流动保证

研究调查了 WAG 转换操作中的水合物形成风险

本研究调查了水转气和气转水转换作业下水交替注气井中的水合物形成情况。

水合物形成和分解曲线示意图，其中显示了水合物形成所需的过冷度
水合物形成和解离曲线示意图，其中显示了水合物形成所需的过冷度。
来源：SPE 218101。

水合物形成是海上石油和天然气作业（包括海底管道、油井和回接）面临的流动保障挑战。在水气交替 (WAG) 作业中，当从水转换为气或从气转换为水时，注入井内可能会形成水合物。本研究调查了在水转气和气转水转换作业下 WAG 注入井中的水合物形成情况。

介绍

之前很少有研究关注注气井和采气井中的水合物形成。在特定的提高采油率技术下，气井中的水合物形成需要更多关注。

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Flow assurance

Study Investigates Hydrate Formation Risk in WAG Changeover Operations

This study investigates hydrate formation in a water-alternating-gas injection well under water-to-gas and gas-to-water changeover operations.

Hydrate formation and dissociation curves schematic with required subcooling for hydrate formation
Hydrate formation and dissociation curves schematic with required subcooling for hydrate formation.
Source: SPE 218101.

Hydrate formation is a flow-assurance challenge for offshore oil and gas operations with subsea pipelines, wells, and tiebacks. In water-alternating-gas (WAG) operations, hydrates can form within the injection wells when switching from water to gas and vice versa. This study investigates hydrate formation in a WAG injection well under water-to-gas and gas-to-water changeover operations.

Introduction

Few previous studies have focused on hydrate formation in gas injection and production wells. Hydrate formation in a gas well under particular enhanced oil recovery techniques requires more attention.

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