成熟领域

流量模拟器优化了报废井的地热提取

本文介绍了使用瞬态流动模拟器评估报废油气井在各种完井情况下可提取的热能速率的结果。

地热同轴井筒配置。
图1-热同轴井眼配置。

完整的论文介绍了使用瞬态流模拟器在各种完井场景下提取的热能速率的评估结果。该评估是在闭环系统上进行的,其中流体包含在井筒和地面设施内并且不涉及任何地层流体。本研究使用多相流模拟器为了解从现有油气井提取地热能时的热能潜力和重要变量提供了路线图。

介绍

截至撰写本文时,加拿大西部有超过 130,000 口闲置和暂停的油井。这包括 3,000 多口孤井,但不包括另外 115,000 口废弃井。

对于其中一些油井,报废负债可以转化为资产。

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Mature fields

Flow Simulator Optimizes Geothermal Heat Extraction From End-of-Life Wells

This paper presents results from evaluating the rate of thermal energy that can be extracted under various completion scenarios in end-of-life oil and gas wells using a transient flow simulator.

Geothermal coaxial wellbore configuration.
Fig. 1—Geothermal coaxial wellbore configuration.

The complete paper presents results from evaluation of the rate of thermal energy that can be extracted under various completion scenarios using a transient flow simulator. This evaluation was conducted on closed-loop systems wherein the fluids are contained within the wellbore and surface facilities and do not involve any formation fluids. The use of a multiphase flow simulator for this study provides a road map for understanding thermal energy potential and important variables when considering extraction of geothermal energy from existing oil and gas wells.

Introduction

In Western Canada, there are, at the time of writing, more than 130,000 inactive and suspended wells. This includes more than 3,000 orphan wells but excludes an additional 115,000 abandoned wells.

For some of these wells, end-of-life liability can be turned into an asset.

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