钻井液与完井液2018，Vol.35Issue(2)：138-142,5.DOI:10.3969/j.issn.1001-5620.2018.02.023
新型高密度清洁复合盐水完井液
A New High Density Solid-free Clear Saltwater Completion Fluid
吴若宁 1熊汉桥 1岳超先 1朱杰 1孙运昌 1王启任1
作者信息
- 1. 西南石油大学石油与天然气工程学院,成都 610500
- 折叠
摘要
Abstract
In laboratory studies, solubilizing agent was used to increase the solubility of commonly used inorganic salts such as CaCl2 and ZnCl2 to formulate a new cost-efficient high density solid-free clear saltwater completion fluid. The addition of inorganic salts in a completion fluid increases the density of the fluid while not increasing its solids content. Two solubilizing agents were selected through laboratory experiments, which performed best in a solution containing 2％LAS-30+2％SLF-4. A clear saltwater completion fluid prepared with the said solution can have density of 1.926 g/cm3 with compounded inorganic salts. At this density, the concentration of CaCl2 is 160 g/100 mL water, and the concentration of ZnCl2 is 98 g/100 mL water. The new completion fluid has apparent viscosity of 33 mPa?s, temperature tolerance of 140 ℃, and recovery of damaged permeability as high as 96％. This completion fluid performed very well in reservoir protection.关键词
无固相清洁盐水完井液/高密度/抗高温/防止储层损害/增溶剂Key words
Solid-free clear saltwater completion fluid/High density/High temperature resistant/Prevent reservoir damage/Solubilizing agent分类
能源科技引用本文复制引用
吴若宁,熊汉桥,岳超先,朱杰,孙运昌,王启任..新型高密度清洁复合盐水完井液[J].钻井液与完井液,2018,35(2):138-142,5.
