Prior assessment of CO2 leak rate through cracks sealed by nanoparticle gels
Abstract The leakage of hydrocarbon fluids through cracks in the annular cement and CO2 storage is a major concern to the Petroleum Industry. A significant risk is posed when repairing leakage in a micro annuli channel with smaller apertures. A low-viscosity sealant that can generate a long-lasting...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2023-03-01
|
| Series: | Journal of Petroleum Exploration and Production Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s13202-023-01626-1 |
| _version_ | 1797836633112838144 |
|---|---|
| author | Olatunji Olayiwola Vu Nguyen Ning Liu Boyun Guo |
| author_facet | Olatunji Olayiwola Vu Nguyen Ning Liu Boyun Guo |
| author_sort | Olatunji Olayiwola |
| collection | DOAJ |
| description | Abstract The leakage of hydrocarbon fluids through cracks in the annular cement and CO2 storage is a major concern to the Petroleum Industry. A significant risk is posed when repairing leakage in a micro annuli channel with smaller apertures. A low-viscosity sealant that can generate a long-lasting resilient seal is desired. The solution to sealing these channels might lie in a novel application using nano-silica Gel. In this study, laboratory tests were carried out to examine the capabilities of nano-silica gels to seal the cracks. Analyzing its rheological property, the gel strengths of nano-silica gels were found to increase with an increase in nano-silica concentration. Additionally, it was discovered that as the concentration of nano-silica increases, the sealing and leakage pressures, defined as the pressures before and after water breakthrough, respectively, increase as well. With a typical 15% concentration of nano silica in gel, a sealing pressure gradient of 80.2 psi/in and a leakage pressure gradient of 30 psi/in at a leaking rate of 1 cc/min were noted. To validate the validity of the experimental results, a mathematical model was developed to predict the leakage rate of sealed fractures. The model suggests that the young’s modulus of sealant is a key property of nano-sealants and further investigations are needed to validate the mathematical model for quantitative use. This study suggests a novel strategy for enhancing cement zonal isolation and reducing cement failure in oil and gas sector. |
| first_indexed | 2024-04-09T15:12:04Z |
| format | Article |
| id | doaj.art-a5e00dff08bf487ebdf191d49b1308ed |
| institution | Directory Open Access Journal |
| issn | 2190-0558 2190-0566 |
| language | English |
| last_indexed | 2024-04-09T15:12:04Z |
| publishDate | 2023-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Petroleum Exploration and Production Technology |
| spelling | doaj.art-a5e00dff08bf487ebdf191d49b1308ed2023-04-30T11:08:12ZengSpringerOpenJournal of Petroleum Exploration and Production Technology2190-05582190-05662023-03-011361509151710.1007/s13202-023-01626-1Prior assessment of CO2 leak rate through cracks sealed by nanoparticle gelsOlatunji Olayiwola0Vu Nguyen1Ning Liu2Boyun Guo3University of Louisiana at LafayetteUniversity of Louisiana at LafayetteUniversity of Louisiana at LafayetteUniversity of Louisiana at LafayetteAbstract The leakage of hydrocarbon fluids through cracks in the annular cement and CO2 storage is a major concern to the Petroleum Industry. A significant risk is posed when repairing leakage in a micro annuli channel with smaller apertures. A low-viscosity sealant that can generate a long-lasting resilient seal is desired. The solution to sealing these channels might lie in a novel application using nano-silica Gel. In this study, laboratory tests were carried out to examine the capabilities of nano-silica gels to seal the cracks. Analyzing its rheological property, the gel strengths of nano-silica gels were found to increase with an increase in nano-silica concentration. Additionally, it was discovered that as the concentration of nano-silica increases, the sealing and leakage pressures, defined as the pressures before and after water breakthrough, respectively, increase as well. With a typical 15% concentration of nano silica in gel, a sealing pressure gradient of 80.2 psi/in and a leakage pressure gradient of 30 psi/in at a leaking rate of 1 cc/min were noted. To validate the validity of the experimental results, a mathematical model was developed to predict the leakage rate of sealed fractures. The model suggests that the young’s modulus of sealant is a key property of nano-sealants and further investigations are needed to validate the mathematical model for quantitative use. This study suggests a novel strategy for enhancing cement zonal isolation and reducing cement failure in oil and gas sector.https://doi.org/10.1007/s13202-023-01626-1CO2-leakNano-particle gelSealantsTestModeling |
| spellingShingle | Olatunji Olayiwola Vu Nguyen Ning Liu Boyun Guo Prior assessment of CO2 leak rate through cracks sealed by nanoparticle gels Journal of Petroleum Exploration and Production Technology CO2-leak Nano-particle gel Sealants Test Modeling |
| title | Prior assessment of CO2 leak rate through cracks sealed by nanoparticle gels |
| title_full | Prior assessment of CO2 leak rate through cracks sealed by nanoparticle gels |
| title_fullStr | Prior assessment of CO2 leak rate through cracks sealed by nanoparticle gels |
| title_full_unstemmed | Prior assessment of CO2 leak rate through cracks sealed by nanoparticle gels |
| title_short | Prior assessment of CO2 leak rate through cracks sealed by nanoparticle gels |
| title_sort | prior assessment of co2 leak rate through cracks sealed by nanoparticle gels |
| topic | CO2-leak Nano-particle gel Sealants Test Modeling |
| url | https://doi.org/10.1007/s13202-023-01626-1 |
| work_keys_str_mv | AT olatunjiolayiwola priorassessmentofco2leakratethroughcrackssealedbynanoparticlegels AT vunguyen priorassessmentofco2leakratethroughcrackssealedbynanoparticlegels AT ningliu priorassessmentofco2leakratethroughcrackssealedbynanoparticlegels AT boyunguo priorassessmentofco2leakratethroughcrackssealedbynanoparticlegels |