When it comes to seismic inversion and the recent application of it in depth conversion principles, most would be surprised to know that the technique is actually well over 40 years old and is known, in some iteration, to even the most experienced geologists and petro physicists.
Seismic Inversion, over this 40 year period, has evolved, changed, and improved in myriad ways to truly afford valuable insight into a number of factors regarding the ground underneath us via increased utility in iteration after iteration. From working out principles of the earth such as lithology, to the porosity of the rocks below, seismic Inversion is a comprehensive way of learning the secrets of everything underneath our feet.
This of course has a world of application in the realm of seismic inversion- which by far exceeds the older seismic reflection method which was only really up to the task of identifying structures. At this point, this wasn’t enough and meant that seismic inversion in itself wasn’t considered its own process – more like a complementary process which was purely optional considering there were so many other ways of identifying the exact same thing.
Nowadays, this isn’t the case at all. Seismic Inversion has grown considerably and been improved upon year after year, and all manner of things have come to light, only capable of being found with seismic inversion.
Back in old times, it was not known that seismic reflection in itself could even hold useful information about the earth below – and now there are a number of processes and algorithms which can illuminate details such as porosity as well as liquids contained within said rocks.
This information is correlated with the older seismic inversion algorithms in order to provide a more-or-less accurate solution to geological issues. Coloured inversion, as well as simulated annealing inversion are relatively new processes which are part of seismic packages, and can derive layered impedance layers from seismic inversion models.