摘要
本文报导的有机延缓交联体系为大港油田主要使用的深部调剖剂，它较无机交联体系有较高的抗盐和抗钙（８００ｍｇ／Ｌ）和镁（＜１５００ｍｇ／Ｌ）性能。本工作研究了下列因素对体系形成冻胶时间和冻胶强度（粘度）的影响：ＨＰＡＭ、甲醛、第二交联剂的浓度，钙、镁离子浓度，盐浓度，ｐＨ值，剪切作用，冻胶失水收缩和再吸水；冻胶的放置稳定性良好。
he gelling fluid presented here is widely used at Dagang Oil Fields for indepth gel treatments to convert the flow of injected water. It is much more tolerent to NaCl as well as to Ca2+ (800 ppm) and Mg2+(<1500 ppm) than inorganic crosslinking one. In this paper the influences of various factors on the gelation time and gel strength (viscosity) are experimentally investigated on gelling fluides composed of HPAM in 4000 ppm, formaldehyde in 1100 ppm, and a 2nd crosslinker in 1100 ppm. These factors are: concentrations of HPAM and crosslinkers, Ca2+, Mg2+, NaCl, pH value, shear, and syneresis and water regain. The gel stability is good.
出处
《油田化学》
CAS
CSCD
北大核心
1998年第1期42-46,共5页
Oilfield Chemistry
关键词
油田
堵水
有机延缓交联
调剖剂
地层适应性
HPAM/HCHO/Polyhydroxyl Compound Gelling Fluid, Delay OrganicCrosslinking HPAM Gelling Fluid, Gelation Time, Gel Strength, Salt and Calcium/Magnesium Tolerancies, Gel Stability, Indepth Profile Modificator
