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公开(公告)号：US20180328167A1
公开(公告)日：2018-11-15
申请号：US16033097
申请日：2018-07-11
CPC分类号： E21B47/0905 , E21B47/122 , G01V3/10 , G01V3/30
摘要： A system or apparatus for use in downhole communication or detection comprises a downhole arrangement defining a throughbore and primary and secondary elements. One of the primary and secondary elements is provided on the downhole arrangement and the other of the primary and secondary elements is provided in the throughbore. The primary and secondary elements are configurable for coupling of an electromagnetic field therebetween. The primary or secondary element which is provided in the throughbore may be provided on a tool such as a shifting tool which is deployable through the throughbore. The secondary element may be configured to provide the electromagnetic field coupled between the first and second elements with one or more characteristic features. The system may be configured for use, in particular though not exclusively, for communicating information to and/or from a downhole tool in an oil or gas well.
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公开(公告)号：US20180252092A1
公开(公告)日：2018-09-06
申请号：US15449241
申请日：2017-03-03
发明人： Yuri Alexeyevich Plotnikov , Cheng-Po Chen , Steven Klopman , Emad Andarawis Andarawis , Gregory Jay Myers
CPC分类号： E21B47/082 , E21B33/063 , E21B33/064 , E21B47/09 , E21B47/0905 , G01B7/12
摘要： A sensor system for a sub-sea oil and gas well includes a casing, a transmit coil, a receive coil, and a processor. The casing defines an interior space through which a drilling pipe string transits. The transmit coil is coupled to the casing and is configured to conduct a current pulse and induce an electromagnetic field within the interior space. The electromagnetic field corresponds with the current pulse and interacts with the drilling pipe string. The receive coil is coupled to the casing and is configured to detect the electromagnetic field, including perturbations of the electromagnetic field due to the drilling pipe string's interaction therewith. The processor is coupled to the transmit coil and the receive coil. The processor is configured to compute a diameter of the drilling pipe string based on the current pulse and the electromagnetic field detected by the receive coil.
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公开(公告)号：US20180230796A1
公开(公告)日：2018-08-16
申请号：US15515914
申请日：2015-11-06
发明人： Burkay DONDERICI , Ahmed E. FOUDA
CPC分类号： E21B47/0905 , E21B34/06 , E21B47/09 , E21B2034/007 , G01V3/28
摘要： The operational position of a moveable device is detected using an electromagnetic induction logging tool. The logging tool generates a baseline log of the moveable device in a non-actuated position, and a response log of the moveable device in an actuated position. The baseline and response logs are then compared in order to determine the operational position of the moveable device.
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4.发明申请公开(公告)号：US20180223654A1
公开(公告)日：2018-08-09
申请号：US15501354
申请日：2015-11-12
发明人： Mark Roberson , Charles Bartee , Scott Goodwin
CPC分类号： E21B47/16 , E21B47/0005 , E21B47/01 , E21B47/0905 , G01V3/20 , G01V3/26
摘要： Systems and methods using multi-electrode configurations for characterizing fluids in subterranean formations during various treatment operations are provided. In certain embodiments, the methods comprise: placing a tubular base structure having a multi-electrode configuration disposed thereon in at least a portion of a well bore penetrating at least a portion of a subterranean formation, the multi-electrode configuration comprising at least first and second electrodes with a dielectric layer between the tubular base structure and the electrodes; collecting electromagnetic measurements using the multi-electrode configuration; and processing the electromagnetic measurements to obtain a characterization of at least one fluid in an annulus between the tubular base structure and an inner wall of the well bore. The first and second electrodes of the multi-electrode configuration may be oriented along non-parallel planes and/or positioned at different heights from an outer surface of the tubular base structure.
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5.发明申请公开(公告)号：US20180209928A1
公开(公告)日：2018-07-26
申请号：US15927779
申请日：2018-03-21
发明人： Qiongwei LI , Bihai CHENG , Zewei TANG , Jianqiang XUE , Caili FU , Huili YANG , Zhiwu HE , Lihua YANG , Xinzhu ZHANG , Yulai SUN
CPC分类号： G01N27/205 , E21B17/1078 , E21B47/0006 , E21B47/0905 , G01N27/041
摘要： This disclosure provides a method and device for detecting the damage rate of an inner coating of a downhole oil casing. The method includes filling the oil casing with electrolyte, obtaining the well depth-detection current on a discharge electrode in a process of moving the discharge electrode from one end of the oil casing to the other end of the oil casing, and determining a well depth-damage rate state of the inner coating of the oil casing according to the well depth-detection current. This application can realize quantitative judgment for the damage rate of an inner coating of a downhole oil casing, resulting in rapid in detection speed, convenient and safe in operation, and low detection cost.
