疑难气层测井识别方法应用研究  

Application Study of Logging Identification Method of Difficult Gas Reservoirs

作　　者：王功军[1] 王冬梅[2] 黄文新[3] 侯浩波[1] 

机构地区：[1]武汉大学资源与环境科学学院,湖北武汉430072 [2]荆州职业技术学院,湖北荆州434023 [3]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023

出　　处：《石油天然气学报》2011年第2期104-107,167,共4页Journal of Oil and Gas Technology

基　　金：中国石油天然气股份有限公司重点项目(2008041)

摘　　要：在疑难气层的测井评价过程中,由于储集层复杂、非均质性强、孔隙度、渗透率较低,气层的测井响应特征不明显,常规测井方法易造成气层测井评价的漏判和误判。针对不同储层条件的疑难气层,采用了视双孔隙度差值法、视中子孔隙度合成声波时差法、中子合成弹性模量背景值识别法、交会图油气识别法等测井识别方法,较准确地识别气层,提高了气层识别率。In the process of logging evaluation of difficult gas reservoirs,because the reservoir condition was complex and the anisotropy was strong with relative low porosity and permeability,the logging response characters of gas reservoirs were not obvious.So the conventional methods would easily result in lost judgement and misjudgement in gas reservoir logging evaluation.In view of different gas reservoir conditions,well logging identification methods such as methods of apparent dual porosity difference,apparent neutron porosity synthesized acoustic travel time,identification by neutron synthesized elastic modulus background value and crossplot hydrocarbon recognition are used.The methods can be used to identify gas reservoirs more exactly,and improve the gas reservoir identification ratio.

关 键 词：测井评价 双孔隙度差值法 伪声波时差 弹性模量 疑难气层 

分 类 号：P618.13[天文地球—矿床学] P631.81[天文地球—地质学]