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首页> 外文学位 >HOT FLUID INJECTION INTO HEAVY OIL RESERVOIRS INTERCEPTED BY A STATIONARY VERTICAL FRACTURE.
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HOT FLUID INJECTION INTO HEAVY OIL RESERVOIRS INTERCEPTED BY A STATIONARY VERTICAL FRACTURE.

机译：将热流体注入重油储层，该油层被静止的垂直裂缝截留。

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摘要

An analytical and a numerical model for the injection of hot fluid into stationary vertical fractures are developed. For both models, the fracture is assumed to have infinite conductivity and fully penetrate the reservoir thickness. The conductive heat flux in the overburden and underburden is considered one dimensional and symmetric with respect to the reservoir.; The analytical model solves the energy equation in an infinite system with constant properties of the system and zero thermal conductivity in the reservoir. Fluid flow in the reservoir is considered elliptical which is physically more sound than the linear models described in the literature. The obtained solution for the temperature distribution is used to develop expressions for the thermal efficiency and oil rate and recovery. Although limited in scope because of necessary restrictive assumptions, these expressions have proved useful in the preliminary analyses of hot fluid injection projects.; The numerical model involves the simultaneous solution of mass and energy balances for an oil-water system in two dimensions. The model utilizes the IMPES method of solution and suggests a new procedure for eliminating the saturations from the mass and energy balance equations. This procedure is direct and requires much less computational work than Gaussian elimination used by previous investigators. The relative permeabilities and enthalpies at the grid boundaries are shifted upstream in order to avoid possible oscillations in the solutions.; Previous numerical models of the injection of hot fluid into vertically fractured systems have exclusively dealt with the elastic behavior of the reservoir rock during fracturing. Uniqueness this model stems from its concern with the petroleum engineering aspects of the process. The primary objective of this study is to (i) present a detailed description in the numerical and analytical models, (ii) analyze pressure response in the fracture and temperature distribution in the reservoir, (iii) study effects of injection conditions and fluid and reservoir characteristics on the performance of hot water injection, including oil recovery and thermal efficiency, and (iv) examine the analytical solution for a practical range of injection temperature, oil viscosity and reservoir permeability.
机译：建立了将热流体注入固定垂直裂缝的解析模型和数值模型。对于这两个模型，假定裂缝具有无限的电导率并完全穿透储层厚度。上覆岩层和下覆岩层中的传导热通量被认为是一维的，并且相对于储层是对称的。该分析模型求解具有系统恒定特性且储层热导率为零的无限系统中的能量方程。储层中的流体流动被认为是椭圆形的，它在物理上比文献中描述的线性模型更合理。所获得的温度分布解用于开发热效率，油率和采收率的表达式。尽管由于必要的限制性假设而限制了范围，但这些表达式已被证明可用于热流体注入项目的初步分析。数值模型涉及二维油水系统的质量和能量平衡的同时求解。该模型利用了IMPES解法，并提出了一种从质量平衡和能量平衡方程中消除饱和度的新方法。该过程是直接的，比以前的研究人员所使用的高斯消去方法所需的计算量少得多。网格边界的相对渗透率和焓向上游移动，以避免溶液中可能出现的振荡。以前的将热流体注入垂直裂缝系统的数值模型专门处理了压裂过程中储层岩石的弹性行为。该模型的独特性源于其对流程中石油工程方面的关注。这项研究的主要目的是（i）在数值和分析模型中进行详细描述，（ii）分析裂缝中的压力响应和储层中的温度分布，（iii）研究注入条件以及流体和储层的影响热水注入性能的特征，包括油采收率和热效率，以及（iv）在实际温度范围内检查注入温度，油粘度和储层渗透率的分析解决方案。

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  • 作者

    AGENA, BASHIR M.;

  • 作者单位

    The University of Tulsa.;

  • 授予单位 The University of Tulsa.;
  • 学科 Engineering Petroleum.
  • 学位 Ph.D.
  • 年度 1986
  • 页码 190 p.
  • 总页数 190
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 石油、天然气工业;
  • 关键词

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