相对渗透率调节剂负载砂制备工艺及性能研究

Preparation and Performance of the Relative Permeability Modifier loaded Water Control Sand

通过在充填石英砂表面化学接枝具有相对渗透率调节功能的三元共聚物制备了相对渗透率调节剂负载砂,研究了相对渗透率调节剂负载砂的负载工艺及制备方法,并对其控水性能及耐温、耐压性能进行了室内评价。红外光谱研究表明在充填石英砂表面负载有相对渗透率调节剂(三元共聚物),优化制备的相对渗透率调节剂负载砂的负载量为6.5%,负载砂可以明显降低水相渗透率,而对油相渗透率影响很小,NFRR≥3,说明其控水性能优良;耐受温度80℃以上,地层压力下控水性能稳定,可以满足绝大多数油田的控水防砂要求。

The relative permeability modifier loaded water control sand（RPMLWCS） was prepared by graft ternary copolymerizing on the surface of the quartz sand.The relative manufacturing technology and the structure of the RPMLWCS were investigated,and the water-control ability,heat-resistance and pressure-resistance of the PRMLWCS were studied.The results showed that the ternary copolymer was loaded on the surface of the quartz sand and the loaded content of the RPMLWCS obtained by optimizing preparation technology was 6.5%;the loaded relative permeability modifier induced a obvious reduction of the water permeability of the quartz sand while had little influence on the oil permeability of the quartz sand;the NFRR value of the core flow test was ≥3,indicating that the water-control performance of the PRMLWCS was good,in addition,the RPMLWCS was resistant to high temperature of 80℃ and high pressure of 8~12 MPa.