Universal Pump Seating Nipple Anchoring Reciprocating and Rotary Pumps
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Solution Overview
Problem
Current pump holddown systems are not compatible with both reciprocating and rotary downhole pumps, requiring the retrieval of the entire tubing string to switch between different types of pumps, which is inefficient and time-consuming.
Innovation Solution
A universal pump seating nipple that can anchor and seal both reciprocating and rotary downhole pumps, featuring a rotational force anchor device, axial force anchor device, and seal device, allowing for interchangeable use without the need to remove the tubing string.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated pump seating nipple is used for each pump type (reciprocating or rotary), then the pump can be securely anchored and sealed, but the tubing string must be retrieved to switch between pump types
Solution Approach 1:
The pump seating nipple is designed with a universal interface that can accommodate both reciprocating and rotary pump types. The nipple includes a body with an internal bore and external threading that accepts both pump types, along with a universal seal assembly that provides sealing for both configurations. This multi-functional design eliminates the need to retrieve the tubing string when switching pump types.
Solution Approach 2:
The pump seating nipple incorporates a movable seal assembly that can dynamically adjust its position and configuration based on the pump type installed. The seal assembly includes components that can be positioned to accommodate the different geometries and sealing requirements of reciprocating versus rotary pumps, providing reliable sealing for both types without requiring a different nipple design.
2Reliability
If the tubing string is retrieved to replace the pump seating nipple for different pump types, then the correct nipple can be installed for each pump type, but the operational efficiency decreases
Solution Approach 1:
The pump seating nipple is designed as a universal component that maintains reliable compatibility with both reciprocating and rotary pump types through its standardized interface and adaptive sealing mechanism. This eliminates the need for nipple replacement when switching pump types, thereby maintaining operational efficiency while ensuring proper compatibility.
Solution Approach 2:
The pump seating nipple is designed as a standalone, modular component that can be independently installed or removed without affecting the rest of the tubing string. This segmentation allows the nipple to be replaced or adjusted without retrieving the entire tubing string, improving productivity while maintaining compatibility.
3Reliability
If separate pump seating nipples are used for reciprocating and rotary pumps, then each pump type can be properly anchored against its specific movement (axial for reciprocating, rotational for rotary), but the system complexity increases
Solution Approach 1:
A single pump seating nipple design provides both axial anchoring (for reciprocating pumps) and rotational anchoring (for rotary pumps) through integrated features. The nipple includes an axial force anchor device with friction surfaces for axial resistance, and a rotational force anchor device with latch members and slots for rotational resistance, eliminating the need for separate nipple types.
Solution Approach 2:
The pump seating nipple combines multiple anchoring functions into a single integrated component. The axial force anchor device and rotational force anchor device are merged within the same nipple body, allowing one nipple to perform both axial and rotational anchoring functions that previously required separate nipple designs.
4Productivity
If a universal pump seating nipple is designed to accommodate both pump types, then pump switching becomes efficient, but the design complexity of the nipple increases
Solution Approach 1:
The universal pump seating nipple is designed as a modular assembly with distinct, separable components: a nipple body providing the basic interface, a seal assembly providing sealing, an axial force anchor device providing axial anchoring, and a rotational force anchor device providing rotational anchoring. This segmentation allows each component to be optimized independently while maintaining overall simplicity.
Solution Approach 2:
The nipple design achieves universality through standardized interfaces and adaptive components that work with both pump types. The seal assembly and anchor devices are designed with universal characteristics that accommodate the different geometries of reciprocating and rotary pumps without requiring complex customization, thereby maintaining design simplicity while enabling efficient pump switching.
Data Source
AI summary
A pump seating nipple is provided for engagement with a downhole pump in order to seal and anchor the downhole pump relative to the pump seating nipple. The pump seating nipple includes a nipple sealing component for coupling with the downhole pump to provide a seal device, a nipple axial force anchoring component for coupling with the downhole pump to provide an axial force anchor device, and a nipple rotational force anchoring component for coupling with the downhole pump to provide a rotational force anchor device.