LB-01液体堵剂在孤岛油田中二北馆5单元现场应用

通过分析孤岛油田中二北馆5单元蒸汽吞吐热采试验区的构造特征、储层分布、储层物性、流体性质和开发现状等,选用能适应孤岛地层注汽温度的LB-01液体堵剂进行现场试验。该液体堵剂由主剂水玻璃、复合型电解质胶凝剂以及其他助剂经螯合包覆等反应形成的单液法堵水剂,具有耐高温的特征。现场共实施4口井,开井4口,平均单井日增油10.9 t、平均含水下降16.6%,累计增油4 094 t。

Application of LB-01 liquid plugging agent in Zhong'erbei Ng5 unit in Gudao Oilfield

The structural feature,reservoir distribution,reservoir physical property,fluid property and current status of exploitation of Zhong'erbei Ng5 unit in Gudao Oilfield were analyzed in this paper.The LB-01 liquid plugging agent used in experimental area was made up of primary agent complex electrolytic agglomerating agent and other auxiliary agents.This water plugging agent was formed by chelation and encasing of soluble glass,agglomerating agent and other auxiliary agents using single-fluid method.After using this plugging agent in 4 oil wells,the average daily output were increased by 10.9 tons,average water cut decreased by 16.6 percents,and accumulated production increased 4 094 tons.