摘要
为了提高碳氧比测井的纵向分辨率和统计精度,提出一种碳氧比测井仪结构优化设计方案:测井时使用推靠器将测井仪推靠至套管内壁,在探测器与井内介质之间设置伽马射线屏蔽体,让近、远探测器主要记录来自地层方向的伽马射线。基于该方案加工制造了探测系统及推靠器试验短节,与DDCO-III碳氧比测井仪配接后进行了模拟井试验和现场试验,结果显示,推靠式碳氧比测井仪可以有效降低井眼影响,提高碳氧比测井灵敏度,具有更好的油水分辨能力。
To improve the vertical resolution and statistical accuracy of C/O logging,a new structure of the logging tool is proposed.In the processing of logging,the tool is set close to the inner wall of the casing by the sidewall contact device,and the shield between the two detectors and borehole fluids is employed,which makes both the detectors chiefly collect formation information.Based on the program above,the detection system and the sidewall contact device are processed and assembled with DDCO-III C/O logging tool.The simulative well experiment and field test results show that the eccentric C/O logging tool has less borehole effect,higher logging sensitivity and better formation distinguishing ability.
出处
《石油仪器》
2013年第1期12-14,7,共3页
Petroleum Instruments
关键词
碳氧比测井
统计精度
屏蔽体
井眼影响
C/O logging
statistical accuracy
shielding
borehole effect
