摘要
根据国外超低渗透钻井液的特点,研制出了新一代超低渗透剂YHS-1和增黏聚合物ZJ-1,合成了润滑剂PLG-1,采用正交实验确定了超低渗透钻井液的最佳配方:2.0%～4.0%固相+1.0%～3.0%YHS-1+2.0%～3.0%ZJ-1+0.5%～1.0%PGL-1。该钻井液的室内性能评价结果表明,其能在井壁孔隙和裂缝中形成致密性聚合物胶束膜,大幅度提高地层承压能力和阻缓压力传递,渗透率恢复率达到95%以上,油层保护性能突出;用发光菌法对该钻井液中几种处理剂的生物毒性进行了测试、评价,结果表明,该超低渗透钻井液无毒,具有环境友好的特点。
Based on the investigations of abroad ultra-low permeable drilling fluid, a new kind of ultra- low permeable agent YHS-1, the PI.G-1 lubricant and the ZJ-1 polymer viscostifier were developed. The optimized formula was obtained by orthogonal experiments： 2 %-4% of solid content, 1%-3% of YHS-1,2%-3% of ZJ-1, 0.5%-1.0% of PGL-1. The performance evaluation results indicate that this system can enhance the pressurization of formations and slow down slow down the speed of pressure transportation by creating a compact micelle polymer membrane on the surface of wellbore pores and micro-fractures, and the permeability may recover as high as 90%, and the formation protection results are obvious. The toxicity test results showed that the system has no toxicity, which make the system much friendly to environment.
出处
《石油钻探技术》
CAS
北大核心
2009年第1期46-52,共7页
Petroleum Drilling Techniques
基金
中国石化集团重点科技攻关项目"多压力层系非渗透钻井液技术研究"(编号:JP050032)部分成果
关键词
钻井液
钻井液添加剂
润滑剂
钻井液性能
渗透率
drilling fluid
drilling fluid additives
lubricant
drilling fluid property
permeability
