Standard rock physics models are formulated to describe the behavior of porous sedimentary reservoirs, with clean sandstones being archetypal system; however, many situations demand geophysical monitoring rocks significantly different structures, such as low porosity, fractured reservoirs. Conventional also suggest that these “stiff” reservoirs can be challenging monitor seismically due small f...

Vapor-dominated geothermal systems are proposed to originate by downward extension (by the "heat pipe" mechanism) into hot dry fractured rock above a large cooling igneous intrusion. High temperature zones found by drilling are shallow parts of the original hot dry rock where the penetration of the vapor reservoir was limited, and hot dry rock may extend under much of these reservoirs. An earli...

The work is devoted to the determination of reservoir properties carbonate rocks, using new modern GIW methods (geophysical investigations wells). main approaches that determine physical and mechanical (PHMP) acoustic anisotropy rocks associated with cavernosity fracturing, as well permeability characteristics field productivity, formations, liquids gases saturating productive horizons are spec...

We use a 3-D finite difference numerical model to generate synthetic seismograms from a simple fractured reservoir containing evenly-spaced, discrete, vertical fracture zones. The fracture zones are represented using a single column of anisotropic grid points. In our experiments, we vary the spacing of the fracture zones from 10-meters to 100-meters, corresponding to fracture density values fro...

Integrated optimization of well placement and hydraulic fracture parameters in naturally fractured shale gas reservoirs is significance to enhance unconventional hydrocarbon energy resources the oil industry. However, task usually presents intensive computation-cost due numerous high-fidelity model simulations, particularly for field-scale application. We present an efficient multi-objective fr...

The Los Alamos Hot Dry Rock Reservoir is an experimental geothermal project in north-central New Mexico. A fractured zone was created within otherwise impermeable igneous and metamorphic rock by injecting water into a borehole under high pressure, at about 3.5 km depth. During the injection process, the seismic waves created by the fracturing events were recorded by seismometers located in four...

Fracture characteristics—such as orientation, type, fluid storage capability, and permeability—are complex yet essential information for understanding fractured reservoirs. Fractures are often perceived as permeable pathways, although many fractures partially or completely inhibit permeability within a reservoir. For example, opening-mode fractures (joints) may be partially or entirely sealed h...

Imaging and characterizing fractured shale reservoirs constitute significant challenges. We introduce a workflow and illustrate the application of instantaneous spectral analysis with the aid of a case study on fractured shale reservoirs. With the well log modeling, frequency dependent energy and phase are improved by removing the wavelet overprint. Extracted frequency dependent energy and phas...

At the Sidi Bouzid area located in Central Tunisia, Cenomanian-Turonian reservoir rocks are well outcropping, especially in the Jebel el Kébar and Meloussi areas. The present work confirms that these carbonate intervals constitute the lateral equivalent of the Early-Middle Turonian Biréno and Late Turonian-Coniacian Douleb reservoir Members which are included within the pelagic marls of the Tur...