Baker Hughes has filed a patent for an electric submersible pump (ESP) system that includes a pump and a motor with an elongated cylindrical stator and a rotor. The stator is made up of separable interconnected modular sections, allowing for easier assembly and maintenance. The system aims to improve the efficiency and reliability of downhole systems. GlobalData’s report on Baker Hughes gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Baker Hughes, oil well fracking was a key innovation area identified from patents. Baker Hughes's grant share as of September 2023 was 59%. Grant share is based on the ratio of number of grants to total number of patents.
Modular stator sections for electric submersible pump systems
A recently filed patent (Publication Number: US20230318367A1) describes an electric submersible pump (ESP) system and a downhole motor with improved design and functionality. The ESP system includes a pump and a motor with an elongated cylindrical stator and a concentrically positioned rotor. The stator is made up of separable interconnected modular stator sections, allowing for easy assembly and disassembly of the motor.
Between each pair of adjacent stator sections, there is an interconnect that electrically connects the coils of magnet wire in the stator sections to a power source. This interconnect can be configured in a serial or parallel configuration, depending on the desired electrical connection. The interconnect is made up of connectors that engage when the adjacent stator sections are secured to each other.
Each stator section has a corresponding stator housing with flanges at each end. These flanges secure the stator housing to the adjacent stator section. The flanges also have connectors mounted on them, which engage with the connectors of the adjacent stator section when the flanges are secured together. This ensures a secure electrical connection between the stator sections.
The downhole motor described in the patent also features separable interconnected modular stator sections. These stator sections have connectors that engage with the connectors of the adjacent stator section, allowing for easy assembly and disassembly. The stator of the motor also includes gaps between the stator cores of each pair of adjacent stator sections. Bearings are positioned at these gaps to support the rotor shaft, ensuring smooth rotation of the rotor within the stator.
Overall, this patent introduces an improved design for ESP systems and downhole motors. The use of separable interconnected modular stator sections allows for easier assembly and disassembly, while the interconnects and connectors ensure a secure electrical connection between the stator sections. The inclusion of gaps and bearings in the stator enhances the performance and reliability of the downhole motor. These innovations have the potential to improve the efficiency and lifespan of ESP systems and downhole motors in various applications.