Research Progress and Development Trend of Chemicals Used for Natural Gas Wells
1. Xi’an Changqing Chemical Group Co. Ltd, Xi’an 710200, China
2. Sinopec Gaoqiao Petrochemical Co., Ltd., Shanghai 200137, China
3. Xi'an Petroleum University Oil and Gas Field Chemistry Shaanxi Provincial University Engineering Research Center, Xi’an 710065, China
| Abstract: | At present, the production of natural gas is often accompanied by problems such as liquid accumulation at the bottom of the well, wellbore corrosion, and hydrate plugging. The traditional solution to these problems is to use a single chemical agent. Usually, foaming agents, corrosion inhibitors and hydrate anti-agglomerants are injected into the wells to mitigate the liquid loading, corrosion and blockage caused by gas hydrate, respectively. However, the issues associated with liquid loading, corrosion and blocakeges by hydrate often occurs at the same time, there may be compatibility issues among the foaming agents, corrosion inhibitors and hydrate anti-agglomerants. If multi-functional integrated agents are developed, those three problems mentioned above can simultaneously be solved. However, there are few reports regarding the multi-functional integrated agents that can simultaneously solve the above three problems. This article combines the action mechanism and development status of foaming agents for gas well deliquification, corrosion inhibitors and hydrate anti-agglomerants to propose a multi-functional integrated agent that simultaneously has liquid unloading, corrosion inhibition and hydrate anti-agglomeration, providing a new idea to efficiently promote the natural gas production. |
| Keywords: | Foam-based Deliquification; Corrosion Inhibition; Hydrate Anti-aggregation; Integrated Agent |
| DOI: | 10.57237/j.mater.2024.01.001 |
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Received: 13 December 2023
Accepted: 1 February 2024
Published Online: 4 February 2024
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