摘要
青海油田油气藏类型丰富,地质特征差异较大,单一饱和度测井方法难以满足不同油气藏剩余油饱和度测井和精细解释评价的需要。脉冲中子全谱饱和度测井集碳氧比能谱、氯能谱、中子寿命、氧活化测井技术于一体,一次下井能录取丰富的测井曲线。介绍了脉冲中子全谱饱和度测井原理、技术特点、实验刻度、资料解释以及现场应用。脉冲中子全谱饱和度测井在复杂水淹层识别方面效果明显,且不受低矿化度地层水影响;在涩北高矿化度、高泥质、低电阻率气田能准确识别气层、水淹层。应用该测井技术测井20余井次,具有较强的实用性,为油气田开发提供了翔实准确的饱和度测井资料。
Single logging method is difficult to meet the needs of remaining oil saturation logging and detailed evaluation in oil and gas reservoirs in Qinghai oilfield because of its rich reservoir types and different geological features. However, pulsed neutron full-spectra saturation logging （PSSL）, integrated with carbon/oxygen spectrum logging, chlorine spectrum logging, neutron lifetime logging and oxygen activation logging, can provide rich logging curves through one trip to solve this problem. By introducing its logging principles, technical characteristics, experimental calibration, data interpretation and field applications, it is shown that this logging technology has strong practicability. Field examples has proved that pulsed neutron full-spectra saturation logging got good results in identifying complex water flooded layers, and is not affected by low formation water salinity. It also got good results in accurately identifying gas layers and water flooded layers in the high salinity, high shale volume and low resistivity in Sebei Gasfield. It has been applied in more than 20 wells, which provided detailed and accurate saturation logging data for the oil and gas field developments.
出处
《测井技术》
CAS
CSCD
北大核心
2014年第5期627-633,共7页
Well Logging Technology
关键词
全谱饱和度测井
测井解释
碳氧比
水淹层
低矿化度
气层识别
full-spectra saturation logging, log interpretation, carbon/oxygen ratio, water floo-ded layer, low salinity, gas layer identification
