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BHOS Tezisler 2022 17x24sm

THE 3
rd
 INTERNATIONAL SCIENTIFIC CONFERENCES OF STUDENTS AND YOUNG RESEARCHERS 
dedicated to the 99
th
anniversary of the National Leader of Azerbaijan Heydar Aliyev
81
In mechanical research, the theory of linear elastic continuity is used to 
study the stress state around the wellbore. Theoretical fracture and collapse 
pressures are then determined according to the strength criteria to prevent 
the collapse of a particular wellbore. Chemical researches are aimed at 
preventing the instability of the wellbore due to the effects of drilling mud and 
the use of oil-based solutions. There are two aspects: First, to prevent water 
from penetrating the wellbore into the wellbore, and second, to prevent the 
clay from expanding due to hydration. 
References 
[1] Bradley, W.B. "Failure of Inclined Boreholes, 
(Journal of energy resources technology)

Transactions of the American Society of Mechanical Engineers. (1979) p.101, 232-239. 
[2] Bradley, W.B "Mathematical Concept - Stress Cloud - Can Predict Borehole Failure, 
(Oil & 
gas journal). 
(1979) p. 75-102
 
[3] Chenevert M.E. "Shale Alteration by Water Adsorption
(Journal of petroleum technology) 
(1970) p.1141-1147.
[4] Chenevert, M.E., and 
Osisanya, S.O
. "Shale/Mud Inhibition Defined with Rig-Site 
Methods, 
(SPE Drilling Engineering)
, (1989) p.261-268 
[5] Darley, H. "A laboratory Investigation of Borehole Instability, 
(Journal of Petroleum 
Technology)
(1969) p.883-892, Trans. AIME 246.
[6] Fairhurst, C. "Methods of Determining In-Situ Rock Stresses at Great Depth", TRI-68 
Missouri River Div. Corps of Engineers. (1988) 
[7] Kelly, 
John Jr.
"Drilling Problem Shales
(Oil & gas journal) 
(1968) 67-70.
[8] Kelly, 
John Jr.
"A New Look at Troublesome Shales-2, 
(Oil & gas journal)
(1968) p. 94-112 
[9] Van Olphen, "Compaction of Clay Sediments in the Range of Molecular Particle 
Distances," Paper in 11th National Conference on Clays and Clay Minerals, Vol. 13; 13-
17 August 1962, 178-187. Ottawa, Ontario, Canada 

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