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Water cross flows appearance preventing with application of self-healing compositions for cementing

UDK: УДК 622.245.42
Key words: : water cross flows, self-healing backfill composition
Authors: D.L. Bakirov, V.A. Burdyga (KogalymNIPIneft Branch of LUKOIL-Engineering LLC in Tyumen, RF, Tyumen), V.N. Kovalev (LUKOIL-West Siberia LLC, RF, Kogalym)

Water cross flows between beds and inter-formational water cross flows behind the casing string are fairly common problem in Western Siberia fields. Self-healing cement compositions are designed to provide durable annulus sealing at wells operation without a repair and insulation work. Self-healing cement stone is generally prepared by the introduction of components, increasing in size under certain conditions, to its composition. The most promising method of self-healing cracks in the cement stone during its contact with water is the introduction of the capillary-active additives of penetrating action to the cement matrix. Self-healing cement compositions, with use of which more than 100 casing strings of wells are cemented, are developed. Field research data have shown that water cross flows are observed in four experimental wells (4% of total number of wells versus 45% at the underlying technology application), and water cross flows between beds are not detected in any of the experimental wells.

References

1. Bakirov D.L., Burdyga V.A., Zemtsov Yu.V., The main directions of problem of

isolation of water inflows in primary cementing wells in bottom water-drive

reservoir (In Russ.), Interval, 2007, no. 8, pp. 49–53.

2. Bakirov D.L., Burdyga V.A., Povyshenie kachestva razobshcheniya plastov

primeneniem tamponazhnykh sostavov so spetsial'nymi svoystvami (Improving

the quality of zonal isolation using grouting compounds with special properties),

Collected papers “Problemy neftegazovogo kompleksa zapadnoy

Sibiri i puti povysheniya ego effektivnosti” (Problems of oil and gas complex of

Western Siberia and the ways to increase of its effectiveness), Proceedings of

scientific and practical conference, Kogalym: Publ. of KogalymNIPIneft',

2006, pp. 408–414.

3. Le Roy-Delage S., Baumgarte C., Thiercelin M., Vidick B., New cement systems

for durable zonal isolation, SPE 59132, 2000.

4. Cavanagh P., Johnson CR., Le Roy-Delage S. et al, Self-healing cement –

novel technology to achieve leak-free wells, SPE 105781, 2007.

5. Gray K.E., Podnos E., Becker E., Finite element studies of near-wellbore region

during cementing operations, SPE 106998, 2007.

6. Yang Y., Lepech M., Li V.C., Self -healing of ECC under cyclic wetting and

drying, Proceedings of International Workshop on Durability of Reinforced

Concrete Under Combined Mechanical and Climatic Loads, Qingdao,

China, Oct. 2005, pp. 231–242.

7. Self-healing of concrete, A new technology for a more sustainable future,

URL: http://www.swieet2007.org.uk/files/Self Healing Concrete.pdf

8. Lukmanov R.R., Bakirov D.L., Burdyga V.A., Trachev S.M., Forecast method

of properties change and the prevention of complications in cementing

wells using cement slurries with microspheres (In Russ.), Stroitel'stvo neftyanykh

i gazovykh skvazhin na sushe i na more, 2005, no. 8, pp. 38–42.

9. Patent no. 2542013 RF, MPK S 09 K 8/467, Cement slurry for cementing oil

and gas wells, Inventors: Bakirov D.L., Burdyga V.A., Nafikov R.K.

Water cross flows between beds and inter-formational water cross flows behind the casing string are fairly common problem in Western Siberia fields. Self-healing cement compositions are designed to provide durable annulus sealing at wells operation without a repair and insulation work. Self-healing cement stone is generally prepared by the introduction of components, increasing in size under certain conditions, to its composition. The most promising method of self-healing cracks in the cement stone during its contact with water is the introduction of the capillary-active additives of penetrating action to the cement matrix. Self-healing cement compositions, with use of which more than 100 casing strings of wells are cemented, are developed. Field research data have shown that water cross flows are observed in four experimental wells (4% of total number of wells versus 45% at the underlying technology application), and water cross flows between beds are not detected in any of the experimental wells.

References

1. Bakirov D.L., Burdyga V.A., Zemtsov Yu.V., The main directions of problem of

isolation of water inflows in primary cementing wells in bottom water-drive

reservoir (In Russ.), Interval, 2007, no. 8, pp. 49–53.

2. Bakirov D.L., Burdyga V.A., Povyshenie kachestva razobshcheniya plastov

primeneniem tamponazhnykh sostavov so spetsial'nymi svoystvami (Improving

the quality of zonal isolation using grouting compounds with special properties),

Collected papers “Problemy neftegazovogo kompleksa zapadnoy

Sibiri i puti povysheniya ego effektivnosti” (Problems of oil and gas complex of

Western Siberia and the ways to increase of its effectiveness), Proceedings of

scientific and practical conference, Kogalym: Publ. of KogalymNIPIneft',

2006, pp. 408–414.

3. Le Roy-Delage S., Baumgarte C., Thiercelin M., Vidick B., New cement systems

for durable zonal isolation, SPE 59132, 2000.

4. Cavanagh P., Johnson CR., Le Roy-Delage S. et al, Self-healing cement –

novel technology to achieve leak-free wells, SPE 105781, 2007.

5. Gray K.E., Podnos E., Becker E., Finite element studies of near-wellbore region

during cementing operations, SPE 106998, 2007.

6. Yang Y., Lepech M., Li V.C., Self -healing of ECC under cyclic wetting and

drying, Proceedings of International Workshop on Durability of Reinforced

Concrete Under Combined Mechanical and Climatic Loads, Qingdao,

China, Oct. 2005, pp. 231–242.

7. Self-healing of concrete, A new technology for a more sustainable future,

URL: http://www.swieet2007.org.uk/files/Self Healing Concrete.pdf

8. Lukmanov R.R., Bakirov D.L., Burdyga V.A., Trachev S.M., Forecast method

of properties change and the prevention of complications in cementing

wells using cement slurries with microspheres (In Russ.), Stroitel'stvo neftyanykh

i gazovykh skvazhin na sushe i na more, 2005, no. 8, pp. 38–42.

9. Patent no. 2542013 RF, MPK S 09 K 8/467, Cement slurry for cementing oil

and gas wells, Inventors: Bakirov D.L., Burdyga V.A., Nafikov R.K.



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