广谱暂堵剂MBA的研制与评价  

Development and Performance Evaluation of a Widely used Temporary Plugging Agent

作　　者：罗觉生[1] 曾繁涤[1] 向兴金[2] 罗春芝[2] 

机构地区：[1]华中科技大学化学系,湖北武汉430074 [2]江汉石油学院化学工程系,湖北荆州434102

出　　处：《江汉石油学院学报》2000年第3期101-102,共2页Journal of Jianghan Petroleum Institute

摘　　要：研制出了广谱暂堵剂 MBA,用以解决普通暂堵剂现场使用时粒径及抗温性难以选择准确的问题。试验表明 ,在水基钻井液体系中加入 3 %～ 5%的广谱暂堵剂 MBA,能在渗透率为 50× 1 0 - 3～ 3 　0 0 0× 1 0 - 3μm2的岩心上形成有效暂堵 ,损害深度小于 2 .5cm,易于反排或射孔解除 ,渗透率恢复值达 80 %以上。A widely used temporary plugging agent, MBA, is developed to solve the problem that it is hard to select the grain size and temperature resistant property by applying general temporary plugging agents in the field The result obtained shows that when 3%—5% MBA is added into a water based fluid, an effective plugging would be produced on the cores with permeability of 50×10 -3 —3 000×10 -3 μm 2,the damage produced is less than 2 5 cm deep and eliminated easily by flowback or perforation, and the restoration rate of permeability is above 80%

关 键 词：钻井液 堵塞剂 防止地层损害 岩心试验 MBA 

分 类 号：TE258[石油与天然气工程—油气井工程]