Results 81 to 90 of about 11,928 (225)

Premiminary tests on modified clays for electrolyte contaminated drilling fluids [PDF]

, 2015
The quality of a bentonite suspension declines in aggressive systems like brackish or saline pore water. An engineered clay (HYPER clay) was developed for sealing materials with enhanced resistance to aggressive conditions.
Bezuijen, Adam, den Hamer, Davina, Di Emidio, Gemmina, Verastegui Flores, Daniel   +3 more
core   +1 more source

Quantifying Parametric Influence on Cuttings Transport in Deviated Deep Wells Using Global Sensitivity Analysis Methods

Energy Science &Engineering, Volume 14, Issue 3, Page 1398-1415, March 2026.
Cuttings transport simulation workflow. ABSTRACT Efficient cuttings transport is essential for wellbore stability and minimizing non‐productive time in deviated and horizontal wells. This study applies global sensitivity analysis (GSA) to evaluate the influence of 14 drilling parameters on cuttings transport using WellPlanTM hydraulic simulations ...
Esraa A. Refaie, Said K. El‐Sayed, Ahmed Z. Noah, Mostafa M. Abdelhafiz   +3 more
wiley   +1 more source

Elastic-brittle-plastic behaviour of shale reservoirs and its implications on fracture permeability variation: an analytical approach [PDF]

, 2018
Shale gas has recently gained significant attention as one of the most important unconventional gas resources. Shales are fine-grained rocks formed from the compaction of silt and clay sized particles and are characterised by their fissured texture and ...
Hashemi, Amid, Marshall, Alec M., Masoudian, Mohsen S., Tasalloti, Ali   +3 more
core   +2 more sources

Selecting the method of gas hydrate deposits development in terms of the regularities of their formation [PDF]

, 2018
Purpose. To establish and show regularities of gas hydrates fields distribution in the World Ocean for the development of flow diagrams of methane extraction depending on genetic structures and the composition of the host rocks. Methods. The analysis of
Maksymova, E
core   +1 more source

Borehole stability in naturally fractured rocks with drilling mud intrusion and associated fracture strength weakening: A coupled DFN-DEM approach

Journal of Rock Mechanics and Geotechnical Engineering
Borehole instability in naturally fractured rocks poses significant challenges to drilling. Drilling mud invades the surrounding formations through natural fractures under the difference between the wellbore pressure (Pw) and pore pressure (Pp) during ...
Yaoran Wei, Yongcun Feng, Zhenlai Tan, Tianyu Yang, Xiaorong Li, Zhiyue Dai, Jingen Deng   +6 more
doaj   +1 more source

Characterization of Shale-Drilling Fluid Interaction Mechanisms Related to Wellbore Instability

Journal of King Saud University: Engineering Sciences, 1996
Wellbore stability problems tend to occur during the drilling phase in shale sections, hence the understanding of shale-drilling fluid interaction mechanisms is essential if wellbore instability is to be avoided when drilling through shale sections.
Musaed N.J. Al-Awad, B.G.D. Smart
doaj   +1 more source

Thermo-poroelastic analysis of drilling fluid pressure and temperature on wellbore stresses in the Mansouri oilfield, SW Iran

Results in Earth Sciences
Ensuring wellbore stability is essential for successful oilfield drilling operations, as instability can prolong drilling time and escalate costs, potentially resulting in halted operations and loss of wells.
Alireza Pirhadi, Pooria Kianoush, Shahab Varkouhi, Reza Shirinabadi, Adel Shirazy, Aref Shirazi, Arash Ebrahimabadi   +6 more
doaj   +1 more source

Enhancing drilling operations: prioritizing wellbore integrity, formation preservation, and effective mud waste control (case study)

Journal of Engineering and Applied Science
This study examined the issues of wellbore instability encountered during the drilling of the vertical exploration Al-Rateena-1 well, Block 25D, Al-Rawat Field, Sudan.
Ahmed Abdelaziz Ibrahim Elrayah
doaj   +1 more source

Borehole stability analysis in a thermoporoelastic dual-porosity medium

, 2012
International audienceThe problem of diffusion and mass transfer in dual porous media is considered in a threephase framework. The solid phase is assumed to contain two distinct cavities filled with fluid.
Gelet, Rachel, Khalili, Nasser, Loret, Benjamin   +2 more
core   +3 more sources

Вибір стабілізованих компоновок низу бурильної колони для буріння свердловин [PDF]

, 2016
Запропоновано модель вибору стабілізованих компоновок низу бурильної колони (КНБК) із урахуванням інформаційної невизначеності про контакт опорно-центруючих елементів (ОЦЕ) зі стінкою свердловини.
Долик, Р. М., Мислюк, М. А.   +1 more
core