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公开(公告)号：US11275022B2
公开(公告)日：2022-03-15
申请号：US16482588
申请日：2018-09-05
IPC分类号： G01N21/25 , E21B47/135 , E21B49/08
摘要： The present disclosure relates generally to a system and method for increasing the reliability and data-rate transmission of information from a downhole device to the surface and from the surface to the downhole device. A fluid sampling system may comprise a downhole tool positionable in a wellbore and comprising a fluid testing chamber. The downhole tool may also comprise a light spectrum analysis unit disposed at a surface of the wellbore, wherein the light spectrum analysis unit comprises a detector. The downhole tool may further comprise a fiber optic cable for carrying light from the downhole tool to the light spectrum analysis unit, wherein the fiber optic cable is connected to the downhole tool and the light spectrum analysis unit.
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公开(公告)号：US11048017B2
公开(公告)日：2021-06-29
申请号：US16326352
申请日：2016-08-26
IPC分类号： G01V8/16 , E21B47/07 , E21B47/017 , E21B47/135 , E21B49/00 , G01D5/353 , G02B6/42 , G01H9/00
摘要： In some embodiments, a method and apparatus, as well as an article, may operate to determine properties based on detected optical signals. An optical detection apparatus can include an optical detector for detecting light received through a fiber optic cable; a housing for enclosing the optical detector; a light source; and a cooling mechanism having the housing mounted thereto. The cooling mechanism can maintain the temperature of a light-sensitive region of the optical detector within a temperature range below 210 degrees Kelvin. Additional apparatus, systems, and methods are disclosed.
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公开(公告)号：US10738597B2
公开(公告)日：2020-08-11
申请号：US15565382
申请日：2015-05-20
摘要： The present disclosure relates to systems and methods for analyzing fluids. The method for analyzing a chemical sample within a wellbore, contained within an interrogation device, may comprise broadcasting a coherent light from a frequency comb module, directing the coherent light through a fiber optic line to the interrogation device, irradiating the chemical sample with the coherent light, capturing light resulting from the irradiation of the chemical sample, and producing a spectrum resulting from the captured light from the chemical sample. A frequency comb system for analyzing a chemical sample may comprise a frequency comb module configured to broadcast a coherent light and a fiber optic line that extends into a wellbore to an interrogation device. The interrogation device may further be configured to contain the chemical sample for irradiation by the coherent light. The frequency comb system may further comprise a receiver and an information handling system.
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公开(公告)号：US10408049B2
公开(公告)日：2019-09-10
申请号：US15304415
申请日：2015-12-03
摘要： Systems, methods, and computer-readable media for providing adaptive feedback in downhole telemetry in a wellbore. A feedback system includes a source assembly, which can be located on the surface or downhole, and a receiving assembly, which can likewise be located on the surface or downhole. The source assembly includes a source device that transmits a light signal having a first phase, and an encoder coupled to the source device. The receiving assembly comprising an oscillator that transmits an oscillator having a second phase, a coupler that couples the light signal with the oscillator signal, a detector and difference amplifier that detect and determine the difference between the first phase and second phase and a processor that receives the difference between the phases and provides the difference to an encoder so that the encoder can adjust the oscillator phase.
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公开(公告)号：US10241230B2
公开(公告)日：2019-03-26
申请号：US15329698
申请日：2015-06-26
摘要： A downhole sensing method includes modulating light to form a soliton that propagates through an optical fiber acting as a sensing element that measures a downhole parameter. The method further includes obtaining scattered light created as the soliton propagates through the optical fiber. The method further includes determining a value for a downhole parameter based on the scattered light, and displaying a representation of the value.
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公开(公告)号：US20170198568A1
公开(公告)日：2017-07-13
申请号：US15320675
申请日：2015-07-07
IPC分类号： E21B47/12
CPC分类号： E21B47/122 , E21B47/123
摘要： An example telemetry system for downhole operations in a subterranean formation comprises an electromagnetic (EM) radiation source and an EM radiation detector. A waveguide may be coupled to the EM radiation source and the EM radiation detector. A frequency multiplier may be coupled to the waveguide and positioned within a borehole in the subterranean formation.
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公开(公告)号：US11299983B2
公开(公告)日：2022-04-12
申请号：US16305537
申请日：2016-09-29
IPC分类号： E21B47/113 , G02B6/42 , G01V3/30 , G01N33/28
摘要： A method and system are disclosed that provide chemical composition data of a fluid. The system includes a first downhole electro-opto-mechanical device to transmit microwave radiation through the fluid. The microwave radiation is generated by the first downhole electro-opto-mechanical device in response to a first light signal. A second downhole electro-opto-mechanical device receives the microwave radiation and generates a second light signal in response to the received microwave radiation. A light detection device is coupled to the second downhole electro-opto-mechanical device to generate an electrical signal in response to the second light signal. The electrical signal is indicative of the chemical composition of the fluid.
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公开(公告)号：US20210222549A1
公开(公告)日：2021-07-22
申请号：US16305548
申请日：2016-08-26
IPC分类号： E21B47/135 , G01J1/02 , G01J1/42 , H01L39/10 , G01H9/00
摘要： In some embodiments, a method and apparatus, as well as an article, may operate to determine downhole properties based on detected optical signals. An optical detection apparatus can include an optical detector including a superconducting nanowire single photon detector (SNSPD) for detecting light received at an input section of fiber optic cable. The optical detection apparatus can further include a cryogenic cooler configured to maintain the temperature of a light-sensitive region of the SNSPD within a superconducting temperature range of the SNSPD. Downhole properties are measured based on detected optical signals received at the optical detection apparatus. Additional apparatus, systems, and methods are disclosed.
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公开(公告)号：US10934838B2
公开(公告)日：2021-03-02
申请号：US16302283
申请日：2016-08-26
IPC分类号： E21B47/135 , G01H9/00
摘要： In some embodiments, a method and apparatus, as well as an article, may operate to determine downhole properties based on detected optical signals. An optical detection system can include a fiber optic cable having a sensing location to generate a reflected measurement signal representative of measurement parameters. The optical detection system can further include a light source to transmit a measurement signal to cause the sensing location to provide the reflected measurement signal. The optical detection system can further include an optical detector comprising a single-photon detector (SPD) for detecting the reflected measurement signal received over the fiber optic cable. The optical detection system can further include a housing for enclosing the optical detector and to optically shield the optical detector, the housing including an aperture for passage of the fiber optic cable. Additional apparatuses, systems, and methods are disclosed.
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公开(公告)号：US10921481B2
公开(公告)日：2021-02-16
申请号：US16097336
申请日：2017-12-29
摘要： A system and method for making measurements inside a wellbore makes use of a diamond crystal with a nitrogen vacancy center (NV-center) to sense temperature, pressure, magnetic fields, strain, electric fields, or other parameters of the downhole environment. The system includes a microwave source that can be positioned to produce microwaves inside the wellbore and a light source that can be positioned to produce interrogation light inside the wellbore. The NV-center of the diamond is struck by the interrogation light. A spectrometer can be adapted to receive the excitation light output from the NV-center and produce a spectrum of the excitation light. The spectrum is indicative of the value of the parameter inside the wellbore.
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