Optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the Majnoon Field, Iraq
Abstract Several mechanisms were postulated to reduce drilling problems, improve hole cleaning characteristics, and keep the bit in good condition for the second usage. This study was conducted on Majnoon Field in southeastern Iraq to optimize the bit and drilling parameters. The results indicated t...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-87484-9 |
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| author | Ahmed N. Al-Dujaili Maaly S. Asad Najah Saeed Nurbol Tileuberdi |
| author_facet | Ahmed N. Al-Dujaili Maaly S. Asad Najah Saeed Nurbol Tileuberdi |
| author_sort | Ahmed N. Al-Dujaili |
| collection | DOAJ |
| description | Abstract Several mechanisms were postulated to reduce drilling problems, improve hole cleaning characteristics, and keep the bit in good condition for the second usage. This study was conducted on Majnoon Field in southeastern Iraq to optimize the bit and drilling parameters. The results indicated that the 16” SFD75D bit proved the preferred bit for both vertical and deviated wells due to its directional capabilities. MMD and MME were the best bit types for 12.25” and 8.5” sections and proved more successful than the FX and EQ types. The maximum weight on bit (WOB), Round per Minute (RPM), mud weight, and flow rate must be 25.45–73 klbs, 50-179.22, 10.5–10.8 ppg, and 662–940 gpm respectively, according to the drilling section. The wells with the J-shape showed a better penetration rate (increased 50–100%) and steadier torque than those with the S-shape for all drilling sections, with some deviations in the Shiranish, Sadi, and Tanuma Formations. The wells in the south have a sliding percentage of drilling hours more than in the north of the Field, and the inclination of the wells in the south was generally more stable and had lower hydraulics requirements than in the north of the Field. |
| format | Article |
| id | doaj-art-052eb8a96ef34f26a279537e9000a9b5 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| spelling | doaj-art-052eb8a96ef34f26a279537e9000a9b52025-01-26T12:27:30ZengNature PortfolioScientific Reports2045-23222025-01-0115112210.1038/s41598-025-87484-9Optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the Majnoon Field, IraqAhmed N. Al-Dujaili0Maaly S. Asad1Najah Saeed2Nurbol Tileuberdi3Petroleum Engineering Department, Amirkabir University of TechnologyCollege of Engineering/ Petroleum Engineering Department, Kerbala UniversityCollege of Oil and Gas Engineering, Basrah University for Oil and GasLaboratory of Engineering Profile, Satbayev UniversityAbstract Several mechanisms were postulated to reduce drilling problems, improve hole cleaning characteristics, and keep the bit in good condition for the second usage. This study was conducted on Majnoon Field in southeastern Iraq to optimize the bit and drilling parameters. The results indicated that the 16” SFD75D bit proved the preferred bit for both vertical and deviated wells due to its directional capabilities. MMD and MME were the best bit types for 12.25” and 8.5” sections and proved more successful than the FX and EQ types. The maximum weight on bit (WOB), Round per Minute (RPM), mud weight, and flow rate must be 25.45–73 klbs, 50-179.22, 10.5–10.8 ppg, and 662–940 gpm respectively, according to the drilling section. The wells with the J-shape showed a better penetration rate (increased 50–100%) and steadier torque than those with the S-shape for all drilling sections, with some deviations in the Shiranish, Sadi, and Tanuma Formations. The wells in the south have a sliding percentage of drilling hours more than in the north of the Field, and the inclination of the wells in the south was generally more stable and had lower hydraulics requirements than in the north of the Field.https://doi.org/10.1038/s41598-025-87484-9Majnoon FieldDeviated wellsPDC bit optimizationDrilling parametersHydraulic sensitivity |
| spellingShingle | Ahmed N. Al-Dujaili Maaly S. Asad Najah Saeed Nurbol Tileuberdi Optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the Majnoon Field, Iraq Scientific Reports Majnoon Field Deviated wells PDC bit optimization Drilling parameters Hydraulic sensitivity |
| title | Optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the Majnoon Field, Iraq |
| title_full | Optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the Majnoon Field, Iraq |
| title_fullStr | Optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the Majnoon Field, Iraq |
| title_full_unstemmed | Optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the Majnoon Field, Iraq |
| title_short | Optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the Majnoon Field, Iraq |
| title_sort | optimizing polycrystalline diamond compact bit selection and drilling parameters for deviated wells in the majnoon field iraq |
| topic | Majnoon Field Deviated wells PDC bit optimization Drilling parameters Hydraulic sensitivity |
| url | https://doi.org/10.1038/s41598-025-87484-9 |
| work_keys_str_mv | AT ahmednaldujaili optimizingpolycrystallinediamondcompactbitselectionanddrillingparametersfordeviatedwellsinthemajnoonfieldiraq AT maalysasad optimizingpolycrystallinediamondcompactbitselectionanddrillingparametersfordeviatedwellsinthemajnoonfieldiraq AT najahsaeed optimizingpolycrystallinediamondcompactbitselectionanddrillingparametersfordeviatedwellsinthemajnoonfieldiraq AT nurboltileuberdi optimizingpolycrystallinediamondcompactbitselectionanddrillingparametersfordeviatedwellsinthemajnoonfieldiraq |