Логин:
Пароль:
Регистрация
Забыли свой пароль?

Laboratory study on the effect of elastic wave treatment on geomechanical and capillary properties of clastic reservoirs

UDK: 622.276.6
DOI: 10.24887/0028-2448-2020-4-54-57
Key words: elastic wave treatment, geomechanical properties, capillary imbibition, clastic rock, rock properties
Authors: E.P. Riabokon (Perm National Research Polytechnic University, RF, Perm)

Capillary imbibition affects the rate of oil inflow to the production well. Geomechanical properties of the rock are one of the factors determining the rate of capillary imbibition. As a result of elastoplastic deformations of the rock during an oil field development, geomechanical properties change that leads to a decrease in a well production rate. Elastic wave treatment of the bottom-hole formation zone can restore the permeability of the rock to the initial value due to changes in geomechanical properties.

The elastic wave treatment of a bottom-hole formation zone is modelled to evaluate the effect on deformations. The deformation in the model is represented by a change in geomechanical properties (compressive strength, tensile strength, elastic modulus, Poisson's ratio). Spontaneous capillary imbibition is used as a flow property. The study is performed on the Perm period sandstone that corresponds to clastic deposits of oil fields in the south of the Perm region. Experiments on static loading on samples of various diameters are carried out using standard equipment. The zones of compaction and elastic deformation are determined. The experimental setup for dynamic loading using a magnetostrictive transducer is designed. Elastic wave treatment of the rock on five modes is studied. Seven frequencies are investigated on each mode. A decrease in the mechanical properties of the rock in the zone of elastic deformation is shown. The effect of elastic wave treatment on flow properties of rocks in the near-wellbore zone of clastic formations is revealed. It is concluded that there is a possibility to increase the permeability of the bottom-hole formation zone and additional oil production during elastic wave treatment in the zone of compaction.

References

1. Gimatudinov Sh.K., Fizika neftyanogo i gazovogo plasta (Physics of the oil and gas reservoir), Moscow: Nedra Publ., 1971, 312 p.

2. Zaytsev M.V., Mikhaylov N.N., Borehole zone effect on well deliverability (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2004, no. 1, pp. 64–66.

3. Dobrynin V.M., Deformatsii i izmeneniya fizicheskikh svoystv kollektorov nefti i gaza (Deformations and changes in the physical properties of oil and gas collectors), Moscow: Nedra Publ., 1970, 239 p.

4. Gadiev S.M., Ispol'zovanie vibratsii v dobyche nefti (Using vibration in oil production), Moscow: Nedra Publ., 1977, 159 p.

5. Kuznetsov O.L., Simkin E.M., Chilingar J., Fizicheskie osnovy vibratsionnogo i akusticheskogo vozdeystviy na neftegazovye plasty (Physical foundations of vibration and acoustic effects on oil and gas reservoirs), Moscow:  Mir Publ., 2001, 258 p.

6. Prachkin V.G., Galyautdinov A.G., Wave technology stimulation of oil (In Russ.),  Neftegazovoe delo, 2015, no. 5, pp. 215–235.

7. Simonov B.F. et al., Vibroseismic effect on oil reservoirs from the Earth's surface (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2000, no. 5, pp. 41–46.

8. Muzipov Kh.N., Savinykh Yu.A., New ultrasound technologies of improving the flow rate of producing wells (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2004, no. 12, pp. 53–54.

9. Karaketov A.V., Substantiation of effectiveness of vibroseismic stimulation on deposit (In Russ.), Neftyanoe khozyaystvo = Oil Industry,  2014, no. 4, pp. 66–69.

10. Khuzin R.R. et al., Development of completion technology based on shock-wave stimulation of near-wellbore zone (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2012, no. 11, pp. 104–107.

11. Dyblenko V.P., Kamalov R.N., Shariffulin R.Ya., Tufanov I.A., Povyshenie produktivnosti i reanimatsiya skvazhin s primeneniem vibrovolnovogo vozdeystviya (Increasing productivity and reanimation of wells using vibrowave impact), Moscow: Nedra-Biznestsentr Publ., 2000, 381 p.

12. Kazakov A.A., The mechanism of overcoming capillary barriers in pores of variable cross section (In Russ.), Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 1993, no. 6, pp. 35–40.

13. Lyadova N.A., Yakovlev Yu.A., Raspopov A.V., Geologiya i razrabotka neftyanykh mestorozhdeniy Permskogo kraya (Geology and development of oil deposits of the Perm region), Moscow: Publ. of VNIIOENG, 2010, 335 p.

14. Mikhaltsevitch V., Lebedev M., Gurevich B., A laboratory study of the elastic and anelastic properties of the sandstone flooded with supercritical CO2 at seismic frequencies, Energy Procedia, 2014, V. 63, pp. 4289–4296.

