公开(公告)号：US20170268500A1

公开(公告)日：2017-09-21

申请号：US15424452

申请日：2017-02-03

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Omar Al Assad ,  Rogier Sebastiaan Blom, JR. ,  Gary Hughes ,  Justin Edwin Barton ,  Peter Westerkamp

IPC: F04B49/20 ,  E21B47/00 ,  E21B43/12 ,  F04B47/02 ,  F04B51/00

CPC classification number: F04B49/20 ,  E21B43/126 ,  E21B47/0007 ,  E21B47/0008 ,  F04B47/022 ,  F04B47/026 ,  F04B49/065 ,  F04B51/00 ,  F04B53/14 ,  F04B2201/0201 ,  F04B2201/0202 ,  F04B2201/0203 ,  F04B2201/1201 ,  F04B2201/121 ,  F04B2201/1211

Abstract: A controller for operating a rod pumping unit at a pump speed. The controller includes a processor configured to operate a pump piston of the rod pumping unit at a first speed. The processor is further configured to determine a pump fillage level for a pump stroke based on a position signal and a load signal. The processor is further configured to reduce the pump speed to a second speed based on the pump fillage level for the pump stroke.