摘要
目的分析延长油区延长组注水开发过程中注水水质对储层伤害的因素,为延长油区注水水质标准的建立提供相关依据。方法实验分析和综合分析。结果从腐蚀性、堵塞性和敏感性3个方面的因素考虑,结合各油田储层物性特征,综合分析储层伤害的原因,认为溶解氧是主要腐蚀性因素;酸敏和水敏是主要敏感性因素。堵塞性和酸敏及水敏是对延长油区储层造成伤害的主要因素。结论研究区注入水与地层水结垢量大,配物性差,水溶解氧远高于行业标准,是主要腐蚀性因素,但并非伤害储层的主要因素。
Aim According to the analysis of the damage factors to the reservoirs in the process of the injected water, make the standards of injection water＇s quality in every oilfield of Yanchang oil region. Methods Experimental analysis with Comprehensive analysis. Results Considering from causticity, sensitivity and plugging, and combining the characters of lithologic and petrophysic, synthetically analyse the damage factors to the reservoirs. Dissolved oxygen is the main factor of caustic factors; Acid-sensitivity and water-sensitivity are the main factors of sensitivity factors. Plugging, Acid-sensitivity and water-sensitivityare the main damage factors to the reservoirs. Conclusion Compatibility of injected water with formation water is poor,water scaling is big in the study area. dissolved oxygen which is much higher than the industry standard , is the main factor of caustic factors, but is not he main damage factor to the reservoirs.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第4期667-671,共5页
Journal of Northwest University（Natural Science Edition）
基金
"十一五"国家科技支撑计划基金资助项目(2007BAB1701)
国家科技重大专项基金资助项目(2008ZX05005)
国家重点基础研究发展计划"973"基金资助项目(2003CB214605)
关键词
延长油区
注水水质
腐蚀性
堵塞性
敏感性
Yanchang oil region
quanlity of in jection water
compatibility
suspended solids
sensitivity
