酸化/刺激

模型捕获水平井完井中碳酸盐基质酸化

本研究引入了一个详细的模型来捕获碳酸盐岩地层中完成的复杂水平井中酸流的物理和化学性质。

大型流动回路。
图 1——大规模流动回路。
资料来源:IPTC 23178。

完整的论文提出了一个经过广泛验证的模型,用于模拟碳酸盐岩地层中从井口到虫洞尖端的酸流。该模型考虑了上完井井眼和下完井井眼的水力学、阀门压降、环空流动和虫孔生长。这项工作中引入的综合模型为增产工程师提供了可靠的工具,以在复杂的水平井完井中设计成功的酸增产作业。

介绍

虫洞生长和相应表皮的预测和分析依赖于预测储层面压力的能力以及对多孔介质中酸流的物理和化学的理解。在许多情况下,必须根据地表处理压力来预测储层工作面压力。

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原文链接/JPT
Acidizing/stimulation

Model Captures Carbonate Matrix Acidizing in Horizontal Well Completions

This study introduces a detailed model to capture the physics and chemistry of acid flow in complex horizontal wells completed in carbonate formations.

Large-scale flow loop.
Fig. 1—Large-scale flow loop.
Source: IPTC 23178.

The complete paper presents an extensively validated model to simulate acid flow from the wellhead to the wormhole tip in carbonate formations. The model accounts for upper and lower completion wellbore hydraulics, pressure drop across valves, annular flow, and wormhole growth. The comprehensive model introduced in this work provides stimulation engineers with a reliable tool to design successful acid stimulation jobs in complex horizontal well completions.

Introduction

Prediction and analysis of wormhole growth and the corresponding skin relies on the ability to predict the reservoir-face pressure and the understanding of physics and chemistry of acid flow in porous media. In many situations, reservoir-face pressure must be predicted from surface treating pressure.

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