Výsledky vyhledávání - "Jafar, Qajar"

Akademický článek

Impact of nanopore confinement on phase behavior and enriched gas minimum miscibility pressure in asphaltenic tight oil reservoirs

Autor: Fatemeh Keyvani, Ali Safaei, Yousef Kazemzadeh, Masoud Riazi, Jafar Qajar

Publikováno v: Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)

Abstract Miscible gas injection in tight/shale oil reservoirs presents a complex problem due to various factors, including the presence of a large number of nanopores in the rock structure and asphaltene and heavy components in crude oil. This method

Externí odkaz: https://doaj.org/article/667de08f8e6b4ffc9d99eed69ed586c9

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Akademický článek

Comparison of machine learning and statistical approaches to estimate rock tensile strength

Autor: Zhichun Fang, Jia Cheng, Chao Xu, Xinyu Xu, Jafar Qajar, Ahmad Rastegarnia

Publikováno v: Case Studies in Construction Materials, Vol 20, Iss , Pp e02890- (2024)

Tensile strength is very important in drilling operations. The main objective of this study was to assess petrography, physical, and mechanical properties and predict the Brazilian tensile strength of sedimentary rocks by leveraging key parameters su

Externí odkaz: https://doaj.org/article/413688b3ce2946ccbe2ec455b3f3d83d

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Akademický článek

An approach for optimization of controllable drilling parameters for motorized bottom hole assembly in a specific formation

Autor: Hossein Yavari, Mohammad Fazaelizadeh, Bernt Sigve Aadnoy, Rasool Khosravanian, Jafar Qajar, Mostafa Sedaghatzadeh, Masoud Riazi

Publikováno v: Results in Engineering, Vol 20, Iss , Pp 101548- (2023)

This study focuses on optimizing drilling parameters when using Positive Displacement Motors (PDMs). In drilling operations involving mud motors, weight-on-bit (WOB) alterations lead to variations in the system's parasitic pressure drop. Consequently

Externí odkaz: https://doaj.org/article/0a3e4e515abc487eb8c7c89478465459

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Akademický článek

Characterization of a heterogeneous carbonate reservoir by integrating electrofacies and hydraulic flow units: a case study of Kangan gas field, Zagros basin

Autor: Amir Karimian Torghabeh, Jafar Qajar, Ali Dehghan Abnavi

Publikováno v: Journal of Petroleum Exploration and Production Technology, Vol 13, Iss 2, Pp 645-660 (2022)

Abstract Reservoir characterization is one of the key stages in oil and gas exploration, appraisal, development, and optimal production. During the exploration phase, core analysis and well logging are basic information obtained after the pay zone id

Externí odkaz: https://doaj.org/article/f298cac3b7d34746b6dbe3676c3bcc22

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Akademický článek

Application of Non-Destructive Test Results to Estimate Rock Mechanical Characteristics—A Case Study

Autor: Zhichun Fang, Jafar Qajar, Kosar Safari, Saeedeh Hosseini, Mohammad Khajehzadeh, Moncef L. Nehdi

Publikováno v: Minerals, Vol 13, Iss 4, p 472 (2023)

Accurately determining rock elastic modulus (EM) and uniaxial compressive strength (UCS) using laboratory methods requires considerable time and cost. Hence, the development of models for estimating the mechanical properties of rock is a very attract

Externí odkaz: https://doaj.org/article/2edee47e0f074dc8a3b6775ee2c03d2a

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To Express Required CT-Scan Resolution for Porosity and Saturation Calculations in Terms of Average Grain Sizes

Autor: Ahmed Zoeir, Jafar Qajar

Publikováno v: Journal of Petroleum Science and Technology, Vol 8, Iss 3, Pp 30-41 (2018)

Despite advancements in specifying 3D internal microstructure of reservoir rocks, identifying some sensitive phenomenons are still problematic particularly due to image resolution limitation. Discretization study on such CT-scan data always has encou

Externí odkaz: https://doaj.org/article/f7b8cd44539344bbbee17924f29f90db

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Akademický článek

A comparison of methods for denoising of well test pressure data

Autor: Seyedeh Robab Moosavi, Jafar Qajar, Masoud Riazi

Publikováno v: Journal of Petroleum Exploration and Production Technology, Vol 8, Iss 4, Pp 1519-1534 (2018)

Abstract Pressure transient data from downhole gauges are one of the key parameters in characterizing reservoir properties and forecasting future reservoir performance. Reservoir pressure is usually measured under dynamic changes. The collected data

Externí odkaz: https://doaj.org/article/e6075c0b40064a98b0cb6c25eb22c74e

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