基于电缆地层取样的气藏流体定量判别新方法  

New Method Based on Wireline Formation Sampling for Quantitative Identification of Fluid Property in Gas Reservoirs

作　　者：刘海波[1] 王彦晚 刘海涅[1] 王猛[1] 

机构地区：[1]中海油田服务股份有限公司油田技术事业部,河北燕郊065201

出　　处：《长江大学学报（自然科学版）》2017年第23期45-49,共5页Journal of Yangtze University(Natural Science Edition)

摘　　要：勘探阶段精确定量计算储层流体性质的方法主要是钻杆中途测试技术(DST),但海上DST评价费用较高。为此,提出利用电缆地层取样技术,将取到的地层流体样品在地面条件下进行气液分离,记录气体和液体样品的体积;利用现场水样分析技术,快速有效地确定液体样品中的各离子浓度,判断样品中泥浆滤液与地层水的体积比例;根据体积系数计算模型,将气体和地层水在常压下的体积折算到地层条件下的体积,得到地层条件下的气水比例,即定量地确定储层的流体性质。该方法进一步量化了测井解释结论,特别是气水同层,得到了地层产水率等参数,有效指导了油田的勘探开发作业。In the exploration phase,the method of accurate quantitative calculation was DST,but the cost for DST evaluation was higher.Therefore the technique of cable formation sampling was put forward to separate the samples of the formation fluid under normal temperature and pressure and record the volume of the gas and liquid samples.By using on-site water sample analysis technique,the concentration of each ion in the liquid sample was determined quickly and efficiently,and the volume ratio of the mud filtrate and the formation water in the sample is determined.According to the volumetric factor calculation model,the volume of the gas and formation water under normal pressure was converted to the volume under the reservoir conditions for obtaining the gas water ratio,namely the quantitatively determining the reservoir fluid properties.The method further quantifies the logging interpretation conclusion,especially for the gas-water stratum,and it obtains the parameters such as the formation water production rate,and effectively guides the exploration and development of the oilfield.

关 键 词：气藏流体 定量判别 现场水分析技术 电缆取样 产水率 

分 类 号：P631.84[天文地球—地质矿产勘探]