I have a text file containing 23 seismic horizons from Petrel, Schlumberger's seismic earth interpretation and modelling tool, using the 2D IESX format. Here are the first few rows:
PROFILE Fault to seafloor TYPE 1 5 By Petrel 2014.2 (64-bit) 2d_ci7m_gf.ifdf m ms
SNAPPING PARAMETERS 5 2 2
4.19846879E+05 4.66812161E+06 1 14 2742.85 5460.00 16382.00 4262 2 276-109::normTOv
4.19840089E+05 4.66813210E+06 1 14 2756.25 5461.00 16383.00 4263 2 276-109::normTOv
4.19833299E+05 4.66814259E+06 1 14 2769.65 5461.00 16384.00 4264 2 276-109::normTOv
4.19826509E+05 4.66815308E+06 1 14 2783.05 5461.00 16385.00 4265 2 276-109::normTOv
4.19819720E+05 4.66816357E+06 1 14 2733.93 5462.00 16386.00 4266 2 276-109::normTOv
4.19812930E+05 4.66817406E+06 1 14 2809.85 5462.00 16387.00 4267 2 276-109::normTOv
...
Each horizon starts with two similar header rows. I'm not too worried about those (but it would be nice to know about them too). I'm more interested in the (400,000 or so) data rows. Here's what I surmise so far:
- (float) — x location
- (float) — y location
- [1-9] (int) — seems to change with each interpreted segment of horizon
- 14 — no idea
- (float) — two-way time
- (float) — no idea
- (float) — no idea
- (int) — CDP or trace number
- 2 — no idea
- (str) — line::dataset
I have look at the application's documentation, to no avail. Does anyone know what the fields are?