3种交联剂与HPAM溶液交联后的调驱效果

STUDY ON THREE TYPES OF CROSSLINKER AND THEIR PROFILE MODIFICATION EFFICIENCY IN HPAM SOLUTION

张建国 余维初 罗跃

Zhang Jianguo Yu Weichu Luo Yue Chen Xiaojiang

长江大学化学与环境工程学院, 湖北荆州 434023

Changjiang University

对3种交联剂的制备方法及与HPAM溶液的交联性能进行了室内试验。将乳酸钠、重铬酸钠、有机硫按3:1:2质量比配备,制成有机醛;将重铬酸钠、氯化钴、有机硫和乳酸钠按6:3:8:20质量比配备,制备成复合金属交联剂。3种交联剂分别加入HPAM聚合物溶液中,结果证明,在HPAM聚合物溶液中加入有机铬、有机醛和复合金属复合金属交联剂后的调驱效果好于其它2种交联剂。复合金属交联剂适合于矿化度30000mg/L、温度70℃左右的地层,可提高采收率近27.3%。

Three types of crosslinker are prepared and their properties in HPAM solution are evaluated in laboratory. To prepare organic aldehyde by sodium lactate, sodium bichromate and organic sulfur in a mess ratio of 3/1/2, and prepare composite metal crosslinker by sodium bichromate, cobalt chloride, organic sulfur and sodium lactate in 6/3/8/20. When 3 types of crosslinker are added in the HPAM solution, it is detected that the profile modification efficiency of Al-Cr composite crosslinker in HPAM polymer solution is better than that of the two others. The composite crosslinker can increase the oil recovery by 27.3% and it is suitable for applying in the formation with a temperature of about 70℃ and a salinity of 30000 mg/L.

10.3969/j.issn.1000-7393.2004.04.021