Research into the growth of bearing capacity of the near-wall zone during and after the borehole drilling operation

DOI: https://doi.org/10.30686/1609-9192-2024-6-173-177

Читать на русскоя языкеA.R. Deryaev
State Concern “Тurkmengaz”, Ashgabat, Turkmenistan
Russian Mining Industry №6 / 2024 p. 173-177

Abstract: The purpose of this paper is to study the bearing capacity of the near-wall zone during and after borehole drilling to assess the actual condition of the borehole during the drilling process. The author makes a forecast of the quantitative growth of the open borehole bearing capacity based on the results of hydraulic testing performed in the real X1 East Cheleken borehole (Turkmenistan). Six hydraulic pressure tests of the open borehole were performed sequentially when the borehole reached the depths of 1950 m, 2236, 2677, 3409, 3760 and 4085 m upon running the 324-mm intermediate string to the depth of 1793 m during further deepening of the borehole. Over time, wall packing also occured at these levels, which was confirmed at the depth of 4085 m, when the bearing capacity of the borehole walls was restored. The bearing capacity of the near-wall area in the zone below the casing seat exceeded the calculated pressure of the theoretical hydrofrac by more than 60 kg/cm2. The increase in the borehole bearing capacity was 0.4509 kg/cm2 per day for the upper red-colored sediments. The author recognizes the fact that such studies were carried out only in one borehole and in one area, which allows us to refer to obtaining only an estimated quantitative result and only for a specific borehole condition. This work can be used as a methodology base for further studies. The author believes that it is possible to forecast the dynamics of increasing the bearing capacity of the near-wall zone of the boreholes drilled based on successive surveys, which can be used to assess the condition of the borehole during the drilling of subsequent boreholes in the area.

Keywords: wall packing, hydrofrac, rock, dispersed phase, hydraulic testing, borehole cross-section, borehole bearing capacity

For citation: Deryaev A.R. Research into the growth of bearing capacity of the near-wall zone during and after the borehole drilling operation. Russian Mining Industry. 2024;(6):173–177. (In Russ.) https://doi.org/10.30686/1609-9192-2024-6-173-177

Article info

Received: 29.10.2024

Revised: 18.11.2024

Accepted: 22.11.2024

Information about the author

Annaguly R. Deryaev – Dr. Sci. (Eng.), Chief Research Associate, The State Concern “Тurkmengaz”, Ashgabat, Turkmenistan; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

References

1. Аксельрод С.М. Интегрированные геофизические исследования в процессе бурения с целью прогноза порового давления и геологического разреза впереди долота (по материалам зарубежных публикаций). Каротажник. 2017;(1):69–104. Akselrod S.M. Integral logging while drilling to forecast pore pressure and geologic characteristics of the rock in front of the bit (based on foreign publications). Karotazhnik. 2017;(1):69–104. (In Russ.)

2. Казымов Ш.П. Повышение нефтеотдачи в обводненных и трудноизвлекаемых коллекторах. SOCAR Proceedings. 2022;(1):89–93. Kazymov Sh.P. Enhanced oil recovery in water cut and hard-to-recover reservoirs. SOCAR Proceedings. 2022;(1):89–93. (In Russ.)

3. Андреев А.В., Мухаметшин В.Ш., Котенев Ю.А. Прогнозирование продуктивности залежей в карбонатных коллекторах с трудноизвлекаемыми запасами. SOCAR Proceedings. 2016;(3):40–45. Andreev A.V., Mukhametshin V.Sh., Kotenev Yu.A. Deposit productivity forecast in carbonatereservoirs with hard to recover reserves. SOCAR Proceedings. 2016;(3):40–45. (In Russ.)

4. Хузина Л.Б., Шайхутдинова А.Ф., Кязимов Э.А. К вопросу исследования вибрационного устройства для предупреждения прихватов при строительстве нефтяных и газовых скважин. Scientific Petroleum. 2023;(1):32–42. https://doi.org/10.53404/Sci.Petro.20230100038 Khuzina L.B., Shaykhutdinov A.F., Kazimov E.A. To the question of the study of a vibration device to eliminate seizures during the construction of oil and gas wells. Scientific Petroleum. 2023;(1):32–42. (In Russ.) https://doi.org/10.53404/Sci.Petro.20230100038

