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针对南四区东部二类油层弱碱三元复合驱部分井区发育高渗透条带,油层动用程度较低,单层突进严重,连通采出井高含水、高产液,低效循环严重,开发了复合颗粒凝胶调剖技术,该技术2017年在南四东选取4口井进行了调剖,平均注入压力由试验前的8.9MPa逐渐上升到11.6MPa,调剖前后注入压力上升2.7MPa,施工后高渗透调剖层段部位的吸水能力得到控制,动用差的层段吸水能力增强,层间矛盾得到明显改善。
In view of the development of high permeable strata in the wellbores of the weak base and the ternary compound flooding of the second type of oil layer in the eastern part of Nansi District, the degree of oil layer utilization is relatively low and the monolayer suddenly protrudes seriously. The connected production wells have high water and high yield liquid, Composite particle gel profile control technology, the technology in 2017 South four East selected 4 wells were profiled, the average injection pressure from the test 8.9MPa gradually increased to 11.6MPa, before and after profile injection pressure increased 2.7MPa, construction After the high permeability profile control section of the water absorption capacity is controlled, poor utilization of the section of the water absorption capacity enhancement, contradiction between layers has been significantly improved.