石油测井倾斜影响校正的一种新方法
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摘要
斜井中的倾斜影响包括体积项影响和电荷项影响,这种影响会造成油气解释评价出现巨大偏差,因此做倾斜影响校正即消除电荷项产生的影响和体积项产生的影响,将斜井测量数据转换为和直井相同的测量数据,本文在结合基于数值几何因子校正方法和基于解析几何因子倾斜校正方法的基础上,提出一种新的倾斜影响校正理论方法,最后用不同倾角的Oklahoma地层模型对新方法的效果进行了模拟仿真。结果表明基于新方法设计的滤波器和算法能够有效校正倾角小于80°的斜井测量数据,校正后的曲线和直井测量曲线基本重合,达到预期处理结果。
The dipping effect includes the volumetric effect and the charge effect,which will cause a large deviation in the interpretation of the oil and gas. Therefore,dipping correction is to eliminate the impact caused by volume term and charge term,by means of deviated well data being converted into similar vertical well measurement data.Based on the numerical geometry factor correction method and the analytic geometry factor dipping correction method,this paper proposes a new theoretical method of dipping eflect correction. Finally,the effect of the new method is simulated by the Oklahoma formation model with different dipping angles. The results show that the filter and algorithm based on the new method can effectively correct the measured data of the inclined well with the inclination angle less than 80°. The corrected curve and the straight curves coincide very well,and the expected processing result is achieved.
The dipping effect includes the volumetric effect and the charge effect,which will cause a large deviation in the interpretation of the oil and gas. Therefore,dipping correction is to eliminate the impact caused by volume term and charge term,by means of deviated well data being converted into similar vertical well measurement data.Based on the numerical geometry factor correction method and the analytic geometry factor dipping correction method,this paper proposes a new theoretical method of dipping eflect correction. Finally,the effect of the new method is simulated by the Oklahoma formation model with different dipping angles. The results show that the filter and algorithm based on the new method can effectively correct the measured data of the inclined well with the inclination angle less than 80°. The corrected curve and the straight curves coincide very well,and the expected processing result is achieved.
引文
[1]张庚骥.感应测井的高次几何因子[J].地球物理学报,1982(4):25
[2]Sheng F,Tsili W Ingo G M.et al.Dipping-Effect Correction for the High-Definition Induction Logging Too Using New Geometrical Factors[J].Society of Petroleum Engineers Inc,1999(10)3-6.
[3]张建华,刘振华.电法测井原理与应用[M].西安:西北工业大学出版社,2002.
[4]Xiao,J.Beard,D.and Zhou,Q.A pratical dipping-effect correction for Multiarray Induction tools in Deviated wells[J].SPWLA 37th Annual Logging Symposium,1996,June 16-19.
[5]仵杰,桂彩云.阵列感应测井信号处理方法研究[J].石油仪器,2011,4(15):30-33.
[6]徐秉铮,欧阳景铮.信号分析与相关技术[M].北京:科学出版社,1981.
[7]马启宁.测井原理与仪器[M].北京:石油工业出版社,2010.
[8]李虎,范宜仁.阵列感应测井五参数反演方法[J].中国石油大学学报(自然科学版),2012(6):40-43.
[9]陈仲良,王怒涛,呈皇辉.有关多层合采和斜井的试井解释[J].油气井测试,2017,26(3):29-32.
[2]Sheng F,Tsili W Ingo G M.et al.Dipping-Effect Correction for the High-Definition Induction Logging Too Using New Geometrical Factors[J].Society of Petroleum Engineers Inc,1999(10)3-6.
[3]张建华,刘振华.电法测井原理与应用[M].西安:西北工业大学出版社,2002.
[4]Xiao,J.Beard,D.and Zhou,Q.A pratical dipping-effect correction for Multiarray Induction tools in Deviated wells[J].SPWLA 37th Annual Logging Symposium,1996,June 16-19.
[5]仵杰,桂彩云.阵列感应测井信号处理方法研究[J].石油仪器,2011,4(15):30-33.
[6]徐秉铮,欧阳景铮.信号分析与相关技术[M].北京:科学出版社,1981.
[7]马启宁.测井原理与仪器[M].北京:石油工业出版社,2010.
[8]李虎,范宜仁.阵列感应测井五参数反演方法[J].中国石油大学学报(自然科学版),2012(6):40-43.
[9]陈仲良,王怒涛,呈皇辉.有关多层合采和斜井的试井解释[J].油气井测试,2017,26(3):29-32.