Prediction of dynamic liquid level in water-producing shale gas wells based on liquid film model
The accumulation of liquid in shale gas wells will lead to an increase in bottom-hole pressure, and a decrease in production, even the shutdown of gas wells. Accurately predicting the variation of liquid height in shale gas wellbore and the corresponding production is helpful to determine the liquid...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2023-08-01
|
| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1230470/full |
| _version_ | 1797739361463173120 |
|---|---|
| author | Jie Nie Lingxi Qiao BenQiang Wang Weiyang Wang Weiyang Wang Mingzhong Li Mingzhong Li Chenru Zhou |
| author_facet | Jie Nie Lingxi Qiao BenQiang Wang Weiyang Wang Weiyang Wang Mingzhong Li Mingzhong Li Chenru Zhou |
| author_sort | Jie Nie |
| collection | DOAJ |
| description | The accumulation of liquid in shale gas wells will lead to an increase in bottom-hole pressure, and a decrease in production, even the shutdown of gas wells. Accurately predicting the variation of liquid height in shale gas wellbore and the corresponding production is helpful to determine the liquid accumulation status and the development of reasonable drainage construction plans. It can provide theoretical support for the efficient and stable production of shale gas wells. A predictive analysis model of shale gas wellbore liquid accumulation was established based on a liquid film carrying model, which considers the coupling of flow in the reservoir and wellbore in shale gas production system. This model can accurately predict the liquid accumulation height, production rate, and the bottomhole pressure changes in liquid-accumulating gas wells. A comparative analysis was conducted on the effect of wellbore structure on liquid accumulation characteristics in the typical upward-type and downward-type horizontal wells in the W block. In upward-type horizontal wells, the liquid height increases slowly before the liquid accumulation fills the horizontal section, and the liquid height increases rapidly after the liquid accumulation fills the horizontal section. Compared to upward-type horizontal wells, the liquid height rises more quickly and the gas production rate is more sensitive to liquid accumulation in downward-type horizontal wells. |
| first_indexed | 2024-03-12T13:56:44Z |
| format | Article |
| id | doaj.art-4c8e4d6ebb7d42468ccbff8eb237a478 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-03-12T13:56:44Z |
| publishDate | 2023-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-4c8e4d6ebb7d42468ccbff8eb237a4782023-08-22T13:54:59ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-08-011110.3389/feart.2023.12304701230470Prediction of dynamic liquid level in water-producing shale gas wells based on liquid film modelJie Nie0Lingxi Qiao1BenQiang Wang2Weiyang Wang3Weiyang Wang4Mingzhong Li5Mingzhong Li6Chenru Zhou7Shale Gas Exploration and Development Department, CNPC Chuanqing Drilling Engineering Co., Ltd., Chengdu, Sichuan, ChinaShale Gas Exploration and Development Department, CNPC Chuanqing Drilling Engineering Co., Ltd., Chengdu, Sichuan, ChinaShale Gas Exploration and Development Department, CNPC Chuanqing Drilling Engineering Co., Ltd., Chengdu, Sichuan, ChinaKey Laboratory of Unconventional Oil and Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, ChinaSchool of Petroleum Engineering, China University of Petroleum, Qingdao, ChinaKey Laboratory of Unconventional Oil and Gas Development (China University of Petroleum (East China)), Ministry of Education, Qingdao, ChinaSchool of Petroleum Engineering, China University of Petroleum, Qingdao, ChinaSchool of Petroleum Engineering, China University of Petroleum, Qingdao, ChinaThe accumulation of liquid in shale gas wells will lead to an increase in bottom-hole pressure, and a decrease in production, even the shutdown of gas wells. Accurately predicting the variation of liquid height in shale gas wellbore and the corresponding production is helpful to determine the liquid accumulation status and the development of reasonable drainage construction plans. It can provide theoretical support for the efficient and stable production of shale gas wells. A predictive analysis model of shale gas wellbore liquid accumulation was established based on a liquid film carrying model, which considers the coupling of flow in the reservoir and wellbore in shale gas production system. This model can accurately predict the liquid accumulation height, production rate, and the bottomhole pressure changes in liquid-accumulating gas wells. A comparative analysis was conducted on the effect of wellbore structure on liquid accumulation characteristics in the typical upward-type and downward-type horizontal wells in the W block. In upward-type horizontal wells, the liquid height increases slowly before the liquid accumulation fills the horizontal section, and the liquid height increases rapidly after the liquid accumulation fills the horizontal section. Compared to upward-type horizontal wells, the liquid height rises more quickly and the gas production rate is more sensitive to liquid accumulation in downward-type horizontal wells.https://www.frontiersin.org/articles/10.3389/feart.2023.1230470/fullliquid loadingliquid levelshale gas wellsliquid film modelfluid accumulation prediction |
| spellingShingle | Jie Nie Lingxi Qiao BenQiang Wang Weiyang Wang Weiyang Wang Mingzhong Li Mingzhong Li Chenru Zhou Prediction of dynamic liquid level in water-producing shale gas wells based on liquid film model Frontiers in Earth Science liquid loading liquid level shale gas wells liquid film model fluid accumulation prediction |
| title | Prediction of dynamic liquid level in water-producing shale gas wells based on liquid film model |
| title_full | Prediction of dynamic liquid level in water-producing shale gas wells based on liquid film model |
| title_fullStr | Prediction of dynamic liquid level in water-producing shale gas wells based on liquid film model |
| title_full_unstemmed | Prediction of dynamic liquid level in water-producing shale gas wells based on liquid film model |
| title_short | Prediction of dynamic liquid level in water-producing shale gas wells based on liquid film model |
| title_sort | prediction of dynamic liquid level in water producing shale gas wells based on liquid film model |
| topic | liquid loading liquid level shale gas wells liquid film model fluid accumulation prediction |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1230470/full |
| work_keys_str_mv | AT jienie predictionofdynamicliquidlevelinwaterproducingshalegaswellsbasedonliquidfilmmodel AT lingxiqiao predictionofdynamicliquidlevelinwaterproducingshalegaswellsbasedonliquidfilmmodel AT benqiangwang predictionofdynamicliquidlevelinwaterproducingshalegaswellsbasedonliquidfilmmodel AT weiyangwang predictionofdynamicliquidlevelinwaterproducingshalegaswellsbasedonliquidfilmmodel AT weiyangwang predictionofdynamicliquidlevelinwaterproducingshalegaswellsbasedonliquidfilmmodel AT mingzhongli predictionofdynamicliquidlevelinwaterproducingshalegaswellsbasedonliquidfilmmodel AT mingzhongli predictionofdynamicliquidlevelinwaterproducingshalegaswellsbasedonliquidfilmmodel AT chenruzhou predictionofdynamicliquidlevelinwaterproducingshalegaswellsbasedonliquidfilmmodel |