【作者】 赵烈加；

【导师】 刘卫；

【作者基本信息】 中国科学院研究生院（渗流流体力学研究所） ， 流体力学， 2008， 硕士

【摘要】 二维NMR流体识别技术是国际上少数石油公司拥有的高新技术,一直以来为他们所垄断,目前国内在该项技术上的研究比较落后,目前主要表现在一维NMR技术的应用和推广上。本文在分析了基本流体NMR特性的基础上,结合国外公开有限的二维NMR技术资料,提出了二维NMR流体识别系统的概念设计方案。以此为基础,结合NMR基础理论,利用一定温度下已知蒸馏水的扩散系数,应用对多次测量离散数据进行线性回归的技术,对测算磁场梯度方法进行了系统研究,为方案的下一步做准备;利用纯烷烃流体来模拟油气层油气,结合一维NMR基础技术,对烷烃的扩散系数D和体驰豫时间T2之间的关系进行了初步的实验研究;在一维NMR反演技术基础上,结合L曲线准则,进行了二维NMR反演算法的研究;最后在上述研究基础上,开发了二维岩心流体识别分析系统,并对油水混合流体、饱和一定比例油水的岩心进行了识别实验,实验结果表明:目前该套系统能对含油水两相流体的岩心进行定性识别。研究证明:利用蒸馏水测算磁体梯度方法能在任意时刻和环境进行,提高了测算效率和精度:通过流体的NMR特性实验研究,得出在一定条件下烷烃流体D&T2的线性规律,并开发了配套的二维流体识别系统,并以上述技术为基础,形成了二维NMR流体识别系统的概念设计方案,为后者在该方向的研究提供一个基础。更多还原

【Abstract】 The high and new technology of the two-dimentional NMR liquid typing is dominated by the few international companys, and the research on this technology is behind the overseas,which are the applicaiton and popularization of one dimentional NMR technologyThis paper,which combines with few two dimentional NMR documents, presents the concept design solution of tow dimentional fluid typing on the base of the analysis of the NMR characteristic. and on base of this , this paper, which applys the linear regression on more cllecting datas, which duf f ise coeef f icient is known at the certain temperature, conbine with the base NMR fundaments , give the study on the method of caculating the Managtic gradient to prepare the next;We give the exprientment study on the relation of the diffuse coefficient D and relaxtion time T2 of the alkane by simulating oil and gas in reservoir with pure alkane,combining with the one dementional NMR technology;We also study on the two dimentional NMR reversion algorithm,based on the one dimentional NMR reversion algorithm,applying the L curve criterion;and base on above,we finally develope two dimentional core fluid typing analysis system,study on the oil-water mixed fluid and the core satuated with oil -water in certain propotion ,and result shows that the system can qualitatively type the fluid in core satuated with oil-water.The result shows we can impove the caculating efficiency and precision via the method of caculating magnatic gradient which can excute anytime and environment;we got the linear rule of the D&T2 in certain environment via the study on the fuid NMR characteristic,also accordingly develope two dimentional fluid typing system ; above of the technonoly ,we build up the concept design solution of two dimentional fluid typing system ,giving a fundation for the later researcher更多还原