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为了满足陕甘宁盆地中部气田勘探开发的需要,西南石油学院石油工程系根据外加剂优化设计原理研制开发出一种新型高效多功能油井水泥降滤失剂HS。HS系列降滤失剂是由纤维衍生物接枝改性后制成的,分液体、固体、中温、高温几种类型。用这种降滤失剂配制的水泥浆具有流变性能好,悬浮稳定性强,无自由水,早期强度高,渗透率低,对水质矿化度不敏感,低温速溶,兼具防气窜能力等优点;与SXY减阻剂共同使用,可在循环温度低于93℃时将滤失量控制在150 mL(7 MPa,颗粒粒径小于0.045 mm)以下,且不需缓
In order to meet the needs of exploration and development of the gas field in the central part of Shaanxi-Gansu-Ningxia Basin, the petroleum engineering department of Southwest Petroleum Institute has developed and developed a new type of high efficient and multifunctional oil well cement filtrate reducer HS according to the principle of optimal design of admixture. HS series fluid loss reducer is made by graft modification of fiber derivatives, liquid, solid, medium temperature, high temperature several types. The slurry prepared by using the fluid loss control agent has the advantages of good rheological property, strong suspension stability, free water, high early strength, low permeability, insensitivity to water salinity, instantaneous solution at low temperature and anti-gas channeling Capacity and other advantages; SXY drag-reducing agent used in conjunction, the circulating temperature below 93 ℃ when the filtrate loss control in 150 mL (7 MPa, particle size less than 0.045 mm) below, and without delay