高含水后期水淹层测井解释难点及研究方向  

HIGH-WATERCUT-LATE-STAGE INTERPRETATION DIFFICULTIES AND DIRECTION OF WATER-FLOODED-LAYER LOGGINGS

作　　者：刘江 李广菊[1] 刘江玉[2] 敖德逵[1] 李砚明[1] 赵丽娟[1] 

机构地区：[1]大庆钻探工程公司测井公司,黑龙江大庆163412 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2013年第3期126-130,共5页Petroleum Geology & Oilfield Development in Daqing

摘　　要：随着油田开发的不断深人,尤其是在化学驱后,老油田挖潜目标、开发方式调整及水淹层测井的表现方式更趋复杂,解释难度也越来越大。经取心井资料统计分析,总结出高含水后期水淹层解释难点:薄差油层开发和化学驱使部分油层孔隙压力增大或放射性异常及相应的测井响应异常且无理论校正方法;大多数测井方法由于垂向分辨率的限制,满足不了薄层及厚层细分精细解释的要求;由于驱替方式的变化,水淹层中导电流体的含盐度起伏不定,地层水电阻率问题一直没有得到有效解决;化学驱水淹机理与测井响应特征不很清楚。从以往可行性探索实例出发,提出了这4个问题的处理设想和今后研究方向,供测井解释及方法研究人员参考。With an oilfield development, especially after chemical flooding, it is necessary for the oilfietd to adjust the potential-tapping targets and development patterns. The well-logging presenting forms of the waterflooded reservoirs are rather complicated and the interpretation is more and more difficult. Through statistically analyzing the core data, four interpretation difficulties are summarized at high-water-cut late period： thin-and-poor oil layer development and chemical flooding produce the pore-pressure increase of partial oil reservoirs and radioactive anomaly, the well-logging responses are abnormal and more seriously with no theoretical eorrecting method; due to the limitation of vertical resolution, most logging methods cannot meet the requirements of fine and detailed interpretation; the flooding pattern change leads to the unsteady alteration of the salinity for the conducting fluids in waterflooded layers, the formation-resistivity problem is not effectively solved all the time; both the chemical flooding mechanism and logging responses are not made clear. By the previous feasibility exploration cases, the processing considerations and further research direction are put forward to provide references for those logging interpretation and method research fellows.

关 键 词：水淹层测井 化学驱 老区挖潜 地层水电阻率 

分 类 号：P631.811[天文地球—地质矿产勘探]