1. Let’s say our trap in cross-section view looks like this….
Consider This ….
Let’s say our trap in cross-section view looks like this….
How can we get a rough estimate of the cross-sectional area?
Base 1
Height 1
Slide 16
We will make some assumptions so that we can do some simple calculations
The sketch on the top is a cross-section through our prospect/trap
We will use some simple trigonometry to approximate the cross-sectional area
First we estimate the area of a large triangle formed by the top of the reservoir and the assumed
fluid contact (light grey)
Then we get the area of a smaller triangle formed by the base of the reservoir and the assumed
fluid contact (dark grey)
You know that the area of triangle = ½ base * height
The area of the large triangle minus the area of the small triangle is an approximation of the
cross-sectional area of the reservoir
Base 2
Height 2
Courtesy of ExxonMobil
L14 – Prospect Analysis