Direct Oil Detection - Solution to Energy Crisis
T. Khan, S. Khan
Nonlinear Seismic Imaging Inc., US
Keywords: direct, detection, nonlinear
Abstract:In the oil industry, the quest for the last 100 years has remained the same – to directly detect hydrocarbons beneath Earth’s surface. This elusive goal has been to find and produce hydrocarbons that are left behind in existing reservoirs and reservoirs yet to be discovered. To achieve this objective, industry needs a new,highly diagnostic technology that detects and maps hydrocarbon reservoir fluids and reservoir properties rather than the subsurface structure. The current simplistic model of Earth’s sedimentary rocks, which assumes an elastic linear behavior, restricts imaging capabilities for direct hydrocarbon detection. It needs to be upgraded to a more advanced geologic model of an active and nonlinear behavior of reservoir rocks that contain hydrocarbon accumulations. The nonlinearity attribute which directly correlates with the reservoir porosity, permeability and the pore fluids, assists us to directly map hydrocarbons trapped in subsurface formations. The nonlinear behavior of the rocks generates the harmonics, sum and difference frequencies, and sub-harmonics related to the slow-wave phenomenon in a permeable formation. Each one of these attributes can be displayed on a separate seismic image, thus identifying the type of fluid and reservoir properties. These images are provided in addition to normal conventional seismic images used today at very little additional cost.