Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 14. Отображено 14.
11-10-2016 дата публикации

Methods for determining dielectric permittivity spectrum of underground rock formations

Номер: US0009465131B2
Автор: Barbara Anderson, Thomas D. Barber, Emmanuel Legendre, Martin G. Luling, Pabitra Sen, Reza Taherian, ANDERSON BARBARA, BARBER THOMAS D, LEGENDRE EMMANUEL, LULING MARTIN G, SEN PABITRA, TAHERIAN REZA, Anderson Barbara, Barber Thomas D., Legendre Emmanuel, Luling Martin G., Sen Pabitra, Taherian Reza
Принадлежит: SCHLUMBERGER TECHNOLOGY CORPORATION, SCHLUMBERGER TECHNOLOGY CORP, Schlumberger Technology Corporation

Techniques involve determining the frequency-dependent dielectric permittivity spectrum of a rock sample. Determining the frequency-dependent dielectric permittivity may involve defining a series of electromagnetic measurement data having at least a measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity ∈ ∞ can be obtained. The electromagnetic measurement data also includes measurements at different frequencies from which values for frequency-dependent dielectric permittivity ∈ rock (f) can be obtained. Using these measurements, the frequency-dependent spectrum of the sample may be determined.

Подробнее
Номер записи: 1
01-11-2012 дата публикации

NMR ANALYSIS OF UNCONVENTIONAL RESERVOIR ROCK SAMPLES

Номер: US20120273193A1
Автор: Drenzek Nicholas, Leu Gabriela, Neville Thomas J., Sen Pabitra N., Song Yi-Qiao, Viswanathan Ravinath Kausik Kadayam
Принадлежит: SCHLUMBERGER TECHNOLOGY CORPORATION

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. 1. A method of analyzing rock samples from a subterranean hydrocarbon reservoir comprising:performing magic angle spinning nuclear magnetic resonance spectroscopy on a sample of rock from an unconventional hydrocarbon reservoir; anddetermining one or more characteristics associated with the sample based at least in part on the spectroscopy.2. A method according to wherein the sample of rock from the unconventional hydrocarbon reservoir has unconventional microstructural characteristics.3. A method according wherein the unconventional microstructural characteristic is pore sizes of less than about 1 micron.4. A method according to wherein the sample of rock from the unconventional hydrocarbon reservoir includes significant amounts of kerogen.5. A method according to wherein the unconventional hydrocarbon reservoir includes hydrocarbon-bearing shales.6. A method according to wherein the unconventional hydrocarbon reservoir includes gas shales.7. A method according to wherein the unconventional hydrocarbon reservoir includes oily shales.8. A method according to wherein the one or more characteristics includes geochemical characteristics.9. A method according to wherein the one or more characteristics includes microstructural characteristics. ...

Подробнее
Номер записи: 2
06-02-2014 дата публикации

NUCLEUR MAGNETIC RESONANCE SYSTEM WITH FEEDBACK INDUCTION COILS

Номер: US20140035578A1
Автор: Sen Pabitra, Song Yiqiao, WILT MICHAEL
Принадлежит: SCHLUMBERGER TECHNOLOGY CORPORATION

A nuclear magnetic resonance (NMR) system that uses a feedback induction coil to detect NMR signals generated within a substance is described herein. In one embodiment, the NMR system uses the Earth's magnetic field in conjunction with a transmitter coil that applies NMR sequences to a formation. The NMR sequences generate a weak NMR signal within the formation due to the weakness of the Earth's magnetic field. This weak NMR signal is detected using the feedback induction coil. 1. A nuclear magnetic resonance (NMR) system , the system comprising:a feedback induction coil configured to detect NMR signals generated within substance.2. The system of claim 1 , further comprising:a transmitter coil configured to apply a NMR pulse sequence to the substance.3. The system of claim 2 , further comprising:a wellbore tool comprising the feedback induction coil and the transmitter coil.4. The system of claim 3 , wherein the wellbore tool is a wireline tool.5. The system of claim 2 , further comprising:a wellbore tool comprising the feedback induction coil; anda surface module comprising the transmitter coil.6. The NMR system of claim 2 , further comprising:a surface module comprising the feedback induction coil and the transmitter coil.7. The system of claim 1 , wherein the feedback induction coil includes a primary coil and a feedback coil.8. The system of claim 7 , wherein the primary coil has at least 1000 turns.9. The system of claim 1 , wherein the feedback induction coil includes a core that has a permeability of at least 1000.10. The system of claim 1 , wherein the feedback induction coil has a cross-sectional area no greater than 400 cm.11. The system of claim 1 , wherein the feedback induction coil is configured to apply an NMR sequence to the substance.12. A method for analyzing a substance using nuclear magnetic resonance (NMR) claim 1 , the method comprising:applying an NMR pulse sequence to the substance;detecting NMR signals generated by the NMR pulse sequence ...

