Stochastic acquisition systems based on RTH method

Abstract

Conventional seismic acquisition systems deal with, as a rule, regular topology of sources and receivers layout because it is oriented to a horizontal structure of media. However, the need to involve so-called unconventional hydrocarbon deposits in development requires the use of more complex media models that describe, for example, structures such as fractured-cavernous oil traps. As a result, a new seismic processing methods are emerging, which, in turn, require changes in the seismic recording systems themselves. It turns out that stochastic seismic acquisition systems, which differ from conventional regular systems by randomly placing both sources and receivers, are optimal from the point of view of estimating environmental parameters for new methods of vector seismic exploration on scattered waves. The purposes of paper to describe the features of the one of such approach called Reverse Time Holography and show the new possibilities of its acquisition systems. We demonstrate that substantial reductions in both the number of sources and receivers can be achieved without compromising the quality of seismic attributes using the new approach. Through empirical validation we illustrate that sources reduction can reach up to 8 times, while receivers reduction can reach up 3 times.