渤中34-2/4油田注入水相容性研究  

Compatibility between the Injection Water and Formation Water in Bozhong 34-2/4 Oilfield

作　　者：张美[1] 李海涛[1] 山金城 乔文波[1] 李龙飞[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《石油化工高等学校学报》2014年第1期29-34,共6页Journal of Petrochemical Universities

基　　金：中国海洋石油(中国)有限公司项目"中国近海低孔低渗油气藏勘探开发关键技术与实践"(CNOOC-SY-001)和"低渗透油田注水水质综合评价与注水剖面均衡控制研究"(CCL2012TJPZTS0380)

摘　　要：根据渤中34-2/4油田注入水与地层水特征,通过结垢软件预测了注入水与地层水的结垢趋势,静态结垢实验得到了注入水与地层水的结垢量,动态结垢实验评价了注入水结垢对岩心渗透率的伤害程度。结果表明,该油田注入水与地层水相容性较差,注入过程中会产生碳酸钙垢,最大结垢量为1 199mg/L,结垢量为800mg/L时,岩心渗透率伤害程度较大,达到32%。对比了有机磷酸和聚合物两大类共6种阻垢剂的阻垢效果,确定了针对该油田阻垢效果较好的为PBTCA阻垢剂;加入该阻垢剂后,静态阻垢率达85%,动态实验中岩心渗透率的伤害程度降低到13%。Comprehensive evaluation in Bozhong 34-2/4 oilfield has been made via software , static and dynamic scaling experiments .The results show that incompatibility between the injection water and formation water and calcium carbonate scale would produce during injection process ,it’s scaling reached 1 199 mg/L .When scaling of 800 mg/L ,core permeability damage up to 32% .Scale studies of the six kinds of inhibitors suggest that ,for this oilfield ,inhibitor PBTCA has better anti-scaling effect ,static-scaling reduced by 85% and core permeability damage reduced approximately by 13% .

关 键 词：注入水 地层水 相容性 结垢 渗透率伤害 阻垢剂 

分 类 号：TE39[石油与天然气工程—油气田开发工程]