CFR为主体的缓速酸研究及现场应用

研制了多效酸液添加剂ＣＦＲ，以ＣＦＲ为主体配制成功了具有良好缓蚀，缓速，稳定三价铁离子和低表面张力等性能的缓速酸液体系。报导了ＣＦＲ及其酸液的配方和各项性能，介绍了在陕甘宁中部气田２口井上用ＣＦＲ缓速酸成功地进行酸化压裂的实例。

CFR-BASED RETARDED ACIDIZING FLUID:RESEARCH AND USE

A multifunctional additive, CFR, is formulated from several chemicals for corrosion inhibition,acid-rock reactionretardation,ferric ion stabilization, surface tension reduction and other purposes in hydrochloric aciding fluids,which are readily prepared from acid ,CFR and a few other chcmicals (beck flow aid,clay stabilizer, etc). A polyoxyethlene alkyl glycol ether serves as the main retarder in the formulation of the acidizing fluids. The properties of CFR and CFR retarded acid are investigared and evaluated. The successful use of CFR-retarded acidizing fluids in two producing wells in middle region of Shaanxi-Gansu-Ningxia Gas Fields is dipicted.