Porosity from sonic log
WebNov 15, 2024 · sonic log / Acoustic logging is one of petrophysical tool to evaluate well parameter oil filed Abdullah Abderahman Follow Advertisement Advertisement Recommended Sonic log Zubair Kamboh 12.7k views • 44 slides Acoustic Logging Priyansh Bhimajiyani 540 views • 25 slides Presentation on sonic log Asrar Hussain 1k views • 17 … WebThe sonic or acoustic log measures the travel time of an elastic wave through the formation. This This information can also be used to derive the velocity of elastic waves through the …
Porosity from sonic log
Did you know?
WebPermeability estimation from sonic-transit-time versus porosity gradients. Javalagi, Mohan Ishwar. University of Wyoming ProQuest Dissertations Publishing, 1995. 9630608. Webthe sonic log to a porosity log generates an apparent porosity trace keyed to one or other matrix mineral, in a similar fashion to the neutron and density logs. Primary and …
WebPorosity from the Sonic Log The sonic log is widely used to estimate porosity. The method works well when shale volume and matrix rock sonic travel time are accurately known. … WebJun 24, 2015 · Log analysis in shaly formations. Shales are one of the more important common constituents of rocks in log analysis. Aside from their effects on porosity and …
WebFeb 22, 2024 · Porosity is the value used to describe how much empty, or void, space is present in a given sample. This attribute is commonly measured in regards to soil, since appropriate porosity levels are necessary for plants to grow. WebDec 4, 2024 · Figure 6: Sonic Logs and Seismic Ties Array sonic logs were developed to provide information about a variety of acoustic properties such as porosity, permeability, …
WebThe most critical parameter to calculate sonic porosity is perhaps the matrix compressional travel time Δt matrix . It is not only usually unknown, but in many reservoirs is not a constant parameter, but a curve that depends on the variable column lithology, its matrix fabric, and rock's stiffness.
WebJun 24, 2015 · The neutron-porosity log first appeared in 1940. It consisted of an isotopic source, most often plutonium-beryllium, and a single detector. Many variations were produced exploiting both thermal and epithermal neutrons. In most of the early tools, neutrons were not detected directly. t-shirt press ebayphilosophy original hope in a jarWebJun 24, 2015 · The layer of closely bound surface water on the clay particle can represent a very significant amount of porosity. However, this porosity is not available as a potential reservoir for hydrocarbons. Thus, a shale or shaly formation may exhibit a high total porosity, yet a low effective porosity as a potential hydrocarbon reservoir. philosophy oshcWebDensity Log. The density log usually labelled ‘RHOB’ measures the density of the borehole and the rocks penetrated by the drill bit. The unit for density is gram per cubic centimetre. The logs (sonic and density) measurements are usually made every 6 in. down hole, but must be aligned to be ‘on-depth’ with each other. philosophy origin of wordWebJan 1, 2024 · Where e: Effective porosity from Neutron-Density lo gs; N: Porosity by Neutron log; D: Porosity by Density Log. The porosity can be calculated by neutron-sonic equa tion [42]: t-shirt pressWebThe sonic log will underestimate porosity in uncompacted formations. In general, the sonic log is unsuitable for these formations and should not be used to determine porosities. However, if only the sonic log has been run, then it is possible to correct for this underestimation, an empirical correction factor, C p, is used, as follows: ∅= philosophy outreach projectWebThe sonic log is widely used by geophysicists to create synthetic seismograms for comparison with field records of seismic reflections from lines shot close to the well. … t-shirt presses for sale