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Fully Automated Collision Avoidance Analysis and Wellbore Quality Monitoring in Real-Time

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Course Credit: 0.15 CEU, 1.5 PDH

One of the major obstacles that makes the collision avoidance analysis very cumbersome is to enter the location and survey of the offset wells. This study presents a novel approach to leverage real-time survey and a centralized database to conduct collision avoidance analysis and monitor wellbore quality in (near) real-time in a fully automated fashion.

As a first step, a quality check is conducted to process the real-time survey. Then, the actual wellbore path is compared with the planned path. Several metrics such as cumulative dogleg severity, tortuosity, cumulative tortuosity, unwanted lateral, vertical, and total curvature, lateral and vertical tortuosity index are implemented (according to latest industry standards) to quantify the wellbore quality. To conduct the automated collision avoidance analysis, a centralized database with more than 5 million wells and half a million surveys is used.

The Discrete Boundary Model is deployed to compute the center to center distance between the reference well and offset wells. The offset wellbore is divided into several nodes (according to the required accuracy, 10 ft. is used as a default) and the distance between the current survey stations of the reference well to all the nodes is computed to generate the “ladder plot”. Since a centralized database is used in this analysis, there is no need for the user to enter the offset well locations or surveys, which makes it very desirable for real-time applications. For wells with missing surveys, a synthetic wellbore path is generated, and the user is notified about the missing survey. When the real-time survey for each well is updated, collision avoidance analysis and wellbore quality calculations are updated accordingly. A user-friendly web-based visualization has been developed to share the results with the end user. In addition to the real-time applications, the developed tool can also be leveraged for future planning.

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Course Chapters

  • 1Fully Automated Collision Avoidance Analysis and Wellbore Quality Monitoring in Real-Time - Chapter 1
    Media Type: Video

Credits

Earn credits by completing this course0.15 CEU credit1.5 PDH credits

Speakers

Dr. Ali Karimi