摘要
新型疏水缔合聚合物是亲水性大分子链上带有少量疏水基团的水溶性聚合物,当其溶液浓度达到临界缔合 浓度时,会出现疏水效应,强烈影响该聚合物溶液的性质,使其与一般聚合物溶液大相径庭。室内研究表明,该聚 合物溶液具有优良的增粘效应、耐温、抗盐和抗剪切性能。针对胜利油区Ⅱ类聚合物驱潜力油藏的地质特点,在室 内用填砂管模型和真实岩心研究了新型疏水缔合聚合物的驱油效率,结果表明在高温、高粘度、高矿化度油藏条件 下,新型疏水缔合水溶性聚合物可提高采收率7.62％以上,具有广阔的应用前景。
New hydrophobic associating polymer (NHAWPs) is a sort of water-soluble polymer with a few hydrophobic groups on the hydrophilic macromolecular chains. When its solution concentration reached critical associating concentration, hydrophobic effect will emerge. It will affect the solution proprieties of NHAWPs heavily and make it entirely different with normal polymer solutions. Lab study indicated that the solution of hydro-phobic associating polymer showed many excellent properties, such as viscosity increase, temperature resistance, salt resistance and shear resistance. According to geologic properties of Ⅱ-type potential oil reservoirs by polymer flooding in Shengli oilfield, the oil displacement efficiency of new hydrophobic associating water-soluble polymer was studied by sandpacked tube model and the actual cores. Results indicated that this polymer can enhance oil recovery by more than 7.62% under high temperature, high viscosity and high salinity reservoirs. It has a broad applied prospect.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2005年第2期63-65,共3页
Petroleum Geology and Recovery Efficiency
