Numerical simulation of the sucker-rod pumping system

The sucker rod pump is an artificial lift method frequently applied in onshore petroleum wells. This system can be described using a numerical simulation based on the behavior of a rod string. In the past, the elastic behavior of the rod string made it difficult to model the system. However, since t...

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Main Authors: Oldrich Joel Romero, Paula Almeida
Format: Article
Language:English
Published: Universidad Nacional de Colombia 2014-09-01
Series:Ingeniería e Investigación
Subjects:
Online Access:https://revistas.unal.edu.co/index.php/ingeinv/article/view/40835
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author Oldrich Joel Romero
Paula Almeida
author_facet Oldrich Joel Romero
Paula Almeida
author_sort Oldrich Joel Romero
collection DOAJ
description The sucker rod pump is an artificial lift method frequently applied in onshore petroleum wells. This system can be described using a numerical simulation based on the behavior of a rod string. In the past, the elastic behavior of the rod string made it difficult to model the system. However, since the 1960s and with the advent of digital computers, it has been modeled numerically. The rod string be-haves like a slender bar, and thus, the propagation of elastic waves along the bar can be represented by a one-dimensional equation. Gibbs (1963) presented a mathematical model based on the wave equation, which is described on the basis of the analysis of forces on the rod string and is incorporated into a boundary value problem involving partial differential equations. The use of the finite differ-ence method allows for a numerical solution by the discretization of the wave equation developed in the mathematical formulation with appropriate boundary and initial conditions. This work presents a methodology for implementing an academic computer code that allows simulation of the upstroke and downstroke motion of the rod string described by the wave equation under ideal operating conditions, assuming a harmonic motion of the rod at one end and downhole pump at the other end. The goal of this study is to generate the downhole dynamometer card, an important and consolidated tool that controls the pump system by diagnosing oper-ational conditions of the downhole pump.
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spelling doaj.art-becd77d9cc0b465dae5bdc53ad218a942022-12-22T01:54:58ZengUniversidad Nacional de ColombiaIngeniería e Investigación0120-56092248-87232014-09-0134341110.15446/ing.investig.v34n3.4083538409Numerical simulation of the sucker-rod pumping systemOldrich Joel Romero0Paula Almeida1Professor at Federal University of Espirito Santo (UFES)M Sc student at Universidade Estadual do Norte Fluminense (UENF)The sucker rod pump is an artificial lift method frequently applied in onshore petroleum wells. This system can be described using a numerical simulation based on the behavior of a rod string. In the past, the elastic behavior of the rod string made it difficult to model the system. However, since the 1960s and with the advent of digital computers, it has been modeled numerically. The rod string be-haves like a slender bar, and thus, the propagation of elastic waves along the bar can be represented by a one-dimensional equation. Gibbs (1963) presented a mathematical model based on the wave equation, which is described on the basis of the analysis of forces on the rod string and is incorporated into a boundary value problem involving partial differential equations. The use of the finite differ-ence method allows for a numerical solution by the discretization of the wave equation developed in the mathematical formulation with appropriate boundary and initial conditions. This work presents a methodology for implementing an academic computer code that allows simulation of the upstroke and downstroke motion of the rod string described by the wave equation under ideal operating conditions, assuming a harmonic motion of the rod at one end and downhole pump at the other end. The goal of this study is to generate the downhole dynamometer card, an important and consolidated tool that controls the pump system by diagnosing oper-ational conditions of the downhole pump.https://revistas.unal.edu.co/index.php/ingeinv/article/view/40835Rod stringsucker rod pumpdynamometer cardspetroleum artificial liftfinite difference method.
spellingShingle Oldrich Joel Romero
Paula Almeida
Numerical simulation of the sucker-rod pumping system
Ingeniería e Investigación
Rod string
sucker rod pump
dynamometer cards
petroleum artificial lift
finite difference method.
title Numerical simulation of the sucker-rod pumping system
title_full Numerical simulation of the sucker-rod pumping system
title_fullStr Numerical simulation of the sucker-rod pumping system
title_full_unstemmed Numerical simulation of the sucker-rod pumping system
title_short Numerical simulation of the sucker-rod pumping system
title_sort numerical simulation of the sucker rod pumping system
topic Rod string
sucker rod pump
dynamometer cards
petroleum artificial lift
finite difference method.
url https://revistas.unal.edu.co/index.php/ingeinv/article/view/40835
work_keys_str_mv AT oldrichjoelromero numericalsimulationofthesuckerrodpumpingsystem
AT paulaalmeida numericalsimulationofthesuckerrodpumpingsystem