The document presents a root cause analysis of non-producing oil wells, detailing various failures and their associated costs. Key issues identified include equipment failures and operational challenges that lead to production interruptions. The analysis emphasizes the need for understanding mechanical and operational causes to improve reliability and reduce costs.

1. PROACT ® Root Cause Analysis Oil Well Logic Tree Example Reliability Center, Inc. www.Reliability.com

2. Surface Equipment Coupling Joint Cement Strings Perforations Pack Downhole

3. Failure Definition Producing Field An interruption of production at one or more wells

4. Producing Field Opportunity Analysis (OA) Results Significant Few Annual Costs Lead Line Ruptures $777,852 Hole in Tubing $279,938 Lead Line Leaks $203,739 Pumping Unit Belts $169.231 Pumping Unit Brakes $165,337 Downhole Pump Failures $127,050 Electrical Contractors $124,438 Electrical Fuses $113,250 Motor Bearings $105,422 Pumping Unit Slings $64,218

5. Recurring Non-Producing Well Power Failure Tubing Fails Pumping Unit Failure Rod Fails Motor Fails Sub-Surface Pump Fails 80% Non-Producing Well TOP BOX

6. Non-Producing Well Recurring Non-Producing Well Power Failure Tubing Fails Pumping Unit Failure Rod Fails Motor Fails Sub-Surface Pump Fails Above Ground Below Ground HOW CAN?

7. Non-Producing Well Below Ground Operationally Induced Mechanically Induced HOW CAN?

8. Non-Producing Well Below Ground Operationally Induced Mechanical Induced Body Break Box Break Pin Break HOW CAN? HOW CAN?

9. Body Break Erosion Corrosion Fatigue Scale Corrosion Erosion Rod Wear HOW CAN? Non-Producing Well

10. Body Break Erosion Corrosion Fatigue Scale Corrosion Erosion Rod Wear Normal Wear and Tear Premature Failure Physical Root HOW CAN? HOW CAN? Non-Producing Well

11. Incorrect parts for Service Premature Failure Part is Correct for Service Improper Operation HOW CAN? HOW CAN? Non-Producing Well

12. Stretch Rods Bumping Bottom Pump Sticks Pounding Fluid Parafin Buildup Pumping Too Long at a Time Human Roots HOW CAN? HOW CAN? Speed Too Fast Improper Speed Improper Operation Overstress Non-Producing Well

13. Pump Too Big Latent Roots Paradigm Speed Too Fast Eng. Said To Run Maximize Production Need To Lower Fluid Level Lack of Time to Change Speed That’s the Way We Do It WHY? Non-Producing Well