Подробнее
Номер записи: 3
22-01-2015 дата публикации

Methods for Determining Dielectric Permittivity Spectrum of Underground Rock Formations

Номер: US20150025807A1
Автор: Anderson Barbara, Barber Thomas D., Legendre Emmanuel, Luling Martin G., Sen Pabitra, Taherian Reza
Принадлежит:

Techniques involve determining the frequency-dependent dielectric permittivity spectrum of a rock sample. Determining the frequency-dependent dielectric permittivity may involve defining a series of electromagnetic measurement data having at least a measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity εcan be obtained. The electromagnetic measurement data also includes measurements at different frequencies from which values for frequency-dependent dielectric permittivity ε(f) can be obtained. Using these measurements, the frequency-dependent spectrum of the sample may be determined. 1. A method for determining the frequency-dependent dielectric permittivity spectrum of a rock sample , comprising:{'sub': ∞', 'rock, 'sup': 8', '7, 'defining a series of electromagnetic measurement data comprising at least a first measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity εcan be obtained; and at least second and third measurements at different frequencies from which values for frequency-dependent dielectric permittivity ε(f) can be obtained, wherein the first measurement is made at a frequency of 10Hz or above, and the second and third measurements are made at frequencies of 10Hz or below; and'}using the first, second and third measurements to determine the frequency-dependent spectrum of the sample.2. A method as claimed in claim 1 , wherein the frequency-dependent part of the spectrum obeys the relationship ε(f)=ε(f)+εwherein ε(f) defines the frequency-dependent part of a measured value of dielectric permittivity claim 1 , the method further comprising:{'sub': 'dc', 'determining the dc permittivity ε;'}{'sub': 0', '1', '0', 'dc', '0', 'c, 'determining the characteristic frequency f, the lowest frequency for which the relationship log(ε(f))=−βlog(1+f/f)+log(ε) holds substantially true; and determining the slope of the frequency dependent part of the spectrum ...

Подробнее
Номер записи: 4
12-04-2018 дата публикации

Proppant Additives for Hydraulic Fracturing

Номер: US20180100389A1
Автор: "OCallaghan Michele", Ahmadian-Tehrani Mohsen, Kleinhammes Alfred, Sen Pabitra N., Wu Yue
Принадлежит:

Hydraulic fracturing of a geological formation is performed by injection of a proppant mixture into the geological formation to form fractures in the geological formation. The proppant mixture includes at least a liquid, proppant, and proppant additive particles. The hydraulic fracturing results in a presence of the proppant additive particles within the formed fractures, wherein the proppant additive particles are configured with a first complex conductivity that is measurably different than a second complex conductivity exhibited by materials comprising the geological formation. The formed fractures can then be imaged and mapped in the geological formation with electromagnetic energy at one or more frequencies in a manner so that the proppant additive particles function as a contrast agent due to the first complex conductivity of the proppant additive particles being measurably different from the second complex conductivity. The complex conductivity includes a real conductivity and an imaginary conductivity. 1. A method comprising:performing a hydraulic fracturing of a geological formation by injection of a proppant mixture into the geological formation to form fractures in the geological formation, wherein the proppant mixture comprises a liquid, proppant, and proppant additive particles, wherein the hydraulic fracturing results in a presence of the proppant additive particles within the formed fractures, wherein the proppant additive particles are configured with a first complex conductivity that is measurably different than a second complex conductivity exhibited by materials comprising the geological formation; andimaging the fractures formed in the geological formation with electromagnetic energy at one or more frequencies in a manner so that the proppant additive particles function as a contrast agent due to the first complex conductivity of the proppant additive particles being measurably different from the second complex conductivity.2. The method as ...

