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Development of a polymer-based drilling mud to preserve reservoir properties in the bottom hole formation zone

UDK: 622.244.442.063
DOI: 10.24887/0028-2448-2017-7-46-49
Key words: drilling, drilling mud, permeability, biopolymer
Authors: E.E. Pavlovskaia, PhD (University of Aberdeen), V.V. Poplygin, PhD, A.A. Kunitskikh, PhD, N.I. Krysin, DSc (Perm National Research Polytechnic University)

The paper discusses the positive and negative aspects of the water and oil-based process fluids (drilling muds) which are used for wells construction. Nowadays, clay based drilling muds are mainly used, which lead to significant clogging of the bottom hole formation zone and reducing of its permeability. In this work, polymer based drilling muds are designed based on the laboratory studies, where different xanthan biopolymer based mud compounds vary according to the type and amount of filtration reducers, clay swelling inhibitor, surfactant and pH regulator. The performed analysis demonstrates that the best composition of the drilling mud with polymer concentration 0.2% should be recommended for well drilling. The proposed drilling mud contains easily breakable components and has low values of the filtration indicator and technologically necessary structural and rheological properties, which allows maintaining the permeability of the productive reservoirs filter and reducing the energy required for the movement of fluids. Developed drilling mud has sufficiently high lubricating and hydrophobizating properties that prevent deep penetration of flushing fluid filtrate into the reservoir and eliminate the formation of stable water-oil emulsions in the bottom hole formation zone, and they also improve the drill bit working conditions on the bottom of the well, and provide the free passage of the drilling tool and be preventive measures for sticking of the drill string.

References

1. Chang D., Cai J., Yue Y., Yang X., A water base mud for shale gas horizontal well, Drilling Fluid and Completion Fluid, 2015, V. 32, Issue 2, pp. 47-51.

2. Nifontov Yu. A., Kleshchenko I. I., Telkov A. P. et al., Remont neftyanykh i gazovykh skvazhin (Repair oil and gas wells): edited by Nifontov Yu. A., St. Petersburg: Professional Publ., 2007, 913 p.

3. Ryabokon' S.A., Tekhnologicheskie zhidkosti dlya zakanchivaniya i remonta skvazhin (Process liquid for completion and repair of wells), Krasnodar: Publ. of OAO NPO «Burenie», 2009, 337 p.

4. Fereidounpour A., Vatani A., Designing a Polyacrylate drilling fluid system to improve wellbore stability in hydrate bearing sediments, Journal of Natural Gas Science and Engineering, 2015, V. 26, pp. 921-926.

5. Usanov N.G. et al., Otsenka biorazlagaemosti krakhmal'nykh reagentov, ispol'zuemykh pri burenii skvazhin i puti povysheniya ikh biostoykosti (Evaluation of biodegradability of starch reagents used in the drilling of wells and ways to increase their biostability), Proceedings of BashNIPIneft, Ufa, 2003, V. 3, pp. 176–184.

6. Dvoynikov M.V., Nutskova M.V., Kuchin V.N., Analysis and justification of selection of fluids to be used for water shut-off treatment during well completion, Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2017, V.16, no.1, pp.33–39, DOI: 10.15593/2224-9923/2017.1.4.

7. Nikolaev N.I., Liu Kh., Kozhevnikov E.V., Study of influence of polymer spacers on bond strength between cement and rock (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2016, V.15, no.18, pp. 16-22, DOI: 10.15593/2224-9923/2016.18.2

8. Andreson R.K., Gilvanova E.A., Usanov N.G., Telin A., Biodestruction of polymeric reagents used for enhanced oil recovery (In Russ.), Vestnik inzhiniringovogo tsentra YuKOS = Bulletin Yukos Engineering Center, 2002, no. 4, pp. 37-40.

9. Andreson B.A., Andreson R.K., Gilvanova E.A., Usanov N.G., Aseptic biodestruction of polysacharide reagents, used at wells drilling (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2004, no. 6, pp. 64–67.

10. Melton L.D., Mindt L, Rees D.A., Sanderson J., Covalent structure of the extracellular polysaccharide from Xanthomonas campestris: evidence from partial hydrolysis studies, Carbon. Res., 1976, V. 46, pp. 245-254.

11. Janson P.E., Kenne Z., Zindber B., Structure of the extracellular polysaccharide from Xanthamonas campestris, Carohydr. Res., 1975, V. 45, pp. 275 - 282.

12. Nikolaev N.I., Leusheva E.L., Theoretical and experimental investigation of hard rock drilling efficiency (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2015, no. 15, pp. 38-47, DOI: 10.15593/2224-9923/2015.15.5

13. Nikolaev N.I., Leusheva E.L., Analysis of methods of rock softening and techniques of surfactant selection to improve drilling operations (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe deloВ  = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2014, no. 12, pp. 12–21, DOI: 10.15593/2224-9923/2014.12.2.

