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All Journal Scientific Contributions Oil and Gas
Mohd Azahari Bin Razali
Universiti Tun Hussein Onn Malaysia
Chemical Engineering, Chemistry & Bioengineering Energy

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Influence of Installation Orientation and Cone Angle on Pressure Drop and Filtration Efficiency of Conical Strainers Amnur Akhyan; Mhd Dhowiy Hussein; Mohd Azahari Bin Razali
Scientific Contributions Oil and Gas Vol 48 No 3 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i3.1910

Abstract

Cone strainers are very important in oil and gas pipeline systems because they prevent particles from entering the system and damaging pumps, compressors, and other critical equipment. This study experimentally examines the effects of cone angle, installation orientation, and open area ratio (OAR) on pressure drop (ΔP) and filtration efficiency (η) in conical filters. Four setups were examined with cone angles of 74° and 81° and hole diameters of 4 mm and 6 mm, at flow rates between 15 to 30 m³/hour. The results reveal that the 81° configuration (OAR = 38%) with unidirectional installation has the lowest pressure drop (1,250–2,500 Pa) and a filtration efficiency of over 92%, making it ideal for energy-efficient use. Conversely, the 74° cone can capture more particles (>93%) but experiences higher pressure loss (up to 9,500 Pa), making it suitable for applications requiring very stringent filtering. Installing the counter-current way was shown to increase turbulence and lower efficiency by up to 20%, which demonstrates the importance of the correct installation orientation for maintaining hydrodynamic stability and filtering effectiveness. These results highlight the critical need to optimise cone geometry and OAR to strike a balance between energy efficiency, hydraulic stability, and filtering performance. For pre-filtration and equipment protection in oil and gas systems, the optimal setup is an 81° angle, a 6 mm hole, a 38% OAR, and unidirectional flow. This configuration can contribute to smoother operations, energy savings, and reduced maintenance requirements.
Porosity-Controlled Flow Instability and Vibration Response in Conical Strainers: An Integrated Hydraulic-Structural Evaluation Amnur Akhyan; Mohd Azahari Bin Razali; Hendriko; Shahruddin Bin Mahzan; Iman Fitri Bin Ismail
Scientific Contributions Oil and Gas Vol 48 No 4 (2025)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/scog.v48i4.1960

Abstract

Research on how porosity can trigger vibrations due to flow-induced instability (FIV) partially clogged in perforated conical strainer has been conducted integrated experimental. Six conical filters with porosities between 25 and 40 percent, made in straight and staggered perforation patterns, were tested under clean and clogged conditions using a set of tools with a controlled closed-loop flow. Pressure drop, vibration amplitude, and frequency were measured simultaneously to capture the coupled hydraulic-structural response. The results show that the straight configuration with low porosity exhibits strong geometric constriction, which accelerates the formation of the jet flow, increases turbulence intensity, and strengthens the vibration amplitude as blockage increases. Conversely, strainers with a minimum porosity of 30 percent and staggered holes promote more uniform flow distribution, reduce shear layer instability, and result in a more stable frequency response. The effect of pressure drop on vibration confirms that clogged can lead to dynamic instability of the system, particularly in high-risk frequency bands common in piping facilities. These experimental results are highly relevant to oil and gas exploration and exploitation activities during drilling, well testing, and production operations. Where fluctuating flow rates, entrained solids, and increased clogging are unavoidable. These findings provide practical guidance for determining the porosity of conical strainers and the perforation layout to reduce hydraulic losses, mitigate vibration damage, and improve the operational reliability of piping systems in oil and gas facilities.
Co-Authors Amnur Akhyan Amnur Akhyan Hendriko Iman Fitri Bin Ismail Mhd Dhowiy Hussein Shahruddin Bin Mahzan