Single-Run Indexing Tool for Lateral Passage Orientation
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Solution Overview
Problem
Current methods for forming lateral passages from a wellbore into a subsurface earth formation require multiple runs of tools, increasing costs and reducing productivity, and often result in improperly oriented passages due to lack of precise angular and vertical control.
Innovation Solution
A single-run indexing type passage forming tool with rotational and linear indexing capabilities, allowing for precise angular and vertical orientation of lateral passages without the need for repeated tool retrieval, using an indexing mechanism with annular arrays of teeth to ensure accurate positioning and orientation of multiple passages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple runs of tools are used to form lateral passages, then each passage can be formed individually, but the productivity decreases and costs increase due to repeated tool retrieval and re-running
Solution Approach 1:
The patent combines multiple lateral passage forming operations into a single continuous run by integrating an indexing mechanism with the passage forming tool. The tool forms multiple passages sequentially without being retrieved from the well, merging what were previously separate operations into one unified process.
Solution Approach 2:
The indexing mechanism enables dynamic repositioning of the passage forming tool between different angular positions and vertical locations while remaining in the well. This dynamic capability allows the tool to adapt its position for forming each subsequent lateral passage without retrieval.
2Manufacturing precision
If multiple runs of tools are used to form lateral passages, then each passage can be formed with individual attention, but the time consumption increases significantly
Solution Approach 1:
The indexing mechanism is pre-configured with indexing teeth and reference markers that establish precise angular positions before the passage forming operation begins. This preliminary setup enables rapid, accurate positioning for each lateral passage without time-consuming adjustments during the operation.
Solution Approach 2:
The patent replaces the traditional mechanical retrieval and re-positioning system with an indexing mechanism that uses engaged teeth and reference markers to automatically position the tool. This substitution eliminates the time lost to manual retrieval and re-positioning operations.
3Device complexity
If traditional tools are used without indexing capability, then the device complexity is lower, but the orientation precision of lateral passages deteriorates
Solution Approach 1:
The indexing mechanism is segmented into distinct components including indexing teeth on the passage forming tool, corresponding indexing features on the setting tool, and reference markers. This segmentation allows each component to be relatively simple while the collective system achieves high precision through their coordinated interaction.
Data Source
AI summary
A method and apparatus for forming multiple lateral passages from a wellbore into a subsurface earth formation to facilitate enhancement of the production of oil, gas, heavy oil or minerals from the formation. A plurality of lateral passages are formed from a wellbore into a subsurface formation through the use of a single-run passage forming tool to minimize rig time and associated costs. A downhole indexing tool is positioned downhole and has indexing sections for positioning and indexing of a downhole well service tool and establishes precise radial orientation and location of the tool for its well servicing operation. Sequential unidirectional rotational indexing is accomplished by an indexing control stinger having a J-slot indexing system defining a circumferential slot section defining a desired number of indexing positions that are sequenced responsive to linear reciprocating movement of the indexing control stinger.