Failure analysis of a bottom hole motor attached to a coiled tubing
During well operations in Mexico, a weight loss incident occurred, accompanied by the detachment of a section of the Bottom Hole Motor (BHM) connected to coiled wellbore tubing. To investigate the cause of the BHM rupture, a comprehensive analysis was conducted, including chemical analysis, metallur...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Forces in Mechanics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666359723000859 |
| _version_ | 1797300394880139264 |
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| author | A. Albiter Lucila Cruz-Castro A. Contreras |
| author_facet | A. Albiter Lucila Cruz-Castro A. Contreras |
| author_sort | A. Albiter |
| collection | DOAJ |
| description | During well operations in Mexico, a weight loss incident occurred, accompanied by the detachment of a section of the Bottom Hole Motor (BHM) connected to coiled wellbore tubing. To investigate the cause of the BHM rupture, a comprehensive analysis was conducted, including chemical analysis, metallurgical examination, thickness measurements, hardness, tension, and impact tests, as well as Scanning Electron Microscopy (SEM) and Energy-Dispersive Spectroscopy (EDS). The results indicated brittle failure, potentially initiated by excessive torque, with evidence of plastic deformation and fatigue. The failure was attributed to weight forces overcoming well-related resistances, generating flexion stresses in the BHM body. Mechanical damages, including scratch marks, and localized deformation areas, indicated that the material is brittle, which is observed in the low elongation values (6 %) and energy impact exhibited. Microscopic analysis revealed predominantly brittle characteristics of the surface fracture. The failure of the BHM occur during attempts to unclog CT due to the material exhibiting low elongation and impact energy, suggesting that the material experienced deformation hardening, and fatigue before reaching failure. Additionally, scratches and excessive torque contributed to the material failing prematurely. |
| first_indexed | 2024-03-07T23:05:35Z |
| format | Article |
| id | doaj.art-e55344b0b7564010b7489a322af81aaa |
| institution | Directory Open Access Journal |
| issn | 2666-3597 |
| language | English |
| last_indexed | 2024-03-07T23:05:35Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Forces in Mechanics |
| spelling | doaj.art-e55344b0b7564010b7489a322af81aaa2024-02-22T04:53:28ZengElsevierForces in Mechanics2666-35972024-02-0114100250Failure analysis of a bottom hole motor attached to a coiled tubingA. Albiter0Lucila Cruz-Castro1A. Contreras2Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, San Bartolo Atepehuacan 07730, MexicoInstituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, San Bartolo Atepehuacan 07730, MexicoCorresponding author.; Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, San Bartolo Atepehuacan 07730, MexicoDuring well operations in Mexico, a weight loss incident occurred, accompanied by the detachment of a section of the Bottom Hole Motor (BHM) connected to coiled wellbore tubing. To investigate the cause of the BHM rupture, a comprehensive analysis was conducted, including chemical analysis, metallurgical examination, thickness measurements, hardness, tension, and impact tests, as well as Scanning Electron Microscopy (SEM) and Energy-Dispersive Spectroscopy (EDS). The results indicated brittle failure, potentially initiated by excessive torque, with evidence of plastic deformation and fatigue. The failure was attributed to weight forces overcoming well-related resistances, generating flexion stresses in the BHM body. Mechanical damages, including scratch marks, and localized deformation areas, indicated that the material is brittle, which is observed in the low elongation values (6 %) and energy impact exhibited. Microscopic analysis revealed predominantly brittle characteristics of the surface fracture. The failure of the BHM occur during attempts to unclog CT due to the material exhibiting low elongation and impact energy, suggesting that the material experienced deformation hardening, and fatigue before reaching failure. Additionally, scratches and excessive torque contributed to the material failing prematurely.http://www.sciencedirect.com/science/article/pii/S2666359723000859Bottom hole motor (BHM)brittle fracturefatiguefailure analysis and coiled tubing |
| spellingShingle | A. Albiter Lucila Cruz-Castro A. Contreras Failure analysis of a bottom hole motor attached to a coiled tubing Forces in Mechanics Bottom hole motor (BHM) brittle fracture fatigue failure analysis and coiled tubing |
| title | Failure analysis of a bottom hole motor attached to a coiled tubing |
| title_full | Failure analysis of a bottom hole motor attached to a coiled tubing |
| title_fullStr | Failure analysis of a bottom hole motor attached to a coiled tubing |
| title_full_unstemmed | Failure analysis of a bottom hole motor attached to a coiled tubing |
| title_short | Failure analysis of a bottom hole motor attached to a coiled tubing |
| title_sort | failure analysis of a bottom hole motor attached to a coiled tubing |
| topic | Bottom hole motor (BHM) brittle fracture fatigue failure analysis and coiled tubing |
| url | http://www.sciencedirect.com/science/article/pii/S2666359723000859 |
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