Weatherford International has been granted a patent for a wellbore isolation assembly that includes an outer and inner component, designed to form a retrievable barrier in a wellbore. The associated method outlines steps for running operations using a workstring and an isolation packer to seal against flow. GlobalData’s report on Weatherford International 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 Weatherford International, Oil well fracking was a key innovation area identified from patents. Weatherford International's grant share as of June 2024 was 69%. Grant share is based on the ratio of number of grants to total number of patents.
Wellbore isolation assembly and method for subterranean operations
The patent US12044097B2 outlines a method for conducting operations in a wellbore that extends through a subterranean formation. The process begins with the insertion of a workstring, which includes a tubular, an inner string, and an isolation packer. The method involves positioning the tubular at a designated location, detaching it from the workstring, and subsequently pulling the inner string upwards. The isolation packer is then positioned and fastened to the upper end of the tubular, ensuring a seal against fluid flow. Additional steps include detaching the isolation packer from the inner string and removing the inner string from the wellbore. The method also allows for fluid circulation through the workstring and inner string, with options for cementing the tubular or gravel packing the annulus between the wellbore and sand screens.
Further claims detail the sealing of the annulus between the tubular and the wellbore, which may involve the use of an annular packer or liner hanger. The workstring can also include a shoe with ports for fluid flow. The method provides for the detachment of the tubular from the inner string and the isolation packer, as well as the removal of these components from the wellbore using a retrieval tool. This tool facilitates the uncoupling of the tubular mandrel from the tubular and allows for the unsealing of dump ports in the isolation packer, enabling fluid flow between the packer and the wellbore. Overall, the claims present a comprehensive approach to wellbore operations, emphasizing fluid management and component retrieval.
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