“新三组合”测井技术在鄂尔多斯盆地致密砂岩储层评价中的应用  

Application of“New Three-Combination”Logging Technology for Evaluation of Tight Sandstone Reservoir in Ordos Basin

作　　者：郭向东[1] 崔宏俊 武延亮 孙亚隆 曹雄伟 高其宇 GUO Xiangdong;CUI Hongjun;WU Yanliang;SUN Yalong;CAO Xiongwei;GAO Qiyu(Yanchang Gas Field No.1 Gas Production Plant,Shaanxi Yanchang Petroleum(Group)CO.LTD.,Yan'an,Shaanxi 716000,China)

机构地区：[1]陕西延长石油(集团)有限责任公司延长气田采气一厂,陕西延安716000

出　　处：《测井技术》2022年第3期346-351,共6页Well Logging Technology

摘　　要：鄂尔多斯盆地致密砂岩储层具有非均质性强、岩性致密、孔隙结构复杂、连通程度差、孔隙度与渗透率极低等特征,致使常规测井仪器响应特征不明显,储层评价准确性不高。为有效提高致密砂岩储层评价的准确性,采用元素俘获能谱、核磁共振、介电扫描测井相结合的“新三组合”测井技术,对致密砂岩储层进行综合评价。与“常规三组合”测井技术及其测井解释模型相比,“新三组合”测井技术能够提供丰富的储层物理参数,ELANPlus测井解释模型能够更精细地计算储层特征参数,使储层岩性及流体识别、孔隙度计算更加准确、直观、可靠。实际应用表明,在研究区储层评价中“新三组合”测井技术能够提高致密砂岩储层评价的准确性。Tight sandstone reservoirs in Ordos basin have the characteristics of strong heterogeneity,tight lithology,complex pore structure,poor connectivity,particularly low porosity and permeability,which make the response characteristics of conventional logging tools unobvious,and the reservoir evaluation is inaccurate.In order to effectively improve the accuracy of tight sandstone reservoir evaluation,the“new three-combination”logging technology combining elemental capture spectroscopy,combinable magnetic resonance and array dielectric logging are used.Comparing with the“conventional three-combination”logging technology and log interpretation model,the“new three-combination”logging technology can provide lots of reservoir physical parameters,and the ELANPlus log interpretation model can calculate the reservoir characteristic parameters more finely.So that the layer lithology,fluid identification and porosity calculation are more accurate,intuitive and reliable.The evaluation of reservoirs in the study area shows that the“new three-combination”logging technology can improve the evaluation accuracy of tight sandstone reservoir.

关 键 词：储层评价 测井新技术 测井解释模型 致密砂岩 鄂尔多斯盆地 

分 类 号：P631.84[天文地球—地质矿产勘探]