基于地化录井技术的储层快速评价方法研究——以恩平凹陷北部斜坡带为例  

Research on rapid reservoir evaluation method based on geochemical logging technology:A case from northern slope belt of Enping depression

作　　者：田立强 熊亭 邓卓峰 梁欣怡 田宇[3] 雷宇田 TIAN Liqiang;XIONG Ting;DENG Zhuofeng;LIANG Xinyi;TIAN Yu;LEI Yutian(China France Bohai Geoservices Co.,Ltd.,Tianjin 300457,China;Shenzhen Branch,CNOOC(China)Co.,Ltd.,Shenzhen,Guangdong 518000,China;No.1 Oil Production Plant of PetroChina Changqing Oilfield Company,Yan'an,Shaanxi 716009,China;No.12 Oil Production Plant of PetroChina Changqing Oilfield Company,Xi'an,Shaanxi 710299,China)

机构地区：[1]中法渤海地质服务有限公司 [2]中海石油(中国)有限公司深圳分公司 [3]中国石油长庆油田公司第一采油厂 [4]中国石油长庆油田公司第十二采油厂

出　　处：《录井工程》2023年第3期32-38,43,共8页Mud Logging Engineering

摘　　要：恩平凹陷北部斜坡带韩江组油层具有埋藏浅、厚度薄、岩性细、电阻率低等特征,导致随钻测井解释评价困难;同时受油气运移过程中次生改造作用及工程钻井提速等因素的影响,气测录井响应特征纵向差异大,油层响应特征不明显,录井解释评价符合率低,无法满足随钻快速决策需求。为此,开展了热解气相色谱与岩石热解分析相结合的地化录井技术评价储层原油性质和储层流体类型的研究,建立了热解气相色谱谱图分析与轻重比参数法相结合的原油性质快速识别标准,以及热解气相色谱谱图分析与油产率指数、轻重比参数相结合的储层流体类型识别图板。该评价方法经过现场实际应用,取得了较好的效果,提高了录井解释评价符合率,满足了随钻快速决策需求。The reservoir of Hanjiang Formation in the northern slope belt of Enping depression has the characteristics of shallow burial,thin thickness,fine lithology and low resistivity,which will cause difficulties in logging interpretation and evaluation while drilling.At the same time,due to the influence of secondary transformation in the process of oil and gas migration and engineering drilling speed increase and other factors,the response characteristics of gas logging is of large difference vertically,so the response characteristics of reservoir are not obvious,and the coincidence rate of mud logging interpretation and evaluation is low,which fail to meet the needs of rapid decision⁃making while drilling.For this reason,the geochemical logging technology which is the combination of pyrolysis gas chromatography and rock pyrolysis analysis is carried out to evaluate the properties of reservoir crude oil and the fluid types of reservoir.The rapid identification standards of crude oil properties are established by combining pyrolysis gas chromatography analysis with parameter method for the ratio of light hydrocarbon components to heavy hydrocarbon components.The identification chart of reservoir fluid type is also established,which combines pyrolysis gas chromatography analysis with oil yield index and the ratio of light hydrocarbon components to heavy hydrocarbon components.The evaluation method has achieved good results on field application and the coincidence rate of mud logging interpretation and evaluation has been improved,which meets the needs of rapid decision⁃making while drilling.

关 键 词：地化录井 岩石热解 热解气相色谱 解释评价 录井 恩平凹陷 

分 类 号：TE132.1[石油与天然气工程—油气勘探]