Exploration and Suggestions on Continuous Optimization of Wellbore Structure of 8000m Ultra-deep Well in the Southern Margin of the Junggar Basin

DOI

10.2991/978-94-6463-688-8_38How to use a DOI?

Keywords

the Junggar Basin; southern edge; well structure; ultra-deep well; liner suspension; reaming while drilling

Abstract

In view of the complex formation pressure characteristics faced by the 8000 meter exploration in the middle section of the southern margin of the the Junggar Basin, the pore pressure, fracture pressure and collapse pressure of the formation were calculated by using the logging data and GMI software, and the calculation results were revised in combination with the drilling data and core mechanics test results, and the more accurate characteristics of the three pressure profile of the formation in the southern margin of the the Junggar Basin were obtained. In response to the pressure system characteristics of “three lows, two highs, and one narrowness”, five necessary sealing points and one risk point were determined for the ultra-deep well in the middle section of the southern margin. Two sets of wellbore structures were optimized to support the completion of 8000 meter ultra-deep wells in the middle section of the southern margin. To further reduce drilling costs, based on research on international ultra-deep wells and domestic over ten thousand meters deep wells, the concepts and measures of tail pipe suspension, optimized casing clearance, and expansion while drilling have been proposed, which have reference value for continuously optimizing the wellbore structure at the southern edge.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Shuang Huang
AU  - Lingzhan Zou
AU  - Shuangquan Wen
AU  - Yulong An
AU  - Sheng Lei
AU  - Fei Luo
AU  - Gang Liu
AU  - Yi Yang
PY  - 2025
DA  - 2025/04/30
TI  - Exploration and Suggestions on Continuous Optimization of Wellbore Structure of 8000m Ultra-deep Well in the Southern Margin of the Junggar Basin
BT  - Proceedings of the 2024 6th International Conference on Civil Architecture and Urban Engineering (ICCAUE 2024)
PB  - Atlantis Press
SP  - 362
EP  - 374
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-688-8_38
DO  - 10.2991/978-94-6463-688-8_38
ID  - Huang2025
ER  -