Agile blog highlights
Agile Geoscience blog reading for the uninitiated. These links will fast track and kickstart AAPG Imperial Barrel Award (IBA) contestants and exploration teams.
The Agile Interpreter's Canon — a list of strategy and guidelines for seismic interpretation.
How to create your own time scale — build and editable and fit-for-purpose stratigraphic column.
How to make a stratigraphic column — build and editable and fit-for-purpose stratigraphic column.
Visual crossplotting — use color spaces for multiple attributes and co-located images for dramatic comparisons and maps.
How to cheat at spot the difference — take the hard work out of visual inspection.
The integration gap — a graphical representation of empirical and disciplinary silos in the subsurface.
Wherefore art thou, expert? — long live the unvested generalist!
How to cheat — using the rock physics cheatsheet.
Software and images you might need
Geophysics apps FTW — calculators and geoscience applications for Android.
Volumetrics on the back of a digital envelope — volume* Android app.
Building tune — building and Android app for studying thin bed resolution and tuning.
Tuning geology — wedge models for bed thickness and determining seismic tuning effects.
Reuse and recycle — awesome graphics from Matt Hall's petroleum geology course. Yours to augment and build on!
Polarity cartoons — what is a peak and what is a trough? Every seismic display should have not only a colorbar in the legend, but also the polarity displayed. Don't leave your audience guessing.
How big is that volume? — Wolfram Alpha widget for computing the disk size of seismic data.
How to choose an image format — pick the right image format for the job.
When to use vectors not rasters — difference between vector graphics and raster images.
A is for amplitude - the first and foremost of seismic attributes.
B is for bit depth - know the difference between resolution and precision in this great example.
C is for clipping — understanding data ranges and the losses in clipping.
D is for domain — back an forth between the seismic dimensions, and the earth's three spatial dimensions.
E is for envelope — a seismic trace attribute
E is for envelope 2 — a seismic trace attribute with real example
F is for frequency — definition of frequency and it's expression in common geophysics signals.
G is for gather — acquisition and processing jargon
H is for horizon — an overly mis-used and abused jargon word.
I is for integrated trace — another seismic attribute. Kind of like a quick and dirty relative impedance inversion.
M is for migration - the process of refining the focus of a seismic image. With great diagrams and gotchas.
O is for offset - Both a parameter and a dimension used a throughout seismic data processing.
Concepts you need to know
What is a Darcy? — Build your intuition with this permeability example
What is shale? — definition
What is AVO? — introduction to the AVOAmplitude vs Offset effect.
What do you mean by average? — be specific about how you do basic statistics
Location, location, location — information you need to properly locate a point on the earth.
Rocks, pores, and fluids — The basics of formation evaluation, and the so-called Triple Combo.
The effective medium — The whole is not attained by the disparate measurement of it's parts.
Philosophy and intuition builders
Confirmation — bias in geoscience
Must read geophysics — three papers that will change the way you think.
Will this change anything? — a message to consider with every endeavor
Smaller than they look — numbers, figures, and phenomena outside our normal levels of comprehension
Reliable predictions of unlikely geology — Bayesian statistics with nice examples.
Shooting in the dark — precision, accuracy, reproducibility are all measures of uncertainty.
Four days of oil — an example that will stick. On how much the world consumes in a four day period.
Innovations of the decade — great achievements in that last decade.
Innovations of the decade to come – what we might expect.
Measuring value — how does your professional work affect the bottom line?
More than a blueprint — seeing is believing, but in the case of the subsurface, seeing can be misleading.
The power of stack — concept of increasing signal to noise raio.
Species identification for the rock kingdom - empirical taxonomy.
Bring it into time — the travel time domain
On brevity — effective in writing, presenting and working.
What is unconventional? — definitions of the buzzword.
Shale vs tight — our most clicked blog post.
Great geophysicists #3 — dispersion phenomena.
The scales of geoscience — graphic of spatial scales of earth processes.
Seeing red – some aspects of what makes an effective figure.
Pair picking — a plea for working as a tag-team of interpreters.
Are you a poet or a mathematician? — words of estimative probability
McKelvey's reserves and resources — improved graphic that battles against ambiguity in communication.
Please sir may I have some seismic petrophysics? — what petrophysics needs to offer geophysicists and seismic interpreters.