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公开(公告)号：US09176081B2
公开(公告)日：2015-11-03
申请号：US13097404
申请日：2011-04-29
申请人： Pabitra N. Sen , Gabriela Leu , Nicholas Drenzek , Thomas J. Neville , Yi-Qiao Song , Ravinath Kausik Kadayam Viswanathan
发明人： Pabitra N. Sen , Gabriela Leu , Nicholas Drenzek , Thomas J. Neville , Yi-Qiao Song , Ravinath Kausik Kadayam Viswanathan
CPC分类号： G01N24/081
摘要： Systems and methods for magic angle spinning nuclear magnetic resonance analysis of samples from unconventional reservoirs are described. Fast and inexpensive methods are described that can provide reliable information on TOC content, type, and maturity (via the relative abundances of different hydrocarbons, for example) without the need for more extensive sample preparation or destruction. If care is taken during sample recovery and storage, NMR can also yield an estimate of gas-in-place, including detailed typing (e.g. methane vs. ethane). The described MAS NMR analysis is used to determine various properties of unconventional reservoirs, including gas and oil shales, which are useful in evaluating their worth and producibility.
摘要翻译： 描述了来自非常规储层的样品的魔角旋转核磁共振分析的系统和方法。 描述了可以提供关于TOC含量，类型和成熟度的可靠信息（通过例如不同碳氢化合物的相对丰度）而不需要更广泛的样品制备或破坏的快速和便宜的方法。 如果在样品回收和储存过程中要小心，NMR也可以产生现场气体的估计，包括详细分类（如甲烷对乙烷）。 描述的MAS NMR分析用于确定非常规储层的各种性质，包括气体和油页岩，可用于评估其价值和可生产性。
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公开(公告)号：US20150219782A1
公开(公告)日：2015-08-06
申请号：US14119708
申请日：2012-08-09
申请人： Ravinath Kausik Kadayam Viswanathan , Chanh Cao Minh , Ridvan Akkurt , Baarinadh Vissapragada , Yi-Qiao Song , Lukasz Zielinski
发明人： Ravinath Kausik Kadayam Viswanathan , Chanh Cao Minh , Ridvan Akkurt , Baarinadh Vissapragada , Yi-Qiao Song , Lukasz Zielinski
CPC分类号： G01V3/14 , G01N24/081 , G01R33/448 , G01R33/56341 , G01V3/32 , G01V3/38
摘要： Apparatus and methods for characterizing hydrocarbons in a subterranean formation including sending and measuring NMR signals; analyzing the signals to form a distribution; and estimating a property of a formation from the distribution, wherein the sending comprises pulse sequences configured for a formation pore size, and wherein the computing comprises porosity. Apparatus and methods for characterizing hydrocarbons in a subterranean formation including sending and measuring NMR signals; analyzing the signals to form a distribution; and estimating a property of a formation from the distribution, wherein the formation comprises a distribution of pore sizes of about 10 nm or more, and wherein the computing comprises natural gas composition.
摘要翻译： 用于表征地下地层中的烃的装置和方法，包括发送和测量NMR信号; 分析信号以形成分布; 以及从所述分布估计地层的属性，其中所述发送包括被配置用于地层孔径的脉冲序列，并且其中所述计算包括多孔性。 用于表征地下地层中的烃的装置和方法，包括发送和测量NMR信号; 分析信号以形成分布; 以及从所述分布估计地层的性质，其中所述地层包括约10nm或更大的孔径分布，并且其中所述计算包括天然气组成。
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公开(公告)号：US20120273193A1
公开(公告)日：2012-11-01
申请号：US13097404
申请日：2011-04-29
申请人： Pabitra N. Sen , Gabriela Leu , Nicholas Drenzek , Thomas J. Neville , Yi-Qiao Song , Ravinath Kausik Kadayam Viswanathan
发明人： Pabitra N. Sen , Gabriela Leu , Nicholas Drenzek , Thomas J. Neville , Yi-Qiao Song , Ravinath Kausik Kadayam Viswanathan
CPC分类号： G01N24/081
摘要： Systems and methods for magic angle spinning nuclear magnetic resonance analysis of samples from unconventional reservoirs are described. Fast and inexpensive methods are described that can provide reliable information on TOC content, type, and maturity (via the relative abundances of different hydrocarbons, for example) without the need for more extensive sample preparation or destruction. If care is taken during sample recovery and storage, NMR can also yield an estimate of gas-in-place, including detailed typing (e.g. methane vs. ethane). The described MAS NMR analysis is used to determine various properties of unconventional reservoirs, including gas and oil shales, which are useful in evaluating their worth and producibility.
摘要翻译： 描述了来自非常规储层的样品的魔角旋转核磁共振分析的系统和方法。 描述了可以提供关于TOC含量，类型和成熟度的可靠信息（通过例如不同碳氢化合物的相对丰度）而不需要更广泛的样品制备或破坏的快速和便宜的方法。 如果在样品回收和储存过程中要小心，NMR也可以产生现场气体的估计，包括详细分类（如甲烷对乙烷）。 描述的MAS NMR分析用于确定非常规储层的各种性质，包括气体和油页岩，可用于评估其价值和可生产性。
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公开(公告)号：US09720124B2
公开(公告)日：2017-08-01
申请号：US14119708
申请日：2012-08-09
申请人： Ravinath Kausik Kadayam Viswanathan , Chanh Cao Minh , Ridvan Akkurt , Baarinadh Vissapragada , Yi-Qiao Song , Lukasz Zielinski
发明人： Ravinath Kausik Kadayam Viswanathan , Chanh Cao Minh , Ridvan Akkurt , Baarinadh Vissapragada , Yi-Qiao Song , Lukasz Zielinski
CPC分类号： G01V3/14 , G01N24/081 , G01R33/448 , G01R33/56341 , G01V3/32 , G01V3/38
摘要： Apparatus and methods for characterizing hydrocarbons in a subterranean formation include obtaining a sample of the subterranean formation; measuring, uphole, the porosity of the sample; using a nuclear magnetic resonance (NMR) tool downhole in the borehole, sending NMR pulse sequences configured for formation pore size and measuring NMR signals that characterize the formation at a location in the formation; analyzing the signals to find a gas porosity of the formation at the location; and determining a hydrogen index (HIg) of the subterranean formation from the gas porosity and from the porosity of the sample. The obtained HIg may then be used in conjunction with downhole NMR measurements to find corrected gas porosities at locations of the formation.
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