Patent ID: 11952875
Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC E  F | IPC E  F

Claim 16:
17. A method of manufacturing a stage for an electric submersible pump (ESP), the method comprising:
providing tooling for forming an impeller or a diffuser, the impeller or the diffuser comprising:
a blade including a pressure side and a suction side, wherein a height of the pressure side of the blade is different than a height of the suction side of the blade; and
a non-axisymmetric profile, wherein the non-axisymmetric profile extends less than 100% of a Meridional Length from a leading edge to a trailing edge of the blade in a streamwise direction;
forming a sand core about the tooling; and
removing the sand core from the tooling by pulling the sand core with a purely axial movement along a positive Z-axis.