Insert Safety Valve with Disconnectable Release Sub
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Solution Overview
Problem
The existing systems face difficulties in manipulating and inserting safety valves through thousands of feet of wellbore, making it cumbersome to control fluid flow and prevent uncontrolled release of formation fluids, especially when tools need to be positioned below existing safety valves.
Innovation Solution
An insert safety valve system with a valve body, a central passage, and a radially outward flow path, coupled with a release sub and a connector member, allows for the support of downhole tools and enables the conduit to move through the valve, facilitating easier tool deployment and fluid control by landing the valve on a specific area and disconnecting the release sub to shift the conduit downhole.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an insert safety valve is carried by the conduit to a desired depth and set, then the safety valve can prevent uncontrolled release of formation fluids, but manipulating the insert safety valve through thousands of feet of wellbore becomes awkward and difficult
Solution Approach 1:
The system divides the safety valve assembly into separable components: the insert safety valve body and the release sub. The connector member allows these components to be selectively connected and disconnected, enabling the release sub to be separated and retrieved through the conduit while the insert safety valve remains set in the wellbore. This segmentation resolves the contradiction by allowing easy manipulation of the release sub while maintaining the reliability of the set insert safety valve.
Solution Approach 2:
The connector member provides dynamic connectivity, allowing the release sub to be connected to the insert safety valve during deployment and then disconnected for retrieval. This dynamic connection enables the system to transition from a fixed configuration during operation to a separable configuration for manipulation and retrieval, resolving the ease of operation issue without compromising safety valve reliability.
2Reliability
If the insert safety valve is set in the wellbore, then it can control fluid flow, but tool insertion and manipulation below the valve becomes difficult
Solution Approach 1:
By separating the release sub from the insert safety valve body through the disconnectable connector member, the system allows tools to be attached to the released sub and manipulated through the conduit. This segmentation enables tool insertion and manipulation below the set insert safety valve while maintaining the valve's fluid flow control function.
Solution Approach 2:
The release sub acts as an intermediary component that can be disconnected from the insert safety valve. Tools can be attached to the release sub and manipulated through the conduit, serving as a mediator that enables tool insertion and manipulation without interfering with the set insert safety valve's position or function.
3Stability of the object's composition
If the release sub remains connected to the valve body, then the valve structure is complete, but the conduit cannot be lifted to disconnect and retrieve the release sub
Solution Approach 1:
The connector member provides dynamic connectivity, allowing the system to maintain structural integrity during operation and then be disconnected for retrieval. The connector can be selectively engaged to maintain structural stability and selectively disengaged to enable retrieval, resolving the contradiction between structural completeness and ease of retrieval.
Solution Approach 2:
The connector member is designed with features that allow preliminary engagement and disengagement actions. The conduit can be lifted to initiate disengagement of the connector member, allowing the release sub to be retrieved while maintaining structural integrity during normal operation. This preliminary action capability resolves the contradiction by enabling controlled separation when needed.
Data Source
AI summary
An insert safety valve system includes a valve body including a valve member. The valve body includes a central passage and a flow path arranged radially outwardly of the central passage. A release sub is coupled to the valve body. The release sub is configured and disposed to support a downhole tool. A connector member selectively couples the release sub and the valve body.