Well Placement & Trajectory

Optimize well location and trajectory to make better drilling decisions

Minimizing NPT associated with wellbore instability reduces the risk of unplanned interventions and is required to complete the well on time and within budget.

Careful planning for complex well trajectories

When considering complex well trajectories in a field development plan the relationship between well path and wellbore stability is not always easy to assess with respect to hydraulics, casing, and drillstring design. Conventional azimuth or inclination versus mud weight diagrams only describe the mud weight window for a specific formation. The combined effect over several formations is difficult to visualize.

Model-based planning and prediction

Using a field scale predictive model Schlumberger geomechanics experts can help you choose well placement and trajectory options that give the most flexibility to your well design. The analysis uses different sources of information which can include 3D seismic, geophysical logs acquired while drilling and on wireline, and drilling event analysis, to generate a comprehensive 3D mechanical earth model (MEM). Multiple well trajectories can be investigated rapidly to find the most stable path from a surface location to the reservoir target. During drilling the model can be continuously updated with real-time data from services such as the PeriScope bed boundary mapper.

Consider all the options

During the sensitivity analysis, the wellbore stability forecast is compared for different well trajectories, considering the lateral and vertical variability related to the complex geology, e.g., allowing a well planner to assess stability across faults, a common occurrence in extended reach drilling (ERD). The developed prediction supports drilling decisions including casing points, mud weight design, and hazard mitigation.

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Well Placement Fundamentals: A Reference Book

Well Placement Fundamentals
Taking readers from the basics to complex well placement processes, this book serves as precourse reading for students and as a reference for industry professionals interested in drilling. Read book

Better Mud Weight Window Recommendation

Seismic Consulting Interpretation
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