| Autor: |
Hu, Wenge, Wang, Qiang, Zhao, Rui, Ru, Zhixing |
| Zdroj: |
Arabian Journal of Geosciences; Apr2021, Vol. 14 Issue 7, p1-13, 13p |
| Abstrakt: |
Shunbei reservoir in Tarim Basin is a typical ultra-deep carbonate reservoir with fault-fracture systems. The present in situ stress field has an essential influence on the permeability of fault-fracture systems. Therefore, it is of great significance to study the in situ stress field and permeability of the fault-fracture systems for drilling success rate and acid fracturing effect after drilling. Based on the data of regional seismic reflection and coherence, 3D geological models of reservoirs in Shunbei 1 and 5 fault zones are established. Through the logging data of typical wells, the size and direction of in situ stress are determined. Based on the finite element method and damage mechanics theory, the slip tendency coefficients of different parts of the fault-fracture systems are simulated and calculated. The numerical simulation results are consistent with the drilling history of typical wells. The critical slip tendency coefficient is 0.1 in Shunbei 1 fault zone and 0.3 in Shunbei 5 fault zone. Drilling the fault planes in the critical stress state can improve the drilling effectively and obtain the ideal well production. This study provides a new idea for the efficient development of the Shunbei ultra-deep fault-controlled reservoir. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink