发明名称 |
Modified pulse sequence to estimate properties |
摘要 |
Methods and related systems are described for estimating fluid or rock properties from NMR measurements. A modified pulse sequence is provided that can directly provide moments of relaxation-time or diffusion distributions. This pulse sequence can be adapted to the desired moment of relaxation-time or diffusion coefficient. The data from this pulse sequence provides direct estimates of fluid properties such as average chain length and viscosity of a hydrocarbon. In comparison to the uniformly-spaced pulse sequence, these pulse sequences are faster and have a lower error bar in computing the fluid properties. |
申请公布号 |
GB2486380(B) |
申请公布日期 |
2015.12.30 |
申请号 |
GB20120005890 |
申请日期 |
2011.02.24 |
申请人 |
SCHLUMBERGER HOLDINGS LIMITED |
发明人 |
LALITHA VENKATARAMANAN;TAREK M HABASHY;DENISE E FREED;ASHOK BELANI |
分类号 |
G01V3/32;G01V3/14 |
主分类号 |
G01V3/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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