ÇAĞRILI KONUŞMALAR / KEYNOTES Invited Speeches ... - TPJD

Geomechanical Wellbore Stability Assesment for Sayındere, Karaboğaz,
Karababa Formations in Batı Gökçe Field
T. Tuğba Uyar 1 , Mustafa Verşan Kök 2
1 Turkish Petroleum Corporation, Drilling Department, Ankara
2 Middle East Technical University, Department of Petroleum and Natural Gas Engineering,
Ankara
Wellbore stability problems make up huge over-costs worldwide. Since in recent years declining
resource volumes and favorable oil prices are encouraging operators to drill deeper, more
complex well trajectories drilling for hydrocarbons have turn into a much more challenging task.
Furthermore, the complexity and variations of those wells have added the weight to planning
and problem anticipation at both drilling and production stages.
The article will describe the geomechanical wellbore stability analysis of Sayındere, Karaboğaz
and Karababa formations drilled in Batı Gökçe field, Adıyaman. The analysis assumes validity of
linear elastic theory for porous media and requires drilling reports, well logs, laboratory tests
and core analysis.
At the end of the work with the assessment of geomechanical wellbore stability analysis mud
weight window, which includes minimum mud weight and maximum mud weight will be
determined for the studied formations.
Keywords: Wellbore stability, acoustic logs, linear elastic theory, rock strength parameters
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