井完整性/控制

应用于二氧化碳封存项目的井完整性风险评估策略

这项研究评估了马来西亚二氧化碳储存库穿透井的完整性和二氧化碳泄漏风险。

17 号井开发的完整性风险评估矩阵。
图1—17井开发井完整性风险评估矩阵。

枯竭的碳氢化合物储层被认为对于碳封存来说本质上是安全的,但穿透二氧化碳 (CO 2 ) 储层的高密度井可能会损害碳捕获和封存 (CCS) 项目的遏制性能。可以采用风险管理方法来评估现有堵塞废弃 (P&A) 和开发井的主要和次要障碍,以确保 CO 2封存项目的长期可行性完整的论文评估了穿透 CO 2储存库的枯竭油田中井沿线的井完整性和 CO 2泄漏风险。

背景

马来西亚近海已确定的 CO 2封存地点是 20 世纪 80 年代初发现的贫化碳氢化合物田。随后,钻探了两口评价井,以进一步评估该油田的开发潜力。

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Well integrity/control

Well-Integrity Risk-Assessment Strategy Applied to CO2 Sequestration Project

This study evaluates well integrity and CO2-leakage risk in wells penetrating a CO2 storage reservoir in Malaysia.

Well-integrity risk-assessment matrix for development Well 17.
Fig. 1—Well-integrity risk-assessment matrix for development Well 17.

Depleted hydrocarbon reservoirs are considered inherently safe for carbon sequestration, but a high density of wells penetrating the carbon dioxide (CO2) storage reservoir could compromise containment performance in a carbon capture and sequestration (CCS) project. A risk-management methodology can be incorporated to evaluate primary and secondary barriers in existing plugged and abandoned (P&A) and development wells to ensure long-term viability of CO2 sequestration projects. The complete paper evaluates well-integrity and CO2 leakage risks along the wells in a depleted field that penetrates the CO2 storage reservoir.

Background

The identified CO2 storage site offshore Malaysia is a depleted hydrocarbon field discovered in the early 1980s. Subsequently, two appraisal wells were drilled to further assess the field’s development potential.

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