Geothermal reservoir characterization by tracer and well testing

Date

1997-12-01

Author

Akın, Serhat

Metadata

Show full item record

Item Usage Stats

91
views

0
downloads

This work presents the analysis of experimental data obtained on a lab scale fractured geothermal model where matrix block sizes, fracture apertures and distributions are known. The ultimate goal is to obtain the fracture aperture which is a key parameter in determining the flow and transport characteristics of fractured media. For the tracer tests, 4,000 ppm potassium iodide solution slug was injected from the corner of the model prepared using seventy stacked marble blocks and production concentration of the tracer was monitored from the other end of the diagonal. Drawdown pressure transient tests were conducted using the same model. Results indicated that flow was mainly through a major fracture path and tracer also entered to this path from auxiliary side fractures. The apparent size of the main fracture path was calculated as average 30 microns and secondary fractures had the average size of 10 microns which was found to be in good agreement with the mechanical aperture of 13.58 microns. The apparent fracture apertures, calculated using the permeability obtained from the well test analysis, changed from 70 microns to 116 microns overestimating the mechanical fracture aperture.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0031344123&origin=inward
https://hdl.handle.net/11511/77099

Collections

Department of Petroleum and Natural Gas Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Numerical simulation of scour at the rear side of a coastal revetment Şentürk, Barış Ufuk; Guler, Hasan Gokhan; Baykal, Cüneyt (2023-05-01) This paper presents the results of a numerical modeling study on the scouring of unprotected rear side material of a rubble mound coastal revetment due to the overtopping of solitary-like waves utilizing a coupled hydro-morphodynamic computational fluid dynamics (CFD) model. Three cases having various wave heights are tested with six different turbulence models together with different wall functions. The hydrodynamic results (free-surface elevations, overtopping volumes, and jet thicknesses) and morphologic...
Energetics and structural stability of lanthanum microclusters Erkoç, Şakir; Bastug, T; Hirata, M; Tachimori, S (1999-12-03) The energetics and the structural stability of lanthanum microclusters (La-n) have been investigated by performing relativistic density functional calculations and molecular dynamics (MD) simulations. An empirical potential energy function has been parameterised for a lanthanum element by using the dimer interaction potential energy profile of La-2, which is calculated by relativistic density functional method. Stable structures of the microclusters for n = 3-13 have been determined by MD simulation and ele...
Computer Solutions of Plane Strain Axisymmetric Thermomechanical Problems Eraslan, Ahmet Nedim (2005-08-01) A simple computational model is developed to estimate elastic, elastic-plastic, fully plastic, and residual stress states in generalized plane strain axisymmetric structures considering temperature dependent physical properties as well as nonlinear isotropic strain hardening. Using the von Mises yield criterion, total deformation theory and a Swift-type nonlinear hardening law, a single nonlinear differential equation governing thermoelastoplastic behavior is obtained. A shooting technique using Newton iter...
Adsorption of water and ammonia on TiO2-anatase cluster models

Önal, Işık; Senkan, Selim (2006-06-15)

Density functional theory (DFT) calculations performed at B3LYP/6-31G** level are employed to study water and ammonia adsorption and dissociation on (101) and (001) TiO2 anatase surfaces both represented by totally fixed and partially relaxed Ti2O9H10 cluster models. PM3 semiempirical calculations were also conducted both on Ti2O9H10 and Ti9O33H30 clusters in order to assess the effect of cluster size. Following dissociation, the adsorption of H2O and NH3 by H-bonding on previously H2O and NH3 dissociated s...
Numerical simulation of dynamic shear wall tests: A benchmark study Kazaz, I; Yakut, Ahmet; Gulkan, P (2006-03-01) This article presents the numerical simulation of a 1/3-scale, 5-story reinforced concrete load bearing structural wall model subjected to seismic excitations in the context of IAEA benchmark shaking table experiment conducted in laboratories of CEA in Saclay, France. A series of non-linear time history analyses were performed to simulate the damage experienced and response quantities measured for the specimen tested on a shaking table. The mock-up was subjected to a series of artificial and natural earthqu...

Citation Formats

S. Akın, “Geothermal reservoir characterization by tracer and well testing,” 1997, vol. 21, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0031344123&origin=inward.