Implemented stage fracturing technique to improve oil production in Nubian sandstone of North Gialo, Libya

Sandstone, which is affected by pervasive diagenetic modifications of porosity and permeability. The significant increase in the production
rate after hydraulic fracturing treatment shows the importance of implementing this method for this formation in Libya for optimising
production. And moreover, to gain better recovery of the stored hydrocarbon in this reservoir. The sensitivity of this case that is required
a critical treatment with a precaution investigation during the operation such as High Strength Proppant, type of proppant, sieve size,
conductivity indication, production estimation, Net Present Value, and the comparison between treated and untreated cases. Furthermore,
deeper Nubian Sandstone formation and the treatment temperature up to 149 °C. Therefore, choosing the delayed borate crosslinked fluid by
using Hydroxy Propyl Guar (HPG), gelling agent and special additives designed to enhance the viscosity at a higher temperature, to break
the viscosity at the end of the end of the pump time and good proppant transport. Another benefit of the additives is stable fluid rheology, low
fluid loss properties, and good cleanup properties. Post-stimulation data were collected, and the evaluation was performed in order to
calibrate and improve the current models and future stimulation treatment within the North Nubian Sandstones.