![An exploratory well encountered three reservoir formations S1 (perfectly cemented) S2 (poorly cemented) and S3](https://www.gkseries.com/blog/wp-content/uploads/2023/09/An-exploratory-well-encountered-three-reservoir-formations-S1-perfectly-cemented-S2-poorly-cemented-and-S3.jpg)
Q. An exploratory well encountered three reservoir formations S1 (perfectly cemented), S2 (poorly cemented) and S3 (fractured). The Formation Factor (F) is governed by the equation ๐น = ๐๐โ๐, where โ๐โ is the porosity and โmโ is the cementation factor. The constant โaโ, linked to tortuosity is assumed to be 1 for all the formations. The log-log plot between Formation Factor (F) and porosity (๐) is shown.
![](https://www.gkseries.com/blog/wp-content/uploads/2023/09/Screenshot-746.png)
Which one of the following represents the correct match of the formations with their respective plots?
(A) S1-P, S2-Q, S3-R | (B) S1-R, S2-P, S3-Q |
(C) S1-P, S2-R, S3-Q | (D) S1-R, S2-Q, S3-P |
Ans: S1-R, S2-Q, S3-P