针对常规丙烯酰胺类弱凝胶堵剂成胶黏度低、不耐高矿化度等问题，研制了一种有机聚合物交联弱凝胶。应用流变法研究了有机聚合物交联弱凝胶的性能，考察了温度、pH、矿化度对弱凝胶性能的影响，并进行了填砂管封堵实验。结果表明，在80℃、碱性条件下，弱凝胶体系成胶黏度可达143×10³ mPa·s，并具有较好的抗盐性能。该弱凝胶堵剂对高渗层的封堵率达99%以上，且在驱替30 PV后封堵率仍能达到97%以上，封堵性能较好，能够满足调剖堵水作业现场的需求。

A kind of organic polymer crosslinked weak gel is developed to solve the problems of low viscosity and high salinity in conventional acrylamide weak gel plugging agent.Its properties are studied by means of rheological method.The effects of temperature,pH and salinity on the properties of the weak gel are investigated,and the weak gel is used to perform sand-filling-tube experiment.The results indicate that the gelation viscosity of weak gel system can reach 143×10³ mPa·s under 80℃ and alkaline situation,and it exhibits good salt resistance.The plugging rate of the weak gel plugging agent to high permeability layer can exceed 99%,and can still reach over 97% after displacement of 30PV.The plugging performance is good and can be applied in profile control and water shutoff on-site task.