Подробнее
Номер записи: 5
18-06-2015 дата публикации

DIELECTRIC CONTRAST AGENTS AND METHODS

Номер: US20150167459A1
Автор: Ahmadian-Tehrani Mohsen, Kleinhammes Alfred, Sen Pabitra, Wu Yue
Принадлежит:

Contrast agents and methods for use in geological applications are provided. Contrast agents can be a nanopolymorph material, such as titania nanotubes, and have a low-frequency dielectric permittivity. Methods of identifying one or more subterranean features during geological exploration are provided. Methods of identifying a ganglion of bypassed oil are provided. Methods of illuminating subterranean fractures in hydraulic fracturing are provided. 1. A method of identifying a subterranean feature , comprising:administering a contrast agent into a geological site, wherein the contrast agent comprises a nanopolymorph material having a low-frequency dielectric permittivity;allowing the contrast agent to migrate to a subterranean feature in the geological site; andilluminating the subterranean feature using an electromagnetic tool suitable for sensing a presence of the contrast agent that has migrated to the subterranean feature.2. The method of claim 1 , wherein the nanopolymorph material is selected from the group consisting of a nanotube claim 1 , a nanosheet claim 1 , and a nanoparticle.3. The method of claim 1 , wherein the nanopolymorph material is a titania nanotube.4. The method of claim 1 , wherein a dielectric permittivity of the contrast agent is greater than about 5 claim 1 ,000 (F/m).5. The method of claim 1 , further comprising a membrane encapsulating the contrast agent.6. The method of claim 5 , wherein the membrane is configured to become permeable upon encountering a stimulus selected from the group consisting of pH claim 5 , temperature claim 5 , pressure claim 5 , salinity claim 5 , and combinations thereof.7. The method of claim 5 , wherein the membrane is configured to become permeable after a predetermined period of time has elapsed.8. The method of claim 1 , wherein the contrast agent is stable at a temperature up to about 350° C. and a pH ranging from about 1 to about 12.9. The method of claim 1 , further comprising mixing the contrast agent ...

Подробнее
Номер записи: 6
09-11-2017 дата публикации

NUCLEUR MAGNETIC RESONANCE SYSTEM WITH FEEDBACK INDUCTION COILS

Номер: US20170322338A1
Автор: Sen Pabitra, Song Yi-Qiao, WILT MICHAEL
Принадлежит:

A nuclear magnetic resonance (NMR) system that uses a feedback induction coil to detect NMR signals generated within a substance is described herein. In one embodiment, the NMR system uses the Earth's magnetic field in conjunction with a transmitter coil that applies NMR sequences to a formation. The NMR sequences generate a weak NMR signal within the formation due to the weakness of the Earth's magnetic field. This weak NMR signal is detected using the feedback induction coil. 1. A nuclear magnetic resonance (NMR) system , the system comprising:a feedback induction coil configured to detect NMR signals generated within a substance.2. The system of claim 1 , further comprising:a transmitter coil configured to apply a NMR pulse sequence to the substance.3. The system of claim 2 , further comprising:a wellbore tool comprising the feedback induction coil and the transmitter coil.4. The system of claim 3 , wherein the wellbore tool is a wireline tool.5. The system of claim 2 , further comprising:a wellbore tool comprising the feedback induction coil; anda surface module comprising the transmitter coil.6. The NMR system of claim 2 , further comprising:a surface module comprising the feedback induction coil and the transmitter coil.7. The system of claim 1 , wherein the feedback induction coil includes a primary coil and a feedback coil.8. The system of claim 7 , wherein the primary coil has at least 1000 turns.9. The system of claim 1 , wherein the feedback induction coil includes a core that has a permeability of at least 1000.10. The system of claim 1 , wherein the feedback induction coil has a cross-sectional area no greater than 400 cm.11. The system of claim 1 , wherein the feedback induction coil is configured to apply an NMR sequence to the substance.12. A method for analyzing a substance using nuclear magnetic resonance (NMR) claim 1 , the method comprising:applying an NMR pulse sequence to the substance;detecting NMR signals generated by the NMR pulse sequence ...

Подробнее
Номер записи: 7
19-11-2009 дата публикации

Continuous fibers for use in well completion, intervention, and other subterranean applications

Номер: WO2009140591A2
Автор: Guillemette Picard, Karen Wiemer, Martin E. Poitzsch, Muthusamy Vembusubramanian, Pabitra N. Sen
Принадлежит: Prad Research and Development Ltd, Schlumberger Canada Limited, Schlumberger Holdings Limited, Schlumberger Technology B.V., Services Petroliers Schlumberger

Methods and related systems are described for use with continuous fiber based system for use with well bore completions comprising: a plurality of continuous fibers deployable into a portion of a well bore completion; a fiber management module adapted and positioned within the borehole to facilitate deployment of and communication with the plurality of continuous fibers; wherein the number of deployable continuous fibers provides sufficient redundancy to make at least a target measurement relating to the completion.

