用随钻核磁共振测井识别JZ油田沙河街组地层流体  

New Techniques for Identifying Fluid in the Shahejie Formation in JZ Oilfield by NMR-LWD

作　　者：徐锦绣 彭雪梅[2] 陆云龙 刘欢 XU Jinxiu;PENG Xuemei;LU Yunlong;LIU Huan(Bohai Oil Research Institute, Tianjin Branch of CNOOC Ltd., Tianjin 300459, China;Exploration Division, Dagang Oilfield Branch of PetroChina, Tianjin 300280, China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]大港油田分公司勘探事业部,天津300280

出　　处：《测井技术》2020年第2期192-197,共6页Well Logging Technology

基　　金：十三五国家科技重大专项“渤海油田高效开发示范工程”(2016ZX05058-001);渤海油田3000万吨持续稳产关键技术研究(CNOOC-KJ 135 ZDXM36 TJ)。

摘　　要：渤海JZ油田沙河街组首次使用了随钻核磁共振测井,实际应用表明随钻核磁共振测井在储层流体性质识别方面具有独到的优势。总结随钻核磁共振测井在不同岩性、物性及不同流体中的响应特征,利用核磁共振谱特征定性判别气、油、水的方法,提出用含烃指示曲线法和水谱重构法2个新技术定量识别流体:利用轻质油和水的横向弛豫时间差异及孔隙结构参数计算含烃指示曲线定量识别油、水层;利用球管模型和正态分布模型分别拟合束缚水和可动水核磁谱重构水谱,然后与实测核磁谱对比判别油水层,在目标油田应用效果良好。Nuclear magnetic resonance logging while drilling(NMR-LWD)has been used in the Shahejie formation of Bohai JZ oilfield for the first time.The results show that NMR-LWD has unique advantages in identifying reservoir fluid properties.This paper firstly summarizes the responses recorded in NMR-LWD data from different lithology,reservoir physical properties and fluids,and puts forward two techniques for qualitatively identifying gas,oil and water using the characteristics of nuclear magnetic spectra.The first uses“hydrocarbon-bearing indicator curves”which are estimated by the difference of the horizontal relaxation time between light oil and water and pore structure parameters.The second means“water spectra reconstruction”which fits the nuclear magnetic spectra of bound water and movable water using a spherical tube model and a normal distribution model,and then compares with actual nuclear magnetic spectra.These techniques have good applications in target oil fields.

关 键 词：随钻核磁共振测井 流体识别 含烃指示曲线 水谱重构 核磁谱特征值 孔隙结构参数 

分 类 号：P631.84[天文地球—地质矿产勘探]