套后电阻率测井仪大功率发射技术研究及应用  

Research and application of high power emission technology of resistivity logging tool for casing wells

作　　者：包德洲[1,2] 陈涛[1,2] 刘杰 彭慧琴[1] 贺飞 李科[1] 

机构地区：[1]中国石油集团测井有限公司,陕西西安710077 [2]中国石油天然气集团公司测井实验基地,陕西西安710077

出　　处：《西安石油大学学报（自然科学版）》2015年第5期101-105,12,共5页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：“十二五”国家科技重大专项“大型油气田及煤层气开发”(编号:2011ZX05020-004)资助

摘　　要：套后电阻率测井技术能有效地用于油气藏动态监测和剩余油分布监测,确定含油饱和度。介绍了自主研制的套后电阻率测井仪的平衡聚焦测量方法、电极系探测特性及性能特点;重点阐述了基于DDS合成的大功率发射控制电路的技术构成及性能指标、仪器的微弱信号检测及刻度检测等。在青海花土沟油田的现场试验表明,仪器电阻率测井数值准确,性能稳定可靠。The resistivity logging technique for casing wells can be effectively used for the dynamic monitoring of oil and gas reservoir and residual oil distribution to determine oil saturation. In this paper,a kind of resistivity logging tool for casing wells is developed,and its balance focusing resistivity measuring method,detection performance of electrode system,detection of weak signal,calibration detection and performance characteristics are presented. The technical structure and performance indexes of the high power emission control circuit based on DDS are described. The field tests of the technique in Qinghai Huatugou Oilfield show that the resistivity logging tool is accurate and reliable.

关 键 词：套后电阻率测井仪 探测特性 大功率发射 信号检测 测井应用 

分 类 号：TE2[石油与天然气工程—油气井工程] TP73[自动化与计算机技术—检测技术与自动化装置]