脉冲中子能谱测井解释方法研究

发布时间：2018-02-24 16:46

本文关键词： 脉冲中子能谱测井剩余油饱和度测井数据处理解释模型　出处：《西南石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：YX油田由于储层岩性差异大、矿物成分复杂、非均质性强以及在采油过程中采用的水驱油技术导致该地区地层水矿化度难以确定等问题,使中子寿命测井在该地区不再适用。为了有效监测地层剩余油饱和度,寻找潜力层,提高油气采收率,YX油田引进了脉冲中子能谱饱和度测井仪(PSSL)。该仪器集碳氧比能谱测井、中子寿命测井于一体,不受矿化度的限制,能够测量丰富的地层信息。建立具有地区性的解释模型有利于提高剩余油饱和度解释精度。论文第二章剖析了 PSSL的测井原理,主要介绍了 PSSL非弹性散射测量模式和俘获测量模式,详细分析了岩性、孔隙度、井眼环境及测井施工等因素对测井响应的影响。第三章对PSSL非弹性散射测量模式测井资料的处理解释方法进行了深入研究,提出了利用PSSL测井资料计算泥质含量、孔隙度、含油饱和度的方法,基于岩石物理体积模型建立了碳氧比剩余油饱和度解释模型和俘获测量模式剩余油饱和度解释模型,对于岩性、测井施工对测井资料的影响提出了校正方法。第四章通过对两口 PSSL测井资料的处理,验证了上述方法的可行性和正确性,解释符合率较高。研究表明,PSSL测井仪测量模式丰富,其测井资料能用于泥质含量、孔隙度、含油饱和度的计算。PSSL测井响应主要受岩性、孔隙度、井眼环境及测井施工等因素的影响。在PSSL测井资料的处理过程中,对含泥质、含钙质、零值漂移等影响进行校正处理,可提高解释精度。基于岩石物理体积模型并结合该地区未开发储层完井资料和PSSL测井资料建立的含油饱和度解释模型克服了没有刻度井资料的问题,应用效果好,地区适用性强。
[Abstract]:In YX Oilfield, the reservoir lithology is different, the mineral composition is complex, the heterogeneity is strong, and the water flooding technology used in the oil recovery process leads to the difficulty of determining the salinity of formation water in this area. The neutron lifetime logging is no longer applicable in this area. In order to effectively monitor the residual oil saturation in the formation, to find the potential layer and to improve the oil and gas recovery, the pulsed neutron spectrum saturation logging tool (PSSLL) has been introduced into YX Oilfield. The instrument collects carbon and oxygen ratio energy spectrum logging. Neutron lifetime logging can measure abundant formation information without the limitation of mineralization. The establishment of local interpretation model is helpful to improve the interpretation accuracy of residual oil saturation. In chapter 2, the logging principle of PSSL is analyzed. The PSSL inelastic scattering measurement mode and capture measurement mode are introduced, and the lithology and porosity are analyzed in detail. The effect of borehole environment and logging operation on logging response. In chapter 3, the processing and interpretation method of logging data of PSSL inelastic scattering measurement mode is deeply studied, and the calculation of muddy content and porosity by using PSSL logging data is put forward. Based on the physical volume model of rock, the interpretation model of residual oil saturation of carbon-oxygen ratio and the interpretation model of residual oil saturation of capture measurement model are established. In chapter 4th, the feasibility and correctness of the above method are verified by processing two PSSL logging data, and the interpretation coincidence rate is high. The research shows that the measuring mode of PSSL logging tool is abundant. The log data can be used to calculate the shale content, porosity and oil saturation. The log response is mainly affected by lithology, porosity, wellbore environment and logging operation. The effects of calcium, zero drift, etc., are corrected, The oil saturation interpretation model based on the petrophysical volume model and the PSSL logging data and the completion data of the undeveloped reservoir in this area has overcome the problem of no calibration well data, and the application effect is good. Regional applicability is strong.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE151

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