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

Geomechanical Modelling

GeoGrid is one of the leading providers of integrated geomechanical modelling services. Its personnel have unique experience in 3D geomechanical modelling.

Geomechanical modelling makes the following possible:

  • Prediction of pore pressures;
  • Determination of cap-rock integrity;
  • Identification of field development challenges;
  • Assessment of reservoir properties;
  • Estimation of in-situ stresses near the well;
  • Optimization of drilling process;
  • Assessment of wellbore stability;
  • Calculation of the optimal wellbore trajectory;
  • Prediction of sand production in a well;
  • Analysis of feasibility of underbalanced drilling;
  • Characterization of a fractured reservoir;
  • Improving development efficiency in a naturally fractured reservoir;
  • Calculation of artificial reservoir creation parameters through hydraulic fracturing;
  • Assessment of the effects of liquid and steam injection into the reservoir;
  • Assessment of reservoir compaction;
  • Analysis of potential surface subsidence;
  • Assess shear strain stresses and the likelihood of casing failure.

Geomechanical modelling is a process of development of a numerical strain-stress state model for geological media, on the basis of which it is possible to calculate the limits of permissible loads.

The well production rate and wellbore stability are key tasks during oil and gas field development. The geomechanical approach provides the answers.

Bringing the growing number of target reservoirs located in complex geological conditions and containing unconventional and hard-to-recover reserves to production requires new technological approaches – geomechanical modelling is one of them.

The widespread application of hydraulic fracturing (fracking) and directional drilling has raised issues relating to the in-situ stress on the reservoirs to be drilled and their rheological properties. Drilling, production, injection, fracturing and other human-induced impacts lead to changes in pore pressure and rock stresses, which cause ground deformation.

Disregarding or performing only a shallow assessment of rock strength parameters results in wellbore instability and accidents. According to global practice, the application of proactive geomechanical modelling using wells and geomechanical monitoring during drilling significantly reduce the accident rate and thus curs the drilling time by 40%.

The key objective of geomechanical modelling is the estimation of rock strength parameters that show elastic behaviour under external and internal physical impacts. The purpose of these calculations is to minimise the risks arising from wellbore drilling, field development and underground gas storage operations. 

Geomechanical modelling provides a forecast of the ground deformation and its variation over the course of the well drilling and development operations in all stages of its life-cycle.GeoGrid provides geomechanical modelling services for different types of wells:

•    reference wells already drilled;
•    planned wells and wells being drilled;
•    development wells.

It also builds 3D stress-strain ground behavior models.

One of the advantages of the GeoGrid Center is the use, along with the most modern world software packages, our domestic software. Mostly for this reason, the quality of the projects being implemented meets all global standards and even outstrips that of many foreign developments. For example, GeoGrid performs coupled 3D geomechanical modelling and reservoir simulation.