Publications by authors named "Mohammed Abdalla Ayoub"

Erosion of piping components, e.g., elbows, is a hazardous phenomenon that frequently occurs due to sand flow with fluids during petroleum production.

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Surfactant-based viscoelastic (SBVE) fluids have recently gained interest from many oil industry researchers due to their polymer-like viscoelastic behaviour and ability to mitigate problems of polymeric fluids by replacing them during various operations. This study investigates an alternative SBVE fluid system for hydraulic fracturing with comparable rheological characteristics to conventional polymeric guar gum fluid. In this study, low and high surfactant concentration SBVE fluid and nanofluid systems were synthesized, optimized, and compared.

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Surfactant-based viscoelastic (SBVE) fluids are innovative nonpolymeric non-newtonian fluid compositions that have recently gained much attention from the oil industry. SBVE can replace traditional polymeric fracturing fluid composition by mitigating problems arising during and after hydraulic fracturing operations are performed. In this study, SBVE fluid systems which are entangled with worm-like micellar solutions of cationic surfactant: cetrimonium bromide or CTAB and counterion inorganic sodium nitrate salt are synthesized.

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Article Synopsis
  • The study explores an improved method to predict bubble point pressure (Pb) using adaptive neuro-fuzzy inference system (ANFIS) and trend analysis, overcoming challenges faced by traditional pressure-volume-temperature (PVT) measurements.
  • The ANFIS model was developed with data from over 700 datasets and has shown superior performance compared to 21 existing models, achieving an impressive correlation coefficient (R) of 0.994.
  • Results indicate that the ANFIS model accurately represents the relationships between input and output parameters, demonstrating greater reliability and precision in predicting Pb than previously established models.
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Article Synopsis
  • - Bubble point pressure ( ) is crucial for petroleum production and reservoir characterization, but traditional measurement methods are expensive and time-consuming, leading researchers to explore alternatives like empirical correlations and machine learning.
  • - Previous methods have limitations in accuracy and often lack a clear understanding of the relationships between input features and target predictions, prompting the development of a new model using the Group Method of Data Handling (GMDH).
  • - The GMDH model, built from 760 datasets, demonstrates superior accuracy with low errors and a high correlation coefficient, indicating it effectively captures the physical behavior of the relationships among key parameters like gas solubility and reservoir temperature.
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The bubble point pressure ( ) is a crucial pressure-volume-temperature (PVT) property and a primary input needed for performing many petroleum engineering calculations, such as reservoir simulation. The industrial practice of determining is by direct measurement from PVT tests or prediction using empirical correlations. The main problems encountered with the published empirical correlations are their lack of accuracy and the noncomprehensive data set used to develop the model.

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Sand management is essential for enhancing the production in oil and gas reservoirs. The critical total drawdown (CTD) is used as a reliable indicator of the onset of sand production; hence, its accurate prediction is very important. There are many published CTD prediction correlations in literature.

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