Phase Equilibrium of Methane Hydrates in the Presence of MgBr 2 , CaBr 2 , and ZnBr 2 Aqueous Solutions
Hydrate formation in natural gas transportation pipelines and during completion and workover operations is considered to be a serious issue. CaBr 2 and ZnBr 2 salts are widely used to design high-density completion fluids for completion of oil and gas wells; however, information on the hydrate phase...
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ftsmithonian:oai:figshare.com:article/14627293 2023-05-15T17:11:42+02:00 Phase Equilibrium of Methane Hydrates in the Presence of MgBr 2 , CaBr 2 , and ZnBr 2 Aqueous Solutions Dnyaneshwar R. Bhawangirkar (6984695) Jitendra S. Sangwai (1335546) 2021-05-20T00:00:00Z https://doi.org/10.1021/acs.jced.1c00121.s001 unknown https://figshare.com/articles/journal_contribution/Phase_Equilibrium_of_Methane_Hydrates_in_the_Presence_of_MgBr_sub_2_sub_CaBr_sub_2_sub_and_ZnBr_sub_2_sub_Aqueous_Solutions/14627293 doi:10.1021/acs.jced.1c00121.s001 CC BY-NC 4.0 CC-BY-NC Biophysics Biochemistry Microbiology Pharmacology Space Science Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified inhibition effect hydrate phase equilibria completion fluids MgBr 2 isochoric pressure search method wt CaBr 2 gas transportation pipelines workover operations 129 phase equilibrium experiments L-H-V concentration ZnBr 2 Aqueous Solutions Hydrate fo. ZnBr 2 ZnBr 2 salts methane hydrate phase equilibria methane hydrate equilibrium conditions gas production operations Text Journal contribution 2021 ftsmithonian https://doi.org/10.1021/acs.jced.1c00121.s001 2021-05-21T14:22:56Z Hydrate formation in natural gas transportation pipelines and during completion and workover operations is considered to be a serious issue. CaBr 2 and ZnBr 2 salts are widely used to design high-density completion fluids for completion of oil and gas wells; however, information on the hydrate phase equilibria in the presence of these salts is missing. In this study, a three-phase liquid water–hydrate–vapor (L-H-V) equilibrium conditions for methane hydrate in aqueous solutions of MgBr 2 , CaBr 2 , and ZnBr 2 at 0.1, 0.25, 0.5, 0.75, 1, 3, 5, 10, and 15 wt % in the temperature and pressure range of 276.5–285.4 K and 3.65–9.56 MPa have been reported using the isochoric pressure search method. A total of 129 phase equilibrium experiments have been performed. At low concentrations of the salt, that is, 0.1–0.75 wt %, the thermodynamic inhibition was found to be low and close to the methane hydrate equilibrium conditions in pure water. The inhibition effect is found to increase beyond 1 wt %, becomes significant after 3 wt % salt concentration, and is found to increase with an increase in the salt concentration. In accordance with the hydrated radius and ionic weight, the inhibition effect of salts on the methane hydrate phase equilibria is in the order of MgBr 2 > CaBr 2 > ZnBr 2 . The heat of dissociation (evaluated using the Clausius–Clapeyron equation) for methane hydrates in aqueous salt systems is found to be in the order of ZnBr 2 > CaBr 2 > MgBr 2 . This study will be useful to design efficient completion fluids for completion and workover operations for onshore and offshore oil and gas production operations. Other Non-Article Part of Journal/Newspaper Methane hydrate Unknown |
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topic |
Biophysics Biochemistry Microbiology Pharmacology Space Science Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified inhibition effect hydrate phase equilibria completion fluids MgBr 2 isochoric pressure search method wt CaBr 2 gas transportation pipelines workover operations 129 phase equilibrium experiments L-H-V concentration ZnBr 2 Aqueous Solutions Hydrate fo. ZnBr 2 ZnBr 2 salts methane hydrate phase equilibria methane hydrate equilibrium conditions gas production operations |
spellingShingle |
