Problem analysis of geotechnical well drilling in complex environment

Abstract

The article examines primary causes of problems occurring during the drilling of geotechnical wells (injection, production and monitoring wells) for in-situ leaching to extract uranium in South Kazakhstan. Such a drilling problem as hole caving which is basically caused by various chemical and physical factors (hydraulic, mechanical, etc.) has been thoroughly investigated. The analysis of packing causes has revealed that this problem usually occurs because of insufficient amount of drilling mud being associated with small cross section downward flow and relatively large cross section upward flow. This is explained by the fact that when spear bores are used to drill clay rocks, cutting size is usually rather big and there is a risk for clay particles to coagulate.

Original language	English
Title of host publication	IOP Conference Series: Earth and Environmental Science
Publisher	Institute of Physics Publishing
Volume	24
Edition	1
DOIs	https://doi.org/10.1088/1755-1315/24/1/012026
Publication status	Published - 2015
Event	Scientific and Technical Challenges in the Well Drilling Progress - Tomsk, Russian Federation Duration: 24 Nov 2014 → 27 Nov 2014

Conference

Conference	Scientific and Technical Challenges in the Well Drilling Progress
Country	Russian Federation
City	Tomsk
Period	24.11.14 → 27.11.14

ASJC Scopus subject areas

Earth and Planetary Sciences(all)
Environmental Science(all)

Access to Document

10.1088/1755-1315/24/1/012026

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Cite this

Kasenov, AK, Biletskiy, MT, Ratov, BT & Korotchenko, TV 2015, Problem analysis of geotechnical well drilling in complex environment. in IOP Conference Series: Earth and Environmental Science. 1 edn, vol. 24, 012026, Institute of Physics Publishing, Scientific and Technical Challenges in the Well Drilling Progress, Tomsk, Russian Federation, 24.11.14. https://doi.org/10.1088/1755-1315/24/1/012026

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abstract = "The article examines primary causes of problems occurring during the drilling of geotechnical wells (injection, production and monitoring wells) for in-situ leaching to extract uranium in South Kazakhstan. Such a drilling problem as hole caving which is basically caused by various chemical and physical factors (hydraulic, mechanical, etc.) has been thoroughly investigated. The analysis of packing causes has revealed that this problem usually occurs because of insufficient amount of drilling mud being associated with small cross section downward flow and relatively large cross section upward flow. This is explained by the fact that when spear bores are used to drill clay rocks, cutting size is usually rather big and there is a risk for clay particles to coagulate.",

author = "Kasenov, {A. K.} and Biletskiy, {M. T.} and Ratov, {B. T.} and Korotchenko, {Tatiana Valerievna}",

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AU - Biletskiy, M. T.

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N2 - The article examines primary causes of problems occurring during the drilling of geotechnical wells (injection, production and monitoring wells) for in-situ leaching to extract uranium in South Kazakhstan. Such a drilling problem as hole caving which is basically caused by various chemical and physical factors (hydraulic, mechanical, etc.) has been thoroughly investigated. The analysis of packing causes has revealed that this problem usually occurs because of insufficient amount of drilling mud being associated with small cross section downward flow and relatively large cross section upward flow. This is explained by the fact that when spear bores are used to drill clay rocks, cutting size is usually rather big and there is a risk for clay particles to coagulate.

AB - The article examines primary causes of problems occurring during the drilling of geotechnical wells (injection, production and monitoring wells) for in-situ leaching to extract uranium in South Kazakhstan. Such a drilling problem as hole caving which is basically caused by various chemical and physical factors (hydraulic, mechanical, etc.) has been thoroughly investigated. The analysis of packing causes has revealed that this problem usually occurs because of insufficient amount of drilling mud being associated with small cross section downward flow and relatively large cross section upward flow. This is explained by the fact that when spear bores are used to drill clay rocks, cutting size is usually rather big and there is a risk for clay particles to coagulate.

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