Abstract
An approach for post-frac production profiling has been presented in this study by integrating a fracture model with a reservoir simulation model for a well drilled in tight sand reservoir of Lower Indus Basin in Pakistan. The presented integrated approach couples the output from the fracture growth model with a reservoir simulation model to effectively predict the behavior of a fractured reservoir. Optimization of hydraulic fracturing was done efficiently through the work presented in this study. The integrated model was used to perform various sensitivities. The production profiles obtained for each case were subsequently used to determine the most profitable case, using an economic model.
Highlights
Pakistan has been blessed with tremendous amount of hydrocarbon resources including tight gas
Tight gas resources are present in various formations of Pakistan such as Sulaiman Fold belt, Middle Indus Basin, and Kirthar Fold belt, Potwar region, Lower Indus Basin, and Offshore areas
Mahmud at el. reported permeabilities between 0.02 and 1.17 mD and porosities between 8 and 15% in their study performed on samples acquired from Lower Nari Sandstones of Southern Indus Basin and Indus Offshore (Sheikh 2012)
Summary
Pakistan has been blessed with tremendous amount of hydrocarbon resources including tight gas. The amount of tight gas resources in Pakistan are in the range of 24 TCF to 40 TCF (Alam 2011). Predicting the effect of a designed hydraulic fracturing job on reservoir performance is a major technological challenge for reservoir engineers (Cohen et al 2012). Production predictions for a designed hydraulic fracturing job are done through numerical methods (Ai et al 2018; Suboyin et al 2020). Huang et al (2018) presented a numerical method to predict the production performance of a hydraulic fractured shale gas well under different scenarios. Guo et al (2019) studied the effect of fracturing parameters on tight gas production using a prediction model. Commercial hydraulic fracture simulator FRACPRO and reservoir simulator Eclipse have been utilized in this study to design and simulate a hydraulic fracture treatment
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