Study on Compatibility of Completion Fluid Additives with Formate Water Solutions
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摘要: 塔里木油田现场使用的甲酸盐完井液主要应用于高温深井，温度高达180℃，环境条件苛刻，为了保障现场完井作业顺利进行，对完井液热稳定性、黏度、滤失量、封堵性能、沉降稳定性、渗透率恢复值等性能均要求较高，因此合理选择甲酸盐钻完井液用处理剂是保证其性能达到要求的必要条件。探讨了完井液用处理剂与甲酸盐水相容性规律，为甲酸盐完井液处理剂的筛选与使用提供依据；并研发了抗180℃高温高密度无土相甲酸盐完井液。
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关键词:
- 甲酸盐水 /
- 增黏剂 /
- 降滤失剂 /
- 封堵剂、甲酸盐完井液
Abstract: Formate completion fluid is mainly used in Tarim Basin to drill high temperature deep wells with bottom hole temperature to 180℃. Successful drilling of these high temperature deep wells imposes rigorous requirements on the properties of completion fluid, such as thermal stability, viscosity, filtration rate, plugging capacity, settling stability and permeability recovery etc. Selection of appropriate formate completion fluid additives is essential for the completion fluid to have properties satisfying the needs aforementioned. This paper discusses the pattern of compatibility between completion fluid additives and formate water solution, providing a basis on which formate completion fluid additives can be screened and used. The composition of a high temperature high density clay-free formate completion fluid that can be used at 180℃ is also presented in this paper.-
Key words:
- Formate Water /
- Viscosifier /
- Filter loss reducer /
- Plugging agent
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