摘要
为了提高深层(3500m)天然气资源开发效果,实现有效开发资源,达到增产和稳定生产的目的,以压裂酸化改造为手段,先后开展了前置酸化降低破裂压力、开发了耐高温(180℃)低伤害醇基压裂液体系和VDA-SL自转向酸酸液体系,其中耐高温醇基压裂液改性的胍胶体系能溶于20%~50%甲醇水溶液的稠化剂,溶于20%的甲醇水溶液中表观粘度为159mPa.s,粘度与水基压裂液相接近;高温流变性能测试实验结果表明在180℃,17-0 s条件下,剪切60m in后,粘度为113mPa.s。现场进行了醇基压裂液试验应用,取得了较好的改造效果。
In order to improve development of deep(3500 m) gas resources and achieve high or stable yields,by fracture-acid remaking we develop test on fore displacement acidizing which can lower breaking stress,what's more,fracturing fluids are studied,including of alcohol fracturing fluids with high temperature resistance(180℃) and low injury and VPA-SL acid solution system water solution. The modified guanidine of alcohol fracturing fluids with high temperature can be dissolved in 20%～50% methanol,the apparent viscosity of fracturing fluids which is dissolved in 20% methanol is 159 mPa.s connected with water base fracturing fluids.The experimental results on the high temperature and flow ability show that in the condition of 180℃ and 170-s,shearing 60 min,the viscosity will be 113 mPa.s.The research of optimizing design and test on large scale fracture technology,fracture acidizing and technological producing tubing column are studied on-the-spot,and on-site application shows that good development effect has been achieved.
出处
《内蒙古石油化工》
CAS
2011年第10期156-159,共4页
Inner Mongolia Petrochemical Industry
关键词
深层致密气藏
储层改造
压裂液
配套工艺技术
Deep compact gas reservoirs
Formation remaking
Fracturing fluid
Assemble technology
