利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN107642357A 一种抗温型低腐蚀高密度无固相测试液及其制备方法 无效 - 驳回

一种抗温型低腐蚀高密度无固相测试液及其制备方法
摘要：
本发明涉及油气田钻完井领域，具体而言，涉及一种抗温型低腐蚀高密度无固相测试液及其制备方法。一种抗温型低腐蚀高密度无固相测试液，其原料主要包括0.02-0.05wt％的除氧剂以及10-70wt％的磷酸盐。本发明提供新型低腐蚀高密度无固相测试液，密度最高可达1.82g/cm3。适用于陆地和海洋油气田的完井测试作业。且能在180℃保持性能稳定，并在低温和高温下相对传统测试液体系具备低腐蚀优势(80℃下腐蚀率低至0.0007mm/a，180℃下腐蚀率低至0.0214mm/a)，可以适应深层高温高压储层的施工条件。该测试液与传统甲酸钾盐水体系相比，可降低成本44％以上。
摘要（英）：

The invention relates to the field of oil and gas field drilling and completion, in particular to temperature-resisting low-corrosiveness high-density solid-free test fluid and a preparing method thereof. The temperature-resisting low-corrosiveness high-density solid-free test fluid is mainly prepared from 0.02-0.05 wt% of deoxidant and 10-70 wt% of phosphate. The density of the novel low-corrosiveness high-density solid-free test fluid is up to 1.82 g/cm<3>, is suitable for drilling and completion operation of land and ocean oil and gas fields, can be kept stable at the temperature of 180 DEGC, has the low-corrosiveness advantage under low temperature and high temperature compared with a traditional test fluid system (the corrosion rate is as low as 0.0007 mm/a at the temperature of 80 DEG C and is as low as 0.0214 mm/a at the temperature of 180 DEG C) and can adapt to construction conditions of a deep high-temperature and high-pressure reservoir stratum. Compared with a traditionalpotassium formate water system, the cost can be reduced by 44% or more.

0/0