波长偏差解释评价方法在冀东油田油气层评价中的应用

The application of wavelength deviation interpretation and evaluation methods in the oil and gas evaluation in Jidong Oilfield

2010年三维定量荧光录井技术在冀东油田开始推广应用,基于该技术的解释评价方法地域性较强,研究适用于冀东油田的解释评价图板与标准是确保成功应用的关键。针对这一现状,首先,借助大港油田成功应用该技术的经验,在系统分析冀东和大港两个油田190口井原油样品和314种钻井液添加剂的基础上,总结出了原油和钻井液添加剂图谱分布特征;然后,经过现场对冀东油田36口井三维定量荧光图谱的分析研究,结合试油数据,依据三维定量荧光图谱特征,首次引入了解释评价参数——波长偏差;最后,通过该油田9口井定量荧光数据的统计分析,结合试油结果,得出了定量荧光对比级别分别与最佳激发和最佳发射波长偏差的解释评价图板及标准,以此为基础形成了波长偏差解释评价方法。现场应用表明,该方法能够快速有效地指导录井现场进行油气显示判断与储集层流体性质评价,解释评价符合率为82%。

In 2010,three-dimensional quantitative fluorescence logging technology has been promoted the use in Jidong Oilfield,based on the strong regional interpretation and evaluation of the technology,the research of applicable interpretation and evaluation charts and standards for Jidong Oilfield is the key to the successful application.In response to this situation,first of all,by means of the successful experience of application of the technology in Dagang Oilfield and on the basis of systematically analyzing 314 kinds of drilling fluid additives and the samples of crude oil from 190 wells in Jidong and Dagang oilfields,the authors summed up the spectrum distribution characteristics of crude oil and drilling fluid additives.Then,after the on-site analysis on three-dimensional quantitative fluorescence spectra from 36 wells in Jidong Oilfield and combined with oil testing data and based on the three-dimensional quantitative fluorescence spectrum characteristics,they first introduced the interpretation and evaluation parameters-wavelength deviation.Finally,by the field statistical analysis of quantitative fluorescence data from 9 wells and combined with oil test results,they obtained the interpretation and evaluation charts and standards of quantitative fluorescence contrast levels with optimum excitation and emission wavelength deviations respectively,the wavelength deviation interpretation and evaluation method is formed on this basis.The field application showed that the method is able to quickly and efficiently guide the evaluation and judgment of oil and gas shows and reservoir fluid properties for the on-site mud logging,the coincidence rate of interpretation and evaluation reached 82%.