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Should Sand be Excluded from Well Production? (B-FSM002)

Exclusion Methodology focuses on preventing
sand from flowing into the wellbore – then to the surface. However, these
controls come with a cost.

Quadrant 1: Production Limits

Goal: To reduce oil and gas production to
sand free production rate

  • Easy to implement – however
    results in immediate reduction of hydrocarbon flow
  • Sand production map is moving
    target (requires frequent monitoring/adjustment)
  • Use sand monitoring/measurement
    probes and sampling
  • If choke too much then lost
    production, If choke to little then sand in separator
  • CAPEX: Low | OPEX: Low |
    Production: Large Decrease

Quadrant 2: Downhole Equipment
(Completions)

Goal: Prevent sand ingress from reservoir
to wellbore tubulars

  • Use Completion design and technology
  • Widely studied, accepted, and
    available technology
  • May introduce formation/skin
    damage and reduce inflow
  • Does protect mechanical
    stability of well area
  • Eventual mechanical failure
  • Can be very expensive to replace,
    especially in deepwater
  • CAPEX: Medium-High | OPEX: Low
    | Production: Small Decrease

What if sand were allowed to flow instead
of being choked back? It is possible that more oil can be produced with a lower
total well cost.

Bibliography:

  1. Andrews, J., Kjørholt, H., and
    Jøranson, H. 2005. Production Enhancement from Sand Management Philosophy. A
    Case Study from Statfjord and Gulfaks. Paper 94511 presented at the SPE
    6th European Formation Damage Conference, Scheveningen, The Netherlands, 25-27
    May.
  2. Fadillah, P.M., Ahmad, P.H.,
    Ward, M. et al. 2004. Gecko Wells: Bringing Sand to Surface, a Change in Well
    Design Philosophy. Paper 87956 presented at the IADC/SPE Asia Pacific Drilling
    Technology Conference and Exhibition. Kuala Lumpur, Malaysia, 13-15 September.
  3. Geilikman, M.B., Dusseault,
    M.B., and Dullien, F.A. 1994. Fluid Production Enhancement by Exploiting Sand
    Production. Paper 27797 presented at the SPE/DOE Improved Oil Recovery
    Symposium. Tulsa, Oklahoma, 17-20 April.
  4. Guinot, F., Douglass, S.,
    Duncan, J. et al. 2009. Sand Exclusion and Management in the Okwori Subsea Oil
    Field, Nigeria. Paper 106294 in SPE Drilling & Completion 24 (1):
    157-168.
  5. Kaura, J.D., Macrae, A., and
    Mennie, D. 2001. Clean up and Well Testing Operations in High-Rate Gas-Condensate
    Field Result in Improved Sand Management System. Paper 68747 presented at the
    SPE Asia Pacific Oil and Gas Conference and Exhibition. Jakarta, Indonesia,
    17-19 April.
  6. Sanfilippo, F., Brignoli, M.,
    Giacca, D. et al. 1997. Sand Production: From Prediction to Management. Paper
    38185 presented at the SPE European Formation Damage Conference. The Hague,
    Netherlands, 2-3 June.
  7. Selfridge, F., Munday, M.,
    Kvernvold, O. et al. 2003. Safely Improving Production Performance through
    Improved Sand Management. Paper 83979 presented at the Offshore Europe.
    Aberdeen, UK, 2-5 September.
  8. Vaziri, H.H., Lemoine, E.,
    Palmer, I.D. et al. 2000. How Can Sand Production Yield a Several-Fold Increase
    in Productivity: Experimental and Field Data. Paper 63235 presented at the SPE
    Annual Technical Conference and Exhibition. Dallas, TX, 1-4 October.

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