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松南气田含CO_2气井开发生产中出现套压异常升高问题,对生产套管、采气树、工具存在酸性腐蚀,影响安全生产及开发。通过生产井进行了统计和分析,对现场操作进行了调查和跟踪,结合BGT合金油管生产厂家的要求和普光气田下油管的做法进行了研究和探索,结合松南气田的实际生产情况,提出BGT合金油管推荐做法。
In the development and production of CO_2 gas wells in Songnan gas field, there is an abnormal increase of casing pressure. Acid corrosion exists on production casing, gas tree and tools, affecting safety production and development. Through the statistics and analysis of the production wells, the site operations were investigated and tracked, and the requirements of the BGT alloy tubing manufacturers and the tubing of the Puguang Gas Field were studied and explored. Combined with the actual production in Songnan Gas Field, the authors proposed that the BGT alloy Tubing recommended practice.