空气钻井地层出水处理技术

发布时间：2018-11-23 15:49

【摘要】：利用空气钻含水地层,地层水会流入井眼,干燥的岩屑吸水很容易黏糊成团并附着在井壁和钻具上形成泥环,从而造成卡钻现象。基于低表面张力快速渗透分散破坏泥团原理,采用静态表面张力测定、润湿角测定、定时面积法、圆片帆布法、滚动回收率测定以及粒度分布测定等评价方法对9种表面活性剂的渗透性、分散性进行评价。可以看出,它们都有一定的润湿效果;结构中含有带支链的疏水基且亲水基小的表面活性剂渗透性强;阴离子表面活性剂的分散原理是双电层理论,非离子表面活性剂的分散原理是空间位阻效应,高分子分散剂比普通表面活性剂分散效果好。实验结果表明,加入CJY后的柴油溶液具有强渗透性和强分散性,碎解、破坏黏土泥团效率比油基解卡剂JKZ高,且温度越高,破坏程度越高,碎解效果越明显,对于解决空气钻井地层出水问题提供了依据。
[Abstract]:If air is used to drill the water-bearing formation, the formation water will flow into the hole, and the dry cuttings will easily stick and paste to form a mud-ring on the wellbore and the drill tool, which will result in drilling jam. Based on the principle of rapid permeation of low surface tension, the static surface tension measurement, the wetting angle measurement, the timing area method and the wafer method are adopted. The permeability and dispersity of 9 surfactants were evaluated by means of rolling recovery and particle size distribution. It can be seen that they all have certain wetting effect, and the structure contains hydrophobic groups with branched chains and small hydrophilic surfactants with strong permeability. The dispersion principle of anionic surfactants is two-layer theory, and the dispersion principle of Nonionic surfactants is steric effect. The dispersion effect of polymer dispersants is better than that of ordinary surfactants. The experimental results show that the diesel solution added with CJY has strong permeability and dispersibility, and the fragmentation efficiency of clay is higher than that of JKZ, and the higher the temperature, the higher the degree of destruction, and the more obvious the fragmentation effect is. It provides the basis for solving the problem of air drilling formation effluent.
【作者单位】：江汉石油工程有限公司钻井一公司;西南石油大学·油气藏地质及开发工程国家重点实验室;川庆钻探工程有限公司钻采工程技术研究院;
【分类号】：TE242.6

【相似文献】