Abstract:
A case study is presented, which addresses the origin of H2S in produced gas associated with the oil in Las Heras-Cerro Grande oilfield, Argentina. The possible mechanisms of reservoir souring are analyzed by sulfur isotope ratio analysis. H2S concentration vary between 9 and 453 ppm/vol. The greater concentration of H2S occur where the water cut is greater. The isotopic values suggest a microbial souring mechanism. The first alternative for H2S removal is to treat the produced gas with chemical agents based on triazines and to reduce the amount of sulfate reducing bacteria in the injection water. Other analyzed options were squeeze treatments in producing wells with biocides, oxidants, or sulfide scavengers. One of the most attractive options consisted in using biocompetitive exclusion processes (BCX). The BCX process has clear advantages for effective sulfide suppression as compared to previous biocide treatments. This is an abstract of a paper presented at SPE International Symposium on Oilfield Chemistry (Houston, TX 2/2-4/2005).
Registro:
Documento: |
Conferencia
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Título: | Oilfield reservoir souring during waterflooding: A case study with low sulphate concentration in formation and injection waters |
Autor: | Cavallaro, A.N.; Gracia Martinez, M.E.; Ostera, H.; Panarello, H.; Cordero, R.R. |
Ciudad: | Houston, TX |
Filiación: | SPE, P.O. Box 833836, Richardson, TX 75083-3836, United States Repsol YPF Ingeis, Argentina
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Año: | 2005
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Título revista: | SPE International Symposium on oilfield Chemistry
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Título revista abreviado: | SPE Int. Symp. Oilfield Chem. Proc.
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ISSN: | 10461779
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10461779_v_n_p_Cavallaro |
Referencias:
- Cochrane, W.J., Studies on the thermophilic sulfate reducing bacteria from a souring North Sea oilfield (1998) Paper SPE 18368 Presented at the 1998 SPE European Petroleum Conference, , London, Oct. 17-19
- Frazer, L.C., Bolling, J.D., Hydrogen sulfide forecasting techniques for the Kuparuk River field (1991) Paper SPE 22105 Presented at the 1991 Artic Technology Conference, , Anchorage, Alaska,May 29-31
- Mohammad, I.A.-E., Investigation of H2S migration in the Marian complex (2001) Reservoir Evaluation and Engineering, p. 509. , (Dec.)
- Khatib, Z.I., Reservoir souring analysis of surveys and experience in sour waterfloods (1997) Paper SPE 38795 Presented at the 1997 SPE Annual Technical Conference and Exhibition, , San Antonio, Oct. 5-8
- Poli, M., A non-conventional study for determination of H2S in production gas (2002) The Petroleum Society 2002-297 Presented at the 2002 Annual Technical Meeting of The Petroleum Society, , Calgary, Alberta, Canada, Jun 4-8
- Seto, C.J., Beliveau, D.A., Reservoir souring in the Caroline field (2000) Paper SPE 59778 Presented at the 2000 SPE/CERI Gas Technology Symposium, , Calgary, Alberta, Canada, Apr. 3-5
- Krouse, H.R., Sulphur isotope studies and their role in petroleum exploration (1977) J. Geochem. Explor., 7, pp. 189-211
- Orr, W.L., Geologic and geochemical controls on the distribution of hydrogen sulfide in natural gas (1975) Advances in Organic Geochemistry" Presented at the 1975, 7th Int. Meet. on Organic Geochemistry, , Madrid, Sept. 16-19
- McLenehan, K., Dennis, M., Hitzman, D., Recent successes: Green technology for H2S elimination and increased oil recovery (2004) The Petroleum Society 2004-173 Presented at the 2004 Annual Technical Meeting of The Petroleum Society, , Calgary, Alberta, Canada, Jun. 8-10
Citas:
---------- APA ----------
Cavallaro, A.N., Gracia Martinez, M.E., Ostera, H., Panarello, H. & Cordero, R.R.
(2005)
. Oilfield reservoir souring during waterflooding: A case study with low sulphate concentration in formation and injection waters. SPE International Symposium on oilfield Chemistry.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10461779_v_n_p_Cavallaro [ ]
---------- CHICAGO ----------
Cavallaro, A.N., Gracia Martinez, M.E., Ostera, H., Panarello, H., Cordero, R.R.
"Oilfield reservoir souring during waterflooding: A case study with low sulphate concentration in formation and injection waters"
. SPE International Symposium on oilfield Chemistry
(2005).
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10461779_v_n_p_Cavallaro [ ]
---------- MLA ----------
Cavallaro, A.N., Gracia Martinez, M.E., Ostera, H., Panarello, H., Cordero, R.R.
"Oilfield reservoir souring during waterflooding: A case study with low sulphate concentration in formation and injection waters"
. SPE International Symposium on oilfield Chemistry, 2005.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10461779_v_n_p_Cavallaro [ ]
---------- VANCOUVER ----------
Cavallaro, A.N., Gracia Martinez, M.E., Ostera, H., Panarello, H., Cordero, R.R. Oilfield reservoir souring during waterflooding: A case study with low sulphate concentration in formation and injection waters. SPE Int. Symp. Oilfield Chem. Proc. 2005.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10461779_v_n_p_Cavallaro [ ]