Estimation of Formation Porosity and Water Saturation Using Resistivity Log Data
| Autor: | Yi-Yin Lee, 李怡瀛 |
|---|---|
| Rok vydání: | 2005 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 93 The purpose of this study is to estimate formation porosity and formation saturation by using Log while Drilling (LWD) data which including of Gamma ray log. In order to estimate formation porosity and formation saturation, Archie Equation parameters, such as Tortuously factor (a), Cementation factor (m) and Saturation exponent (n), of Archie Equation and Ratio Method parameters ( Permeably Factor (z) and Invasion Factor (P) ) of Ratio Method were calculated by optimization method based on the core data from G-1 well of G oil field. Consequently, the parameters ( a, m and n are 0.807, 1.78 and 1.897 respectively for Archie Equation, and P and Z are 0.2 and 0.06 respectively for Ratio Method ) were calculated by the optimization method. These relevant parameters were applied to calculate formation porosity and formation saturation for horizontal wells as below, which consist only LWD data. In case of M-1A formation, formation porosity and formation saturation are 28.79% and 37.65% respectively in A-3-H well and 28% and 39.33% respectively in A-9-H well. In case of M-1C formation, formation porosity and formation saturation are 26.20% and 38.19% respectively in A-10-H well and 18.17% and 47.92% respectively in B-2-H well. Estimation of formation porosity using resistivity log data has been demonstrated and therefore could be an appropriate way to better estimate formation porosity with lack of porosity log. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|