Results 21 to 30 of about 5,239 (198)

Assessment of Chemical Effects on Wellbore Stability in Transition Shale Formation

Geofluids, 2022
Substantial research has been conducted on the mechanisms responsible for the wellbore collapse in shale formations. For chemically active soft shale formations, pore pressure and stress change due to osmotic pressure and hydration swelling are usually ...
Hai Lin, Jingen Deng, Chao Luo, Lin Li, Hailong Liu   +4 more
doaj   +1 more source

Analysis of Anisotropic Strength and Wellbore Unstable Zone in Shale Formation Relating to Water Content

Geofluids, 2023
During oil and gas exploitation, wellbore stability has always been the focus of many scholars. Instability of wellbore will lead to washouts, breakout, stuck pipe, mud loss, and so on, even the abandon of the well.
Linjie Qiu, Min Zhang, Yansen Wang
doaj   +1 more source

Modeling wellbore instability in hot dry rock under various temperature conditions

Unconventional Resources, 2023
Hot Dry Rock (HDR) is a renewable energy source that has garnered attention due to its abundant reserves, widespread distribution, and consistent energy supply.
Yu Suo, Muyu Dong, Wenyuan He, Xiaofei Fu, Zhejun Pan   +4 more
doaj   +1 more source

Analysis of the Influence of Downhole Drill String Vibration on Wellbore Stability

Machines, 2023
Most studies related to aspects of wellbore stability, such as wellbore breakage, block dropping, and wellbore expansion, revolve around the physicochemical interaction between drilling fluid and surrounding rock, but relevant studies show that drill ...
Yonggang Shan, Qilong Xue, Jin Wang, Yafeng Li, Chong Wang   +4 more
doaj   +1 more source

Shale problems and water-based drilling fluid optimisation in the Hassi Messaoud Algerian oil field [PDF]

, 2010
Drilling fluid formulation and properties play a fundamental role in drilling operations. Clay minerals behave initially as a beneficial rheological adjuvant in drilling muds.
Benmounah, Abdelbaki, Bergaya, Faiza, Canselier, Jean-Paul, Cohaut, Nathalie, Fourar, Karim, Khodja, Malika, Khodja, Mohamed   +6 more
core   +2 more sources

The performance of stochastic designs in wellbore drilling operations [PDF]

, 2017
© 2018, The Author(s). Wellbore drilling operations frequently entail the combination of a wide range of variables. This is underpinned by the numerous factors that must be considered in order to ensure safety and productivity.
A Eckert, A Elyasi, A Nouri, AM Al-Ajmi, B Pašić, C Kirchsteiger, CE Hottmann, D Moos, DB McWorter, DJ Hart, DT Secor, E Oort van, EM Anderson, G Blocher, G Chen, G Shanmugam, J Atkinson, J Jaky, J Zhang, JM Hammersley, K Terzaghi, K Terzaghi, KI Eshiet, L Radoslaw, L Vernik, M Aslannezhad, M Azadpour, MA Biot, MA Mohiuddin, ME French, MM Alam, N Morita, P Horsrud, PR Sheorey, PR Sheorey, PW Mayne, R Freij-Ayoub, R Gholami, RA Freeze, RA Howard, RE Caflisch, RZ Moayed, T Ma, T Ma, WM Bulleit, X Chen, X Chen, X Luo, X Zhang, Y Sheng   +49 more
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Experimental Analysis of Shale for Evaluating Shale Drilling Fluid Interaction in Agbada Formation [PDF]

, 2014
Aims: To characterize the shale samples from Agbada formation and to develop an inhibitive water-based mud for the shale types. Study Design: Experimental.
Dosunmu, A., Okoro, Emeka Emmanuel
core   +1 more source

Thermal effects on geologic carbon storage [PDF]

, 2017
The final publication is available at Springer via http://dx.doi.org/10.1016/j.earscirev.2016.12.011One of the most promising ways to significantly reduce greenhouse gases emissions, while carbon-free energy sources are developed, is Carbon Capture and ...
Rutqvist, Jonny, Vilarrasa Riaño, Víctor   +1 more
core   +2 more sources

Study on the Evolution Law of Wellbore Stability Interface during Drilling of Offshore Gas Hydrate Reservoirs

Energies, 2023
The study of wellbore stability in offshore gas hydrate reservoirs is an important basis for the large-scale exploitation of natural gas hydrate resources.
Xuefeng Li, Baojiang Sun, Baojin Ma, Hao Li, Huaqing Liu, Dejun Cai, Xiansi Wang, Xiangpeng Li   +7 more
doaj   +1 more source

Wellbore instability management using geomechanical modeling and wellbore stability analysis for Zubair shale formation in Southern Iraq [PDF]

Journal of Petroleum Exploration and Production Technology, 2021
AbstractWellbore instability problems cause nonproductive time, especially during drilling operations in the shale formations. These problems include stuck pipe, caving, lost circulation, and the tight hole, requiring more time to treat and therefore additional costs.
Raed H. Allawi, Mohammed S. Al-Jawad
openaire   +1 more source