Rotating Breech Pin Adapter for Wellhead Pressure Control
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Solution Overview
Problem
Existing wellhead pressure control equipment lacks a reliable and secure method to couple wellhead mounted equipment, such as wireline blowout preventers and frac trees, which can lead to instability and potential safety hazards during hydrocarbon production.
Innovation Solution
The adapter system includes a breech pin with rotating breech teeth and a breech lock base assembly featuring fixed retaining rings, allowing for secure alignment and locking of the breech pin within the base assembly, preventing longitudinal movement and ensuring stable coupling of wellhead pressure control equipment to wellhead mounted equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing coupling methods are used to attach wellhead pressure control equipment, then the equipment can be installed, but the connection lacks reliability and security leading to instability
Solution Approach 1:
The breech ring is designed to rotate relative to the breech pin body, transforming a static coupling into a dynamic one that allows for secure locking. The rotation enables the breech teeth to engage with spaces between fixed breech teeth, creating a stable locked position while maintaining the ability to unlock when needed.
Solution Approach 2:
The coupling mechanism is divided into segmented components: the breech pin with rotating breech ring, and the base assembly with fixed retaining ring. Both components feature teeth that segment the circular interface, allowing for precise angular positioning and secure engagement through tooth-to-space alignment.
2Stability of the object's composition
If a secure locking mechanism is implemented, then stability is improved, but the device complexity increases
Solution Approach 1:
The rotating breech ring provides a dynamic locking mechanism that achieves stable coupling through rotational engagement. The simplicity of rotation combined with the tooth-space engagement geometry creates an effective locking system without requiring complex multi-component mechanisms.
Solution Approach 2:
The breech teeth and fixed breech teeth are pre-positioned with specific geometries and spacing relationships. This preliminary configuration ensures that when the breech ring rotates into the locked position, the teeth automatically align with the spaces between fixed teeth, creating secure engagement without requiring additional adjustment mechanisms.
Data Source
AI summary
An adapter for coupling wellhead pressure control equipment to wellhead mounted equipment, includes a breech pin and a breech lock base assembly. The breech pin includes a tubular breech pin body and a rotating breech ring. The rotating breech ring is coupled to and rotatable relative to the breech pin body. The rotating breech ring includes a breech ring body and one or more breech pin teeth extending radially outward from the breech ring body. The breech lock base assembly includes a tubular base assembly body. An upper end of the bore of the base assembly body defines an upper receiver. The breech lock base assembly includes a fixed retaining ring including one or more fixed breech teeth. The fixed breech teeth extend radially inward into the upper receiver. The fixed breech teeth are positioned to correspond with the spaces between the breech pin teeth.