胜利油田牛35块酸化技术研究应用  

RESEARCH AND APPLICATION OF ACIDIZING TREATMENT TECHNOLOGY IN NIU 35 BLOCK OF SHENGLI OILFIELD

作　　者：赵磊[1] 胡永全[2] 田菽阳[1] 张丁涌[1] 田继东[2] 李建荣[1] 张矿生[2] 

机构地区：[1]胜利油田现河采油厂,山东东营257000 [2]西南石油学院石油工程学院,四川成都610500

出　　处：《西南石油学院学报》2005年第3期54-56,i005,共4页Journal of Southwest Petroleum Institute

摘　　要：针对胜利油田牛35块油藏孔喉半径小、泥质含量高、微孔隙发育等储层特点,以商品酸、不同浓度盐酸和不同浓度土酸进行酸化效果实验,中等浓度盐酸或中等浓度土酸酸液综合效果最好。并通过实验筛选出以1.5%XFZ-1为铁离子稳定剂、4%CHG为互溶助排剂、1%-2%NH4Cl为防膨添加剂。确定的酸液配方表面张力小、腐蚀速度低,综合性能好。结合液态CO2助排工艺,现场试验取得了理想的酸化效果。Considering the characteristics of small pore throat radius, high mud content and tiny hole development in Niu 35 Block of Shengli Oilfield, the acidizing experiments in lab have been conducted by use of several kinds of acidizing fluids, including merchandise acid, hydrochloric acids and mud acid fluids with different concentrations. Results have shown that medium - concentration hydrochloric acids and mud acid fluid have a good comprehensive acidizing effects, 1.5% XFZ-1 is used as iron -ion stabilizer, 4% CHG as mutual solvent and 1%-2% NH4Cl as clay stabilizer. The determined acidizing fluid formulation has better properties, such as low surface tension and corrosion rate. In oilfield treatment, ideal acidizing effects have been made by combining artificial lift technology with liquid CO2.

关 键 词：牛35块 酸化 酸液 渗透率 添加剂 

分 类 号：TE357.24[石油与天然气工程—油气田开发工程]