Print Email Facebook Twitter Optimization of Jetted Radial Wells Title Optimization of Jetted Radial Wells Author Troost, Diederik (TU Delft Civil Engineering and Geosciences) Contributor Jansen, J.D. (mentor) Peters, Lies (mentor) Leeuwenburgh, O. (mentor) Degree granting institution Delft University of Technology Programme Applied Earth Sciences Date 2019-01-15 Abstract Jetted radial wells are a relatively new form of hydraulic stimulation for oil and gas wells, where small diameters holes extend radially from a wellbore. This technique for increasing well connectivity could also be applied to geothermal wells. Radials can be freely placed along a backbone well, making the design of an economically viable well plan time intensive. Numerical optimization has been extensively applied to well design and will be applied for the design of a radial well plan. A simple optimization case is used to compare gradient-based and gradient-free optimization for jetted radial optimization, the gradient-free CMA-ES algorithm is chosen for the workflow. In addition to CMA-ES, mixed integer CMA-ES and uncertainty-handling CMA-ES are incorporated in the workflow. Three reservoir cases are evaluated for optimization using these algorithms. The workflow is able to determine well plans with higher NPV in each of these cases though finding a global optimum remains difficult. Subject Petroleum EngineeringgeothermalOptimizationJetted radial wellsCMA-ES To reference this document use: http://resolver.tudelft.nl/uuid:d25e499e-89de-4fa5-b96e-3ada53141754 Embargo date 2019-01-09 Part of collection Student theses Document type master thesis Rights © 2019 Diederik Troost Files PDF Msc_thesis_Diederik_Troos ... _wells.pdf 3.16 MB Close viewer /islandora/object/uuid:d25e499e-89de-4fa5-b96e-3ada53141754/datastream/OBJ/view