摘要
基于天然高分子水基钻井液用主要处理剂:天然高分子包被剂IND30、天然高分子降滤失剂NAT20和NAT50、无荧光白沥青防塌剂NFA25和聚合醇防塌剂PGCS-1,优选出了环保型天然高分子水基钻井液的基本配方:5.0%膨润土+0.1%NaOH+0.3%IND30+0.5%NAT20+0.5%NAT50+2.0%NFA25+2.0%PGCS-1,并对其性能进行了评价。结果表明,该天然高分子水基钻井液具有强抑制能力和良好的抗温性、抗污染性、保护油气田及环保性能。广安地区6口井的现场应用表明,该环保型天然高分子水基钻井液体系维护简单,处理方便,在稳定井壁、提高机械钻速、保护储层、环境保护等方面优点显著,值得进一步推广应用。
Base on main treatment agents used for natural macromolecule water -base drilling fluid, i. e. , eneapsulant IND30, filtrate loss reducer NAT20 and NAT50, non - fluorescent albino asphalt anti - caving additive NFA25 and polymeric alcohol anti friendly natural macromoleeule water - base - caving additive PGCS - 1, a base formulation for environment - drilling fluid was optimized. The formulation was 5.0% bentonite ＋ 0.1% NaOH ＋ 0.3% IND30 ＋ 0.5% NAT20 ＋ 0.5%NAT50 ＋ 2.0%NFA25 ＋ 2.0%PGCS-1. The performance of the formulation was also evaluated. The result showed that the natural macromolecule water- base drilling fluid had strong inhibiting capability and good high -temperature resistance, anti - contamination capability, oil - gas field and environment protection effect. The result of field application in 6 wells of Guang＇an area showed the maintenance of the water - base drilling fluid system was simple and treatment was convenient. The system had remarkable strongpoints in increasing penetration speed, protecting reservoir, and protecting environment and was worth promoting.
出处
《精细石油化工进展》
CAS
2009年第12期15-17,21,共4页
Advances in Fine Petrochemicals
关键词
天然高分子水基钻井液
天然高分子处理剂
环境保护
钻井液配方
现场应用
natural macromolecule water-base drilling fluid
natural macromolecule treatment agent
environment protection
drilling fluid formulation
field application
