利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN110484226A 压井用暂堵剂及其制备方法 无效 - 驳回

压井用暂堵剂及其制备方法
摘要：
本发明公开了一种压井用暂堵剂及其制备方法，属于油田化学领域。该压井用暂堵剂通过以下各质量百分比的组分交联得到：交联单体1.0％～5.0％、油1.0％～5.0％、分散剂0.5％～2.0％、交联剂2.0％～5.0％、多元醇2.0％～10.0％、破胶剂0.05％～1.0％、余量为水；交联单体为植物胶。该暂堵剂成胶前粘度低，易于泵注作业，成胶后粘度高，适用温度范围宽，可耐120℃高温，与酸性物质接触后可快速破胶，解堵时间短，并且，植物胶破胶后对储层的伤害小。
摘要（英）：

The invention discloses a temporary plugging agent for well killing and a preparation method thereof, and belongs to the field of oilfield chemistry. The temporary plugging agent for well killing is obtained by crosslinking the following components in percentage by mass: 1.0%-5.0% of a crosslinking monomer, 1.0%-5.0% of oil, 0.5%-2.0% of a dispersing agent, 2.0%-5.0% of a crosslinking agent, 2.0%-10.0% of polyol, and 0.05%-1.0% of a gel breaker, with the balance being water, and the crosslinking monomer being plant gum. The temporary plugging agent is low in viscosity before gelling, easy to pump and inject, high in viscosity after gelling, wide in applicable temperature range, capable of resisting high temperature of 120 DEG C, capable of quick gel breaking after being in contact with acidic substances, short in plug removal time and small in damage to a reservoir after plant gum breaking.

0/0