Thermo-poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the Mansouri oilfield, SW Iran
Ensuring wellbore stability is essential for successful oilfield drilling operations, as instability can prolong drilling time and escalate costs, potentially resulting in halted operations and loss of wells. This study presents a comprehensive thermo-poroelastic analysis of wellbore stability, focu...
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| Language: | English |
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Elsevier
2025-12-01
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| Series: | Results in Earth Sciences |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211714825000032 |
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| author | Alireza Pirhadi Pooria Kianoush Shahab Varkouhi Reza Shirinabadi Adel Shirazy Aref Shirazi Arash Ebrahimabadi |
| author_facet | Alireza Pirhadi Pooria Kianoush Shahab Varkouhi Reza Shirinabadi Adel Shirazy Aref Shirazi Arash Ebrahimabadi |
| author_sort | Alireza Pirhadi |
| collection | DOAJ |
| description | Ensuring wellbore stability is essential for successful oilfield drilling operations, as instability can prolong drilling time and escalate costs, potentially resulting in halted operations and loss of wells. This study presents a comprehensive thermo-poroelastic analysis of wellbore stability, focusing on the impact of thermal effects and pore pressure dynamics in shale formations. Utilizing a coupled thermo-poroelastic model, the research investigates the influence of varying drilling fluid pressure and temperature on wellbore stresses in the Bangestan Reservoir in SW Iran. The analysis employs Hoek-Brown's law, continuity equation, Darcy's law, compatibility equation, and thermal relations, solved using the finite element method within a complex geological model. The findings reveal that horizontal wells are more stable than other configurations, with a pressure limit of 57.23 MPa required to maintain stability. Additionally, a 55–60° azimuth demonstrates the highest mud limit among horizontal wells, while a 20° contrast is observed between formation temperature and drilling fluid in the optimal azimuth. This research introduces innovative methodologies that integrate thermal and pore pressure effects, significantly enhancing the understanding of wellbore stability and contributing to safer and more efficient drilling operations. |
| format | Article |
| id | doaj-art-fc219bd71ba347cdbff49d7f13afac00 |
| institution | Kabale University |
| issn | 2211-7148 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Earth Sciences |
| spelling | doaj-art-fc219bd71ba347cdbff49d7f13afac002025-01-28T04:14:35ZengElsevierResults in Earth Sciences2211-71482025-12-013100061Thermo-poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the Mansouri oilfield, SW IranAlireza Pirhadi0Pooria Kianoush1Shahab Varkouhi2Reza Shirinabadi3Adel Shirazy4Aref Shirazi5Arash Ebrahimabadi6Department of Petroleum Engineering, Amirkabir University of Technology, Tehran, IranDepartment of Petroleum and Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran; National Iranian Oil Company, Exploration Directorate (NIOC-EXP), Tehran, Iran; Correspondence to: Islamic Azad University, South Tehran Branch, Corner of Kausar Blvd., Deh Haghi (Ahang) St., Southern Nabard Blvd., Pirouzi St., Tehran, Iran, Tehran 1777613651, Iran.Department of Earth Sciences, University College London, London WC1E 6BT, UKDepartment of Petroleum and Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran, IranDepartment of Mining Engineering, Amirkabir University of Technology, Tehran, IranDepartment of Mining Engineering, Amirkabir University of Technology, Tehran, IranDepartment of Petroleum, Mining and Materials Engineering, Central Tehran Branch, Islamic Azad University, Tehran, IranEnsuring wellbore stability is essential for successful oilfield drilling operations, as instability can prolong drilling time and escalate costs, potentially resulting in halted operations and loss of wells. This study presents a comprehensive thermo-poroelastic analysis of wellbore stability, focusing on the impact of thermal effects and pore pressure dynamics in shale formations. Utilizing a coupled thermo-poroelastic model, the research investigates the influence of varying drilling fluid pressure and temperature on wellbore stresses in the Bangestan Reservoir in SW Iran. The analysis employs Hoek-Brown's law, continuity equation, Darcy's law, compatibility equation, and thermal relations, solved using the finite element method within a complex geological model. The findings reveal that horizontal wells are more stable than other configurations, with a pressure limit of 57.23 MPa required to maintain stability. Additionally, a 55–60° azimuth demonstrates the highest mud limit among horizontal wells, while a 20° contrast is observed between formation temperature and drilling fluid in the optimal azimuth. This research introduces innovative methodologies that integrate thermal and pore pressure effects, significantly enhancing the understanding of wellbore stability and contributing to safer and more efficient drilling operations.http://www.sciencedirect.com/science/article/pii/S2211714825000032Drilling fluidthermo-poroelastic analysisfinite element methodwellbore stresspressure zoneshear failure |
| spellingShingle | Alireza Pirhadi Pooria Kianoush Shahab Varkouhi Reza Shirinabadi Adel Shirazy Aref Shirazi Arash Ebrahimabadi Thermo-poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the Mansouri oilfield, SW Iran Results in Earth Sciences Drilling fluid thermo-poroelastic analysis finite element method wellbore stress pressure zone shear failure |
| title | Thermo-poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the Mansouri oilfield, SW Iran |
| title_full | Thermo-poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the Mansouri oilfield, SW Iran |
| title_fullStr | Thermo-poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the Mansouri oilfield, SW Iran |
| title_full_unstemmed | Thermo-poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the Mansouri oilfield, SW Iran |
| title_short | Thermo-poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the Mansouri oilfield, SW Iran |
| title_sort | thermo poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the mansouri oilfield sw iran |
| topic | Drilling fluid thermo-poroelastic analysis finite element method wellbore stress pressure zone shear failure |
| url | http://www.sciencedirect.com/science/article/pii/S2211714825000032 |
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