1887

Abstract

Summary

The characterization of lithofacies along wells is the first step before considering generating geological models. In this paper, a method to improve the well characterization in term of lithofacies is presented. This approach based on the relationship between capillary pressure and saturation associated with each lithofacies allows characterizing the lithofacies automatically along wells in transition zones.

The saturation of fluids depends on the rock lithofacies, the fluid properties, the rock-fluid interactions, and must be calculated in order to satisfy the gravity-capillary equilibrium. From the well log data, the water saturation is assumed to be known. The aim of the method is to identify the capillary pressure curve that satisfies the calculated capillary pressure and the observed water saturation of the cells along the wells. The first step consists of calculating the pressure of each phase in the reservoir. From the pressure of each phase, the capillary pressure Pc is deduced. The lithofacies associated with the capillary pressure curve closest to the point [Sw, Pc] is assigned to the cell.

An application on the Brugge Field is presented.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201903110
2019-11-18
2024-04-19
Loading full text...

Full text loading...

References

  1. Chang, Y., Stordal, A. S. and Valestrand, R.
    [2015]. Facies Parameterization and Estimation for Complex Reservoirs - The Brugge Field. Society of Petroleum Engineers. doi: 10.2118/173872‑MS
    https://doi.org/10.2118/173872-MS [Google Scholar]
  2. Groult, J., Reiss, L. H. and Montadert, L.
    [1966] Reservoir inhomogeneities deduced from outcrop observations and production logging. Journal of Petroleum Technology, 18(07), 883–891.
    [Google Scholar]
  3. Montadert, L.
    [1963] La sédimentologie et l’étude détaillée des hétérogénéités d’un réservoir: application au gisement d’Hassi-Messaoud. Rev. Inst. Franc. Pétrol., Paris, 17, 241–257.
    [Google Scholar]
  4. Peters, L., Arts, R.J., Brouwer, G.K., Geel, C.R., Cullick, S., Lorentzen, R.J., Chen, Y., Dunlop, K.N.B., Vossepoel, F.C., Xu, R., Sarma, P., Alhutali, A.H. and Reynolds, A.C.
    [2010] Results of the Brugge benchmark study for flooding optimization and history matching. SPE Reserv. Evalu. Eng. 13(3), 391–405
    [Google Scholar]
  5. Ravenne, C., Eschard, R., Galli, A., Mathieu, Y., Montadert, L. and Rudkiewicz, J. L.
    [1989] Heterogeneities and geometry of sedimentary bodies in a fluvio-deltaic reservoir. SPE Formation Evaluation, 4(02), 239–246
    [Google Scholar]
  6. Ravenne, C., Galli, A., Beucher, H., Eschard, R. and Guérillot, D.
    [1991] Outcrop studies and geostatistical modelling of a middle Jurassic Brent analogue. In Proceedings of the European Oil and Gas Conference, A Multidisciplinary Approach in Exploration and Production R&D: London, Graham and Trotman (pp. 497–520)
    [Google Scholar]
  7. Tomutsa, L., Jackson, S. R., Szpakiewicz, M. and Palmer, T.
    [1986] Geostatistical characterization and comparison of outcrop and subsurface facies: Shannon shelf sand ridges. In SPE California Regional Meeting. Society of Petroleum Engineers.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201903110
Loading
/content/papers/10.3997/2214-4609.201903110
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error