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公开(公告)号：US10802099B2
公开(公告)日：2020-10-13
申请号：US15943787
申请日：2018-04-03
Applicant: Schlumberger Technology Corporation
Inventor： Lalitha Venkataramanan , Fred K. Gruber , Tarek M. Habashy , Ridvan Akkurt , Badarinadh Vissapragada , Richard E. Lewis , Erik Rylander
Abstract: A methods are provided for investigating a sample containing hydrocarbons by subjecting the sample to a nuclear magnetic resonance (NMR) sequence using NMR equipment, using the NMR equipment to detect signals from the sample in response to the NMR sequence, analyzing the signals to extract a distribution of relaxation times (or diffusions), and computing a value for a parameter of the sample as a function of at least one of the relaxation times (or diffusions), wherein the computing utilizes a correction factor that modifies the value for the parameter as a function of relaxation time for at least short relaxation times (or as a function of diffusion for at least large diffusion coefficients).
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公开(公告)号：US10466186B2
公开(公告)日：2019-11-05
申请号：US15113950
申请日：2015-01-21
Applicant: Schlumberger Technology Corporation
Inventor： Ravinath Kausik Kadayam Viswanathan , Kamilla Fellah , Erik Rylander , Philip M. Singer , Richard E. Lewis
Abstract: A method for testing an unconventional core sample is provided. The method involves loading the unconventional core sample into a sample holder and introducing fluid into the sample holder at an elevated pressure such that fluid is injected into the internal pore space of the unconventional core sample in order to resaturate the unconventional core sample with the fluid, wherein the fluid is selected from the group including a hydrocarbon fluid and a water-based formation fluid. An apparatus and a system used in combination with the method are also provided.
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13.发明授权公开(公告)号：US10401313B2
公开(公告)日：2019-09-03
申请号：US15604029
申请日：2017-05-24
Applicant: Schlumberger Technology Corporation
Inventor： Vivek Anand , Ravinath Kausik Kadayam Viswanathan , Tianmin Jiang , Erik Rylander , Mansoor Ali , Richard E. Lewis
Abstract: Downhole fluid volumes of a geological formation may be estimated using nuclear magnetic resonance (NMR) measurements, even in organic shale reservoirs. Multi-dimensional NMR measurements, such as two-dimensional NMR measurements and/or, in some cases, one or more well-logging measurements relating to total organic carbon may be used to estimate downhole fluid volumes of hydrocarbons such as bitumen, light hydrocarbon, kerogen, and/or water. Having identified the fluid volumes in this manner or any other suitable manner from the NMR measurements, a reservoir producibility index (RPI) may be generated. The downhole fluid volumes and/or the RPI may be output on a well log to enable an operator to make operational and strategic decisions for well production.
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14.发明申请公开(公告)号：US20170343497A1
公开(公告)日：2017-11-30
申请号：US15604029
申请日：2017-05-24
Applicant: Schlumberger Technology Corporation
Inventor： Vivek Anand , Ravinath Kausik Kadayam Viswanathan , Tianmin Jiang , Erik Rylander , Mansoor Ali , Richard E. Lewis
CPC classification number: G01N24/082 , G01N24/081 , G01R33/448 , G01V3/32 , Y02A90/344
Abstract: Downhole fluid volumes of a geological formation may be estimated using nuclear magnetic resonance (NMR) measurements, even in organic shale reservoirs. Multi-dimensional NMR measurements, such as two-dimensional NMR measurements and/or, in some cases, one or more well-logging measurements relating to total organic carbon may be used to estimate downhole fluid volumes of hydrocarbons such as bitumen, light hydrocarbon, kerogen, and/or water. Having identified the fluid volumes in this manner or any other suitable manner from the NMR measurements, a reservoir producibility index (RPI) may be generated. The downhole fluid volumes and/or the RPI may be output on a well log to enable an operator to make operational and strategic decisions for well production.
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