摘要
针对胜利纯梁油田泥质含量高的地质特点，研制了以甲醛、氟化铵和有机羧酸为主要成分的ＦＡＣ酸化液。本文介绍了ＦＡＣ酸化液的酸化机理、性能及现场试验情况。结果表明，该酸液腐蚀性小，与地层的反应速度低，不易产生二次沉淀。
An acidizing fluid, FAC, composed mainly of formaldehyde, ammonium fluoride, and carboxylic acids in salt form is developed for indepth acidization of low permeable argillaceous reservoirs in Chunliang Oil Fields, Shengli. The reaction of 25%FAC acidizing fluid with thin plate glass, quartz/clay mixture, and reservoir sand are notably retarded in comparison with that of mud acid (12% HCl+3% HF) but can proceed to relatively high extent in prolonged time. The corrosivity of 25% FAC at 90℃ is low and can be decreased to very low values by introducing a little amount of corrosion inhibitor. 25% FAC is tolerent to Fe 3+ up to 800mg/l at 90℃. The field testing FAC in acidizing 4 production and 5 water injection wells (80-115℃) is successful.
出处
《油田化学》
CAS
CSCD
北大核心
1996年第4期299-302,共4页
Oilfield Chemistry
关键词
FAC
酸化液
缓速酸
粘土酸
油层
酸化
油田
Formaldehyde/Ammonium Fluoride/Carboxylic Acids Salts Acidizing Fluid, Latent Acid, Clay Acid, Performance Properties Evaluation, Field Tests, Chunliang Oil Fields in Shengli
