Smart Stabilizer with Retractable Roller Reamers for Wellbore Centering
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Solution Overview
Problem
Existing wellbore opening technologies often require multiple trips and additional operations to widen the wellbore, which can lead to inefficiencies, poor hole quality, and increased risk of formation damage due to prolonged exposure, especially in horizontal or deviated wells where frictional forces and non-uniformities are prevalent.
Innovation Solution
A smart hole-opener system with retractable and extendable roller reamers and stabilizers, equipped with sensors and hydraulic power units, that can be controlled remotely to adjust and maintain wellbore dimensions in real-time, allowing for simultaneous drilling and hole enlargement with improved centering and stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple trips and additional operations are performed to widen the wellbore, then the wellbore can be enlarged to required dimensions, but the efficiency decreases and time is lost
Solution Approach 1:
The patent combines the drilling function and hole-enlargement function into a single integrated bottomhole assembly. The hole-opener with extendable cutting elements is integrated with the drill string, allowing simultaneous drilling and wellbore widening in one continuous operation, eliminating the need for separate trips to perform enlargement operations.
Solution Approach 2:
The hole-opener employs actuate-able members that can dynamically extend outward from the drill string and retract. This dynamic configuration allows the cutting elements to be deployed when needed for widening the wellbore and retracted when not needed, providing adaptability during the drilling process and enabling single-trip operations.
2Manufacturing precision
If multiple trips are performed to widen the wellbore, then the wellbore can be enlarged, but the hole quality deteriorates due to prolonged exposure
Solution Approach 1:
The integrated bottomhole assembly enables continuous drilling and wellbore widening operations without interruption or tripping. The hole-opener operates continuously alongside the drill bit, maintaining constant engagement with the formation and eliminating idle exposure time that would otherwise occur during tripping and re-entry operations.
3Productivity
If actuate-able hole-openers are used to widen the wellbore, then the wellbore can be enlarged in a single trip, but the device complexity increases
Solution Approach 1:
The actuate-able members of the hole-opener are nested within the drill string when not in use. The cutting elements can extend outward from the drill string body and then retract back inside, creating a compact configuration that fits within the existing drill string diameter. This nesting arrangement reduces overall device complexity by utilizing the existing drill string structure as the retracted position for the cutting elements.
4Manufacturing precision
If the hole-opener members extend outward to widen the wellbore, then the wellbore diameter increases, but the frictional forces increase in horizontal or deviated wells
Solution Approach 1:
The hole-opener employs dynamically extendable and retractable members that can adjust their configuration based on operational needs. In horizontal or deviated wells, the members can be retracted to minimize contact with the wellbore wall and reduce frictional forces, while still enabling wellbore widening when needed by extending outward.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system enables real-time monitoring and adjustment of wellbore parameters, reducing friction, maintaining hole quality, and minimizing the need for additional trips, thus saving time and resources while preventing formation damage.
Implementation Method 1
The hydraulic power unit includes a hydraulic pump configured to supply hydraulic fluid at a pressure sufficient to extend and retract the roller reamer
Implementation Method 2
An expansion member is configured to expand when pressurized hydraulic fluid is received into the expansion member
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A retractable and extendable roller reamer is positioned on a string. The retractable and extendable roller reamer is configured to support and centralize the string within the wellbore. An extension and retraction mechanism is configured to extend and retract the roller reamer. A hydraulic power unit is configured to control the extension and retraction mechanism. Sensors positioned on or within the roller reamer. The sensors are configured to detect parameters of the well-string stabilizing system. A controller is operatively coupled to the hydraulic power unit and the plurality of sensors. The controller is configured to be positioned in a wellbore. The controller is configured to receive signals from the sensors. The signals represent the parameters detected by the sensors. The controller is configured to identify the parameters represented by the signals. The controller is configured to adjust a well-string stabilizing operation in response to the received signals.