塔里木盆地顺南地区深层碳酸盐岩断裂和裂缝地震识别与评价

doi:10.11743/ogg20170407

Abstract

Abstract: There are many oil and gas discoveries along NE-trending strike-slip faults in Shunnan area,Tarim Basin,indicating that the strike-slip faults can be a controlling factor for hydrocarbon migration and accumulation. Considering deep burial depth,low signal-to-noise ratio and small fault displacement along the faults strike,seismic responses of small fault and fracture zones are not clear and difficult to be interpreted. Based on the actual three-dimensional seismic data of the Shunnan area,we carried out the numerical simulation for two models,model of limestone top surface and model of limestone internal surfaces. We also clarified seismic response characteristics for faults of different scales and established seismic identification model. According to the geological features and seismic recognition pattern of strike-slip faults,we selected sensitive seismic attributes such as trend surface,fine coherent,ant body and likelihood. Finally,based on the results of fracture prediction,the paper gave a description and evaluation on the strike-slip fault zone,such as fracture properties,levels,segmentation,and cavity features,and gave advice to the optimization of exploration plays and prosepects.

Key words: numerical simulation, strike-slip fault, carbonate rock, Shunnan area, Tarim Basin

CLC Number:

TE122.1

Liu Jun, Ren Lidan, Li Zongjie, Wang Peng, Yang Zichuan, Ma Lingwei. Seismic identification and evaluation of deep carbonate faults and fractures in Shunnan area,Tarim Basin[J]. Oil & Gas Geology, 2017, 38(4): 703-710.

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Seismic identification and evaluation of deep carbonate faults and fractures in Shunnan area,Tarim Basin

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