Quantitative Evaluation of Imbibition Damage Characteristics of Foaming Agent Solutions in Shale Reservoir
Shale reservoirs are characterized by extremely low porosity and permeability, poor connectivity, and high content of clay minerals. This leads to the reservoir being vulnerable to imbibition damage caused by foaming agent solutions during foam drainage gas recovery. It results in the decrease of re...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/16/5768 |
| _version_ | 1797445806990557184 |
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| author | Liangbin Dou Jingyang Chen Nan Li Jing Bai Yong Fang Rui Wang Kai Zhao |
| author_facet | Liangbin Dou Jingyang Chen Nan Li Jing Bai Yong Fang Rui Wang Kai Zhao |
| author_sort | Liangbin Dou |
| collection | DOAJ |
| description | Shale reservoirs are characterized by extremely low porosity and permeability, poor connectivity, and high content of clay minerals. This leads to the reservoir being vulnerable to imbibition damage caused by foaming agent solutions during foam drainage gas recovery. It results in the decrease of reservoir permeability and the reduction of gas well production and ultimate recovery. Therefore, as the most commonly used foam drainage gas production, it is particularly important. This study is structured as follows. First, we analyze and evaluate the characteristics of shale reservoirs within the target area, and that of mineral composition and microscopic pore throat structures. Second, we study foaming agent types and two types are selected to be applied in subsequent sensitivity tests. Simultaneously, the nuclear magnetic resonance (NMR) method was used to study the microscopic characteristics of reservoir damage and imbibition damage of shale, caused by the impact of foaming agent solutions during the foam drainage and gas recovery processes. Finally, it is concluded that the degree of damage to the core permeability is minimized when the concentration of foaming agents is 0.4–0.6%. A trend has been established for increased damage to the cores with increasing exposure time. Additionally, this study provides technical guidance for damage evaluation and reservoir protection in shale reservoir exploitation. |
| first_indexed | 2024-03-09T13:31:09Z |
| format | Article |
| id | doaj.art-6458a48f60e24043b9b230ae5a2322a5 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T13:31:09Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-6458a48f60e24043b9b230ae5a2322a52023-11-30T21:17:17ZengMDPI AGEnergies1996-10732022-08-011516576810.3390/en15165768Quantitative Evaluation of Imbibition Damage Characteristics of Foaming Agent Solutions in Shale ReservoirLiangbin Dou0Jingyang Chen1Nan Li2Jing Bai3Yong Fang4Rui Wang5Kai Zhao6College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaPetroChina Research Institute of Petroleum Exploration & Development, Beijing 100089, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaCollege of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaShale reservoirs are characterized by extremely low porosity and permeability, poor connectivity, and high content of clay minerals. This leads to the reservoir being vulnerable to imbibition damage caused by foaming agent solutions during foam drainage gas recovery. It results in the decrease of reservoir permeability and the reduction of gas well production and ultimate recovery. Therefore, as the most commonly used foam drainage gas production, it is particularly important. This study is structured as follows. First, we analyze and evaluate the characteristics of shale reservoirs within the target area, and that of mineral composition and microscopic pore throat structures. Second, we study foaming agent types and two types are selected to be applied in subsequent sensitivity tests. Simultaneously, the nuclear magnetic resonance (NMR) method was used to study the microscopic characteristics of reservoir damage and imbibition damage of shale, caused by the impact of foaming agent solutions during the foam drainage and gas recovery processes. Finally, it is concluded that the degree of damage to the core permeability is minimized when the concentration of foaming agents is 0.4–0.6%. A trend has been established for increased damage to the cores with increasing exposure time. Additionally, this study provides technical guidance for damage evaluation and reservoir protection in shale reservoir exploitation.https://www.mdpi.com/1996-1073/15/16/5768shale reservoirreservoir damagefoaming agentimbibition damagegas productionshale reservoirs productivity |
| spellingShingle | Liangbin Dou Jingyang Chen Nan Li Jing Bai Yong Fang Rui Wang Kai Zhao Quantitative Evaluation of Imbibition Damage Characteristics of Foaming Agent Solutions in Shale Reservoir Energies shale reservoir reservoir damage foaming agent imbibition damage gas production shale reservoirs productivity |
| title | Quantitative Evaluation of Imbibition Damage Characteristics of Foaming Agent Solutions in Shale Reservoir |
| title_full | Quantitative Evaluation of Imbibition Damage Characteristics of Foaming Agent Solutions in Shale Reservoir |
| title_fullStr | Quantitative Evaluation of Imbibition Damage Characteristics of Foaming Agent Solutions in Shale Reservoir |
| title_full_unstemmed | Quantitative Evaluation of Imbibition Damage Characteristics of Foaming Agent Solutions in Shale Reservoir |
| title_short | Quantitative Evaluation of Imbibition Damage Characteristics of Foaming Agent Solutions in Shale Reservoir |
| title_sort | quantitative evaluation of imbibition damage characteristics of foaming agent solutions in shale reservoir |
| topic | shale reservoir reservoir damage foaming agent imbibition damage gas production shale reservoirs productivity |
| url | https://www.mdpi.com/1996-1073/15/16/5768 |
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