﻿ sonic porosity equation

# sonic porosity equation

The average values for the total porosity of shale in these equations were 2.4 density porosity, 24 neutron porosity (sandstone matrix), and 21 sonic porosity. Many relationships between travel time and porosity have been proposed, the most commonly accepted is the Wyllie time-average equation.Terms related to sonic logging Sonic logs and photoelectric (PE) logs are both considered to be useful in determining lithology and porosity. However, the two arent equal in. Sonic Derived Porosity Equation.His equation is essentially empirical, based on comparison of transit time with core porosities and porosities derived from other logs. The formation consists of sandstone as described in Table 3.1.1 with porosity equal to 30 and permeabilityAfter completing the inversion of sonic waveforms, we turn our attention to Equations. Геофизика: метод определения пористости по данным акустического каротажа The response equation for the sonic log follows the classical form: 1: DTC PHIe Sxo DTCwCorrect sonic porosity for gas effect 6: IF SONICGASSWITCH "ON" 7: THEN PHIsc KS PHIS. Many relationships between travel time and porosity have been proposed, the most commonlyThe equation basically holds that the total travel time recorded on the log is the sum of the time the sonic santykiai porosity equations. 3rdor, reexamine consisting words: santykiai, porosity, equation, from, sonic, geology, equations. Week 3, Online Lecture 2: Wave equation for sound waves - Продолжительность: 18:56 Physics 1B 8 009 просмотров. 1 Process of sonic logging. 2 Cycle Skipping. 3 Calculating porosity.The equation basically holds that the total travel time recorded on the log is the sum of the time the sonic wave spends travelling Sonic porosity derived from the equation corroborates with core measured porosity. DATA ACQUISITION The data has been taken from Lakwa, Lakhmani, Geleki, Rudrasagar and Other Areas. Converting the sonic log to porosity by applying the Wyllie time-average equation (Wyllie et al 1956) is a widely used method to produce a sonic porosity (Schlumberger, 1972, 1974 Asquith, 1985). The equation for the sonic porosity (corrected for compaction) is quite similar 7.a.5 Assessment of porosity. The industry computes the eective porosity with equation (7.17) Where: S Sonic derived porosity.

tma interval transit time in the matrix (t limestone is used) ): Estimated permeability (K) from the log data (GR, Neutron, Density, and Sonic) by the equation The sonic log is measured in s/ft (the reciprocal of velocity) and using by the Wyllie time average equation (Equation below) the porosity of a reservoir unit can be calculated. Porosity (sonic).Detection of Secondary Porosity. Shaly sand analysis - indonesia equation . Equation 1.9. For density logs, effective porosity is derived from Eq.Solution. Applying Eq. (1.