Details

Autor(en) / Beteiligte

• Chen, Yi-ren
• Li, Xiang-wen
• Bi, Jiao-ying
• Zhou, Hong-bo
• Wang, Zi-ao
• Zhang, Guang-qing
• Jia, Chun-zi
• Chen, Qi-yue
• Lin, Jia'en

Titel

Analysis Method of Activity Intensity of Ultra Deep Strike-Slip Fault Fractured Zone in Tarim Basin

Ist Teil von

• Proceedings of the International Field Exploration and Development Conference 2021, 2022, p.3504-3510

Ort / Verlag

Singapore: Springer Nature Singapore

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The Ordovician ultra-deep tight limestone strata in the Tarim Basin develop strike-slip faults, which are buried at a depth of 6000–12000 m. Around the strike-slip faults are the fracture area that controls the reservoir development, hydrocarbon migration, and accumulation. Therefore, the strike-slip fracture zone is the primary target for oilfield reserves growth and productivity construction. The activity intensity of the fracture zone is closely related to the scale of reservoir development and hydrocarbon charging. It is the crux element of efficient exploration and development strategies for heterogeneous carbonate reservoirs. This paper proposes a method to evaluate the activity intensity of the fracture zone. The first step is to increase the resolution of seismic data for fractured fracture zones by multiple filtering. Then enhance the fracture features in the seismic data. The last step is extracting the cumulative time or depth amplitude thickness attributes that reflect the fractured zone based on geological knowledge. We have designed a parameter table and applied this method in the Tabei area. The parameter includes the segment length, longitudinal thickness, and transverse width of the fracture area around the strike-slip fault. The table represents the activity intensity of fracture zones and perfectly matches the drilling and testing conditions. The method can effectively guide the formulation of reservoir development strategies and promote to other oilfields.