姬塬地区长9段致密砂岩储层流体性质解释方法研究与应用  

Research and application of fluid property interpretation method for Chang 9 Member tight sandstone reservoir in Jiyuan area

作　　者：朱连丰 ZHU Lianfeng(GWDC Mud Logging Company in CNPC,Beijing 100101,China)

机构地区：[1]中国石油长城钻探工程有限公司录井公司国际业务项目部

出　　处：《录井工程》2022年第3期60-66,共7页Mud Logging Engineering

摘　　要：鄂尔多斯盆地姬塬地区长9段为典型的低孔低渗储层,受物性影响,储层非均质性强,油水关系相对复杂,同时普遍发育低阻油层、高阻水层,导致常规测井、录井手段难以对储层流体性质进行有效的识别。利用气测、地化、核磁共振等录井技术,结合试油资料,形成了基于参数谱图形态分析的气测、地化以及核磁共振谱图解释法;通过分析姬塬地区长9段储层不同流体性质各项录井参数的变化特征,优选气测全烃、气测湿度比、地化P_(g)、核磁孔隙度等敏感参数,建立了气测全烃与湿度比、地化P与核磁孔隙度两个交会图板。该套解释方法在姬塬地区长9段致密砂岩储层应用45口井,综合解释符合率达82.3%,为油田的高效开发提供了技术保障。Chang 9 Member in Jiyuan area of Ordos Basin is a typical low porosity and low permeability reservoir. Affected by physical properties, the reservoir is highly heterogeneous and the oil-water relationship is relatively complex. At the same time, low resistivity oil layers and high resistivity water layers are commonly developed, which makes it difficult to effectively identify the reservoir fluid properties by conventional well logging and mud logging methods. Using mud logging technologies such as gas logging, geochemistry and NMR with oil testing data, the spectrogram interpretation methods of gas logging, geochemistry and NMR based on morphological analysis of parameter spectra were formed. By analyzing the variation characteristics of various mud logging parameters of different fluid properties in Chang 9 Member reservoirs in Jiyuan area, the sensitive parameters of gas logging total hydrocarbon, gas logging humidity ratio, geochemical Pand NMR porosity were optimized, and two crossplot charts of gas logging total hydrocarbon and humidity ratio, geochemical P_(g) and NMR porosity were established. This set of interpretation method has been applied to 45 wells in Chang 9 Member tight sandstone reservoir in Jiyuan area, with a comprehensive interpretation coincidence rate of 82.3%, providing technical guarantee for the efficient development of the oilfield.

关 键 词：致密砂岩 气测录井 地化录井 核磁共振录井 流体性质 解释方法 姬塬地区 长9段 

分 类 号：TE132.1[石油与天然气工程—油气勘探]