Design, environmental impact and performance of energized fluids for fracturing oil and gas reservoir rocks of Central Europe Acronym: ENFLUID Project Promoter – Politechnika Śląska Norwegian Partner – University of Stavanger Polish Partner – Oil and Gas Institute - NRI Project duration: June 2013 – April 2016 Budget and received funding: PLN ( Euro) PROJECT KICK-OFF CONFERENCE Polish-Norwegian Research Programme Core 2012 Call & CCS 2013

Project objectives Hydraulic fracturing is an engineered propagation of fractures in a rock by means of fluids injected at high pressure into a well. It is essential for producing hydrocarbons from unconventional formations. To avoid formation damage (swelling of clay minerals ) by a waterbased fracturing fluid - substituting water by gases is possible. Such fracturing fluids are called energized fluids. Development of optimal energized fracturing fluid compositions for use in oil and gas reservoir rocks formations in CE 1. Petrophysical, mineralogical, and geochemical analyses in formulating the criteria screening the energized fluid fracturing and EOR 2. Effects of fluids influence on the geochemistry of the formation 3. Composition of fluid for stimulation of different formations of CE 4. Mutual interactions between the fluids and the fractured rock 5. Impact of designed fluids on the formation damage 6. Flowback – treatment or recycling PROJECT KICK-OFF CONFERENCE Polish-Norwegian Research Programme Core 2012 Call & CCS 2013

Expected results WP1 - Acquisition and preparation of samples, petrological and geochemical analyses – INIG-PIB – status - achieved WP2 - Preparation and experimental evaluation of fluid systems – INIG-PIB – status - ongoing WP3 -Predicting geochemical reactions in fluid-rock systems, based on experiments and numerical modeling - SUT– status - ongoing WP4 - Fluid/Rock Interaction – UiS – status - ongoing WP5 - Formation Damage Evaluation - UiS INIG-PIB SUT – status - ongoing WP6 - Selection and testing the backflow treatment methods – SUT – status - projected PROJECT KICK-OFF CONFERENCE Polish-Norwegian Research Programme Core 2012 Call & CCS 2013

Methodology T.1.2. Mineralogical and geochemical analysis before- and petrophysical analysis (porosity, permeability) before and after hydraulic operations T.2.2. Experimental evaluation of physical properties of prepared energized (CO2, N2) fracturing fluid systems T.2.5. Analysis of facturing fluid filtration under dynamic and static conditions T.3.6. Autoclave experiments, reproducing fracturing fluid–rock geochemical interactions T.3.7. Geochemical modeling of the reactions in fracturing fluid–rock systems T. 4.3 Study of interactions in gas-fluid-rock systems controlling stability of energized fracturing fluids (foam stability) and influencing permeability of the formation T. 5.3 Evaluation of effectiveness of stimulation treatment T.6.1. Assessment of the flowback waters composition T.6.2. Selection of the best available treatment for the flowback waters PROJECT KICK-OFF CONFERENCE Polish-Norwegian Research Programme Core 2012 Call & CCS 2013

Thank you for your attention PROJECT KICK-OFF CONFERENCE Polish-Norwegian Research Programme Core 2012 Call & CCS 2013