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Type: Thesis
Title: Development of advanced mathematical models for analysis of hydraulic channel fracturing technique
Author: Luong, Hao Thanh
Issue Date: 2018
School/Discipline: School of Mechanical Engineering
Abstract: The channel fracturing technique is a Schlumberger's recent development in the area of hydraulic fracture stimulations, which allows for discontinuous proppant placement within the fracture opening. The discontinuous placement of proppant creates a highly conductive network of interconnected open channels, which can significantly increase the overall fluid conductivity of the fracture. Modelling, analysis and prediction of the fluid conductivity of openings created using the channel fracturing technique is of a great interest in both industrial and research contexts. Subsequently, the main objective of this research is to study the channel fracturing technique. Specific aims include the investigation of the effects of different confining stress, proppant placement patterns, and mechanical properties of the rock formation and proppant on the enhancement of the fluid conductivity. The general methodology adopted in this thesis is based on the Distributed Dislocation Technique, which is a powerful analytical tool for the analysis of fracture problems. To meet the main objective, a number of nonlinear mathematical models were developed to predict the fluid conductivity. These models are presented in separate chapters of this thesis. A number of case studies were considered for typical combinations of mechanical properties of rock and proppant, proppant placement patterns as well as confining stress conditions. It was demonstrated that an appropriate selection of proppant and its placement pattern within the openings can significantly increase the well production rates, which is essentially the ultimate goal of hydraulic fracture stimulations. From practical point of view, the outcomes of this thesis can provide a valuable guidance for designing efficient proppant injection schedules and selecting a suitable proppant type in order to maximise the well productivity, decrease environmental impact as well as to reduce the overall cost of oil and gas recovery, which are currently the main concerns for the relevant industries and government organisations. The main body of the thesis represents a compendium of papers submitted to or published in international journals or conference proceedings. These papers are united by the same topic as well as the research methodology mentioned above. The percentage and contribution of the candidate are specified in the Statement of Authorship for each article with more than one author.
Advisor: Kotousov, Andrei
Khanna, Aditya
Dissertation Note: Thesis (MPhil.) -- University of Adelaide, School of Mechanical Engineering, 2018
Keywords: Channel fracturing
fracture opening
proppant deformation
optimal proppant usage
proppant arrangement
Provenance: This electronic version is made publicly available by the University of Adelaide in accordance with its open access policy for student theses. Copyright in this thesis remains with the author. This thesis may incorporate third party material which has been used by the author pursuant to Fair Dealing exceptions. If you are the owner of any included third party copyright material you wish to be removed from this electronic version, please complete the take down form located at:
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