Source rock potential of the Early Cretaceous intervals in the Darquain field, Abadan Plain, Zagros Basin, SW Iran

Zeinalzadeh, Arsalan; Moussavi‐Harami, Reza; Mahboubi, Asadollah; Sajjadian, Vali Ahmad

doi:10.1007/s12303-017-0075-8

Cited by 4 publications

(1 citation statement)

References 31 publications

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“…The Kazhdumi Formation is a fractured-vuggy carbonate formation (Vincent et al., 2015; Zeinalzadeh et al., 2018). As a result of the existence of the fractures and vuggy, the leakage pressure is close to the formation pressure, and material and pressure balance between the wellbore fluid and the formation fluid is difficult to maintain.…”

Section: Introductionmentioning

confidence: 99%

Liquid–liquid gravity displacement in a vertical fracture during drilling: Experimental study and mathematical model

Xiao

Meng

Zhang

et al. 2019

Energy Exploration & Exploitation

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Gravity displacement often occurs when drilling a vertical fractured formation, causing a downhole complexity with risk of blowout and reservoir damage, well control difficulty, drilling cycle prolongation, and increased costs. Based on an experimental device created for simulating the gravity displacement, various factors affecting the displacement quantity were quantitatively evaluated by simulating the fracture width, asphalt viscosity, drilling fluid density, and viscosity under different working conditions, and a liquid–liquid displacement law was obtained. Using the theories of rock mechanics, fluid mechanics, and seepage mechanics, based on conformal mapping, as well as a fracture-pore double substrate fluid flow model, we established a steady-state mathematical model of fractured formation liquid–liquid gravity displacement by optimizing the shape factors and using a combination of gravity displacement experiments to verify the feasibility of the mathematical model. We analyzed the influence of drilling fluid density, fracture height and length, and asphalt viscosity on displacement rate, and obtained the corresponding laws. The results show that when the oil–fluid interface is stable, the fracture width is the most important factor affecting the gravity displacement, and plugging is the most effective means of managing gravity displacement.

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Section: Introductionmentioning

confidence: 99%

Liquid–liquid gravity displacement in a vertical fracture during drilling: Experimental study and mathematical model

Xiao

Meng

Zhang

et al. 2019

Energy Exploration & Exploitation

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Source identification of n-alkanes and isoprenoids using diagnostic ratios and carbon isotopic composition on crude oils and surface waters from the Gulf of Mexico

Hernández-Guzmán

Macías-Zamora

Ramírez-Álvarez

et al. 2021

Environ Monit Assess

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Garau Formation as an unconventional hydrocarbon resource in southwestern Iran: a geochemical investigation

Hosseiny

Mohseni

2023

J Petrol Explor Prod Technol

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Due to the growing need for hydrocarbons and the limited conventional resources, paying attention to unconventional oil and gas resources is essential. The upper Jurassic-Lower Cretaceous in western and southwestern Iran contains the most crucial source rocks of the Zagros sedimentary basin. One of the richest source rocks is the shaly Garau Formation. Owing to geochemical and geological characteristics, the Garau Formation, with Neocomian to Coniacian age and periodicity of radiolore black limestones with black pyrite bituminous shales, ammonite, and chertite shale, is the suitable potential sweet spot as oil shale and gas shale. In this study, a comprehensive regional study was conducted on the entire Garau Formation basin using Rock–Eval parameters and organic matter maturity data. In addition to investigating the hydrocarbon generation potential of the Garau Formation as a source rock, the prospect of this Formation as oil and gas shales in the entire Garau basin was investigated. For this purpose, 31 fields in 5 important sub-basins of Zagros, including East Lorestan, West Lorestan, Izeh zone, Dezful Embayment, and Abadan plain were investigated. The study showed that total organic carbon varies between 0.17 and 24.6, and more than 75% of total organic carbon had values greater than 1. By examining the quantity, quality, and maturity parameters and considering the necessary thresholds, it was found that East Lorestan and West Lorestan have the conditions for oil and gas shales. The highest quantity and best quality of organic matter are related to Eastern Lorestan. By moving west and south of Garau Basin, the quantity and quality of organic matter decrease, and the hydrogen index proves the results. Vitrinite reflection studies indicated that the lowest and highest levels of organic matter maturity belong to East Lorestan and West Lorestan, respectively. Therefore, the northeast of Garau Basin (Eastern Lorestan) has the potential for oil shale, and the northwest of the Basin (Western Lorestan) has the potential for gas shale.

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Source rock potential of the Early Cretaceous intervals in the Darquain field, Abadan Plain, Zagros Basin, SW Iran

Cited by 4 publications

References 31 publications

Liquid–liquid gravity displacement in a vertical fracture during drilling: Experimental study and mathematical model

Liquid–liquid gravity displacement in a vertical fracture during drilling: Experimental study and mathematical model

Source identification of n-alkanes and isoprenoids using diagnostic ratios and carbon isotopic composition on crude oils and surface waters from the Gulf of Mexico

Garau Formation as an unconventional hydrocarbon resource in southwestern Iran: a geochemical investigation

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