This workshop will provide attendees with an overview of wellbore tubular deformation modes which occur in geothermal wells that affect wellbore integrity and access. Various geothermal wellbore applications, commonly located in highly faulted and tectonically active regions, will be reviewed. An overview of deformation mechanisms, including buckles and shears arising from formation movements (i.e. depletion-induced subsidence), trapped annular pressure collapse, and parting of tubulars will be explored with associated impacts on well integrity. Logging and intervention methods used to detect and characterize the location, magnitude and nature of the deformations will be examined, with an emphasis on multifinger caliper (MFC) logging methods. Deformation case histories using the MFC analysis software program Well Xplore™ will be presented as well as how information obtained from such analyses can be used to assess well integrity, access risks and guide well design and well life.
Objectives of Workshop
The objectives of this workshop are to review:
- Formation and operational mechanisms leading to geothermal wellbore tubular deformations;
- MFC tool configuration and data collection best practices;
- Tubular deformation diagnosis and quantification using MFC analysis software; and
- Tools and practices used for QA/QC of MFC log data (e.g. erroneous data identification and handling).
You Will Learn
At the end of this workshop, attendees will gain an improved understandings and appreciation for:
- How various formation movements and operational loads can result in single and combined deformation modes (shear, collapse, buckling and parted tubulars);
- Utilizing MFC logging tools and analysis software to visualize, characterize, and quantify deformations prior to executing mitigation operations;
- Key considerations involved in the tool configuration and data collection practices of MFCs; and
- Using MFC analysis software to provide Finite Element Analysis (FEA) inputs for tubular deformation and geomechanics modeling.
Who Should Attend
This workshop has been developed for geothermal well integrity, completion, well servicing and production engineers, as well as the staff of logging service companies, related equipment manufacturers, and deformation mitigation and repair service providers.