Quantitative prediction to fractured reservoir in buried hill based on pre-stack amplitude azimuthal anisotropy

CUI Gang; LI Xiurong; WANG Jinjin; YANG Yingying; GUO Yuting; XIAO Xiao

doi:10.16028/j.1009-2722.2021.331

2022 Vol. 38, No. 10

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Article navigation > Marine Geology Frontiers > 2022 > 38(10): 59-68

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CUI Gang, LI Xiurong, WANG Jinjin, YANG Yingying, GUO Yuting, XIAO Xiao. Quantitative prediction to fractured reservoir in buried hill based on pre-stack amplitude azimuthal anisotropy[J]. Marine Geology Frontiers, 2022, 38(10): 59-68. doi: 10.16028/j.1009-2722.2021.331

Citation:

CUI Gang, LI Xiurong, WANG Jinjin, YANG Yingying, GUO Yuting, XIAO Xiao. Quantitative prediction to fractured reservoir in buried hill based on pre-stack amplitude azimuthal anisotropy[J]. Marine Geology Frontiers, 2022, 38(10): 59-68. doi: 10.16028/j.1009-2722.2021.331

Quantitative prediction to fractured reservoir in buried hill based on pre-stack amplitude azimuthal anisotropy

1.
The First Oil Extraction Factory of Huabei Oilfield Company, Renqiu 062552, Hebei, China
2.
Exploration and Development Research Institute of PetroChina Huabei Oilfield, Renqiu 062552, Hebei, China

Received Date: 29 December 2021

Accepted Date: 29 July 2022

Publish Date: 28 October 2022

Abstract

Abstract

Fractured carbonate reservoirs are highly heterogeneous, and the reservoir types are dominated by high-angle fractures. How to accurately characterize the spatial distribution characteristics of reservoirs in oilfield development and find remaining oil in structural highs is an urgent problem to be solved. Regarding carbonate buried hill fracture reservoir as research object, technology of quantitative prediction to delineate fracture reservoir in buried hill was applied using pre-stack azimuthal anisotropy. Different azimuth seismic amplitude attributes were used to predict fracture intensity by ellipse fitting, and then cross-plot analysis of predicted fracture intensity and interpreted single well Formation Microscanner Image（FMI） fracture were conducted to obtain fracture intensity cutoff values of fracture reservoir of different scales. Eventually, the purpose of quantitative carbonate fracture reservoir delineation can be achieved in combination with 3D visualization seed point tracking technology. Practical application shows that the method could enhance fracture reservoir exploration reliability, and the prediction was proved by drilling results.
- carbonate rock /
- fracture-pore reservoir /
- pre-stack azimuthal anisotropy /
- fracture prediction /
- quantitative delineation /
- buried hill

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References

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