A Professional Approach to the Study of the Earth’s Interior

Sedimentation Modelling

GeoGrid is the only company in Russia that provides services in modelling of the lithological structure reservoir compaction by the method of process sedimentation modelling

GeoGrid is a leading company in the Russian market for services using the most sought-after techniques in the modern oil and gas industry, namely numerical depositional system modelling.

Presently, geophysical methods have gone far advance in the field of recognition of lithological features of the structure of sedimentary strata. At the same time, there remain significant limitations, which often do not allow us to establish the facial features of sediments with the necessary degree of reliability. For these problems solving the sedimentation modelling process is intended.

This technology is based on the reproduction by the means of mathematical calculations of sedimentation processes and is designed to reconstruct the lithologic-facies and sedimentary structure of the layers.

So that, numerical sedimentation modelling involves computerized sedimentation process reconstruction, allowing improved results for geophysical research, while restoring the lithological structure of formations and defining reservoir properties.

The technology allows us to model a consistent depositional system, while embracing a whole set of complex interrelated processes. It describes the mobilization, transport and deposition of sediments over time, as well as its subsequent erosion and re-deposition. Sedimentary basin evolution is examined dynamically over geological time. Additionally, all of the geological processes controlling sedimentation are interrelated. This allows calculation of the relevant facies composition for each independent sedimentation stage.

Numerical sedimentation modelling analyses sedimentary structure and aids interpretation of the structure of oil and gas targets, as well as mitigating risks during prospecting and exploration.

This technology allows for the probability of reservoirs in sedimentary bodies to be quantified. When combined with seismic data, it allows geological risks during prospecting to be minimised.

The facies model of a reservoir built using process-based sedimentation modelling can be integrated into the technological cycle of basin and petroleum system modelling. Based on mathematical analysis, this allows us to perform risk analysis when predicting whether or not structural, near-fault and stratigraphic traps are filled.

Despite its complexity this technique permits the most reasoned review of the “validity of the experiment” by identifying errors made during initial measurement of the parameters on the site being studied.