Effect of dilute acid treatment on adhesion properties of Longmaxi black shale
Abstract Properties of shale in an acid environment are important when acid or CO2 is injected into geologic formations as a working fluid for enhanced oil and gas recovery, hydraulic fracturing and reduced fracture initiation pressure. It has previously been shown that acid fluids can enhance the f...
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KeAi Communications Co., Ltd.
2019
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oai:doaj.org-article:128cdd1fa12041eb914f1614a6020cb62021-12-02T12:15:16ZEffect of dilute acid treatment on adhesion properties of Longmaxi black shale10.1007/s12182-019-00376-21672-51071995-8226https://doaj.org/article/128cdd1fa12041eb914f1614a6020cb62019-10-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-019-00376-2https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Properties of shale in an acid environment are important when acid or CO2 is injected into geologic formations as a working fluid for enhanced oil and gas recovery, hydraulic fracturing and reduced fracture initiation pressure. It has previously been shown that acid fluids can enhance the formation conductivity and decrease the hardness of shale. However, less is known about the effect of dilute acid on the adhesion properties of shale. In the study, shale samples are characterized in detail with advanced analysis. Adhesion properties of shale via dilute acid treatment were revealed by atomic force microscopy (AFM) for the first time. Results indicate that acid treatment can greatly enhance adhesion forces of the shale surface. After acid treatment, the average adhesion forces show a platform-like growth with an increase in loading force. Through analysis of results from AFM, scanning electron microscopy, and X-ray diffraction, we affirm that the enhanced adhesion forces are mainly from increased specific surface area and reduced elastic modulus. The results presented in this work help understand the adhesion properties of shale oil/gas present in an acidic environment, which have great significance in unconventional resources development.Pan-Pan ZhangShou-Ceng TianMao ShengTian-Yu WangWaleed Ali KhanQuan XuLi-Zhi XiaoKeAi Communications Co., Ltd.articleShaleAcidCarbonatesAtomic force microscopeAdhesion forceScienceQPetrologyQE420-499ENPetroleum Science, Vol 16, Iss 6, Pp 1320-1331 (2019) |
| institution |
DOAJ |
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DOAJ |
| language |
EN |
| topic |
Shale Acid Carbonates Atomic force microscope Adhesion force Science Q Petrology QE420-499 |
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Shale Acid Carbonates Atomic force microscope Adhesion force Science Q Petrology QE420-499 Pan-Pan Zhang Shou-Ceng Tian Mao Sheng Tian-Yu Wang Waleed Ali Khan Quan Xu Li-Zhi Xiao Effect of dilute acid treatment on adhesion properties of Longmaxi black shale |
| description |
Abstract Properties of shale in an acid environment are important when acid or CO2 is injected into geologic formations as a working fluid for enhanced oil and gas recovery, hydraulic fracturing and reduced fracture initiation pressure. It has previously been shown that acid fluids can enhance the formation conductivity and decrease the hardness of shale. However, less is known about the effect of dilute acid on the adhesion properties of shale. In the study, shale samples are characterized in detail with advanced analysis. Adhesion properties of shale via dilute acid treatment were revealed by atomic force microscopy (AFM) for the first time. Results indicate that acid treatment can greatly enhance adhesion forces of the shale surface. After acid treatment, the average adhesion forces show a platform-like growth with an increase in loading force. Through analysis of results from AFM, scanning electron microscopy, and X-ray diffraction, we affirm that the enhanced adhesion forces are mainly from increased specific surface area and reduced elastic modulus. The results presented in this work help understand the adhesion properties of shale oil/gas present in an acidic environment, which have great significance in unconventional resources development. |
| format |
article |
| author |
Pan-Pan Zhang Shou-Ceng Tian Mao Sheng Tian-Yu Wang Waleed Ali Khan Quan Xu Li-Zhi Xiao |
| author_facet |
Pan-Pan Zhang Shou-Ceng Tian Mao Sheng Tian-Yu Wang Waleed Ali Khan Quan Xu Li-Zhi Xiao |
| author_sort |
Pan-Pan Zhang |
| title |
Effect of dilute acid treatment on adhesion properties of Longmaxi black shale |
| title_short |
Effect of dilute acid treatment on adhesion properties of Longmaxi black shale |
| title_full |
Effect of dilute acid treatment on adhesion properties of Longmaxi black shale |
| title_fullStr |
Effect of dilute acid treatment on adhesion properties of Longmaxi black shale |
| title_full_unstemmed |
Effect of dilute acid treatment on adhesion properties of Longmaxi black shale |
| title_sort |
effect of dilute acid treatment on adhesion properties of longmaxi black shale |
| publisher |
KeAi Communications Co., Ltd. |
| publishDate |
2019 |
| url |
https://doaj.org/article/128cdd1fa12041eb914f1614a6020cb6 |
| work_keys_str_mv |
AT panpanzhang effectofdiluteacidtreatmentonadhesionpropertiesoflongmaxiblackshale AT shoucengtian effectofdiluteacidtreatmentonadhesionpropertiesoflongmaxiblackshale AT maosheng effectofdiluteacidtreatmentonadhesionpropertiesoflongmaxiblackshale AT tianyuwang effectofdiluteacidtreatmentonadhesionpropertiesoflongmaxiblackshale AT waleedalikhan effectofdiluteacidtreatmentonadhesionpropertiesoflongmaxiblackshale AT quanxu effectofdiluteacidtreatmentonadhesionpropertiesoflongmaxiblackshale AT lizhixiao effectofdiluteacidtreatmentonadhesionpropertiesoflongmaxiblackshale |
| _version_ |
1718394555906129920 |