| Autor: |
Yudong Tian, Gonghui Liu, Yue Qi, Jun Li, Yan Xi, Wei Lian, Xiaojie Bai, Penglin Liu, Xiaoguang Geng |
| Předmět: |
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| Zdroj: |
Fluid Dynamics & Materials Processing; 2023, Vol. 19 Issue 11, p2837-2845, 9p |
| Abstrakt: |
Organic rich dark shale of Q Formation can be found in many areas (e.g., in the North of S Basin). The shale target stratum is easy to hydrate and often undergoes spallation. Therefore, centering the casing in the horizontal section of the irregular borehole is relatively difficult. Similarly, achieving a good cement flushing efficiency under complex borehole conditions is a complex task. Through technologies such as centralizer, efficient preflushing, multi-stage flushing and ductile cement slurry, better performances can be achieved. In this study, it is shown that the cementing rate in the DY2H horizontal section is 97.8%, which is more than 34% higher than that of adjacent wells. This cementing matching technology for sidetracking horizontal wells can be used to improve the cementing quality of continental shale and provides a reference for future applications in this field. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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