BOP Piston Booster and Bonnet Assembly for Quick Ram Changes
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Solution Overview
Problem
Existing BOP piston boosters are limited in size and force due to hydraulic pistons being constrained by bonnet end caps, leading to difficulties in changing out rams, bending issues, and inefficiencies in manual operation.
Innovation Solution
A BOP booster piston and bonnet assembly with solid metal bonnet pistons and hydraulically controlled bonnet pistons, featuring a more compact design with increased diameter and strength, allowing for 5K psi rating and efficient hydraulic operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hydraulic pistons are used to open the bonnet for changing out rams, then the BOP can be opened to access shearing members, but the weight of the booster section causes bending and damage to the hydraulic pistons
Solution Approach 1:
The system divides the bonnet opening function into two independent mechanisms: hydraulic pistons for normal operation and a manual wheel mechanism for heavy load conditions. This segmentation allows each mechanism to be optimized for its specific function, preventing overload of the hydraulic pistons when dealing with heavy booster sections.
Solution Approach 2:
A manual wheel mechanism serves as an intermediary device that can be engaged when hydraulic pistons are insufficient. This intermediary mechanism provides additional mechanical advantage to overcome the weight of heavy booster sections without subjecting the hydraulic pistons to excessive loads that would cause bending or damage.
2Force
If booster piston assemblies are mounted axially to operating pistons between bonnet end caps, then the BOP can provide shearing force, but the diameter is limited which restricts the force that can be produced
Solution Approach 1:
The booster piston assembly transitions from an axial mounting arrangement (constrained by bonnet end cap diameter) to a radial mounting arrangement where the booster piston extends perpendicular to the axis of the operating pistons. This dimensional change allows the booster piston to achieve a larger diameter and produce greater shearing force without being constrained by the bonnet end cap dimensions.
3Ease of operation
If manual bonnet opening mechanisms are used, then the BOP can be opened to change out rams, but it is very difficult and time consuming
Solution Approach 1:
The system provides dynamic adaptability by offering two operational modes: hydraulic activation for normal, time-efficient operation, and manual wheel activation for heavy load conditions. This dynamic design allows the operator to select the appropriate mechanism based on the specific situation, maintaining operational efficiency while accommodating extreme conditions.
Solution Approach 2:
The system changes the operational parameters by switching between hydraulic pressure-driven operation and manual mechanical operation. This parameter change allows the system to adapt to different load conditions, using the high-speed hydraulic system for routine operations and the high-torque manual system for heavy booster sections.
Data Source
AI summary
A high power, compact BOP booster and bonnet assembly for rams and, more particularly. Solid ram change pistons or bonnet pistons are in bonnet end caps that are hydraulically controlled. The bonnet pistons move from either an open position or a closed position to urge the booster and bonnet assembly replacement and installing the BOP shear members.