Wellbore Stability Analysis


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Wellbore Stability Analysis
Wellbore instability while drilling can take many familiar forms such as stuck pipe, hole squeezing, lost circulation, severely-enlarged hole or difficult directional control. Some related problems can arise when these wells are finally drilled to target, including uncertain formation evaluation, poor cementing, casing deformations, and ineffective perforating. These issues cost the world-wide industry several billions of dollars a year in downtime, well construction costs, and lost production.

Advanced Geotechnology specializes in the evaluation, analysis and practical well engineering aspects of all types of wellbore instability, including tectonically-stressed brittle shales, smectite-rich shales, poorly-cemented sandstones and fractured carbonates. We provide our clients with best-in-class capabilities using our advanced software and proprietary analysis techniques developed over many years of consulting and research on this subject.

We have conducted more than 200 wellbore stability assessments in more than 20 countries around the globe for such clients as: , BP, Burlington, Chevron, Ecopetrol, EnCana, Husky Energy, Imperial Oil, Exxon-Mobil, Nexen, Pluspetrol, Murphy Oil, Shell International and Teikoku.
We have a wide range of experience in the topic including such aspects as:
         Openhole or barefoot completions
         Stability while drilling underbalanced
         Well design for partially-depleted reservoirs
         Lost circulation problems in fractured formations
         Permafrost and gas hydrates
         Drilling fluids optimization in reactive shales
         Area drilling performance studies

Our commercial well planning software, STABView is our preferred tool for stability evaluations, however we also have available several commercial finite-element, finite-difference, boundary-element and discrete-element models for more complex problems. Multiphase flow modeling software is available for coupled wellbore stability-hydraulics simulation for underbalanced drilling. Our staff are also highly skilled in deriving the maximum value from offset well data, wireline and LWD logs and laboratory test data.

Do not hesitate to contact us if you have a wellbore stability problem and could use our expertise. We would be pleased to offer our services to assist you in developing an optimal well design and avoid unnecessary downtime.
To download a PDF file (39 kB) containing a one page marketing sheet on these services, please click here.

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