5. Александров Б.Л., Моллаев З.Х., Шилов Г.Я. Повышение эффективности геологоразведочных работ и снижение геологических рисков при поисках нефти и газа на территории Сибири и арктического шельфа. Нефтяное хозяйство. 2018;(3):8–12. https://doi.org/10.24887/0028-2448-2018-3-8-12 Aleksandrov B.L., Mollaev Z.H., Shilov G.I. Enhancement of geological exploration efficiency and its risk mitigation during on the territory of Siberia and Arctic shelf. Oil Industry. 2018;(3):8–12. (In Russ.) https://doi.org/10.24887/0028-2448-2018-3-8-12

6. Исламов А.И., Фасхутдинов Р.Р., Колупаев Д.Ю., Верещагин С.А. О механизмах возникновения зон с аномально высоким пластовым давлением и методах их прогнозирования в неразрабатываемых пластах на примере Приобского месторождения. Нефтяное хозяйство. 2018;(10):54–59. https://doi.org/10.24887/0028-2448-2018-10-54-59 Islamov A.I., Faskhutdinov R.R., Kolupaev D.Yu., Vereschagin S.A. On the mechanisms of the formation of zones with abnormally high rock pressure and methods for predicting them in undeveloped rock systems, Priobskoye field case study. Oil Industry. 2018;(10):54–59. (In Russ.) https://doi.org/10.24887/0028-2448-2018-10-54-59

7. Deryaev A.R. Features of the construction of directed deep wells in Turkmenistan. Italian Journal of Engineering geology and environment. 2024; (1) 35-47. DOI:https://10.4808/IJEGE.2024-01.O-03.

8. Deryaev A.R. Drilling of direçtional wells in the fields of Western Turkmenistan. Grassroots Journal of Natural Resources. 2024; V.7 (2); 347-369. Doi: https://doi.org/10.33002/nr2581.6853/070218.

9. Аббасов О.Р., Алиев А.А., Агаев А.М., Худузаде А., Хасанов Е. Минералогия, геохимия и особенности палеовыветривания горючих сланцев палеоген-миценовых отложений Азербайджана. SOCAR Proceedings. 2022;(1):24–36. https://doi.org/10.5510/OGP20220100625 Abbasov O.R., Aliyev A.A., Agayev A.M., Khuduzade A., Hasanov E. Mineralogy, geochemistry and paleoweathering characteristics of Paleogene-Miocene oil shales in Azerbaijan. SOCAR Proceedings. 2022;(1):24–36. (In Russ.) https://doi.org/10.5510/OGP20220100625

10. Поспелков М.С., Трусов А.И. Оперативная оценка аномально высоких пластовых давлений на месторождениях Надым-Пур-Тазовского региона. Каротажник. 2017;(11):126–133. Pospelkov M.S., Trusov A.I. Fast estimation of abnormally high formation pressures in the fields of Nadym-Pur-Taz region. Karotazhnik. 2017;(11):126–133. (In Russ.)

11. Чижов А.П., Мухаметшин В.В., Андреев В.Е. и др. Геомеханические аспекты совершенствования бурения скважин в сложных горнотехнических условиях. SOCAR Proceedings. 2022;(SP1):1–8. Chizhov A.P., Mukhametshin V.V., Andreev V.E. et al. Geomechanical aspects of improving well drilling in difficult mining conditions. SOCAR Proceedings. 2022;(SP1):1–8. (In Russ.)

12. Рачкевыч Р.В., Чудык И.И., Рачкевыч И.А., Аль-Танакчи А. Анализ напряженно-деформированного состояния участка бурильной колонны в интервале скважины с каверной. SOCAR Proceedings. 2022;(SP2):1–8. Rachkevych R.V., Chudyk I.I., Rachkevych I.A., Al-Tanakchi A. Application of fuzzy logic for risk assessment of investment projects. SOCAR Proceedings. 2022;(SP2):1–8. (In Russ.)

13. Peng C., Pang J., Fu J., Cao Q., Zhang J., Li Q. et al. Predicting rate of penetration in ultra-deep wells based on deep learning method. Arabian Journal for Science and Engineering. 2023;48(12):16753–16768.

14. Деряев А.Р. Прогноз дальнейшей перспективы бурения сверхглубоких скважин в сложных горно-геологических условиях западного Туркменистана. SOCAR Proceedings. 2023;(2):13–21. Deryaev A.R. Forecast of the future prospects of drilling ultra-deep wells in difficult mining and geological conditions of Western Turkmenistan. SOCAR Proceedings. 2023;(2):13–21. (In Russ.)