Yi Xuefei1, Zhang Changmin2, Li Shaohua2, Du Jiayuan2,3,Li Kang2, Wang Haoyu2, Li Xiangyang4, Zhou Fengjuan3
1.Hubei Cooperative Innovation Center of Unconventional Oil and Gas,Wuhan.430100,Hubei 2.Key Laboratory of Oil and Gas Resources and Exploration,Yangtze University,Wuhan.430100,Hubei 3.Shenzhen Branch of CNOOC Ltd.,Guangzhou.510240,Guangdong 4.Henan Nuclear Industry Geology Bureau,Xinyang.464000,Henan
Abstract：More and more sand injectites have been identified from outcrops,seismic data,core observation and logging curves in the last decade. They exert great influence upon exploration and development of oil and gas, both positively and negatively. But because of their complex formation process and distribution,fewer studies has been focused on soft sediments deformations formation mechanisms. A set of laboratory simulation device is set up and a whole experimental procedure is designed to discuss their genetic mechanisms. On this basis,5 experiments considered the influence of two main variables on the structures formed during fluidization, i.e., the thickness of the overlying coarse sediment layer and the configuration of inlet pipes, are carried out. Each experiment result is freezed,sliced and been taken photos to reconstruct a 3D model. It is hoped to provide an experimental basis for the formation mechanism analysis on sand injectites.
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