NOV has patented a method for cementing wells using downhole tools to generate pressure pulses and oscillations, ensuring proper cement distribution. The innovation allows for continued tool operation post-cementing, maintaining tubing centralization during curing. GlobalData’s report on NOV gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on NOV, Fall risk prediction was a key innovation area identified from patents. NOV's grant share as of May 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
Downhole tools for generating vibrations during well cementing
A recently granted patent (Publication Number: US12000235B2) discloses a method and system for cementing tubing in downhole applications. The method involves attaching distal and proximal downhole tools in the tubing, each equipped with flow-through passages and vibration tools to generate pressure pulses, lateral oscillations, and axial oscillations while flowing cement. A backflow path is provided to facilitate fluid flow during curing, preventing cement flow between the tools and tubing. Additional features include using Lost Circulation Material (LCM) in the fluid and applying squeeze pressure to the cement during curing. The system comprises similar components with the addition of mechanisms for attaching the tools, a packer to prevent cement flow, and a backflow path bypassing the annular space surrounding the tubing to allow cement setting.
The innovation in this patent lies in the unique method and system for cementing tubing in downhole operations. By utilizing vibration tools and flow-through passages in the distal and proximal downhole tools, the process enables precise control over cement flow and application, enhancing the overall cementing efficiency. The inclusion of a backflow path, LCM in the fluid, and squeeze pressure application further optimize the cementing process, ensuring a secure and reliable tubing cementation. The system's design with extendable anchors, slip-cone assemblies, and packers adds to its versatility and adaptability in various downhole environments. Overall, this patent introduces a comprehensive solution for cementing tubing, addressing key challenges in downhole operations and offering a novel approach to enhance cementing processes in the oil and gas industry.
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