About this webinar

The ultimate aim of hydraulic fracturing treatments in horizontal wells is to increase the flow and conductivity of unconventional oil/gas reservoirs by creating a long fracture in the order of 100 to 1,000 ft and conductive fracture width in the order of a tenth of an inch. The success of the process strongly relies on selecting appropriate slurry fluids and proppants since these factors govern the proppant transport to place and fill the conductive pathways connecting with the proppant particles. Furthermore, the effective behavior of the proppant distribution is essential to understand especially in case of tight formations to increase the well productivity and economics. Therefore, fracture fluids and proppants characterization are crucial parameters that require detailed study in order to achieve predictable and reliable performance as well as avoiding the early proppant settling near the wellbore.

Several types of farcing fluids have been applied, including the use of slickwater, linear gel, crosslinked in the USA basins. The success of a fluid selection process depends primarily on the length of the fracture and proppant distribution and placement in fracks. Thus, understanding fluid composition, ability to create fractures, the capability to carry and transport proppant deep into the fracture, easy to flow back with minimal damage effect through production from shale formation is the key a crucial successful fracking treatment. current practice in hydraulic fracturing is to use alternative fluid systems that are cost-effective and have a less environmental impact, such as fluids that utilize high viscosity friction reducers (HVFRs), which typically are high molecular weight polyacrylamides. Moreover, the recent and rapid success of using HVFRs in hydraulic fracturing treatments is due to several advantages over other fracture fluids (e.g. linear gel), which include better proppant carrying capability, induce more complex fracture system network with higher fracture length, and overall lower costs due to fewer chemicals and less equipment on location.

This presentation will focus on the use of recent advancements of fracturing fluids to characterized fractures created in hydraulically stimulated reservoirs, focusing on HVFRs. The performance of HVFRs in horizontal wells in unconventional reservoirs depends largely on the quality of the water conditions. Comparing to the traditional hydraulic fracture fluids system, the presentation will show the potential advantages that HVFR fluids can offer, including superior proppant transport capability, almost 100% retained conductivity, around 30% cost reduction, and logistics, such as minimizing chemicals usage by 50% and operation equipment on location, reduce water consumption by 30%, and environmental benefits.

This presentation will outline the recoverable tight oil reserves, stimulation technologies, advanced technology in fracturing fluids. The presentation will cover a field case study in West Texas (Permian Basin) Wolfcamp study focused on evaluating the performance of fracturing fluid (HVFRs) and the compatibility of HVFRs with the Permian Basin produced water economically and efficiently that used for proppant transportation and pressure reduction at low dosage.

Abdulaziz Ellafi

Abdulaziz Ellafi

Presenter Bio

Abdulaziz Ellafi is a PhD Candidate in the petroleum engineering department at the University of North Dakota. He has a Master’s degree in petroleum engineering from Missouri University of Science and Technology and his Bachelor’s degree from the University of Tripoli, Libya. The field of his research: reservoir engineering applications related to conventional and unconventional reservoirs. His work and research include stimulations/hydraulic fracturing, frac-fluids “HVFRs” in high TDS environment, enhanced oil recovery (EOR), transient pressure, and rate analysis (PTA/RTA), and reservoir simulations. He has several research papers in hydraulic fracturing technology, unconventional shale reservoirs, CO2-EOR, and conventional gas condensate reservoirs.

Date & Time

Monday, 7 September 2020 |
12 pm GMT / 3 pm KSA

COST

Free of charge.

PRESENTER

Abdulaziz Ellafi

PhD Candidate
University of North Dakota