APPLICATION OF PRESSURE TRANSIENT ANALYSIS METHODS OF NON- NEWTONIAN FLUID/NEWTONIAN FLUID RADIAL COMPOSITE RESERVOIRS WITH A FINITE-CONDUCTIVITY VERTICAL FRACTURE BACHELOR THESIS Salman Naufal Mutawakkil 12219046 Submitted as partial fulfillment of the requirements for the degree of BACHELOR OF ENGINEERING in Petroleum Engineering study program PETROLEUM ENGINEERING STUDY PROGRAM FACULTY OF MINING AND PETROLEUM ENGINEERING INSTITUT TEKNOLOGI BANDUNG 2023 APPLICATION OF PRESSURE TRANSIENT ANALYSIS METHODS OF NON- NEWTONIAN FLUID/NEWTONIAN FLUID RADIAL COMPOSITE RESERVOIRS WITH A FINITE-CONDUCTIVITY VERTICAL FRACTURE BACHELOR THESIS Salman Naufal Mutawakkil 12219046 Submitted as partial fulfillment of the requirements for the degree of BACHELOR OF ENGINEERING in Petroleum Engineering study program Approved by: Thesis Adviser, Prof. Ir. Taufan Marhaendrajana, M.Sc., Ph.D. NIP.196801171993021001 1 APPLICATION OF PRESSURE TRANSIENT ANALYSIS METHODS OF NON- NEWTONIAN FLUID/NEWTONIAN FLUID RADIAL COMPOSITE RESERVOIRS WITH A FINITE-CONDUCTIVITY VERTICAL FRACTURE Salman Naufal Mutawakkil* and 5WTK.W9FZKFS2FWMFJSIWFOFSF28H5M)** Copyright 2023, Institut Teknologi Bandung Abstract Non-Newtonian fluids are common during almost all upstream oil and gas operation phases, including drilling and production. Non-Newtonian fluids like polymer are promising to be used in enhanced oil recovery processes to improve the sweep efficiency of standard waterflood (Caenn et al., 1989). Better methods for interpreting the polymer’s non-Newtonian behaviors and characteristics and their interaction with the surrounding formation and Newtonian fluid coexistence are needed to overcome the possible loss. Falloff tests have proved to be successful under waterflooding operations to determine the reservoir properties in various banks around injection wells and the location of flood fronts. With better mobility control in polymer flooding, frequently, it simultaneously generates induced fractures. This study aims to apply methods to do pressure transient analysis for non-Newtonian/Newtonian composite reservoirs with finite-conductivity fracture. This interpretation can yield parameters/information such as polymer bank inner radius, rheology (power-law parameter), permeability, skin factor, and transition time. Some fracture properties are also determined in this paper, such as fracture half-length and fracture conductivity. The author employed pressure transient analysis based on the methods from (Lund-Ikoku, 1981) and (Van den Hoek et al., 2012). The resulting parameter and analysis are validated and matched with the model generated from pressure transient analyis software. Keywords: Non-Newtonian Fluid, Finite-Conductivity Fracture, Composite Reservoir Sari Fluida non-Newtonian umum digunakan di hampir semua fase operasi hulu minyak dan gas, termasuk pengeboran dan produksi. Fluida non-Newtonian seperti polimer menjanjikan untuk digunakan dalam proses EOR untuk meningkatkan efisiensi penyapuan waterflood standar (Caenn et al., 1989).