Artificial lift PCM

PCM Design - PCP für horizontale und schräge Bohrungen

PCM expertise in artificial lift, surface transfer and services

DESIGN OF PCP IN DEVIATED WELLS

A rod-driven PCP system installed in deviated/horizontal wells must be designed to handle the interaction between the rod string and tubing that can cause the following failures;

  • High rod torsional loading
  • High contact loads (tubing & rod wear)
  • Rod string fatigue

The following parameters should be considered when designing a PCP in deviated/horizontal wells:

  • Max. Dog Leg Severity (°/100ft) along rod string and at pump
  • Inclination (°) at pump setting depth
  • Rod string type
  • Production conditions

PCM has defined design guidelines which take into account the parameters detailed above for deviated/horizontal wells using our proprietary PCM Design Software. It automatically calculates contact loads and shows the operator where centralizers should be placed.

CASE STORY #1 – HEAVY OIL

Location: South America
Well Type: Horizontal
API°: 8° API
Production : 2500 BFPD
Well Inclination: 90° (70° @pump)
Max DLS (°/100 FT): 9° / 100 FT
Horizontal Drain Depth:  700 m TVD
Casing/Tubing: 9.5/8“ -  4.1/2“
Rod String: 1.1/8“  + PCM Centralizers
Run Life: 24 Months & Running

CASE STORY #2 –MEDIUM OIL

Location: Africa
Well Type: Horizontal / Shallow
API°: 22° API
Production: 200 BFPD
Well Inclination: 55° (35° @pump)
Max DLS (°/100 FT): 14° / 100 FT
Horizontal Drain Depth:  350 m TVD
Casing/Tubing: 7“  - 3.1/2“
Rod String: Hollow Rods 1.9 “  OD
Run Life: 17 Months & Running