油田进入高含水期开采阶段,地层出现高渗透层、大孔道、裂缝,注入水窜进,注入水平面上单向突进和剖面矛盾突出,严重影响采收率的提高。结合河南稠油常采区块的这一特征,研制出适合该区块的无机颗粒调剖技术,并在现场应用中取得了明显的增油效果。 When the oilfield enters the high-water-cut mining stage, the formation is characterized by high permeability layers, large pores, cracks and water injection. The unidirectional sudden advancement on the injection horizontal plane and the contradiction between the sections are prominent, seriously affecting the recovery of oil recovery. Combined with this feature of Henan normal heavy oil mining block, developed an inorganic particle profile control technology for the block, and achieved significant oil increase effect in the field application.