Wellbore Steering Using Real-Time Rock Stress Direction
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Solution Overview
Problem
Current drilling operations often fail to accurately steer wellbores based on rock stress direction, leading to inefficiencies in resource extraction and potential stability issues.
Innovation Solution
The method involves using logging while drilling tools to obtain well data, including stress direction information, and a central processing unit to generate and update well trajectories that align with the direction of minimum horizontal stress, ensuring directional criteria are met during drilling operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional drilling operations are used without real-time stress direction monitoring, then the drilling process is simpler and faster to execute, but the wellbore steering accuracy deteriorates and resource extraction efficiency decreases
Solution Approach 1:
The system performs preliminary actions by obtaining stress direction information from logging while drilling tools before making steering decisions. The CPU generates well trajectories in advance and compares them with actual borehole directions, allowing the drilling operation to be adjusted proactively rather than reactively, thereby improving steering accuracy while maintaining operational efficiency
Solution Approach 2:
The invention implements continuous feedback by comparing the generated well trajectory with the actual borehole direction during drilling operations. This real-time comparison allows the system to detect deviations and adjust the drilling direction to match the minimum horizontal stress orientation, thereby improving wellbore steering accuracy through closed-loop control
2Productivity
If well trajectories are continuously updated based on real-time stress data, then resource extraction efficiency improves, but the processing time and computational requirements increase
Solution Approach 1:
The system applies partial action by focusing computational resources on critical steering decisions rather than continuously recalculating entire well trajectories. The CPU generates updated trajectories only when directional criteria are not satisfied, avoiding unnecessary computations and reducing time loss while maintaining productivity through targeted interventions
Solution Approach 2:
The invention changes parameters by monitoring stress direction information and borehole direction deviations, then adjusting well trajectory parameters only when the directional criteria indicate a problem. This selective parameter adjustment reduces computational overhead and processing time while maintaining optimal resource extraction efficiency
3Stability of the object's composition
If directional criteria are strictly enforced to align borehole with minimum horizontal stress, then wellbore stability improves, but the flexibility in wellpath design decreases
Solution Approach 1:
The system implements dynamics by making the wellpath design adaptable rather than fixed. The directional criteria serve as dynamic guidance that can be adjusted based on real-time stress measurements and formation characteristics, allowing the well trajectory to evolve optimally while maintaining stability through continuous alignment with minimum horizontal stress directions
Data Source
AI summary
A method of steering a drilling operation of a well using rock stress measurements. The method includes obtaining well data from at least one logging while drilling tool in the well, where the well data includes stress direction information, generating, using a central processing unit (CPU), a well trajectory using survey data from the well, where the well trajectory includes a borehole direction, determining, using the CPU, a direction of minimum horizontal stress using the well data, and comparing, using the CPU, the direction of minimum horizontal stress to the borehole direction to determine that a directional criteria is not satisfied. The method further includes in response to determining that the directional criteria is not satisfied, generating an updated well trajectory that satisfies the directional criteria and adjusting the drilling operation using the updated well trajectory.