南川区块五峰-龙马溪组页岩气储层测井评价方法  

Logging Evaluation Method for Shale Gas Reservoirs of Wufeng-Longmaxi Formation in Nanchuan Block

作　　者：王安龙 孙小琴 李小龙 陈晓芳 陈笑宇 孙伟 WANG An-long;SUN Xiao-qin;LI Xiao-long;CHEN Xiao-fang;CHEN Xiao-yu;SUN Wei(Research Institute of Petroleum Exploration and Development,East China Branch Company,SINOPEC,Nanjing 210011,China)

机构地区：[1]中国石油化工股份有限公司华东油气分公司勘探开发研究院,南京210011

出　　处：《科学技术与工程》2020年第34期14046-14052,共7页Science Technology and Engineering

基　　金：国家科技重大专项(2016ZX05061);中国石化科技开发部项目(P18057-2)。

摘　　要：以常规测井资料为基础,以数理模型和相关性分析为主要手段,开展页岩气储层测井评价。以南川区块页岩气为例,考虑超压-常压等地质背景差异影响,首次分构造类型(背斜及斜坡带)分别建立测井解释模型;考虑到黄铁矿等导电矿物对电阻率饱和度法的不利影响,采用非电法饱和度模型,系统建立了包括页岩矿物组分、总有机碳含量、孔隙度、含气饱和度、吸附气含量、游离气含量、总含气量及脆性矿物组分测井解释模型。通过与实验分析数据对比及实际井处理解释,验证了模型的准确性及方法的实用性。该模型将在气田内推广和使用。Based on conventional logging data,a mathematical model and log curve fitting analysis was used to evaluate the loggings of shale gas reservoirs.Taking shale gas in the Nanchuan block as an example,the influence of geological differences between overpressure gas layers and normal pressure gas layers was considered,an interpretation model was established for different structural types(anticline zone and slope zone)for the first time.In addition,considering the adverse effects of conductive minerals such as pyrite on the resistivity saturation method,a non-electrical saturation model was applied and an interpretation model was built for shale mineral composition,organic carbon content,porosity,gas saturation,adsorbed gas content,free gas content,total gas content,and brittle mineral.The accuracy and the practicability of the method were verified by comparison with experimental analysis data and interpretation of actual well processing,and the method has been promoted and used in the gas fields.

关 键 词：页岩气 常规测井 六性评价 定量计算 页岩气分类 

分 类 号：TE132.2[石油与天然气工程—油气勘探]