Window Mill Whipstock Connection System
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Solution Overview
Problem
The existing systems for joining a window mill to a whipstock in the drilling and completion industry are inefficient and time-consuming due to the difficulty in aligning and connecting the shear bolt at the rig floor.
Innovation Solution
A window cutting system that includes a whipstock connector with an inner surface having projections and a window mill with a body featuring a connector member, a tip portion, recesses, axial, and radial passages, where a pin is arranged in the radial passage to selectively extend into the recess, allowing for efficient connection and disconnection using fluid force adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a shear bolt connection system is used to join the window mill to the whipstock, then the connection strength is sufficient, but the alignment and connection process becomes difficult and time-consuming
Solution Approach 1:
The connection system is divided into separate components: a whipstock connector with projection, a window mill with recess, and a pin element. These segmented parts can be independently positioned and connected, eliminating the need for complex alignment procedures while maintaining connection strength through the pin insertion mechanism.
Solution Approach 2:
The pin acts as an intermediary element between the whipstock connector and window mill. This mediator component simplifies the connection process by providing a straightforward insertion path through aligned passages, replacing the complex shear bolt alignment procedure while maintaining adequate connection strength.
2Manufacturing precision
If traditional alignment methods are used to position the threaded hole and lug hole, then accurate alignment is achieved, but the process becomes difficult and time-consuming
Solution Approach 1:
The alignment process is segmented into simple positioning steps rather than requiring precise simultaneous alignment of multiple features. The projection-recess-pin sequence allows operators to position components in stages, dramatically improving ease of operation while maintaining sufficient alignment precision for functional connection.
Solution Approach 2:
Instead of aligning holes and inserting bolts from the outside in, the system uses a projection that protrudes outward, a recess that receives it, and a pin that inserts through passages. This inverted approach simplifies the operational sequence and reduces alignment complexity while achieving the necessary precision.
3Reliability
If the window mill and whipstock are connected using conventional methods, then a secure connection is achieved, but the process requires complex alignment procedures at the rig floor
Solution Approach 1:
The connection system is segmented into distinct functional elements (connector, mill, pin) with simple geometric features (projection, recess, passages). This segmentation reduces the overall system complexity while maintaining connection reliability through the straightforward pin insertion mechanism that provides secure mechanical attachment.
Solution Approach 2:
The pin serves as an intermediary connection element that simplifies the interface between the whipstock connector and window mill. This mediator reduces device complexity by replacing complex alignment mechanisms with a simple insertion-based connection that maintains reliable mechanical attachment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables quick and efficient connection and disconnection of the window mill to the whipstock connector, reducing the torque required for operation and simplifying the process, thereby increasing efficiency at the rig floor.
Implementation Method 1
a pin arranged in the radial passage and selectively extending into the recess
Implementation Method 2
adjusting a fluid force applied to the window mill
Data Source
AI summary
A window cutting system includes a whipstock connector including an inner surface having at least one projection. A window mill is connected to the whipstock connector. The window mill includes a body having a connector member, a tip portion, a recess formed on an outer surface of the body, an axial passage extending from the connector member toward the tip portion and a radial passage extending outwardly from the axial passage. A pin is arranged in the radial passage and selectively extending into the recess.