RPC. has been granted a patent for a jarring tool designed for subterranean wells. The tool features a longitudinally displaceable piston, fluid chambers, and a flow controller, enabling controlled application of jarring forces through pressure differentials and fluid flow management. GlobalData’s report on RPC gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on RPC, Water gas shift catalysts was a key innovation area identified from patents. RPC's grant share as of June 2024 was 58%. Grant share is based on the ratio of number of grants to total number of patents.
Jarring tool for subterranean well applications
The granted patent US11993994B2 describes a jarring tool designed for use in subterranean wells, featuring a piston that can be longitudinally displaced between two positions. The tool includes a first fluid chamber whose volume decreases as the piston moves, and a first flow controller that regulates fluid flow between this chamber and a second fluid chamber, which increases in volume during piston displacement. A plug seat, secured to the piston, is designed to receive a plug that activates the jarring tool. Additional features include a spring biasing the piston, a valve that opens with piston movement, and various configurations for the plug seat, including multiple collets and integration with a tubular mandrel.
The patent also outlines a method for applying a jarring force to equipment stuck in a well. This involves introducing a plug into the jarring tool, engaging it with the plug seat, and creating a pressure differential that restricts fluid flow. The method details how to build pressure within the tool by controlling the piston’s displacement and subsequently increasing the fluid flow rate to apply the jarring force. Various techniques for increasing flow rate are described, including discharging or eroding the plug, expanding the plug seat, and opening a valve. The method emphasizes the sequential actions necessary to effectively deploy the jarring tool and engage it with stuck equipment, ensuring efficient operation in subterranean environments.
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