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Mitigating fluid pound effects under incomplete pump fillage conditions

  • US 10,458,225 B2
  • Filed: 12/29/2017
  • Issued: 10/29/2019
  • Est. Priority Date: 12/29/2017
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving position data characterizing a position of a plunger over time, the plunger forming part of a rod lift pump system, the position measured by a first sensor, the plunger being configured to travel between a first position and a second position within a barrel within a well, and a distance between the first position and the second position defining a stroke length;

    receiving load data characterizing a load on a rod over time, the load measured by a second sensor, the rod coupled to the plunger;

    receiving velocity data characterizing a velocity of the plunger while the rod lift pump system is operating under a condition of complete pump fillage, wherein a portion of the barrel between the first position and the second position is filled with liquid prior to a downstroke of the plunger;

    correlating, using at least the received load data and position data, the load on the rod and the position of the plunger; and

    displaying, on a graphical interface display space, a visualization of the velocity data simultaneously with a visualization of the correlated load and position.

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