摘要
HPAM/Cr3+冻胶压裂液是一种报道较少的压裂液体系,该压裂液具有增粘能力强、携砂性好、摩阻低、冻胶水化破胶后残渣少等优点。但在低温条件下,聚丙烯酰胺可控制性降解比较困难,限制了在油田上的应用。考察了破胶剂的低温破胶性能;研究了影响该压裂液的低温破胶性能的影响因素;提出了用于低温地层的破胶体系配方。该体系可在低温(30℃)下破胶。
It is seldom reported about HPAM/Cr^(3+) gel fracturing fluid system. The system has strong ability of increasing viscosity, good prop-carrying capacity, low frictional resistance, less residue after gel-breaking and so on. However, at low temperature, the controllable degradation of polyacrylamide is in difficulty, and its application in oil field has been restricted. In this paper, we have investigated the gel-breaking capacity of the breaker at low temperature, factors that influence gel-breaking capacity of the fracturing fluid and put forward a gel-breaking system used in low temperature formation. The system can break gel at low temperature of 30℃.
出处
《西南石油学院学报》
CSCD
北大核心
2005年第2期64-65,共2页
Journal of Southwest Petroleum Institute
