Con-Slot® Formation Link™ profile wire screens

Wire-wrapped screens without base-pipe are suitable for oil & gas wells — whether vertical, deviated or horizontal.

A key factor affecting the profitability of oil & gas production from unconsolidated sand reservoirs is the ability to achieve effective sand control in production (and injection) wells.

Effective sand control reduces liner failure, simplifies individual well operating problems, protects expensive pumping equipment, increases well efficiency and thus, the well breaks even sooner.

With more and more performance failures being attributed to their use in recent times, it is becoming increasingly clear that gravel packs (whether separately packed or prepacked) are not the answer to achieving sand control in unconsolidated reservoir formations.

Good sand control solves the problem without compromising flow rates. Encumbering the well with flow restrictions such as:

       

  • Cemented casing/perforating
  •    

  • Fracking jobs
  •    

  • Gravel packing
  •    

  • Base pipe screens

& #0133; can easily lead to:

       

  • Increased flow restriction
  •    

  • Increased fluid velocities
  •    

  • Decreased fluid handling
  •    

  • Uncontrollable turbulences
  •    

  • Selective sand production
  •    

  • Plugging
  •    

  • Erosion
  •    

  • Scaling
  •    

  • Corrosion
  •    

  • Early coning in
  •    

  • OWC

Background

       

  • Deep sea well completion costs are very high.
  •    

  • High permeable formations/reservoirs require sand control to postpone water breakthrough
  •    

  • The initial cost of a gravel pack from a semi-sub is ~US$3 million/well.
       

  • If a gravel pack is required after a water breakthrough, the cost is ~US$10 million/well.
  •    

  • The success of a gravel pack in highly permeable high-producing reservoirs is known to be poor
       

  • The typical lifetime of a gravel pack is less than 4 years.
  •    

  • The replacement cost of a gravel pack is ~US$11,500/welll.
  •    

  • Reduction of CAPEX and OPEX costs are essential well profitability.
  •    

  • Uninterrupted production and minimal semi-sub intervention are significant cost factors.

Benefits

       

  • Significant reduction of time/cost of drilling
  •    

  • Reduction in overall completion cost
  •    

  • Earlier production start
  •    

  • Increased well productivity

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