Modeling Water Injectivity Tests under Multiple Rate Schedule: An Approximate Solution

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
J. L. F. B. Neto, S. Pesco, A. B. Barreto Jr
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引用次数: 0

Abstract

An injectivity test consists of continuously injecting a phase (water or gas) into an oil-saturated reservoir during a period. According to the analysis of the wellbore pressure behavior, this procedure estimates reservoir parameters, such as permeability and skin factor, and the volume of recoverable oil. In this context, this study proposes an approximate analytical solution for the pressure behavior during a water injectivity test on a multilayer reservoir considering multiple injection flow rates. The accuracy of the proposed solution was evaluated through comparison with a commercial finite-difference-based flow simulator in different scenarios. The results indicate a considerable agreement between the data provided by the numerical simulator and the proposed model. In addition, we successfully estimated the equivalent reservoir permeability using the proposed model with satisfactory results.
多速率下的注水试验模型:一个近似解
注入性测试包括在一段时间内连续向含油油藏注入一相(水或气)。该程序通过对井筒压力动态的分析,估算储层参数,如渗透率、表皮系数和可采油量。在此背景下,本研究提出了考虑多种注入流量的多层油藏注水试验过程中压力变化的近似解析解。通过与商用有限差分流动模拟器在不同场景下的对比,评估了该方案的准确性。结果表明,数值模拟器提供的数据与所提出的模型之间有相当大的一致性。此外,利用该模型成功地估算了等效储层渗透率,结果令人满意。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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