21

This article presents an analysis of maintaining wellbore stability, preventing packoff formation, stuck pipe incidents, and drilling fluid losses. A technology aimed at ensuring successful
and high-quality trouble-free well drilling is analyzed and recommended. Based on data obtained
from the Surkhandarya Basin fields, many wells were not drilled to the designed depth. Geophysical
data from studied fields indicate that pore pressure retained in clay formations causes wellbore
instability. These data also help to identify zones prone to collapse; however, the direct measurement
of pore pressure in such formations remains impossible. This research was primarily conducted in
the Ustyurt region, one of the rapidly developing oil and gas prospective areas of the Republic of
Uzbekistan. Over the past 60 years, more than twenty gas and gas condensate fields have been
discovered in Jurassic deposits regionally traced in this area. The presented analysis indicates that
developing an effective technology to prevent geological complications during drilling operations is
a pressing issue.
 

  • Web Address
  • DOI https://doi.org/10.59048/2181-1180.1705
  • Date of creation in the UzSCI system 19-09-2025
  • Read count 21
  • Date of publication 19-09-2025
  • Main LanguageIngliz
  • Pages21-25
English

This article presents an analysis of maintaining wellbore stability, preventing packoff formation, stuck pipe incidents, and drilling fluid losses. A technology aimed at ensuring successful
and high-quality trouble-free well drilling is analyzed and recommended. Based on data obtained
from the Surkhandarya Basin fields, many wells were not drilled to the designed depth. Geophysical
data from studied fields indicate that pore pressure retained in clay formations causes wellbore
instability. These data also help to identify zones prone to collapse; however, the direct measurement
of pore pressure in such formations remains impossible. This research was primarily conducted in
the Ustyurt region, one of the rapidly developing oil and gas prospective areas of the Republic of
Uzbekistan. Over the past 60 years, more than twenty gas and gas condensate fields have been
discovered in Jurassic deposits regionally traced in this area. The presented analysis indicates that
developing an effective technology to prevent geological complications during drilling operations is
a pressing issue.
 

