Abstract: According to the WZAAX1 formation damage mainly caused by sealing oil based mud residue, the NHJDJ plugging removal agent was composed by flushing agent, organic solvent, emulsion preventative surfactant, clay inhibitor, organic acid and etc. The agent has a strong dispersion and cleaning ability to oilbased drilling mud, after soaking about 90% of the mud cake weight reduced. The core permeability recovery rate was above 90%, part of the permeability recovery rate even exceeded 100% in lab simulation plugging removal experiment. After filed application, the well fluid production index was increased to 12.8 times, the pump inlet flow pressure was raised by 5.7 MPa, oil production data rate was increased by 208 m3. So, 13.62×104 m3 oil was cumulative increased making good technological effect and economic benefit.

Key words: Weizhou formation,   , Oil based mud,    ,  Formation damage,   ,  Broken down

摘要： 针对 WZ AA - X 1井主要因封堵性油基泥浆残余物造成储层伤害的问题, 以清洗渗透剂、 溶剂型有机 溶剂、 防乳破乳剂、 黏土稳定剂、 有机酸等构建了解堵药剂 NH - J D J 。该药剂对油基泥浆泥饼有较强的分散、 清洗能 力, 泥饼浸泡后失重率在9 0%左右; 室内模拟解堵实验岩心渗透率恢复率在9 0%以上, 部分岩心的渗透率恢复率超 过了1 0 0%。现场应用后, 该井产液指数提高至解堵前的1 2. 8倍, 泵吸入口流压上升5. 7MP a, 日增油2 0 8m3, 预计 可累计实现增油1 3. 6 2×1 0 4 m3, 取得较好的工艺效果和经济效益。

关键词: 涠洲组,  , 油基泥浆,  , 储层伤害, 解堵