含CO_2气井防腐工艺技术  

ANTI-CORROSION TECHNOLOGY IN GAS WELLS WITH CO_2

作　　者：杨涛[1] 杨桦[2] 王凤江[2] 谈锦锋[1] 黎洪珍[3] 

机构地区：[1]中国石油西南油气田公司采气工程研究院 [2]中国石油勘探开发科学研究院 [3]中国石油西南油气田公司重庆气矿

出　　处：《天然气工业》2007年第11期116-118,共3页Natural Gas Industry

摘　　要：CO2腐蚀是世界石油天然气工业中常见的一种腐蚀类型,含CO2气井的相关工艺技术直接关系着气井的质量与寿命,是气井安全、高效生产的基础。为此,对我国几个不同类型含CO2油气田的现场的CO2腐蚀资料进行了调查、研究,分析了CO2腐蚀给天然气生产带来的严重危害性,总结出在不同类型油气田中CO2腐蚀的一般规律和不同区域CO2腐蚀的特殊性;在对CO2腐蚀的现象、特点、类型、机理以及腐蚀的影响因素研究的基础上,提出了含CO2气井防腐工艺技术应着重解决好含CO2气井的完井、生产管柱采用不锈钢或双金属复合油管、加注缓蚀剂等几种有效的防腐蚀措施。CO2 corrosion is one of the most common corrosions in oil and gas industry, so the anti-corrosion technology, closely related to the quality and working life of CO2-contained gas wells, is the basis for safe and highly efficient production of gas wells. Herein through investigation on the collected CO2 corrosion data from different CO2-contained oil and gas fields, this study analyzed the serious damage and hazards on the gas production, summarized up the general rules of CO2 corrosion and its peculiarities at different areas. According to studies on phenomena, features, mechanism, and influencing factors on CO2 corrosion, this study put forward that a few effective countermeasures should be taken for anti-corrosion technology including injecting corrosion inhibitor, adopting stainless steel or bimetallic materials for the combination casing strings or well tubings.

关 键 词：二氧化碳 气井 酸性 腐蚀 防腐 技术 

分 类 号：TE983[石油与天然气工程—石油机械设备]