The aim of the present map is to illustrate a detailed pre-earthquake hydrogeological conceptual model Sibillini Mts. This area was struck by prolonged seismic sequence up Mw 6.5 in 2016. Geological, tectonic, and data were collected from literature before 2016, subsequently standardized re-interpretated with presenting (1:50,000 scale) carbonate system (Central Italy). supported 11 both cross ...

Analyses of fracturing and thermal performance of fractured reservoirs in engineered geothermal system (EGS) are extended from a depth of 5 km to 10 km, and models for flow and heat transfer in EGS are improved. Effects of the geofluid flow direction choice, distance between fractures, fracture width, permeability, radius, and number of fractures, on reservoir heat drawdown time are computed. T...

Seismic fluid identification plays an important role in reservoir exploration and development. Natural vertical fractures are common carbonate rocks, it is essential to consider fracture-induced anisotropy the of fractured reservoirs. We have developed a novel Bayesian elastic impedance variation with angle azimuth (EIVAZ) inversion approach for directly estimating fracture indicator (FFI), whi...

Fractured reservoirs account for a majority of the oil production worldwide and often have low recovery rate. Fracture characterization is important in building reservoir flow models for enhanced oil recovery. Information about fracture orientation, fracture spacing, and fracture compliances is essential. When a fracture network consisting of multiple sets of fractures with variable fracture sp...

Production well killing before workover operations in late-stage oil and gas-condensate fields can be complicated by abnormally low formation pressure, carbonate type of reservoir rocks, high gas-oil ratio. These complications lead to the intensive absorption technological fluids gas ingresses, which, its turn, increases time wells putting them on production, reduction productivity, additional ...

Generation of naturally fractured reservoir subsurface fracture maps and prediction its production potential are considered complex process due to insufficient data available such as bore hole images, core data and proper reservoir simulator model. To overcome such shortcomings, the industry has relied on geo-statistical analyses of hard and soft data, which are often referred to as static data...

In a reservoir characterization study of the Hontomín deep saline aquifer, impact geological heterogeneities on storage capacity and migration CO2 plume is explored. This work presents, for first time, very long-term (up to 200 years) simulations injection into naturally fractured Sopeña Formation, lower Jurassic age, at Hontomín. was simulated as dual permeability case with Eclipse composition...

Fractured carbonate reservoirs account for 25% of world’s total oil resources and for 90% of Iranian oil reserves. Since calcite and dolomite minerals are oil wet, gas oil gravity drainage (GOGD) is known as the most influencing production mechanism. The most important issue within gas injection into fractured media is the channeling problem which makes the efficiency of gas injection process e...

In this research attempts were made to estimate the in-situ stresses acting on a hydrocarbon reservoir based on routine activities of acid injection in oil reservoir. It was found that the relation between the re-opening pressure of fracture and principal in-situ stresses can be estimated using rock mechanics equations for the circular underground cavities. An appropriate relation between the m...