Studying of influence of formation water and drilling fluid filtrate mixing on nuclear magnetic logging spectrum

Authors: V.A. Kolesov (RN-KrasnoyarskNIPIneft LLC, КА, Krasnoyarsk), A.G. Khokholkov (R&D Center Tvergeofizika OAO, RF, Tver), A.V. Chashkov (Naftna Industrija Srbije A.D., Serbia, Novi Sad)

Key words: NMR logging, formation water, drilling fluid filtrate, carbonate reservoirs, Eastern Siberia.

On the core of Rosneft Oil Company’s license areas in Irkutsk Region and Krasnoyarsk Krai there has been performed a wide range of operations for providing petrophysical support of nuclear magnetic logging data interpretation for Vendian and Lower Cambrian carbonate reservoirs, however there is still a number of uncertainties while interpretation of the method. The paper introduces a solution of one of such uncertainties, which is a study of mixture of formation water and drilling fluid filtrate nuclear magnetic resonance properties in the void space of core samples.

References
1. Khamatdinov R.T., Mityushin E.M., Barlyaev V.Yu. et al., Nuclear magnetic tomographic logging (In Russ.), Karotazhnik, 2002, V. 100, pp. 138–171.
2. Coates G.R., Xiao Lizhi, Prammer M.G., NMR logging principles and applications, Houston: Halliburton Energy Services, 1999, 235 p.
3. Filatov D.A., Kolesov V.A., Krasil'nikova N.B., Isaeva V.V., Features of the petrophysical model of carbonate reservoirs at Irkutsk license areas (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2013, no. 10, pp. 42–45.
4. Kiselev V.M., Kolesov V.A., Chashkov A.V., Comprehensive core analysis for carbonate sediments of Ust-Kut horizon by nuclear magnetic resonance
(In Russ.), Karotazhnik, 2014, V. 241, no. 7, pp. 42–51.
5. Kolesov V.A., Kiselev V.M., Nazarov D.V. et al., Calculation of residual water saturation of east siberian reservoirs from nuclear magnetic logging data
(In Russ.), Karotazhnik, 2014, V. 242, no. 8, pp. 50–58.
6. Filatov D.A., Krasil'nikova N.B., Determination of saturartion coefficient in
carbonate reservoirs (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2013,
no. 11, pp. 4–7.
7. Kowalewski J., Maler L., Nuclear spin relaxation in liquids: theory, experiments, and applications, Boca Raton: CRC Press, 2006, 426 p.  

Key words: NMR logging, formation water, drilling fluid filtrate, carbonate reservoirs, Eastern Siberia.

On the core of Rosneft Oil Company’s license areas in Irkutsk Region and Krasnoyarsk Krai there has been performed a wide range of operations for providing petrophysical support of nuclear magnetic logging data interpretation for Vendian and Lower Cambrian carbonate reservoirs, however there is still a number of uncertainties while interpretation of the method. The paper introduces a solution of one of such uncertainties, which is a study of mixture of formation water and drilling fluid filtrate nuclear magnetic resonance properties in the void space of core samples.

References
1. Khamatdinov R.T., Mityushin E.M., Barlyaev V.Yu. et al., Nuclear magnetic tomographic logging (In Russ.), Karotazhnik, 2002, V. 100, pp. 138–171.
2. Coates G.R., Xiao Lizhi, Prammer M.G., NMR logging principles and applications, Houston: Halliburton Energy Services, 1999, 235 p.
3. Filatov D.A., Kolesov V.A., Krasil'nikova N.B., Isaeva V.V., Features of the petrophysical model of carbonate reservoirs at Irkutsk license areas (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2013, no. 10, pp. 42–45.
4. Kiselev V.M., Kolesov V.A., Chashkov A.V., Comprehensive core analysis for carbonate sediments of Ust-Kut horizon by nuclear magnetic resonance
(In Russ.), Karotazhnik, 2014, V. 241, no. 7, pp. 42–51.
5. Kolesov V.A., Kiselev V.M., Nazarov D.V. et al., Calculation of residual water saturation of east siberian reservoirs from nuclear magnetic logging data
(In Russ.), Karotazhnik, 2014, V. 242, no. 8, pp. 50–58.
6. Filatov D.A., Krasil'nikova N.B., Determination of saturartion coefficient in
carbonate reservoirs (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2013,
no. 11, pp. 4–7.
7. Kowalewski J., Maler L., Nuclear spin relaxation in liquids: theory, experiments, and applications, Boca Raton: CRC Press, 2006, 426 p.  


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