近钻头电阻率测井响应模拟与分析[J].
WANG Y Y，LIU T L，YUE X Z.Simulations and analysis of the near-bit resistivity logging respons[J].Audio Engineering，
DOI：10. 16311/j. audioe. 2021. 02. 018
近钻头电阻率测井响应模拟与分析
王仡仡，刘天淋，岳喜洲
中海油田服务股份有限公司油田技术研究院，
砂泥岩薄互层油气藏等复杂油气资源，研发近钻头电阻率测井技术。在对各向异性电磁场全张量分
进而分析近钻头电阻率测井在超薄油层、
论证其对该类油气藏进行地质导向的可行性。结果表明，近钻头电阻率测井电阻率信号可识别薄储层，
可反映其地层电性特征。近钻头电阻率测井可应用于薄储层实时地层识别与评价。
Simulations and Analysis of the Near-Bit Resistivity Logging Respons
WANG Yiyi, LIU Tianlin, YUE Xizhou
(Well Tech R&D Institute of China Oilfield Services Limited, Langfang 065201, China)
The near-bit resistivity log is developed for identification and evaluation of the ultra-thin layers and thin sand-shale interbeds. Bad on the analytical computation method of electromagnetic fields propagating in anisotropic media, the near-bit resistivity logging respons are simulated. The characteristics of the near-bit resistivity logging respons in unconventional formation models, such as ultra-thin layers and thin sand-shale interbeds, are analyzed, so that the feasibility of geo-steering for the unconventional formations are demonstrated futher. The results show that the apparent resistivity measured by the near-bit resistivity tool can be ud for the identification of the thin layers. The correct respons of the tool indicate the electrical properties of the formations, which proves that the near-bit resistivity log is practicable for the identification and evaluation of the thin layers.
near-bit resistivity logging; anisotropy; thin sand-shale interbeds
随着油气田勘探与开发的不断深入，超薄油层和砂泥岩薄互层油气藏等复杂非常规油人力资源师培训
目前，
为广泛，
然而，近钻头伽马测井探测范围浅，30 cm，
近钻头电阻率测井仪分为上下短节，两短节
。下短节实现电磁波电阻率信号的
通过遥传将数据发射至上短节，由上短节将数据实时传输至地表远端。在下短节中，发
所示。仪
doco400 kHz和
分扇区记
再将多次测量值取均值作为该深度点
电阻率信号采用传统电磁波测井电阻率
幅度比电阻率刻度模式。仪
lucky pig
即电阻率信号源距为22
RA22H、RP22H、RA22M
幅度比电阻率、2 MHz相位
400 kHz相位
接收线圈2近钻头电阻率测井仪线圈系结构示意图
仪器在下井测量前需调零。因此，在数
减去该值
为减去空气零后的近
马来西亚拿督0.1°作为幅度比、
电阻率
电阻率
电阻率纵向分
达0.4 m。
3 薄层响应特征3.1 超薄储层响应特征
如流花区块等，层，电阻率约为
等，存在薄油层，
者储层物性好，
0.1
10
幅
度
比
/
（
d
B
）
0.1
1
10
100
相
位
差
/
（
°
危险英文）
RA22H-model 1 RA22H-model 2 RA22H-model 3 RA22H-model 4 RA22H-model 5
电阻率/（Ω· m ）0
110
100
RP22H-model 1 RP22H-model 2 RP22H-model 3 RP22H-model 4 RP22H-model 5
电阻率/（Ω· m ）
110
100
层地层模型近钻头电阻率响应
RA22M妄人
RA22H
电阻率/（Ω· m ）
01
10
商务英语阅读100
近钻头电阻率测井电阻率测量范围可达0.2～
对超薄油层和砂泥岩薄互层等地层模型电阻率特征响应准确，可进近钻头伽马钻井技术及其tilted antenna for determining the horizontal and vertical resistivities formations [4]
aggressively
BITTAR M.Electromagnetic wave resistivity tool having a tilted antenna for geosteering within a desired payzone US6476609[P].2002-11-05.
[5] FANG S.Method and apparatus of near-bit resistivity for looking-ahead [6]
马明学，结构进行随钻地质导向与地层各向异性评价67
RA22M RA22H
电阻率/（Ω· m ）01
10
100
influenced
1000
目的层电阻率较高模型的电阻率信号响应10
RA22M
RA22H
booking电阻率/（Ω· m ）01
10
100
砂泥岩薄互层地层模型的近钻头电阻率响应
