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Well structure deformations are becoming more common as the oil industry develops soft reservoirs and higher-pressure deposits and uses enhanced recovery techniques like thermal stimulation. All of these scenarios present new structural challenges. Understanding the deformations, the mechanisms that cause them, and the functional limits of wells will guide future resource development. Nothing can replace good measurements for identifying new deformation mechanisms and calibrating the engineering models that clarify them. With the right processing, caliper measurements provide the most comprehensive deformation characterizations available.
Download Deformation Interpretation Brochure (PDF)
Noetic’s Wellbore Inspector system is a proprietary process for analyzing, visualizing, and interpreting caliper and other data to understand well deformations. The system has been under active development for over 10 years and continues to be enhanced with additional capabilities. There are three main components to the system:
Obtaining accurate and reliable data is fundamental to understanding well conditions. Tool configuration is critical for obtaining good caliper data and enabling advanced data analysis to fully characterize pipe deformations. It includes using an appropriate caliper tool, the correct number and placement of centralizers, adequate centralization force, mechanical decoupling within the tool string, and appropriate tool conveyance. Noetic provides guidance to operators and logging companies on tool string configuration and measurement procedures to obtain high quality log data.
Wellbore Inspector advanced data analysis algorithms use from caliper and survey data to generate a true 3-dimensional visualization of the wellbore cross-section and trajectory. This analysis extracts maximum value from the log data by identifying restrictions due to local pipe bending, shear, or buckling deformations in addition to the cross-section ovalization/collapse deformations that can be found by conventional data analysis. Well accessibility is also determined and expressed as the relationship between drift diameter and mandrel length. Complementary data sets (e.g. CCL, GR) can be combined with the caliper data to enhance interpretation.
Noetic combines its experience in log data analysis and well structure design with knowledge of well conditions from the Wellbore Inspector™ Client visualization tool to help operators identify the causes of tubular deformations and then find solutions to prevent, mitigate, or manage the deformations. We know the capabilities (and limitations) of log data analysis and the implications of tubular deformations on well integrity. Using this expertise, we work closely with well operators to discover what is happening downhole, why it is happening, and the solution.