\"Recross linkable Preformed Particle Gel (RPPG) is a novel type of preformed particle gel in which particles can bond together to form a strong bulk gel system after being placed in the target formation. In this research, I systematically evaluated the feasibility of using this product to improve gas flooding conformance for mature reservoirs with conduits or fractures. Two RPPG systems were used for the experiment: a CO2- resistant RPPG (CR-RPPG) synthesized using acrylamide (AM) and 2-acrylamide-2- methylpropane sulfonate acid (AMPS), designed for CO2 flooding; and an acrylamide-co-acrylic acid-based RPPG (LT-RPPG), designed for water flooding. Different experimental apparatuses were designed to quantify and visualize the RPPG phase stability under static and dynamic gel-gas interactions. The RPPG phase stability was evaluated under a different range of injection pressures, gas exposure time, and swelling ratio. Also, the RPPG stability was compared to conventional polymer gel systems (HPAM/Cr (III)) that have been applied in oilfields to control gas injection conformance. The results showed that the RPPG systems were stable under both static and dynamic gel-natural gas interactions and were stable when exposed to an acidic environment with an insignificant total percentage weight loss. The core flooding experiment results demonstrated that the RPPGs exhibited excellent plugging performance, which was closely related to the swelling ratio and the fracture aperture. The robustness of the RPPG systems make it a viable candidate for improving gas flooding processes in mature reservoirs dominated by conformance problems such as void space conduits, fractures, and high permeability channels\"--Abstract, p. iv
","abstract_html":"<p>"Recross linkable Preformed Particle Gel (RPPG) is a novel type of preformed particle gel in which particles can bond together to form a strong bulk gel system after being placed in the target formation. In this research, I systematically evaluated the feasibility of using this product to improve gas flooding conformance for mature reservoirs with conduits or fractures. Two RPPG systems were used for the experiment: a CO<sub>2</sub>- resistant RPPG (CR-RPPG) synthesized using acrylamide (AM) and 2-acrylamide-2- methylpropane sulfonate acid (AMPS), designed for CO2 flooding; and an acrylamide-co-acrylic acid-based RPPG (LT-RPPG), designed for water flooding. Different experimental apparatuses were designed to quantify and visualize the RPPG phase stability under static and dynamic gel-gas interactions. The RPPG phase stability was evaluated under a different range of injection pressures, gas exposure time, and swelling ratio. Also, the RPPG stability was compared to conventional polymer gel systems (HPAM/Cr (III)) that have been applied in oilfields to control gas injection conformance. The results showed that the RPPG systems were stable under both static and dynamic gel-natural gas interactions and were stable when exposed to an acidic environment with an insignificant total percentage weight loss. The core flooding experiment results demonstrated that the RPPGs exhibited excellent plugging performance, which was closely related to the swelling ratio and the fracture aperture. The robustness of the RPPG systems make it a viable candidate for improving gas flooding processes in mature reservoirs dominated by conformance problems such as void space conduits, fractures, and high permeability channels"--Abstract, p. iv</p>","abstract_has_math":false,"creators":["Al Brahim, Ali Abdulmohsen"],"institution":"Missouri University of Science and Technology","degree_name":"Ph. D. in Petroleum Engineering","degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":null,"date_issued":"","date_published":null,"updated_at":"2026-07-24T03:18:18Z","subjects":["Chemical Engineering","Engineering","Petroleum Engineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarsmine.mst.edu/doctoral_dissertations/3262","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Al Brahim, Ali Abdulmohsen"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:type","label":"Dc Type","values":["Dissertation - Open Access"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph. D. in Petroleum Engineering"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Missouri University of Science and Technology"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chemical Engineering","Engineering","Petroleum Engineering"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarsmine.mst.edu/doctoral_dissertations/3262"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["\"Recross linkable Preformed Particle Gel (RPPG) is a novel type of preformed particle gel in which particles can bond together to form a strong bulk gel system after being placed in the target formation. In this research, I systematically evaluated the feasibility of using this product to improve gas flooding conformance for mature reservoirs with conduits or fractures. Two RPPG systems were used for the experiment: a CO2- resistant RPPG (CR-RPPG) synthesized using acrylamide (AM) and 2-acrylamide-2- methylpropane sulfonate acid (AMPS), designed for CO2 flooding; and an acrylamide-co-acrylic acid-based RPPG (LT-RPPG), designed for water flooding. Different experimental apparatuses were designed to quantify and visualize the RPPG phase stability under static and dynamic gel-gas interactions. The RPPG phase stability was evaluated under a different range of injection pressures, gas exposure time, and swelling ratio. Also, the RPPG stability was compared to conventional polymer gel systems (HPAM/Cr (III)) that have been applied in oilfields to control gas injection conformance. The results showed that the RPPG systems were stable under both static and dynamic gel-natural gas interactions and were stable when exposed to an acidic environment with an insignificant total percentage weight loss. The core flooding experiment results demonstrated that the RPPGs exhibited excellent plugging performance, which was closely related to the swelling ratio and the fracture aperture. The robustness of the RPPG systems make it a viable candidate for improving gas flooding processes in mature reservoirs dominated by conformance problems such as void space conduits, fractures, and high permeability channels\"--Abstract, p. iv
"]},{"key":"dc:title","label":"Title","values":["Investigation of Recrosslinkable Preformed Particle Gels for Natural Gas Conformance Control"]}]}],"canonical_facts":{"dc:creator":["Al Brahim, Ali Abdulmohsen"],"dc:description.abstract":["\"Recross linkable Preformed Particle Gel (RPPG) is a novel type of preformed particle gel in which particles can bond together to form a strong bulk gel system after being placed in the target formation. In this research, I systematically evaluated the feasibility of using this product to improve gas flooding conformance for mature reservoirs with conduits or fractures. Two RPPG systems were used for the experiment: a CO2- resistant RPPG (CR-RPPG) synthesized using acrylamide (AM) and 2-acrylamide-2- methylpropane sulfonate acid (AMPS), designed for CO2 flooding; and an acrylamide-co-acrylic acid-based RPPG (LT-RPPG), designed for water flooding. Different experimental apparatuses were designed to quantify and visualize the RPPG phase stability under static and dynamic gel-gas interactions. The RPPG phase stability was evaluated under a different range of injection pressures, gas exposure time, and swelling ratio. Also, the RPPG stability was compared to conventional polymer gel systems (HPAM/Cr (III)) that have been applied in oilfields to control gas injection conformance. The results showed that the RPPG systems were stable under both static and dynamic gel-natural gas interactions and were stable when exposed to an acidic environment with an insignificant total percentage weight loss. The core flooding experiment results demonstrated that the RPPGs exhibited excellent plugging performance, which was closely related to the swelling ratio and the fracture aperture. The robustness of the RPPG systems make it a viable candidate for improving gas flooding processes in mature reservoirs dominated by conformance problems such as void space conduits, fractures, and high permeability channels\"--Abstract, p. iv
"],"dc:identifier":["https://scholarsmine.mst.edu/doctoral_dissertations/3262"],"dc:subject":["Chemical Engineering","Engineering","Petroleum Engineering"],"dc:title":["Investigation of Recrosslinkable Preformed Particle Gels for Natural Gas Conformance Control"],"dc:type":["Dissertation - Open Access"],"thesis:degree_name":["Ph. D. in Petroleum Engineering"],"thesis:institution_name":["Missouri University of Science and Technology"]},"updated_at":"2026-07-24T03:18:18Z"}