Aisyah, Nur
(2021)
Evaluasi Dan Simulasi Fracture Stage Dan Spacing Menggunakan Software CMG (Simulator Gem) Di Sumur Gas Horizontal Pada Unconventional Reservoir.
Other thesis, Universitas Islam Riau.
Abstract
One of the hydraulic fracturing techniques such as multi-stage hydraulic fracturing in horizontal well has been proven to be able to increase well production more efficiently. The multi-stage hydraulic fracturing method can provide significant reservoir stimulation, however, the fracture conductivity obtained is not optimal so that the impact on the recovery factor is less than optimal. This is due to the many parameters that need to be considered, such as the number of fracture stages, fracture spacing, length of horizontal well, fracture geometry and conductivity, injection fluid and propane concentrations and the history of propane injection. This study focuses on discussing the effect of fracture spacing and fracture stage parameters on the cumulative gas production which is simulated using CMG software. The N well is a well that has previously been applied to the multi-stage hydraulic fracturing method by previous researchers, but in this study the sensitivity of the fracture spacing and fracture stage parameters was not carried out. So because these two parameters are parameters that really need to be considered, an evaluation is carried out to get a more optimal cumulative production result. By changing the values of these two parameters, it is found that a higher number of fracture stages and a smaller fracture spacing can increase the cumulative gas production. In this case, from the number of stages as many as 12, 14, 16, and 20 stages, then the fracture spacing as far as 250ft, 300ft, and 350ft, the fracture stage with the number of 20 stages and the fracture spacing as far as 250ft resulted in a more optimal cumulative production compared to other values. So it can be used to evaluate the number of pre-existing fracture stages and fracture spacings.
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