Abstrakt: |
Currently, shale is a hydrocarbon-producing rock. Shale is classified as an unconventional reservoir due to its unusual reservoir properties. Among these are relatively low permeability (0.1 mA or less) and relatively low porosity (10% or less). The relatively low permeability was previously a significant obstacle to exploiting the hydrocarbons contained in the oil shale. However, horizontal drilling and hydraulic fracturing techniques have proven to improve fluid flow in low-permeability reservoirs such as shale formations and facilitate hydrocarbon exploration in the shale oil industry. This study aims to determine the effect of the parameters that affect the design of hydraulic fractures using the Response Surface Methodology (RSM) approach. Therefore, it can be known which parameters are best for hydraulic fracturing. This research was conducted on seven parameters, namely in situ stress, fracture conductivity, half-fracture length, fracture distance, fracture width, formation permeability, and Poisson's ratio. A 3-dimensional test simulation model with a grid block size of 66x20x3 on CMG GEM, then run 152 scenarios using CMG-CMOST and sensitivity analysis using Response Surface Methodology (RSM) in Minitab Statistical Software. It was found that the half-length fracture is the most influential parameter at 98.02% followed by with permeability formation 95.19%, permeability formation*permeability formation interaction 92.37%, fracture width 89.54%, fracture half-length*fracture width interaction 86.72%, fracture half-length*fracture half-length interaction 83.89%, fracture half-length* interaction permeability formation 81.07%, fracture width*permeability formation interaction 8.24%, fracture width*fracture width interaction 75.42%, and poisson ratio 72.59%. [ABSTRACT FROM AUTHOR] |