Prospect Forecast for Precise Processing and Application of Multi-dimensional Nuclear Magnetic Resonance Logging Tool Data
The peak of T2 spectrum inverted by echo signals that are measured by one-dimensional nuclear magnetic resonance logging tools would overlap in the complicated reservoir that oil, water and gas coexist, with the difficulties in identifying the oil, water and gas.Currently, the multi dimensional nuclear magnetic resonance logging technology developed by this paper is one of the greatest concerns in the world, which is to obtain T1_T2 spectrum, T2_D spectrum through observing the longitudinal relaxation time of T1 spectrum, the transverse relaxation time of T2 spectrum and the diffusion coefficient D, thus distinguishing and analyzing the types and contents of the downhole fluids more accurately.The multi-dimensional nuclear magnetic resonance logging technology referred in this paper is featured with a multi-dimensional probe, pulse measurement sequence, hardware circuit, multi-dimensional data processing software and all key technologies while remaining compatible with one-dimensional nuclear magnetic logging technology.The refined data processing algorithms proposed by this paper rectify the echo signals for the stimulated echo and non-resonance effect oscillation in terms of the multi-dimensional data processing algorithms, and proposes to rectify the influence of the core built-in gradient on multi-dimensional spectrum by the best built-in gradient correction method.The downhole multi-dimensional nuclear magnetic inversion software has to process a great amount of data, with a low processing speed of computer, and this research proposes to make full use of multi-core performance for parallel computing innovatively regarding the post-processing software, which can improve the speed of data processing significantly.The multi-dimensional nuclear magnetic resonance logging technology researched and developed by this paper is a pioneer in China, which represents another major breakthrough in the area of domestic nuclear magnetic resonance logging technology, and has been tested on site, and the logging results are basically the same as the strata information.
Multi-dimensional nuclear magnetic logging T2-D spectrum T1-T2 spectrum
Jiang Zhimin Dang Yupu Xue Zhibo Zhang Jiawei
Oilfield Technology Research Institute of China Oilfield Services Limited,101149
国际会议
西安
英文
36-49
2017-09-20（万方平台首次上网日期，不代表论文的发表时间）