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

IPC分类号： G01V3/14 ,  G01V3/32 ,  G01V3/38 ,  G01N24/08 ,  G01R33/44 ,  G01R33/563

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.

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

IPC分类号： G01V3/14 ,  G01V3/38

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。