Top Drive Pipe Spinner Using Passive Weight for Casing
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Solution Overview
Problem
Current methods for running casing in drilling operations require specialized crews and external energy sources, leading to inefficiencies and safety concerns, with no tools available that can maintain pipe integrity and operate independently without energy inputs.
Innovation Solution
The Top Drive Pipe Spinner (TDPS) employs a top drive connection, inverted slips, release weight, and a fill tube with fluid release valve to grip and rotate pipes externally, using passive weight for release and filling, eliminating the need for external energy and reducing maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional power tong methods are used to run casing, then casing can be installed with established equipment, but specialized crews are required and operation efficiency is reduced
Solution Approach 1:
The top drive system is adapted to perform multiple functions including casing running, gripping, rotating, and releasing operations that previously required specialized power tong equipment and crews. The top drive quill acts as both a drilling tool and a casing handling device, eliminating the need for separate specialized crews.
Solution Approach 2:
The system uses the weight of the top drive itself to activate the gripping mechanism through gravity, eliminating the need for external energy sources or additional power sources. The top drive automatically grips and releases casing sections through its own weight and movement.
2Reliability
If power tongs are used for casing installation, then existing equipment can be utilized, but external energy sources are required and safety concerns arise
Solution Approach 1:
The top drive system uses its own weight and gravitational force to activate the gripping mechanism, eliminating dependence on external energy sources such as hydraulic power tongs. This self-powered mechanism reduces safety concerns associated with external energy systems and improves operational reliability.
3Productivity
If traditional casing running methods are employed, then pipe segments can be mated between sequential segments, but the process is time-consuming and requires hard labor
Solution Approach 1:
The manual mechanical operations of power tongs are replaced with an automated top drive system that uses gravitational force and controlled movement to grip, rotate, and set casing sections. This substitution eliminates hard labor and significantly increases operating speed.
Solution Approach 2:
The system dynamically controls the gripping and releasing actions through controlled movement of the top drive, allowing rapid engagement and disengagement of casing sections. The dynamic nature of the system enables fast operation compared to static manual methods.
4Extent of automation
If top drive technology is used for casing running, then automation and safety are improved, but the gripping mechanism complexity increases
Solution Approach 1:
The system uses the weight of the top drive as a counterweight to activate the gripping mechanism. This clever use of existing mass simplifies the automation mechanism by eliminating the need for separate actuators or power sources, reducing overall system complexity while maintaining high automation.
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 TDPS enables efficient and safe running of casing with reduced personnel requirements, maintaining pipe integrity and allowing continuous operation for over 300,000 feet without maintenance, addressing the limitations of existing technologies.
Implementation Method 1
the top drive spins the TDPS and compresses the unit onto the pipe
Implementation Method 2
The casing tongs of the TDPS use passive release weight to release the pipe from the TDPS
Data Source
AI summary
The present invention relates generally to a Top Drive Pipe Spinner (TDPS). The TDPS is a tool that allows for the setting of casing without a specialized crew or any additional power source. By employing the weight of the existing top drive to set slips below the casing collar and on the pipe, the TDPS allows one casing to be threaded onto the next in a timely and efficient manner. The casing tongs of the TDPS use passive release weight to release the casing collar from the casing to allow for the successive insertion of another casing section. The top drive spins the TDPS and compresses the unit onto the casing, then lifts the unit and releases the casing when desired.