Seismic Velocities in your LFM
My earlier posts on a-priori low frequency models (LFMs) generated several great discussions – too many to consider here. But I’d like to comment on one in particular: using seismic velocities to complement (or even replace) well-log interpolated models. This is a great example of integrating all available data to improve your inversion results – […]
Are flat spots always flat? No!!
Reading about DHI’s in this month’s AAPG Explorer (July 2025) got me to thinking about flat spots. There are many reasons why a flat spot – the seismic signature of a subsurface fluid contact – might not be flat. See this image of a flat spot that’s not very flat (“Detection of hydrocarbons using non-bright-spot […]
Final thoughts on building low frequency models
In earlier posts, I discussed why LFM’s are necessary, and key issues to consider when building them: — Which horizons to include— Which wells to include— How to populate the log data Today, I share some thoughts on selecting wells and populating them into 3D low frequency models. My main point on selecting wells: choose as […]
Thoughts on Low Frequency Models
Lately I’ve been thinking about low frequencies, in the context of seismic inversion and low frequency models (LFMs). There are many great posts on LinkedIn, plus tons of good articles online. Today I’ll start a little series of posts with thoughts on LFM’s. WHY LOW FREQUENCY MODELS? Since seismic data is bandlimited (no signal below ~6-10 […]