Keywords Xanthane/Cr 3+ Aqueous Gel;Water Injectivity Profile Modification;Water Injection Wells;Field Uses;Fault Blocks C15 and C39 in Chaheji of Huabei;

• 黄原胶/铬水基冻胶;调剖剂;吸水剖面调整;注水井;矿场应用;岔15、39断块（华北岔河集油田）;