One Piece Forged Drill Pipe Synthetic Liner Fluid Displacement
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Solution Overview
Problem
Existing horizontal directional drilling (HDD) technologies face challenges in efficiently delivering and managing drilling fluid, particularly with one piece forged drill pipes, where reducing the internal diameter is necessary to enhance fluid flow and reduce waste, but previous solutions are not applicable due to design limitations.
Innovation Solution
A one piece forged fluidic displacement pipe with a synthetic liner made of flexible, non-metallic plastic materials is introduced, which decreases the internal diameter of the metal pipe, allowing for faster pressurization and cleanup by forming a semi-solid circular ring within the pipe, enabling efficient fluid flow and reducing fluid volume requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the internal diameter of the drill pipe is reduced to decrease fluid volume and improve pressurization speed, then the time to fill and pressure the pipe is reduced, but conventional solutions cannot be applied to one piece forged pipes due to design limitations
Solution Approach 1:
The patent applies nesting by placing a cylindrical liner inside the one piece forged drill pipe. The liner is inserted through the upset ends of the pipe and positioned within the internal diameter, creating a nested configuration that reduces the effective internal volume while maintaining compatibility with the forged pipe structure. This resolves the adaptability issue by providing a solution that works specifically for one piece forged pipes with upset ends.
Solution Approach 2:
The liner is provided as a separate component that can be inserted and positioned within the pipe, rather than being an integral part of the pipe itself. This segmentation allows the liner to be installed in the pipe interior and positioned at the desired location, making the solution adaptable to one piece forged pipes while maintaining the ability to reduce fluid volume and improve pressurization speed.
2Productivity
If a cylindrical liner is used to reduce internal volume and improve fluid pressurization, then fluid waste is reduced and pressurization is faster, but the liner cannot be installed in one piece forged pipes because the upset ends internal diameter is smaller than the liner outer diameter
Solution Approach 1:
The liner is designed with specific dimensional characteristics that allow it to be inserted through the upset ends of the pipe. The liner's outer diameter is sized to pass through the upset end openings, and once positioned, it reduces the internal volume where needed. This local adaptation of dimensions enables both fast pressurization and ease of installation in one piece forged pipes.
3Quantity of substance
If the internal diameter is reduced to decrease fluid volume, then less drilling fluid is needed and cleanup is faster, but the pipe design becomes more complex
Solution Approach 1:
The patent extracts the function of reducing internal volume from the pipe itself and implements it through a separate liner component. This allows the pipe structure to remain relatively simple while achieving the volume reduction goal. The liner is inserted through the upset ends and positioned within the pipe, reducing the internal diameter and fluid volume without requiring complex modifications to the pipe design.
Data Source
AI summary
A one piece forged fluidic displacement pipe is shown which can be used for horizontal directional drilling operations. The pipe has a metallic outer tube formed into a one piece forged pipe having opposing upset pin and box ends. The pipe also has an internal surface defined by an internal diameter and an external surface and an initially void interior space. A non-metallic inner tube is inserted within the tube void space so that it is enclosed within and generally coaxially aligned with the outer tube. The inner tube is made up of a plurality of lengths of synthetic plastic type material which pass through the internal diameter of the outer pipe and form a semi-solid circular ring of material which occupies the space along the internal diameter of the outer tube between the upset pin and box ends, effectively decreasing the internal diameter and flow path of the outer metal tube.