玛湖地区二叠系含沸石砂砾岩岩石物理实验  

Petrophysical Experiment of Permian Zeolite Glutenite in Mahu Area

作　　者：韩波 李新 罗燕颖 霍东凯 丁海琨 张明 HAN Bo;LI Xin;LUO Yanying;HUO Dongkai;DING Haikun;ZHANG Ming(Geological Research Institute,China National Logging Corporation,Xi’an,Shaanxi 710077,China;Well Logging Key Laboratory,China National Petroleum Corporation,Xi’an,Shaanxi 710077,China;Changqing Branch,China National Logging Corporation,Xi’an,Shaanxi 710201,China;International Cooperation Department,China National Logging Corporation,Xi’an,Shaanxi 710077,China;Training center,China National Logging Corporation,Xi’an,Shaanxi 710201,China)

机构地区：[1]中国石油集团测井有限公司地质研究院,陕西西安710077 [2]中国石油天然气集团有限公司测井重点实验室,陕西西安710077 [3]中国石油集团测井有限公司长庆分公司,陕西西安710201 [4]中国石油集团测井有限公司国际合作处,陕西西安710077 [5]中国石油集团测井有限公司培训中心,陕西西安710201

出　　处：《测井技术》2022年第4期397-403,共7页Well Logging Technology

基　　金：中国石油天然气集团有限公司科学研究与技术开发项目“含煤盆地富油煤岩石物理响应与测井方法研究”(2021DJ3805);中国石油集团测井有限公司十大科技项目中项目八课题“岩石物理实验分析技术研究与应用”(CNLC2022-08B01)。

摘　　要：新疆准噶尔盆地玛湖地区二叠系广泛发育沸石含量较高的砂砾岩储层,该类储层中沸石赋存状态复杂,分布不均匀且具有较强水敏性,样品制备成柱塞岩心比较困难,且含沸石储层的电、声、核等测井响应特征不明确,给储层评价造成困难。通过对碎样及柱塞岩心进行常规物性、电阻率、核磁共振、全岩X衍射、自然伽马能谱、声学和力学等岩石物理实验,并以矿物组分为依托进行沸石与各项岩石物理参数之间的关系分析。研究了实验室条件下沸石的岩石物理响应特征,如低密度、低自然伽马、高电阻率等。在研究区内,根据沸石含量的不同,确定出干样状态下不同的T_(2)几何平均值。在计算有效孔隙度时,把该对应弛豫时间之前的核磁共振信号校正掉,形成一套含沸石砂砾岩核磁共振孔隙度测量实验室校正方法。Glutenite reservoirs with high zeolite content are widely developed in Permian formation in Mahu area of Junggar basin,Xinjiang.The existing state of zeolite in these reservoirs is complex,zeolite distribution is uneven and the reservoirs are highly water-sensitive.The electrical,acoustic,nuclear and other logging response in these glutenite reservoirs is not clear,and it brings difficulties to reservoir evaluation.Based on the broken sample and the plunger core,the petrophysical experiments for regular physical properties,electrical resistivity,XRD,nuclear magnetic resonance,nature gamma spectrum,acoustics and mechanics are carried out,and the relationships between zeolite and various rock physical parameters are analyzed.The petrophysics response characteristics of zeolite under laboratory conditions are studied,such as low density,low nature gamma,high resistivity,etc.In the study area,according to the different zeolite content,different T 2 geometric mean values are determined in the dry state.And this part of the NMR signal is removed when calculating the effective porosity.In this way a set of laboratory calibration methods for NMR porosity measurement of zeolite glutenite is formed.

关 键 词：岩心实验 沸石 砂砾岩 校正方法 岩石物理性质 核磁共振孔隙度 玛湖地区 

分 类 号：P631.84[天文地球—地质矿产勘探]