agh darreh tailing dam located in 23 km north of takab, west azarbayjan province is used for disposal of mine tailings. the tailing dam and its reservoir were constructed on gypsiferous marlstones. this is emphasis on geotechnical and environmental importance of the site. although construction of dams on gypsum rocks were not yet prohibited, but the dissolution of gypsum in contact with water i...

This paper discusses a new nuclear magnetic resonance (NMR) method that can provide wettability, saturation, and oil viscosity values in rocks partially saturated with oil and brine. The method takes advantage of two new technological advances in NMR well logging — the MRF Magnetic Resonance Fluid Characterization Method and NMR “diffusion-editing” (DE) pulse sequences. We discuss the principle...

In deep karst reservoirs, the internal environment is complex, and thermal stratification isnot only factor controlling vertical distribution of DIC concentration. Previous studies have not fully understood migration transformation in a deep-water reservoir. this study, reservoir southwest China was chosen, spatial temporal characteristics concentration, pCO2, δ13CDIC value, SIc were investigat...

In geothermal reservoirs, hydrothermal distribution is significant. The most widely utilized reservoirs to date are those of systems, which systems where the reservoir contains steam, water, or a mixture both, depending on pressure and temperature reservoir. One geophysical method that enough map subsurface conditions determine 2-Dimensional Geoelectric using Wenner configuration. This aims stu...

Estimation of the hydraulic properties of aquifers, petroleum reservoir rocks, and soil systems is a fundamental task in many branches of Earth sciences and engineering. The transient diffusion equation proposed by Fourier early in the 19th century for heat conduction in solids constitutes the basis for inverting hydraulic test data collected in the field to estimate the two basic parameters of...

The present article exhibits the achieved results based on evaluation of two petroleum systems, which compares reservoirs fluvial environments sedimentary basins located in south and north Atlantic, Brazil (Recôncavo Basin) Portugal (Lusitanian Basin), respectively. main contribution this study is survey static (source, reservoir, sealing rocks, addition to traps) dynamic elements (tectonic, mi...

Through optical microscopic examination, scanning electron microscope analysis, whole rock X-ray diffraction fluorescence spectrum carbon and oxygen isotope temperature measurement of fluid inclusions, the characteristics formation mechanism alkaline lacustrine tight oil reservoirs Permian Fengcheng Formation in Mahu Sag Junggar Basin have been systematically studied, a genetic model has propos...

Hot dry rocks, as clean and abundant sources of new energy, are crucial in the restructuring energy. Predicting temperature field hot rocks is great significance for trapping target areas rocks. How to use limited logging data predict within a work area difficulty faced rock exploration. We propose method (using seismic inversion results). The relationship between porosity transverse wave veloc...

Phase change of pore fluid (boiling/condensing) in rock cores under conditions representative of geothermal reservoirs results in alterations of the electrical resistivity of the samples. In fractured samples, phase change can result in resistivity changes that are more than an order of magnitude greater than those measured in intact samples. These results suggest that electrical resistivity mo...

We have studied the IP response of the multiphase porous systems by conducting complex resistivity (CR) frequency domain IP measurements for two different groups of samples: sands and sandstones containing salt water in pores and those whose unsaturated pores are filled with synthetic oil. We have observed the IP behavior in the imaginary parts of the analyzed complex resistivity curves. We hav...