南泥湾294井区注水见效规律分析及调整措施研究  

Study on Water Injection Effect Law Analysis and Adjustment Measures in 294 Well Area in Nanniwan Oilfield

作　　者：康园园 王守军 吕建国 

机构地区：[1]延安大学石油学院,陕西延安716000 [2]陕西省川庆钻探工程有限公司长庆钻井总公司第二工程项目部,陕西西安710000

出　　处：《延安大学学报（自然科学版）》2017年第4期22-25,共4页Journal of Yan'an University：Natural Science Edition

摘　　要：南泥湾采油厂294井区属于特低孔、超低渗储层,通过分析油井的注水见效规律,为后期实施调整措施提供依据。首先通过计算注水区与非注水区的5个注水效果评价指标并进行对比,可知注水在一定程度上是见效的。然后结合月总递减率和见水见效历时对单井的注水见效规律进行分析,将注水区块油井的见效程度分为五类:见效明显井、见效一般井、注采反映不明确井、不见效井和水淹井。其中注水反映不明确和注水不见效所占比例高达一半以上,还有10口水淹井。最后针对注水效果不理想的井提出治理建议,包括洗井酸化、完善射孔层位、调整注采井网以及空气空气泡沫驱。The 294 well area of Nanniwan oilfield belongs to ultra-low porosity and ultra-low permeability reservoir.Through the analysis of the water injection effect law of the oil well,it provides the basis for the later implementation adjustment measures.First of all,by calculating and contrasting the five water injection effect evaluation indexes of water injection area and non-water injection area,it can be seen that water injection was effective to some extent.Then combined with the monthly total decline rate and the water effect duration,the water injection effect law of single well was analyzed,The effectiveness of the oil wells in the water injection block was divided into five categories,which were obvious effective wells,generaleffective wells,wells without clear injection-production reflects,no effectness wells and flooded wells.Water flooding fuzzy reflects and water flooding wells account for more than half of the proportion.And there are 10 flooded wells.Finally,the treatment suggestions for the well water injection effect are proposed,including well washing acidizing,improving perforating horizon,adjusting injection well network and air foam flooding.

关 键 词：南泥湾294井区 注水 见效规律 空气泡沫驱 

分 类 号：F407.22[经济管理—产业经济]