15. Shchelkachev V.N., Lapuk B.B., Podzemnaya gidravlika (Underground hydraulics), Moscow: Gostoptekhizdat Publ., 1949, 523 p.

Capillary imbibition affects the rate of oil inflow to the production well. Geomechanical properties of the rock are one of the factors determining the rate of capillary imbibition. As a result of elastoplastic deformations of the rock during an oil field development, geomechanical properties change that leads to a decrease in a well production rate. Elastic wave treatment of the bottom-hole formation zone can restore the permeability of the rock to the initial value due to changes in geomechanical properties.

The elastic wave treatment of a bottom-hole formation zone is modelled to evaluate the effect on deformations. The deformation in the model is represented by a change in geomechanical properties (compressive strength, tensile strength, elastic modulus, Poisson's ratio). Spontaneous capillary imbibition is used as a flow property. The study is performed on the Perm period sandstone that corresponds to clastic deposits of oil fields in the south of the Perm region. Experiments on static loading on samples of various diameters are carried out using standard equipment. The zones of compaction and elastic deformation are determined. The experimental setup for dynamic loading using a magnetostrictive transducer is designed. Elastic wave treatment of the rock on five modes is studied. Seven frequencies are investigated on each mode. A decrease in the mechanical properties of the rock in the zone of elastic deformation is shown. The effect of elastic wave treatment on flow properties of rocks in the near-wellbore zone of clastic formations is revealed. It is concluded that there is a possibility to increase the permeability of the bottom-hole formation zone and additional oil production during elastic wave treatment in the zone of compaction.

References

1. Gimatudinov Sh.K., Fizika neftyanogo i gazovogo plasta (Physics of the oil and gas reservoir), Moscow: Nedra Publ., 1971, 312 p.

2. Zaytsev M.V., Mikhaylov N.N., Borehole zone effect on well deliverability (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2004, no. 1, pp. 64–66.

3. Dobrynin V.M., Deformatsii i izmeneniya fizicheskikh svoystv kollektorov nefti i gaza (Deformations and changes in the physical properties of oil and gas collectors), Moscow: Nedra Publ., 1970, 239 p.

4. Gadiev S.M., Ispol'zovanie vibratsii v dobyche nefti (Using vibration in oil production), Moscow: Nedra Publ., 1977, 159 p.

5. Kuznetsov O.L., Simkin E.M., Chilingar J., Fizicheskie osnovy vibratsionnogo i akusticheskogo vozdeystviy na neftegazovye plasty (Physical foundations of vibration and acoustic effects on oil and gas reservoirs), Moscow:  Mir Publ., 2001, 258 p.

6. Prachkin V.G., Galyautdinov A.G., Wave technology stimulation of oil (In Russ.),  Neftegazovoe delo, 2015, no. 5, pp. 215–235.

7. Simonov B.F. et al., Vibroseismic effect on oil reservoirs from the Earth's surface (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2000, no. 5, pp. 41–46.

8. Muzipov Kh.N., Savinykh Yu.A., New ultrasound technologies of improving the flow rate of producing wells (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2004, no. 12, pp. 53–54.

9. Karaketov A.V., Substantiation of effectiveness of vibroseismic stimulation on deposit (In Russ.), Neftyanoe khozyaystvo = Oil Industry,  2014, no. 4, pp. 66–69.

10. Khuzin R.R. et al., Development of completion technology based on shock-wave stimulation of near-wellbore zone (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2012, no. 11, pp. 104–107.

11. Dyblenko V.P., Kamalov R.N., Shariffulin R.Ya., Tufanov I.A., Povyshenie produktivnosti i reanimatsiya skvazhin s primeneniem vibrovolnovogo vozdeystviya (Increasing productivity and reanimation of wells using vibrowave impact), Moscow: Nedra-Biznestsentr Publ., 2000, 381 p.

12. Kazakov A.A., The mechanism of overcoming capillary barriers in pores of variable cross section (In Russ.), Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 1993, no. 6, pp. 35–40.

13. Lyadova N.A., Yakovlev Yu.A., Raspopov A.V., Geologiya i razrabotka neftyanykh mestorozhdeniy Permskogo kraya (Geology and development of oil deposits of the Perm region), Moscow: Publ. of VNIIOENG, 2010, 335 p.

14. Mikhaltsevitch V., Lebedev M., Gurevich B., A laboratory study of the elastic and anelastic properties of the sandstone flooded with supercritical CO2 at seismic frequencies, Energy Procedia, 2014, V. 63, pp. 4289–4296.

15. Shchelkachev V.N., Lapuk B.B., Podzemnaya gidravlika (Underground hydraulics), Moscow: Gostoptekhizdat Publ., 1949, 523 p.


Attention!
To buy the complete text of article (a format - PDF) or to read the material which is in open access only the authorized visitors of the website can. .

Mobile applications

Read our magazine on mobile devices

Загрузить в Google play

Press Releases

01.10.2020
24.09.2020
09.09.2020