Study on Reservoir Low Efficiency Reasons and Plugging Removal Liquid System in Weizhou XX Oil Field

Abstract

涠洲XX油田储层物性差、温度高，在钻完井、修井、生产过程中极易造成储层伤害。室内利用模拟实验与软件计算的方法，找到了储层伤害的主控因素；并针对性地构建了一套复合解堵液体系。评价实验表明，该体系具有防止二次沉淀能力强、高温缓蚀性能好、解除钻完井液修井液伤害能力强等特点。现场应用中取得了单井60 m3/d的日增油量。 Due to poor reservoir properties and high temperature in WeizhouXX oilfield, it is very easy to cause reservoir damage during drilling, completion, workover and production process. The main causes of reservoir damage were found by using laboratory experiments and software calculation. A set of compound plugging solution system is constructed. Laboratory experiments show that the system has strong ability to prevent secondary precipitation, good corrosion inhibition performance at high temperature, and strong ability to remove damage from the fluid of drilling, completion and workover. The daily oil increment of 60 m3/d was obtained in the well application.