摘要
对埋藏浅，油层温度低的油藏进行压裂改造，需解决压裂液低温破胶水化的问题。采用活化剂来提高过硫酸铵（ＡＰＳ），酶，胶囊破胶剂的低温破胶能力。通过对有机硼交联的羟丙基瓜胶（ＨＰＧ）压裂液低温下破胶后粘度损失率的测定，筛选出用于５０℃下的ＡＰＳ／活化剂破胶系统及胶囊破胶剂。结果表明：在ＡＰＳ／活化剂破胶系统的作用下，采用有机硼作交联剂的ＨＰＧ压裂液在较低温度条件下能彻底破胶水化。
It
is necessary to solve the problem of fracturing fluids being broken in shallow and low
temperature reservoirs. Catalysts under low temperature accelerate the breaking capabilities of
ammonium persulfate (APS), enzyme and encapsulated breaker. By testing viscosity losses of
hydroxyprophyl guar(HPG) crosslinked by borane, some APS/catalysts systems and
microencapsulated breaker have been screened at 50. Results have been shown that the HPG
fracturing fluids can be completely destroyed by APS/catalysts.
出处
《西南石油学院学报》
CSCD
1999年第2期74-76,共3页
Journal of Southwest Petroleum Institute
关键词
压裂液
交联
破胶剂
有机硼
HPG
水力压裂
fracturing fluid,
crosslinking reaction, gel breaker, research