14. Iakovlev A.A., Turitsyna M.V., Kuznetsov A.S., Research into effects of certain reagents on foam destruction and prevention of foam-formation in drill fluids (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2015, no. 15, pp. 48–56, DOI: 10.15593/2224-9923/2015.15.6

The paper discusses the positive and negative aspects of the water and oil-based process fluids (drilling muds) which are used for wells construction. Nowadays, clay based drilling muds are mainly used, which lead to significant clogging of the bottom hole formation zone and reducing of its permeability. In this work, polymer based drilling muds are designed based on the laboratory studies, where different xanthan biopolymer based mud compounds vary according to the type and amount of filtration reducers, clay swelling inhibitor, surfactant and pH regulator. The performed analysis demonstrates that the best composition of the drilling mud with polymer concentration 0.2% should be recommended for well drilling. The proposed drilling mud contains easily breakable components and has low values of the filtration indicator and technologically necessary structural and rheological properties, which allows maintaining the permeability of the productive reservoirs filter and reducing the energy required for the movement of fluids. Developed drilling mud has sufficiently high lubricating and hydrophobizating properties that prevent deep penetration of flushing fluid filtrate into the reservoir and eliminate the formation of stable water-oil emulsions in the bottom hole formation zone, and they also improve the drill bit working conditions on the bottom of the well, and provide the free passage of the drilling tool and be preventive measures for sticking of the drill string.

References

1. Chang D., Cai J., Yue Y., Yang X., A water base mud for shale gas horizontal well, Drilling Fluid and Completion Fluid, 2015, V. 32, Issue 2, pp. 47-51.

2. Nifontov Yu. A., Kleshchenko I. I., Telkov A. P. et al., Remont neftyanykh i gazovykh skvazhin (Repair oil and gas wells): edited by Nifontov Yu. A., St. Petersburg: Professional Publ., 2007, 913 p.

3. Ryabokon' S.A., Tekhnologicheskie zhidkosti dlya zakanchivaniya i remonta skvazhin (Process liquid for completion and repair of wells), Krasnodar: Publ. of OAO NPO «Burenie», 2009, 337 p.

4. Fereidounpour A., Vatani A., Designing a Polyacrylate drilling fluid system to improve wellbore stability in hydrate bearing sediments, Journal of Natural Gas Science and Engineering, 2015, V. 26, pp. 921-926.

5. Usanov N.G. et al., Otsenka biorazlagaemosti krakhmal'nykh reagentov, ispol'zuemykh pri burenii skvazhin i puti povysheniya ikh biostoykosti (Evaluation of biodegradability of starch reagents used in the drilling of wells and ways to increase their biostability), Proceedings of BashNIPIneft, Ufa, 2003, V. 3, pp. 176–184.

6. Dvoynikov M.V., Nutskova M.V., Kuchin V.N., Analysis and justification of selection of fluids to be used for water shut-off treatment during well completion, Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2017, V.16, no.1, pp.33–39, DOI: 10.15593/2224-9923/2017.1.4.

7. Nikolaev N.I., Liu Kh., Kozhevnikov E.V., Study of influence of polymer spacers on bond strength between cement and rock (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2016, V.15, no.18, pp. 16-22, DOI: 10.15593/2224-9923/2016.18.2

8. Andreson R.K., Gilvanova E.A., Usanov N.G., Telin A., Biodestruction of polymeric reagents used for enhanced oil recovery (In Russ.), Vestnik inzhiniringovogo tsentra YuKOS = Bulletin Yukos Engineering Center, 2002, no. 4, pp. 37-40.

9. Andreson B.A., Andreson R.K., Gilvanova E.A., Usanov N.G., Aseptic biodestruction of polysacharide reagents, used at wells drilling (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2004, no. 6, pp. 64–67.

10. Melton L.D., Mindt L, Rees D.A., Sanderson J., Covalent structure of the extracellular polysaccharide from Xanthomonas campestris: evidence from partial hydrolysis studies, Carbon. Res., 1976, V. 46, pp. 245-254.

11. Janson P.E., Kenne Z., Zindber B., Structure of the extracellular polysaccharide from Xanthamonas campestris, Carohydr. Res., 1975, V. 45, pp. 275 - 282.

12. Nikolaev N.I., Leusheva E.L., Theoretical and experimental investigation of hard rock drilling efficiency (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2015, no. 15, pp. 38-47, DOI: 10.15593/2224-9923/2015.15.5

13. Nikolaev N.I., Leusheva E.L., Analysis of methods of rock softening and techniques of surfactant selection to improve drilling operations (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe deloВ  = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2014, no. 12, pp. 12–21, DOI: 10.15593/2224-9923/2014.12.2.

14. Iakovlev A.A., Turitsyna M.V., Kuznetsov A.S., Research into effects of certain reagents on foam destruction and prevention of foam-formation in drill fluids (In Russ.), Vestnik Permskogo natsional'nogo issledovatel'skogo politekhnicheskogo universiteta. Geologiya. Neftegazovoe i gornoe delo = Bulletin of PNRPU. Geology. Oil & Gas Engineering & Mining, 2015, no. 15, pp. 48–56, DOI: 10.15593/2224-9923/2015.15.6


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