Casing Running Tool with Integrated Plug Dropping Valve
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Solution Overview
Problem
Current cementing operations in oil and gas well drilling are inefficient, as they require removing the casing running tool for cementing, leading to immobilization or sticking of the casing string and incomplete cementing due to lack of continuous rotation and fluid circulation.
Innovation Solution
A method and apparatus that utilize a top drive casing installation system with a module incorporating a plug dropping tool and valves, allowing for continuous rotation and fluid circulation without removing the casing running tool, enabling efficient cement transmission into the well bore.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the casing running tool is removed for cementing operations, then cementing can be performed, but the casing string becomes immobilized or stuck and rig time is lost
Solution Approach 1:
The casing running tool is designed with multi-functionality to perform both casing installation and cementing operations. The tool includes a plug dropping mechanism and fluid circulation capability integrated into the casing running tool itself, eliminating the need for tool removal and enabling continuous operation for both functions
Solution Approach 2:
The invention merges the cementing function with the casing running tool by integrating a plug dropping tool and fluid circulation system into the existing casing running tool structure. This combination allows the single tool to perform both casing installation and cementing without removal
2Ease of manufacture
If the casing running tool is removed for cementing, then cementing can proceed, but continuous rotation cannot be maintained leading to incomplete cementing
Solution Approach 1:
The integrated tool provides universal functionality for both casing running and cementing operations, maintaining continuous rotation capability throughout the cementing process to ensure complete and reliable cementing results
3Ease of manufacture
If the casing running tool is removed for cementing, then cementing can be performed, but fluid circulation is interrupted reducing cementing efficiency
Solution Approach 1:
The multi-functional tool enables continuous fluid circulation during cementing operations by integrating pumping and circulation capabilities into the tool itself, eliminating interruptions and maintaining high cementing efficiency throughout the process
Data Source
AI summary
An improved method and apparatus for dropping a ball, plug or dart during oil and gas well operations (e.g., cementing operations) employs a specially configured valving member with curved and flat portions that alternatively direct fluid flow through a bore or opening in the valving member via an inner channel or around the periphery of the valving member in an outer channel. In one embodiment, the ball(s), dart(s) or plug(s) are contained in a sliding sleeve that shifts position responsive to valve rotation. An optional indicator indicates to a user or operator that a ball or plug has passed a selected one of the valving members.