EVALUATING FUTURE OIL WELL INFLOW PERFORMANCE RELATIONSHIP BETWEEN PROPOSED METHOD AND EICKMEIER’S METHOD BACHELOR THESIS TIARA AMARTYA SALSABILLA 12218090 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 2022 EVALUATING FUTURE OIL WELL INFLOW PERFORMANCE RELATIONSHIP BETWEEN PROPOSED METHOD AND EICKMEIER’S METHOD BACHELOR THESIS TIARA AMARTYA SALSABILLA 12218090 Submitted as partial fulfillment of the requirements for the degree of BACHELOR OF ENGINEERING in Petroleum Engineering study program Approved by: 1 EVALUATING FUTURE OIL WELL INFLOW PERFORMANCE RELATIONSHIP BETWEEN PROPOSED METHOD AND EICKMEIER’S METHOD Tiara Amartya Salsabilla*, Amega Yasutra**, and Pahala Dominicus Sinurat*** Copyright 2022, Institut Teknologi Bandung Abstract The ability of a reservoir to deliver well fluid decreases over time as a result of the decrease in reservoir pressure due to depletion. The prediction on future of the Inflow Performance Relationship (IPR) becomes necessary to avoid any problems during the production phase. In an unconventional reservoir, the low permeability affects the time for reservoir to reach stabilized time. In practice, a well testing is only carried out maximum of 24 hours. The limited time of well testing causes almost impossible for the reservoir to reach the stabilization time, so that the data obtained are still in a transient condition. Meanwhile, the Eickmeier’s (1968) method for constructing the future IPR curve assumes the data used is in stabilized condition. The equation for predicting the future IPR is proposed by looking at the influence of the results using Eickmeier’s (1968) method in constructing future IPR and then compared with the existing method, such as the Sukarno’s (1986) method. This study mainly discusses about the evaluation of the future IPR by comparing the use of the equation of the proposed method and the Eickmeier’s (1968) method by first calculating the IPR curve in the present condition with transient data. The IPR curve in the present condition was calculated using the method proposed by Liviana in a previous study. Liviana proposed a method to predict stabilized oil well inflow performance relationship in present condition for unconventional reservoir. The obtained Absolute Open Flow (AOF) value will be used in subsequent calculations to construct future IPR curve using the equation of the proposed method and Eickmeier’s (1968) method then compared with Sukarno's (1986) method . Keywords: Transient Data, Future Inflow Performance Relationship, Eickmeier’s Method, Stabilized Sari Kemampuan reservoir untuk mengalirkan fluida sumur menurun seiring berjalannya waktu sebagai akibat dari penurunan tekanan reservoir akibat deplesi. Peramalam kurva Inflow Performance Relationship (IPR) di masa mendatang menjadi penting untuk dilakukan agar operasi produksi yang telah direncakan tidak menimbulkan masalah. Pada reservoir non-konvensional, permeabilitas yang dimiliki rendah sehingga memengaruhi waktu untuk reservoir mencapai waktu stabil. Sedangkan pada praktiknya, pengujian sumur hanya dilakukan maksimum selama 24 jam.