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6.发明申请公开(公告)号：US20180179885A1
公开(公告)日：2018-06-28
申请号：US15846261
申请日：2017-12-19
CPC分类号： E21B47/0905 , E21B47/0006 , G01N29/00
摘要： A crack detecting system operable to detect cracks along a conduit or structure includes a tool movable along a conduit or structure and having at least one sensing device for sensing cracks in a wall of the conduit or structure, and a processor operable to process an output of the at least one sensing device. Responsive to processing of the output by the processor, the processor is operable to determine cracks at the wall of the conduit or structure. The at least one sensing device employs excitation in the form of a high current continuous or pulse wave that is applied to a magneto-mechanical impedance transducer/sensor coil to generate a mechanical wave in the conduit or structure.
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公开(公告)号：US20180156000A1
公开(公告)日：2018-06-07
申请号：US15888861
申请日：2018-02-05
发明人： Peter Kris Cleven
IPC分类号： E21B23/02
CPC分类号： E21B23/02 , E21B17/105 , E21B17/1057 , E21B47/0905
摘要： A system (100) for positioning a working tool (21) in a wellbore (1). The positioning system (100) comprises a casing element (110) with a marker (111, 112, 113) provided on an inner surface, the marker (111, 112, 113) having a distinct diameter different from the inner diameter of the casing element (110). The system further comprises a positioning tool (120) with a latching element (121, 122) adapted to form a latch (115) with the marker (111, 112, 113), and a force detector (130) adapted to detect an axial latching force (FL) applied to a tubing string (20) from the latch (115) when the casing element (110) is located within the wellbore (1) and the force detector (130) is located at a surface (2) outside the wellbore (1).
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公开(公告)号：US09976411B2
公开(公告)日：2018-05-22
申请号：US15518144
申请日：2015-10-28
发明人： Michael Scott
CPC分类号： E21B47/0905 , E21B34/06 , E21B47/06 , E21B47/065 , E21B47/09 , E21B2034/007 , G01R33/0005
摘要： A magnetic sensor array is presented for a well apparatus for determining the position of at least one movable component with respect to a fixed component of a downhole tool. The array comprises at least one conductor member having a plurality of contact regions spaced apart at first intervals of at least a first length along a longitudinal axis of said at least one conductor member and a plurality of magnetic sensors, each one of which is operably coupled to one of said plurality of contact regions and actuatable by a magnetic field from a magnetic actuator.
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公开(公告)号：US09864095B2
公开(公告)日：2018-01-09
申请号：US15111922
申请日：2015-06-17
CPC分类号： G01V8/16 , E21B47/0905 , E21B47/102 , E21B47/123 , G01D5/3539 , G01L1/247 , G01V8/02
摘要： Multiplexed microvolt sensor systems and methods are described. An example system may include a pulsed light source, a first optical waveguide segment operatively coupled to the pulsed light source, an optical circulator including a first port, a second port, and a third port, the first port being operatively coupled to the first optical waveguide segment, a second optical waveguide segment operatively coupled to the second port of the optical circulator, and an array of sensor elements. Each of the sensor elements may include a detector and an electro-optical modulator, the electro-optical modulator being operatively coupled to the second optical waveguide segment. The example system may further include a third optical waveguide segment operatively coupled to the third port of the optical circulator, a compensating interferometer operatively coupled to the third optical waveguide segment, and a time division multiplexed demodulator operatively coupled to the compensating interferometer and the pulsed light source.
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公开(公告)号：US09798032B2
公开(公告)日：2017-10-24
申请号：US15350639
申请日：2016-11-14
发明人： Guenter W. Brune , Albert W. Chau , John E. Mercer
CPC分类号： G01V3/081 , E21B47/0905 , G01V3/15 , G01V3/30 , G01V3/38
摘要： An arrangement and an associated method are described in which a boring tool is moved through the ground within a given region along a path in which region a cable is buried. The boring tool and the cable transmit a boring tool locating signal and a cable locating signal, respectively. Intensities of the boring tool locating signal and the cable locating signal are measured along with a pitch orientation of the boring tool. Using the measured intensities and established pitch orientation, a positional relationship is determined to relative scale including at least the boring tool and the cable in the region. The positional relationship is displayed to scale in one view. The positional relationship may be determined and displayed including the forward locate point in scaled relation to the boring tool and the cable. Cable depth determination techniques are described including a two-point ground depth determination method.
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