Comparing analysis for different approaches of geomechanical modeling to design hydraulic fracturing

Quality project of hydraulic fracturing has big actuality at current time. Especially it is important for hard-to-recover reservesand formations with nearby water saturated reservoir or gas-oil and water-oil contacts. Breakthrough of fracture to water saturated reservoirs increases water production and decline well profitability. Furthermore actual determination of geometry parameters can elucidate reasonability to use hydraulic fracturing for certain reservoirs. Hydraulic fracturing efficiency depends on adequacyof one-dimension geomechanical models and influences investing decisions and development strategy.
Materials and methods
One-dimensional geomechanical modeling,frac simulation - MFrac, geological modeling - Petrel, specialized core study.
Results
The article is about comparing analysisfor different approaches of geomechanical modeling performed by LLC “NOVATEK STC”.
Сonclusions
Results of mapping methods show the importance of accuracy in determining the height and positioning of the fracture depth inconnection with the presence of overlying water-saturated reservoir, a breakthrough of fracture inthat is not allowed. Calibration one-dimensional geomechanical model in such cases allows to choose the optimal design of the operation,and optimize the proppant pumping schedule without a risk to breakthrough in nearby aquifer. The accuracy of frac model patterns is reducedto having a full set of baseline data (well logging suite, specialized core study, full-wave acoustic logging). But, in the absence of one of the elements may reduce errors due to applicationof an integrated approach.