新型功能聚合物在低渗透油层中

在传统聚丙烯酰胺的基础上,合成了一种新型改性功能聚合物.该聚合物分子量在700-900万之间.依据油层渗透率与聚驱分子量的匹配性得知1],其目的层是低渗透油层.测试了该聚合物的流动性及驱油效率.结果表明在低渗透油藏中,该聚合物具有较高的阻力系数和残余阻力系数,展示出良好的可注入性和流度控制能力.同时,该聚合物能有效提高低渗透油层聚驱采收率7％以上,远高于传统700万低分聚合物4％左右的采收率.因此,该聚合物与低渗透油层有着较好的匹配性,具备工业推广应用前景.

Mobility of A New Functional Polymer in Low Permeability Oil layers

A new modified functional polymer was synthesized on the basis of traditional PAM. according to the matching relationship between permeability and molecular weight, the molecular weight of the polymer was about 7 to 9million Dalton and it was for low permeability layers. Lab researches were carried out on its mobility and recovery factor. Results indicated that higher coefficients of resistance and residual resistance were obtained in low permeability layers. Better injection and mobility were demonstrated by the polymer. Besides, the polymer could enhanced the recovery factor of the low permeability layers by more than 7%, which was far higher than 4% of traditional polymer of 700million Dalton. It could be concluded that the polymer was profitable to the low permeability layers and it could be industrially applied all over the oil field