Подробнее
Номер записи: 8
11-11-2014 дата публикации

Methods for determining dielectric permittivity spectrum of underground rock formations

Номер: US8884623B2
Автор: Barbara Anderson, Emmanuel Legendre, Martin G. Luling, Pabitra N. Sen, Reza Taherian, Thomas D. Barber
Принадлежит: Schlumberger Technology Corp

A method for determining the frequency-dependent dielectric permittivity spectrum of a rock sample, comprising:—defining a series of electromagnetic measurement data comprising at least a first measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity ∈ ∞ , can be obtained; and at least second and third measurements at different frequencies from which values for frequency-dependent dielectric permittivity ∈ rock (f) can be obtained; and—using the first, second and third measurements to determine the frequency-dependent spectrum of the sample.

Подробнее
Номер записи: 9
02-03-2011 дата публикации

Continuous fibers for use in well completion, intervention, and other subterranean applications

Номер: EP2288788A2
Автор: Guillemette Picard, Karen Wiemer, Martin E. Poitzsch, Muthusamy Vembusubramanian, Pabitra N. Sen
Принадлежит: Gemalto Terminals Ltd, Prad Research and Development Ltd, Schlumberger Holdings Ltd, Schlumberger Technology Bv, Services Petroliers Schlumberger SA

Methods and related systems are described for use with continuous fiber based system for use with well bore completions comprising: a plurality of continuous fibers deployable into a portion of a well bore completion; a fiber management module adapted and positioned within the borehole to facilitate deployment of and communication with the plurality of continuous fibers; wherein the number of deployable continuous fibers provides sufficient redundancy to make at least a target measurement relating to the completion.

Подробнее
Номер записи: 10
18-05-1988 дата публикации

Method and apparatus for obtaining properties of subsurface formations

Номер: EP0159944A3
Автор: Jayanth R. Banavar, Pabitra N. Sen, Paul L. Baker, William E. Kenyon
Принадлежит: Schlumberger NV Ltd, Societe de Prospection Electrique Schlumberger SA

Well logging techniques are disclosed which use and/or measure formation textural parameters. A disclosed formation textural model is bimodal in nature, and includes fractions of spherical grains and of platey grains having a single aspect ration. This model is used in obtaining improved well logging recordings.

Подробнее
Номер записи: 11
06-10-2010 дата публикации

Methods for determining dielectric permittivity spectrum of underground rock formations

Номер: EP2237075A1
Автор: Barbara Anderson, Emmanuel Legendre, Martin Luling, Pabitra Sen, Reza Taherian, Thomas Barber
Принадлежит: Gemalto Terminals Ltd, Prad Research and Development Ltd, Schlumberger Holdings Ltd, Schlumberger Technology Bv, Services Petroliers Schlumberger SA

A method for determining the frequency-dependent dielectric permittivity spectrum of a rock sample, comprising: - defining a series of electromagnetic measurement data comprising at least a first measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity µ ˆž can be obtained; and at least second and third measurements at different frequencies from which values for frequency-dependent dielectric permittivity µ rock ( f ) can be obtained; and - using the first, second and third measurements to determine the frequency-dependent spectrum of the sample.

Подробнее
Номер записи: 12
19-11-2009 дата публикации

Continuous fibers for use in hydraulic fracturing applications

Номер: WO2009140593A2
Автор: Guillemette Picard, Karen Wiemer, Martin E. Poitzsch, Muthusamy Vembusubramanian, Pabitra N. Sen
Принадлежит: Prad Research and Development Ltd, Schlumberger Canada Limited, Schlumberger Holdings Limited, Schlumberger Technology B.V., Services Petroliers Schlumberger

Methods and related systems are described for use with hydraulic fracturing and other oilfield applications. A tool body is positioned in a wellbore at a location near a subterranean rock formation being fractured. The tool body contains a plurality of deployable continuous fibers. At least some of the deployable continuous fibers are deployed into fractures within a subterranean rock formation. Each deployed fiber is continuous from the tool body to the rock formation. The number of deployable continuous fibers provides sufficient redundancy to make at least a target measurement relating to the fracturing process.

Подробнее
Номер записи: 13
25-07-2017 дата публикации

Nucleur magnetic resonance system with feedback induction coils

Номер: US09715032B2
Автор: Michael Wilt, Pabitra Sen, Yiqiao Song
Принадлежит: Schlumberger Technology Corp

A nuclear magnetic resonance (NMR) system that uses a feedback induction coil to detect NMR signals generated within a substance is described herein. In one embodiment, the NMR system uses the Earth's magnetic field in conjunction with a transmitter coil that applies NMR sequences to a formation. The NMR sequences generate a weak NMR signal within the formation due to the weakness of the Earth's magnetic field. This weak NMR signal is detected using the feedback induction coil.

Подробнее
Номер записи: 14