POTENTIALS OF SILICATES IN TREATMENT OF OIL PRODUCING WELLS
Аннотация
By joint application of silicates and polymers, a multifunctional, self- controlling chemical system is formed which works spontaneously even under harsh reservoir conditions, meanwhile the methods remain inexpensive, flexible and adaptable to any production technologies. A concise summary of the technique, its principle and mainly field projects are discussed in the paper.
It was shown that the silicates, combined with polymers offer unique opportunity to cure numerous production/injection problems including water-shut- off, profile correction, gas coning, etc. in oil and gas fields. Between 1980 and 1998 the field projects, comprising more than forty well treatments, yielded substantial additional oil production, life time of wells were extended and the overall profitability of the field was significantly increased, meanwhile environmentally friendly chemicals were used. Therefore, the Hungarian experts are convinced that the polymer/silicate method is reasonable alternative wherever and whenever the application of bulk or surface gelation or deposition is arising.
Библиографические ссылки
>1. Hills, R. V. A.: US Patent 1,421,706 (1922)
2. Baker, W. V.: "Grouting in Geotechnical Engineering", Am. Civil Eng., New York (1982)
3. Robertson, J. O., Oefelein, F. H.: "Plugging Thief Zones in Water Injection Wells", JPT 9:999 (1967)
4. Cole, R. C., Smith, C. W.: "Two Water Control Sealants Systems for Matrix and Channel Plugging", 7th Ann. Convention of Indonesian Pet. Assoc., Jakarta (1978)
5. Cole, R. C., Mody, B., Pace, J.: "Water Control for Enhanced Oil Recovery", European Offshore Conference ’81, (1981)
6. Sparlin, D. D., Hagen, R. W.: "Controlling Water in Producing Operations: Part 4 – Grouting Materials and Techniques", World Oil, 6:149 (1984)
7. Vail, J. G.: "Soluble Silicates", Reinhold Publ. Corp., (1952)
8. Iler, R. K.: "The Colloid Chemistry of Silica and Silicates", Cornell Univ. Press., Ithaca (1955)
9. Iler, R. K.: "The Chemistry of Silica", Wiley-Interscience Publ., New York (1979)
10. Falcone, J. S., ed.: "Soluble Silicates", ACS Symp. Series, ACS, Washington (1982)
11. Krumrine, P. H., Boyce, S. D.: "Profile Modification and Water Control with Silica/ Based Systems", SPE Techn. Paper 13578 (1985)
12. Vinot, B., Schechter, R. S., Lake, L. W.: "Formation on Water/Soluble Silicate Gels by the Hydrolysis of a Diester of Dicarboxylic Acid Solubilized as Microemulsion", SPE Techn. Paper 14236, SPERE 8:391 (1989)
13. Beecroft, W. H., Maier, L. F.: US Patent 808312 (1969)
14. Sandiford B. B.: US Patent 4,069,869 (1978)
15. Lakatos, I., Lakatos-Szabo, J., Munkacsi, I., Tromboczky, S.: "New Possibility in EOR: A Combined Well Treatment Technique", 4th European Symposium on EOR, Proc. pp. 827, Hamburg (1987)
16. Lakatos, I., Lakatos-Szabo, J., Munkacsi, I., Tromboczky, S.: "Potential of Repeated Polymer Well Treatments", SPE Technical Paper 20996 (1990) SPE Production and Facilities, 11:269 (1993)
17. Lakatos, I., Lakatos?Szabo. J., Kosztin, B., Tromboczky, S., Bodola, M., Palasthy, Gy.: "Selective Fluid Shut-Off Treatments at the Algyo Field, Hungary", 9th European Symposium on IOR, Proc., 003, p.1?7., The Hague (1997)
18. Lakatos, I., Kretzschmar, H.-J., Czolbe, P., Bittkow, P., Wassermann, I.: "Polimerinjektionen zur Stimulierung oder Abdichtung von Ol-, Gas- oder Wasserbohrungen", Erdol Erdgas Kohle, 104(1):19 (1988)
19. Lakatos, I., Lakatos-Szabo, J., Tiszai, Gy., Palasthy, Gy., Kosztin, B., Tromboczky, S., Bodola, M., Patterman-Farkas, Gy.: "Application of Silicate-Based Well Treatment Techniques at the Hungarian Oil Fields", SPE Techn. Paper 56739 (1999)
20. Rolfsvag, T. A., Jakobsen, S. R., Lund, T. A. T.: "Thin Gel treatment of an Oil Producer at the Gullfaks Field: Results and Evaluation", SPE Techn. Paper 35548 (1996)
21. Schilling, B.: "Planning and Designing of Gel Treatments", Water Control in Oil and Gas Production, Workshop 60th Ann. EAGE Conf., Leipzig (1998)
22. Stavland, A., Ekrann, S., Hettervik, K. O., Jakobsen, S. R., Schmidt, T., Schilling, B.: "Disproportional Permeability Reduction Is Not a Panacea", SPE Techn. Paper 38195 (1997)
23. Pusch, G.: "Water Control – Outlook for New Perspectives and Developments", Water Control in Oil and Gas Production, Workshop 60th Ann. EAGE Conf., Leipzig (1998)
24. Lakatos, I., Kristof, M., Tromboczky, S., Bodola, M., Munkacsi, I., Lakatos-Szabo, J.: "Restriction of Gas Coning by Polymer/Silicate Treatment", 6th European Symposium on IOR, Proc., p. 395, Stavanger, (1991)
25. Lakatos, I., Lakatos?Szabo, J., Kosztin, B., Palasthy, G.: "Restriction of Gas Coning by a Novel Gel/Foam Technique", SPE Techn. Paper 39654 (1998)
26. Lakatos, I., Bauer, K., Lakatos?Szabo, J., Kretzschmar. H.-J.: "Mass Transport of Heavy Metal Ions and Radon in Gels Used as Sealing Agents in Containment Technologies", Land Contamination and Reclamation, 5(3):165 (1997)
27. Lakatos, I., Bauer, K., Lakatos-Szabo, J., Csige, I., Hakl, J., Kretzschmar, H.-J.: "Diffusion of Radon in Porous Media Saturated with Gels and Emulsions", Transport in Porous Media, 27:171 (1998)
28. Lakatos I., Lakatos-Szabo, J., Kosztin, B.: "Role of Diffusion Mass Transport in Design of Profile Correction Methods Based on Sequential Injection of Gel-Forming Materials", SPE Techn. Paper 39693 (1998)
29. Lakatos, I., Lakatos-Szabo, J.: "Diffusion of Chromium Ions in Polymer/Silicates Gels", Colloids and Surfaces A: Physicochemical and Engineering Aspects, 141:425 (1998).
