递减/增储交替循环期间依赖枯竭的油藏压实损害评估渐近-卷积模型

IF 2.7 3区 工程技术 Q3 ENGINEERING, CHEMICAL Transport in Porous Media Pub Date : 2024-04-27 DOI:10.1007/s11242-024-02083-y
Fernando Bastos Fernandes, Arthur M. B. Braga, E. Gildin, Antônio Cláudio Soares
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引用次数: 0

摘要

在生产曲线耗竭型油藏中,孔隙坍塌引起的地层机械损伤对油田开发有重大影响。本文提出了一种新的扰动解法,用于在交替加载/卸载循环期间对具有压实效应的依赖枯竭油藏进行瞬态孔隙坍塌滞后建模。非线性水力扩散方程通过一阶扩展技术进行扰动,使用依赖于耗竭的渗透率 k(p) 作为扰动参数,\(\epsilon\)。这项工作中开发的模型的实际用途是识别压力敏感油藏中的流动机制和滞后响应,估算积聚压力,指定石油流速以防止严重的滞后行为,以及在油藏监测期间进行历史匹配。对数-对数分析表明,关井压力对渗透率损失有影响。然而,渗透率损失与其部分恢复曲线之间的比较表明,这种损失小于上一个缩采周期渗透率值的 5(\%\)。导数也被用来计算瞬时渗透损失,其关系为\部分m_textrm{D}/部分t_textrm{D}=k_textrm{D}(p_textrm{D})/部分p_textrm{D}/部分t_textrm{D})。本工作中推导出的解决方案的主要优点是实施简单,可以对孔隙坍塌滞后效应进行实用的图形分析,可以模拟不同的边界条件和油藏设置,并且只要求在偏差系数中输入少量的压力和渗透率场数据。所提出的解决方案可用于选择关井的生产时间,并在生产曲线期间监控足够的石油流量。
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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Asymptotic-Convolution Model for Compaction Damage Evaluation in Depletion-Dependent Oil Reservoirs During Alternating Drawdown/Buildup Cycles

The mechanical formation damage induced by pore collapse within production curve depletion-dependent reservoirs significantly influences oilfield development. This paper proposes a new perturbative solution for transient pores collapse hysteresis modeling in depletion-dependent oil reservoirs with compaction effects during alternating loading/unloading cycles. The nonlinear hydraulic diffusivity equation is perturbed through a first-order expansion technique using the depletion-dependent permeability, k(p) as a perturbation parameter, \(\epsilon\). The practical uses of the model developed in this work are identifying flow regimes and hysteresis responses in pressure-sensitive reservoirs, estimating buildup pressure, specifying oil flow rate to prevent severe hysteretic behavior, and history matching during reservoir surveillance. The log–log analysis shows that the shut-in pressure has an influence on permeability loss. However, the comparisons between the permeability loss and its partial recovery curves show that this loss represents less than 5\(\%\) of the permeability value from the previous drawdown cycle. The derivative was also used to compute the instantaneous permeability loss using the relationship: \(\partial m_\textrm{D}/\partial t_\textrm{D}=k_\textrm{D}(p_\textrm{D})\partial p_\textrm{D}/\partial t_\textrm{D}\). The main advantages of the solution derived in this work are the simple implementation, practical graphical analysis of the pores collapse hysteresis effect, the possibility of simulating different boundary conditions and well-reservoir settings, and the requirements of only a few pressure and permeability field data to input in the deviation factor. The solution proposed can be applied to choose the production time to shut the well and monitor the adequate oil flow rate during the production curve.

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来源期刊
Transport in Porous Media
Transport in Porous Media 工程技术-工程:化工
CiteScore
5.30
自引率
7.40%
发文量
155
审稿时长
4.2 months
期刊介绍: -Publishes original research on physical, chemical, and biological aspects of transport in porous media- Papers on porous media research may originate in various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering)- Emphasizes theory, (numerical) modelling, laboratory work, and non-routine applications- Publishes work of a fundamental nature, of interest to a wide readership, that provides novel insight into porous media processes- Expanded in 2007 from 12 to 15 issues per year. Transport in Porous Media publishes original research on physical and chemical aspects of transport phenomena in rigid and deformable porous media. These phenomena, occurring in single and multiphase flow in porous domains, can be governed by extensive quantities such as mass of a fluid phase, mass of component of a phase, momentum, or energy. Moreover, porous medium deformations can be induced by the transport phenomena, by chemical and electro-chemical activities such as swelling, or by external loading through forces and displacements. These porous media phenomena may be studied by researchers from various areas of physics, chemistry, biology, natural or materials science, and engineering (chemical, civil, agricultural, petroleum, environmental, electrical, and mechanical engineering).
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