the minor trend in the (W-E) direction. These directional trends depict the directions of lineaments which act as conduits zones for hydrocarbon seepage in the region. The overall findings of the study shows that lineament density, lineament intersection and rose diagrams are concepts applicable in hydrocarbon oil and gas seepages.

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Fluid Inclusions Usage for Assessing Oil Migration in Duhok, North Iraq

Cited by 7 publications

References 4 publications

Petroleum Systems Analysis of the Eastern Arabian Plate: Chemometrics Based on a Review of the Geochemical Characteristics of Oils in Jurassic – Cenozoic Reservoirs

Petroleum Systems Analysis of the Eastern Arabian Plate: Chemometrics Based on a Review of the Geochemical Characteristics of Oils in Jurassic – Cenozoic Reservoirs

Neotectonic Evidences in Guwair-Humaira Area SE Mosul-Iraq

Automatic Lineaments Mapping and Extraction in Relationship to Natural Hydrocarbon Seepage in Ugwueme, South-Eastern Nigeria

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