TechNotes

TechNotes offer in-depth information on selected topics

 

• Pump Card Shapes

  • What downhole problems can be identified by recognizing diagnostic Pump Card shapes? 
  • Why is it sometimes difficult to diagnose downhole problems using measured polished rod surface dynamometer cards?
  • Also available as (PDF: 306 KB / 6 pages)
• Acoustic Survey Analysis
  • Does liquid exist above the pump?
  • At what depth is the top of the liquid column?
  • Does the liquid in the casing annulus restrict production from the well?
  • What is the maximum production rate available from the well?
  • What is the casing-head pressure?
  • Does it restrict production?
  • What is the percentage of liquid in the annular fluid column?
  • Is gas flowing up the annulus? At what rate? What is the gas gravity?
  • Are there any restrictions or anomalies in the annulus above the liquid level?
  • Also available as (PDF: 370 KB / 3 pages)