高含水断块交联聚合物堵水调剖研究与应用

介绍了Zhenw油田高含水断块油藏聚丙烯酰胺/酚醛交联聚合物堵水调剖矿场试验。结果表明:污水配制的一定浓度的交联聚合物溶液可以调整纵向吸水剖面,使后续水驱进入低渗的相对高含油层位,提高注水井的注入压力;同时,通过交联聚合物溶液在高渗层内的液流改向作用,起到调剖作用。通过注入交联聚合物溶液具有改善驱油效果,提高高含水区块原油采收率的作用。

RESEARCH AND APPLICATION OF WATER PLUGGING AND PROFILE CONTROL OF A CROSSLINKED POLYMER SOLUTION IN FAULT BLOCK WITH HIGH WATER CONTENT

In this paper, a field test on water plugging and profile control by a HPAM/Phenolic Aldehyde crosslinked polymer solution (LPS) used in the fault block reservoir with higher water content in Zhenw oilfield has been introduced. Results show that certain concentration of LPS can modify the vertical water injection profile, and makes the afterward water into the higheroil content layer, and improves the injection pressure of water injection well. At the same time, the injection of LPS will changes the direction of liquid flow to adjust the profile in the high permeability formation. It can improve oil displacement efficiency and enhance oil recovery in the fault block with highwater content.