三维定量荧光录井技术在琼东南盆地陵水凹陷气层评价中的应用  

Application of three-dimensional quantitative fluorescence logging technology to the evaluation of gas layers in Lingshui sag,Qiongdongnan Basin,South China Sea

作　　者：郭书生 杨红君 廖茂林 陈现军 陈春涌 

机构地区：[1]中海石油(中国)有限公司湛江分公司 [2]中法渤海地质服务有限公司

出　　处：《录井工程》2015年第3期51-53,58,共4页Mud Logging Engineering

摘　　要：三维定量荧光录井技术作为地层油气含量的物理测量方法,所用仪器的检测精度、数据采集的灵敏度已经可以较好地满足油气勘探的要求。通过对琼东南盆地陵水凹陷已钻探井大量定量荧光录井数据的统计分析,建立了不同流体性质的储集层三维定量荧光激发波长与发射波长解释图板,其中气层主峰最佳激发波长270~290nm、最佳发射波长310~320nm,在此范围内出现的主峰称为气层峰;通过对该地区6口井三维定量荧光激发波长、发射波长、对比级等数据的分析,结合井下测试结果,建立了陵水凹陷不同储集层解释评价标准,为陵水凹陷气藏勘探提供了有效的技术数据支持。现场应用表明其解释评价效果良好,验证了三维定量荧光技术在油气显示发现方面快速、准确的技术优势,尤其在气层的发现、储集层评价方面,该技术具有不可替代的作用。As a physical measurement method for oil and gas content in formation,the precision of the instrument used and sensitivity of the data acquisition of 3-D quantitative fluorescence logging technology can well meet the requirements of oil and gas exploration.Through the statistical analysis on a large number of quantitative fluorescence logging data from drilled exploration wells in Lingshui sag,Qiongdongnan Basin,South China Sea,the authors established the interpretation chart for the excitation wavelength and emission wavelength of three dimensional quantitative fluorescence for reservoirs with different fluid properties,including the best excitation wavelength for the main peak of gas layers is 270-290 nm and the best emission wavelength is 310-320 nm,the main peak appeared in this range is called gas-bearing peak.By analyzing excitation wavelength,emission wavelength,contrast level and other three-dimensional quantitative fluorescence data from 6wells of this area,combining with the downhole testing results,interpretation and evaluation criteria for different reservoirs in Lingshui sag were set up,providing effective technologic data support for gas reservoir exploration in Lingshui sag.Field application showed that the interpretation and evaluation results were good and verified three-dimensional quantitative fluorescence technology had quick and accurate technical advantages in finding oiland gas shows and an irreplaceable role in the discovery of gas layers and reservoir evaluation.

关 键 词：三维定量荧光 激发波长 发射波长 对比级 陵水凹陷 气层评价 解释标准 

分 类 号：TE132.1[石油与天然气工程—油气勘探]