可持续发展

向深层稠油中注入超临界二氧化碳实现地热开发

本文提出了通过超临界 CO2 注入对枯竭深层稠油油藏进行地热开发的综合模型。

图1——热采后稠油油藏SCCO2地热勘探。
图1——热采后稠油油藏SCCO2地热勘探。
来源：IPTC 24483。

深层稠油油藏在热驱后会保留大量的热量和油。超临界 CO 2 (SCCO 2 ) 因其高流动性和独特的热性能而成为最佳载热流体，并可提高稠油的开采率。本文介绍了一种使用 SCCO 2注入法对枯竭的深层稠油油藏进行地热开采的综合模型。

SCCO2 在地热开发中的潜力

近年来，许多深层稠油油藏均采用蒸汽吞吐方式开发，但蒸汽与稠油物性差异较大，加剧了粘性指进现象。

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Sustainability

Geothermal Exploitation Achieved by Injection of Supercritical CO2 Into Deep Heavy Oil

This paper presents a comprehensive model of geothermal exploitation for depleted deep heavy oil reservoirs through supercritical CO2 injection.

Fig. 1—Geothermal exploration using SCCO2 in a heavy oil reservoir after thermal recovery.
Fig. 1—Geothermal exploration using SCCO2 in a heavy oil reservoir after thermal recovery.
Source: IPTC 24483.

After thermal flooding, deep heavy oil reservoirs retain plenty of heat and oil. Supercritical CO2 (SCCO2) emerges as an optimal heat-carrying fluid and enhances heavy oil extraction because of its high mobility and unique thermal properties. A comprehensive model of geothermal exploitation for depleted deep heavy oil reservoirs using SCCO2 injection is described in the complete paper.

SCCO2 Potential in Geothermal Exploitation

In recent years, the development of many deep heavy oil reservoirs has been completed using steam huff ’n’ puff. However, the substantial contrast in physical properties between steam and heavy oil intensifies the occurrence of viscous fingering.

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