Biophysics Biochemistry Microbiology Pharmacology Space Science Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified inhibition effect hydrate phase equilibria completion fluids MgBr 2 isochoric pressure search method wt CaBr 2 gas transportation pipelines workover operations 129 phase equilibrium experiments L-H-V concentration ZnBr 2 Aqueous Solutions Hydrate fo. ZnBr 2 ZnBr 2 salts methane hydrate phase equilibria methane hydrate equilibrium conditions gas production operations Dnyaneshwar R. Bhawangirkar (6984695) Jitendra S. Sangwai (1335546) Phase Equilibrium of Methane Hydrates in the Presence of MgBr 2 , CaBr 2 , and ZnBr 2 Aqueous Solutions |
topic_facet |
Biophysics Biochemistry Microbiology Pharmacology Space Science Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Physical Sciences not elsewhere classified inhibition effect hydrate phase equilibria completion fluids MgBr 2 isochoric pressure search method wt CaBr 2 gas transportation pipelines workover operations 129 phase equilibrium experiments L-H-V concentration ZnBr 2 Aqueous Solutions Hydrate fo. ZnBr 2 ZnBr 2 salts methane hydrate phase equilibria methane hydrate equilibrium conditions gas production operations |
description |
Hydrate formation in natural gas transportation pipelines and during completion and workover operations is considered to be a serious issue. CaBr 2 and ZnBr 2 salts are widely used to design high-density completion fluids for completion of oil and gas wells; however, information on the hydrate phase equilibria in the presence of these salts is missing. In this study, a three-phase liquid water–hydrate–vapor (L-H-V) equilibrium conditions for methane hydrate in aqueous solutions of MgBr 2 , CaBr 2 , and ZnBr 2 at 0.1, 0.25, 0.5, 0.75, 1, 3, 5, 10, and 15 wt % in the temperature and pressure range of 276.5–285.4 K and 3.65–9.56 MPa have been reported using the isochoric pressure search method. A total of 129 phase equilibrium experiments have been performed. At low concentrations of the salt, that is, 0.1–0.75 wt %, the thermodynamic inhibition was found to be low and close to the methane hydrate equilibrium conditions in pure water. The inhibition effect is found to increase beyond 1 wt %, becomes significant after 3 wt % salt concentration, and is found to increase with an increase in the salt concentration. In accordance with the hydrated radius and ionic weight, the inhibition effect of salts on the methane hydrate phase equilibria is in the order of MgBr 2 > CaBr 2 > ZnBr 2 . The heat of dissociation (evaluated using the Clausius–Clapeyron equation) for methane hydrates in aqueous salt systems is found to be in the order of ZnBr 2 > CaBr 2 > MgBr 2 . This study will be useful to design efficient completion fluids for completion and workover operations for onshore and offshore oil and gas production operations. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Dnyaneshwar R. Bhawangirkar (6984695) Jitendra S. Sangwai (1335546) |
author_facet |
Dnyaneshwar R. Bhawangirkar (6984695) Jitendra S. Sangwai (1335546) |
author_sort |
Dnyaneshwar R. Bhawangirkar (6984695) |
title |
Phase Equilibrium of Methane Hydrates in the Presence of MgBr 2 , CaBr 2 , and ZnBr 2 Aqueous Solutions |
title_short |
Phase Equilibrium of Methane Hydrates in the Presence of MgBr 2 , CaBr 2 , and ZnBr 2 Aqueous Solutions |
title_full |
Phase Equilibrium of Methane Hydrates in the Presence of MgBr 2 , CaBr 2 , and ZnBr 2 Aqueous Solutions |
title_fullStr |
Phase Equilibrium of Methane Hydrates in the Presence of MgBr 2 , CaBr 2 , and ZnBr 2 Aqueous Solutions |
title_full_unstemmed |
Phase Equilibrium of Methane Hydrates in the Presence of MgBr 2 , CaBr 2 , and ZnBr 2 Aqueous Solutions |
title_sort |
phase equilibrium of methane hydrates in the presence of mgbr 2 , cabr 2 , and znbr 2 aqueous solutions |
publishDate |
2021 |
url |
https://doi.org/10.1021/acs.jced.1c00121.s001 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
https://figshare.com/articles/journal_contribution/Phase_Equilibrium_of_Methane_Hydrates_in_the_Presence_of_MgBr_sub_2_sub_CaBr_sub_2_sub_and_ZnBr_sub_2_sub_Aqueous_Solutions/14627293 doi:10.1021/acs.jced.1c00121.s001 |
op_rights |
CC BY-NC 4.0 |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.1021/acs.jced.1c00121.s001 |
_version_ |
1766068473511804928 |