Impact Assessment of Hydrate Cuttings Migration and Decomposition on Annular Temperature and Pressure in Deep Water Gas Hydrate Formation Riserless Drilling
The accurate prediction of wellbore temperature and pressure is important for safe drilling. However, annulus temperature and pressure changes are more complicated due to phase transition. To study this problem, a prediction model of temperature and pressure in deep water riserless drilling is estab...
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MDPI AG
2023-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/16/5903 |
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| author | Faling Yin Xingyu Ni Jindong Han Jianwei Di Youwei Zhou Xinxin Zhao Yonghai Gao |
| author_facet | Faling Yin Xingyu Ni Jindong Han Jianwei Di Youwei Zhou Xinxin Zhao Yonghai Gao |
| author_sort | Faling Yin |
| collection | DOAJ |
| description | The accurate prediction of wellbore temperature and pressure is important for safe drilling. However, annulus temperature and pressure changes are more complicated due to phase transition. To study this problem, a prediction model of temperature and pressure in deep water riserless drilling is established by considering hydrate cuttings decomposition, interphase mass transfer, and phase transition heat. Based on this model, the effects of hydrate cuttings decomposition on the temperature and pressure of drilling in a hydrate reservoir are explored. The results show that the influence of hydrate cuttings decomposition increases significantly with an increase in the inlet temperature. The influence of hydrate cuttings decomposition on temperature and pressure decreases with an increase in displacement. A small range in the variation of density and penetration rates has little impact on the annulus pressure but mainly affects the temperature. The influence of hydrate cuttings decomposition increases with an increase in the penetration rate. In normal drilling conditions, hydrate cuttings decomposition has little impact on annulus temperature and pressure, but under the conditions of a high inlet temperature, high hydrate saturation, low displacement, and high penetration rate, it is necessary to consider the impact of hydrate cuttings decomposition. This study can provide reference for the prediction of temperature and pressure in deep water hydrate reservoir riserless drilling. |
| first_indexed | 2024-03-10T23:57:54Z |
| format | Article |
| id | doaj.art-0799ae0683bd4031b4db312e1d7b36e4 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T23:57:54Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-0799ae0683bd4031b4db312e1d7b36e42023-11-19T00:55:51ZengMDPI AGEnergies1996-10732023-08-011616590310.3390/en16165903Impact Assessment of Hydrate Cuttings Migration and Decomposition on Annular Temperature and Pressure in Deep Water Gas Hydrate Formation Riserless DrillingFaling Yin0Xingyu Ni1Jindong Han2Jianwei Di3Youwei Zhou4Xinxin Zhao5Yonghai Gao6School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaCNPC Offshore Engineering Co., Ltd., Beijing 100028, ChinaCNPC Offshore Engineering Co., Ltd., Beijing 100028, ChinaCNPC Offshore Engineering Co., Ltd., Beijing 100028, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaThe accurate prediction of wellbore temperature and pressure is important for safe drilling. However, annulus temperature and pressure changes are more complicated due to phase transition. To study this problem, a prediction model of temperature and pressure in deep water riserless drilling is established by considering hydrate cuttings decomposition, interphase mass transfer, and phase transition heat. Based on this model, the effects of hydrate cuttings decomposition on the temperature and pressure of drilling in a hydrate reservoir are explored. The results show that the influence of hydrate cuttings decomposition increases significantly with an increase in the inlet temperature. The influence of hydrate cuttings decomposition on temperature and pressure decreases with an increase in displacement. A small range in the variation of density and penetration rates has little impact on the annulus pressure but mainly affects the temperature. The influence of hydrate cuttings decomposition increases with an increase in the penetration rate. In normal drilling conditions, hydrate cuttings decomposition has little impact on annulus temperature and pressure, but under the conditions of a high inlet temperature, high hydrate saturation, low displacement, and high penetration rate, it is necessary to consider the impact of hydrate cuttings decomposition. This study can provide reference for the prediction of temperature and pressure in deep water hydrate reservoir riserless drilling.https://www.mdpi.com/1996-1073/16/16/5903hydrate reservoirhydrate cuttingsriserless drillinghorizontal wellannular temperature and pressure |
| spellingShingle | Faling Yin Xingyu Ni Jindong Han Jianwei Di Youwei Zhou Xinxin Zhao Yonghai Gao Impact Assessment of Hydrate Cuttings Migration and Decomposition on Annular Temperature and Pressure in Deep Water Gas Hydrate Formation Riserless Drilling Energies hydrate reservoir hydrate cuttings riserless drilling horizontal well annular temperature and pressure |
| title | Impact Assessment of Hydrate Cuttings Migration and Decomposition on Annular Temperature and Pressure in Deep Water Gas Hydrate Formation Riserless Drilling |
| title_full | Impact Assessment of Hydrate Cuttings Migration and Decomposition on Annular Temperature and Pressure in Deep Water Gas Hydrate Formation Riserless Drilling |
| title_fullStr | Impact Assessment of Hydrate Cuttings Migration and Decomposition on Annular Temperature and Pressure in Deep Water Gas Hydrate Formation Riserless Drilling |
| title_full_unstemmed | Impact Assessment of Hydrate Cuttings Migration and Decomposition on Annular Temperature and Pressure in Deep Water Gas Hydrate Formation Riserless Drilling |
| title_short | Impact Assessment of Hydrate Cuttings Migration and Decomposition on Annular Temperature and Pressure in Deep Water Gas Hydrate Formation Riserless Drilling |
| title_sort | impact assessment of hydrate cuttings migration and decomposition on annular temperature and pressure in deep water gas hydrate formation riserless drilling |
| topic | hydrate reservoir hydrate cuttings riserless drilling horizontal well annular temperature and pressure |
| url | https://www.mdpi.com/1996-1073/16/16/5903 |
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