Wellhead Housing Main Channel for Annulus Pressure Management
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Solution Overview
Problem
In subterranean field operations, the accumulation of liquid in the wellbore annulus can lead to rapid pressure increases due to the incompressibility of liquids, posing hazardous situations.
Innovation Solution
A wellhead housing system with a main channel that forms an obtuse angle with the outer surface, allowing tubing to be inserted and removed easily to manage liquid levels and pressure in the annulus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid accumulates in the annulus, then pressure increases rapidly, but this creates hazardous situations
Solution Approach 1:
The system performs preliminary action by providing a pre-configured wellhead housing with integrated main channels that allow for proactive liquid removal from the annulus. The housing structure is designed in advance with specific channel geometries (obtuse angles) that enable easy insertion and removal of tubing for liquid management, preventing hazardous pressure buildup before it occurs rather than reacting to it.
Solution Approach 2:
The system extracts the harmful liquid from the annulus through the wellhead housing structure. The main channels provide direct pathways for removing liquid accumulation that would otherwise cause dangerous pressure increases. By extracting the liquid through dedicated channels with appropriate geometry, the system eliminates the harmful factor (excess liquid/pressure) while maintaining reliable pressure control.
2Productivity
If tubing is inserted through a straight channel, then liquid removal is effective, but insertion and removal become difficult
Solution Approach 1:
The wellhead housing employs curved channel geometry instead of straight channels. The main channels are configured with obtuse angles relative to the outer surface, creating smooth curved pathways that facilitate easy tubing insertion and removal while maintaining effective liquid removal capability. This curvature allows tubing to be guided smoothly through the housing without abrupt directional changes that would impede operation.
Solution Approach 2:
The channel geometry transitions from a simple linear path to a multi-dimensional curved path within the wellhead housing. By utilizing three-dimensional space with obtuse angle configurations, the channels provide both effective liquid removal pathways and ease of tubing manipulation. The spatial arrangement allows tubing to be inserted and removed along curved trajectories rather than requiring direct linear access.
Data Source
AI summary
A wellhead housing of a wellhead assembly can include a body having a top end, a bottom end, and a cavity that traverses its length between the top end and the bottom end. The wellhead housing can also include a main channel that traverses the body from the cavity at a distal end of the main channel to an outer perimeter of the body at a proximal end of the main channel, where the proximal end of the main channel is located closer to the top end of the body compared to the distal end of the main channel, and where the distal end of the main channel is located closer to the bottom end of the body compared to the proximal end of the main channel.