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214 results on '"Murtaza, Mobeen"'

41. Role of high-density brines in reservoir development stages: A review.

Author

Raza, Arshad, Mahmoud, Mohamed, Alafnan, Saad, Arif, Muhammad, Ud Din Kirmani, Farzain, Kamal, Muhammad Shahzad, Murtaza, Mobeen, and Rana, Azeem

Subjects
GAS reservoirs, VISCOSITY, HYDRAULIC fracturing, INTERFACIAL tension, PETROLEUM engineering, SUSTAINABILITY
Abstract

High-density brines have been recognized beneficial for oilfield applications, with various key areas such as drilling, completion and formation evaluation. High-density brines can play a critical role in the development and production of oil and gas reservoirs during the primary, secondary, and tertiary recovery phases. High-density brines can enhance the mobility and recovery of the oil in the reservoir by controlling the density and viscosity. However, a less attention has been given to the application of highdensity brine in the area of reservoir development. This review is shedding light on a concise overview of reservoir development stages in association with the recovery mechanisms. In addition, most possible applications of high-density fluids have also been reviewed in the field of the reservoir development. In summary, this review state that high-density brines can be used to stimulate reservoirs by hydraulic fracturing during the primary recovery phase. However, the risk of increased interfacial tension, which relies on the density difference of two fluids, can trap more residual oil relative to conventional water flooding. In addition, high-density brines are effective in decreasing the mobility ratio and facilitating favorable displacement during polymer flooding. However, they can be least effective in alkaline flooding due to the high IFT related to large density differences. Thus, it is suggested to consider the utilization of sustainable high-density brines by taking into account effective factors in petroleum engineering aspects such as stimulation, secondary recovery and polymer flooding. [ABSTRACT FROM AUTHOR]

Published
2024
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44. An Efficient Single Step Approach for Barium Sulfate (BaSO4) Scale Removal at High Temperature.

Author

Murtaza, Mobeen, Rasm, Mohammed Yousef, Alarifi, Sulaiman A., Kamal, Muhammad Shahzad, Mahmoud, Mohamed, and Al-Ajmi, Mohammed

Subjects
BARIUM sulfate, ETHYLENEDIAMINETETRAACETIC acid, CHELATING agents, HIGH temperatures, GAS wells, OIL wells
Abstract

The barite scale (barium sulfate) is considered one of the most common scales in oil and gas wells. Barite scale removal is crucial for flow assurance but it still represents a challenge to the oil and gas industry because of its low solubility in water and mineral acids such as HCl. Despite the huge amounts of chelating agents required to remove the barite scale, the solubility of barite (BaSO4) in these chelates is very limited. In this experimental work, a new formulation to remove the barite scale is presented with a small volume of chelating agent used and a converting agent as the main feature of the dissolver. Dissolution of BaSO4 was conducted using tetrapotassium ethylene-diamine-tetra-acetic acid (K4-EDTA) chelating agent and then obtaining the dissolution rate at 200°F to mimic the wellbore condition. The concentration of the K4-EDTA was selected based on the optimum dissolution rate of BaSO4 at 24 h of soaking time. The variation of pH was investigated using potassium base KOH at two different pH values (10.5 and 13). Converting agent concentrations were obtained based on the high solubility of the scale to the total amount of solids. As the result of the study, it was revealed that a 15 wt% concentration of potassium base EDTA with 10 wt% K2CO3 as a converting agent at high pH was highly effective in dissolving up to 100% of 3 wt% BaSO4 in less than 6 h at temperatures of 200°F and 300°F. This new formulation has proven to be a reliable and efficient solution for removing BaSO4 from wellbores and surface equipment. [ABSTRACT FROM AUTHOR]

Published
2023
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