№ Name of reference
1 1. Bulatov A.I. Drilling of Oil and Gas Wells. – Krasnodar, 2015. – P. 304–344. (in Russian) 2. Vinnichenko V.M., Goncharov A.B., Maksimenko N.N. Prevention and Elimination of Complications and Accidents during Drilling of Exploration Wells. – Moscow: Nedra, 1991. – 248 p. (in Russian) 3. Mirsaatova Sh.Kh., Nuritdinov Zh.F., Komilov T.O., Akramov B.S. Investigation of the process of complications associated with the discharge of washing fluids into Paleogene sediments // Proc. XIV Int. Scientific Conference “Nadir Readings”. – Atyrau (Kazakhstan), Feb. 25, 2022. – Atyrau, 2022. – P. 71–76. (in Russian) 4. Mirsaatova Sh.Kh., Rakhimov K.A., Akhmedov Sh.K. The effects of the new UMS-1 reagent on the properties of a normal washing liquid // ScientificPractical Conf. “Educational and Development Cluster in Oil and Gas”. – Karshi, 2023. – P. 560–562. (in Russian)
2 1. Bulatov A.I. Drilling of Oil and Gas Wells. – Krasnodar, 2015. – P. 304–344. (in Russian) 2. Vinnichenko V.M., Goncharov A.B., Maksimenko N.N. Prevention and Elimination of Complications and Accidents during Drilling of Exploration Wells. – Moscow: Nedra, 1991. – 248 p. (in Russian) 3. Mirsaatova Sh.Kh., Nuritdinov Zh.F., Komilov T.O., Akramov B.S. Investigation of the process of complications associated with the discharge of washing fluids into Paleogene sediments // Proc. XIV Int. Scientific Conference “Nadir Readings”. – Atyrau (Kazakhstan), Feb. 25, 2022. – Atyrau, 2022. – P. 71–76. (in Russian) 4. Mirsaatova Sh.Kh., Rakhimov K.A., Akhmedov Sh.K. The effects of the new UMS-1 reagent on the properties of a normal washing liquid // ScientificPractical Conf. “Educational and Development Cluster in Oil and Gas”. – Karshi, 2023. – P. 560–562. (in Russian)
3 8. Umudov Sh.Kh., Akramov B.Sh., Rakhimov K.A., Nuriddinov Zh.F., Mirsaatova Sh.Kh. Polymer grouting mixtures to prevent drilling mud from leaving sediments with high filtration properties // Modern GEOLOGICAL ENGINERING Technical science and innovation. №2/2025 25 Technologies: Problems and Development Trends. – Petrozavodsk: ICNP “New Science”, 2021. – P. 119–136. (in Russian) 9. Abass H., Shebatalhamd A. Wellbore instability of shale formation, Zuluf Field, Saudi Arabia. Paper SPE 106345. – May 2006. 10. Darley H.C.H., Gray G.R. Composition and Properties of Drilling and Completion Fluids. 5th ed. – Gulf Publishing Company, Houston; London; Paris; Zurich; Tokyo, 1979. – 643 p.
4 11. Frydman M. Modeling aspects of wellbore stability in shales. SPE 69529 // Latin American and Caribbean Petroleum Engineering Conference. – Buenos Aires, Argentina, March 25–28, 2001. 12. Golfier F., Bazin B., Lenormand R., Quintard M. Core-scale description of porous media dissolution during acid injection. Part I: Theoretical development // Computational and Applied Mathematics. – 2004. – Vol. 23. – No. 2–3. – P. 173–194. 13. Fontoura S.A.B. da, Rabe C., Lomba R.F.T. Characterization of shales for drilling purposes. Paper SPE/ISRM 78218 // Rock Mechanics Conference. – Irving, Texas, 2002. 14. Gaidarov M.M. et al. New drilling fluid systems in the construction of wells // Bulletin of the Association of Drilling Contractors. – 2015. – No. 4. – P. 61–68. (in Russian)
5 15. Umedov Sh.Kh., Mirsaatova Sh.Kh., Menglibekov A.B. Research of the influence of chemical reagents on properties of the flushing liquid based on local raw materials // European Journal of Technical and Natural Sciences. – Vienna, Austria, 2016. – No. 3. – P. 104–106. 16. Umedov Sh.Kh. Using highly mineralized washing fluids on well drilling in the areas of Uzbekistan // Int. Scientific and Practical Conf. “WORLD Science”. – UAE, 2015. – December. – No. 4(4). – P. 42–44. 17. Adams N.S. Well Control: Problems and Solutions. – Tulsa: PennWell Publishing Co., 1978. – P. 75–80. 18. Buckley S.E., Leverett M.C. Mechanism of fluid displacement in sands // Trans. AIME. – 1942. – Vol. 146. – P. 107–116.
6 19. Burnashev V.F., Khuzoyorov B.Kh. Modeling the multiphase flow of an oil-gas-condensate system in porous media // Journal of Petroleum and Engineering. – 2001. – Vol. 29. – P. 67–82. (in Russian) 20. Fredd C.N., Fogler H.S. Optimum conditions for wormhole formation in carbonate porous media: influence of transport and reaction // SPE Journal. – 1999. – No. 4. 21. Golfier R., Bazin B., Lenormand R., Quintard M. Core-scale description of porous media dissolution during acid injection. Part II: Calculation of effective properties // Computational and Applied Mathematics. – 2006. – Vol. 25. – No. 1. – P. 55–78.
7 22. Lake L.W., Pope G.A., Garey G.F. Isothermal multiphase, multicomponent fluid flow in permeable media // In Situ. – 1984. – Vol. 8. – No. 1. – P. 97–120. 23. Panga M.K. et al. A new model for predicting wormhole structure and formation in acid stimulation of carbonates. SPE 86517. – 2004.
Waiting