Multi-Port Ball Valve for Precise Downhole Fluid Routing
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Solution Overview
Problem
Existing technologies face challenges in efficiently and reliably conveying fluids between multiple downhole locations during drilling operations, such as those involving formation fluids, drilling fluids, and other substances, requiring improved control mechanisms.
Innovation Solution
A multi-port ball valve apparatus is introduced, featuring a valve body with multiple ports, a rotatable ball with flow bores, and actuator-controlled valve seats to selectively communicate fluid flow between various downhole locations, allowing for precise control of fluid flow through mechanical, electro-mechanical, or autonomous means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-port ball valve is used to control fluid flow between multiple downhole locations, then fluid control versatility is improved, but device complexity increases
Solution Approach 1:
The ball valve is designed with multiple ports (inlet, outlet, and lateral ports) and a ball with flow bores that can be positioned to connect different ports, enabling a single device to control fluid flow between multiple downhole locations. This multi-functional design allows one valve to replace what would otherwise require multiple separate valves, achieving versatility while managing complexity.
Solution Approach 2:
The valve body is segmented into multiple ports and the ball is designed with specific flow bore configurations that can be independently positioned. This segmentation allows different flow paths to be controlled separately while using a single integrated valve body, enabling versatile fluid control without proportionally increasing overall device complexity.
2Reliability
If a ball valve with multiple valve seats and closure member is used to ensure reliable sealing, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
Multiple valve seats are integrated into a single valve body structure, and the closure member is designed to simultaneously engage with all valve seats. This merging of multiple sealing functions into one integrated component achieves reliable sealing across multiple ports without requiring separate actuation mechanisms for each seat, thereby improving reliability while controlling complexity.
Solution Approach 2:
The closure member is designed to automatically engage and seal against all valve seats simultaneously when actuated. This self-sealing mechanism ensures reliable sealing without requiring complex external actuation systems for each individual seat, achieving high reliability with minimal additional complexity.
3Measurement precision
If an actuator is added to control the ball position for selective fluid communication, then flow control precision is improved, but device complexity increases
Solution Approach 1:
An actuator is introduced as an intermediary component to control the ball's rotational position, enabling precise selection of which ports are in fluid communication. The actuator translates control signals into specific ball orientations, achieving precise flow control while keeping the overall system manageable through a dedicated control interface rather than complex manual operation.
Data Source
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Figure 3A
AI summary
An apparatus for controlling fluid flow in a wellbore may include a valve (100) disposed along a drill string (22). The valve includes a valve body (102) having an internal chamber (114), a plurality of ports (104, 106, 108) formed in the valve body, a ball (122) disposed in the internal chamber, and an actuator (150) operatively connected to the ball. The ball includes at least one flow bore (126). The actuator shifts the ball into at least a first position wherein the flow bore is in fluid communication with at least two of the plurality of ports, and a second position wherein the flow bore is isolated from at least one of the plurality of ports. A related method includes conveying a drill string having the above-described valve along the wellbore and controlling a flow of fluid by shifting the ball using the actuator.