Abu Dhabi National Oil has been granted a patent for a well unloading valve for petrochemical well tubing. The valve includes a lock-out sleeve, electrically activated motor module, and check valve for efficient unloading. The method for unloading petrochemical well tubing is also claimed. GlobalData’s report on Abu Dhabi National Oil gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Abu Dhabi National Oil, AI assisted CAD was a key innovation area identified from patents. Abu Dhabi National Oil's grant share as of January 2024 was 19%. Grant share is based on the ratio of number of grants to total number of patents.

Well unloading valve for petrochemical well tubing

Source: United States Patent and Trademark Office (USPTO). Credit: Abu Dhabi National Oil Co

A recently granted patent (Publication Number: US11851988B2) discloses a well unloading valve designed for petrochemical well tubing. The valve includes a flow passage connecting the annulus outside the tubing with the inside of the tubing, a lock-out sleeve that can be closed by hydraulic pressure, an electrically activated motor module for moving a seal to open a hydraulic connection, and a check valve for controlling the flow direction between the annulus and tubing. Additionally, the valve features a bi-directional sealing device, a shearing device for actuation, and a spring for biasing the sealing device to the open position.

The operation method of the well unloading valve involves electrically activating the motor module to move the seal, open the hydraulic connection, apply hydraulic pressure to close the lock-out sleeve, and ultimately close the flow passage. Prior to these steps, predetermined pressure is applied to the tubing, the shearing device is activated, and the sealing device is moved to the open position to allow fluid flow. The method also includes sensing the fluid temperature and elapsed time to initiate the motor module activation. The check valve within the flow passage ensures the proper flow direction, allowing fluid from the annulus into the tubing while blocking flow in the opposite direction. Overall, the patented well unloading valve and its method of operation aim to efficiently control fluid flow in petrochemical well tubing using a combination of hydraulic and electrical mechanisms.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.