H. KAZEMI C.R.VESTAL MEMBERS SPE-AIME G. DEANE SHANK An efficient, three -dimensional, three -phase, multicomponent, numerical reservoir simulator was developed to study petroleum reservoirs where interphase mass trans fer is important. Flow equations have a volume balance on the water phase and a mole balance on the vapor-liquid hydrocarbon phases. Additional equations include the capillary pressure, phase equilibrium, and saturation relations. Flow equations, in finite-difference form, are combined to obtain an implicit equation for the oil-phase pressure, an explicit equation for the over-all composition of each hydrocarbon component, an explicit water saturation equation, and explicit oil-gas saturation equations that satisfy thermodynamic equilibrium. Equations for oil pressure, water saturation, hydrocarbon compositions, and oil-gas saturations are sequentially solved in an iterative loop until convergence is achieved. The simplicity of the sequential solution algorithm presented here is believed to be a new contribution. Furthermore, if thermodynamic inconsistencies appear in the entry data, these can be detected readily from the pressure and other equations in the sequential algorithm.
YouTube Fridays devotes a small fraction of class time to student-selected videos related to the course topic. The students then write and solve a homework-like problem based on the events in the video. Five recent pilots involving over 400 students have developed a database of videos and questions that reinforce important course concepts like energy balances and phase behavior. Additional pilots from the 2010-2011 academic years will be included in the talk. A set of example problems and videos will be presented from a sophomore level engineering thermodynamics course and a sophomore level material and energy balances course. Student evaluations found a vast majority (79%) of the students felt better at relating real world phenomena to thermodynamics from participating in YouTube Fridays. Overall, YouTube Fridays is a student led activity that provides practice of problem solving on open-ended, course related questions.
An efficient black-oil simulator based on a two-pseudocomponent representation of standard hydrocarbon physical-property data has been developed. This simulator solves the differential equations describing three-phase flow in a porous medium for black-oil, volatile-oil, condensate, and dry-gas systems. The fluid system consists of two-pseudo components-separator gas and stock-tank oil-and water. Descriptive equations are obtained by writing molar balances for the water phase, the stock-tank oil component in the hydrocarbon vapor and liquid phases, and an overall balance in the hydrocarbon vapor and liquid phases. The set of equations is solved by use of either a sequential method or a fully implicit method. The mathematical formulation allows rigorous simulation of reservoir problems involving variable bubblepoint or dewpoint pressures. Practical aspects, such as comparing the simulator physical property data to the laboratory PVT tests, performing flash calculations, and calculating phase boundary pressures, are discussed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.