Study And Appliance Of Monosandbody Internal Architecture

Residual oil distribution in high water oilfield is a worldwide difficult problem. while oilfield enters into specially high water phase, Residual oil in reservoir rocks became high disperse state, Which makes tapping potentiality more difficult. As theory that monosandbody internal architecture was advanced and developed, it supplied important foundation for residual oil research. This paper starts to key core well, sets up research area's sedimentary microfacies patterns and distinguish properties, the author sets up relevant logging microfacies patterns. On the condition of high dense well pattern, we fine divide and contrast deposition unit by monosandbody rank, and determine every deposition unit's microfacies in each production well. According in the same unit, each production well microfacies determine plane deposition unit microfacies and monosandbody space distribution, realize monosandbody discernment. On the foundation, we summarized the results of field outcrop and fluvial engineering, drew parameter of underground monosandbody internal architecture. The author fine describe the fourth grade lateral accretion body and thin separate bedding in it of internal sandbody. We researched and computed inclination of architecture, and summarized thin separate bedding space structure of distributary channel. At last, according to the result, the author analyzed the extent that thin separate bedding affected form and distribution of residual oil.