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公开(公告)号：WO2023075897A1
公开(公告)日：2023-05-04
申请号：PCT/US2022/040892
申请日：2022-08-19
发明人： CHOWDHURY, Subhadeep , TARGAC, Gary
IPC分类号： E21B43/26 , E21B43/119 , E21B49/08 , E21B49/00 , E21B47/10
摘要： Method of monitoring produced water at each perforation or entry point by real time ion sensor deployed downhole to measure the content of water soluble ions. Methods of determining and differentiating nature of water breakthrough in oil production; such as between cycled injection water through a void space conduit, matrix swept injection water and formation water, especially as relates to offshore oil production. Real time ion sensors are deployed and when compared with known standards are used to monitor and remediate water breakthrough, prevent scale deposition, and the like.
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公开(公告)号：WO2023033811A1
公开(公告)日：2023-03-09
申请号：PCT/US2021/048493
申请日：2021-08-31
发明人： CHEN, Songhua , SHAO, Wei
摘要： Methods for correcting a gradient distribution in downhole NMR logging are described herein. NMR data is inverted using an effective gradient to obtain an apparent T2 distribution having a first main peak and a distortion caused by a second spurious peak. The first main peak corresponds to the effective gradient. The distortion in the apparent T2 distribution is then corrected by integrating the signal corresponding to the spurious peak into the signal corresponding to the main peak. The corrected apparent T2 distribution and the effective gradient are then used to interpret the NMR data. Thereafter, the interpreted data is used to determine one or more characteristics of the surrounding subsurface rock formation media.
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公开(公告)号：WO2022242200A1
公开(公告)日：2022-11-24
申请号：PCT/CN2022/070683
申请日：2022-01-07
申请人： 中国石油天然气股份有限公司
IPC分类号： E21B49/00
摘要： 一种海相碳酸盐岩生屑灰岩油藏高渗条带识别方法及装置，方法包括：根据试井资料和生产测井资料确定单井流动单元的单层动态渗透率和单层比采液指数；根据生产测井资料分析多层合采的层间干扰情况，综合利用生产测井资料中的单层产量及单井流动单元的单层动态渗透率和单层比采液指数建立高渗条带动态标准并提取单井高渗条带；在取芯井中根据层序地层、岩石相、沉积相及岩石物理相研究成果，划分高渗储集层成因类型，并确定高渗条带在岩石相、沉积相和层序界面中的分布规律；建立高渗条带测井识别模式，根据高渗条带测井识别模式在全油藏范围内逐井识别高渗条带，实现全油藏测井解释。
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公开(公告)号：WO2022173323A1
公开(公告)日：2022-08-18
申请号：PCT/RU2021/000166
申请日：2021-04-19
发明人： ГУРЬЯНОВ, Андрей Валерьевич , СУПРАНКОВ, Кирилл Андреевич , ГАЗИЗОВ, Руслан Рашидович , БУЗИН, Павел Владимирович , МАЛЯВКО, Евгений Александрович
摘要： Изобретение относится к нефтедобывающей промышленности и может быть использовано при контроле за разработкой продуктивного пласта. Осуществляют получение полимерной композиции, содержащей монодисперсные люминесцирующие полимерные микросферы в качестве маркеров, спуск маркера в составе указанной полимерной композиции в скважину, отбор проб пластового флюида на поверхности и последующий их анализ на предмет определения количества маркеров различных кодов с использованием проточной цитофлуорометрии. Получение указанного маркера осуществляют с использованием люминесцирующего вещества, как индивидуально, так и в виде смесей указанных люминесцирующих веществ путем радикальной сополимеризации, дисперсионной поликонденсации или гидролитической поликонденсации. В качестве несущей среды используют полимерную композицию, указанное введение осуществляют в компоновку заканчивания горизонтальной скважины, указанное определение кодов и концентраций маркеров в пробах скважинной жидкости осуществляют с использованием проточной цитофлюорометрии с последующей обработкой ее результатов. Осуществляют расчет вклада соответствующих интервалов в общий дебит скважины фаз пластового флюида для повышения степени достоверности результатов определения внутрискважинных притоков нефти, воды и газа.
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公开(公告)号：WO2022159701A1
公开(公告)日：2022-07-28
申请号：PCT/US2022/013309
申请日：2022-01-21
发明人： HAN, Yanhui
摘要： A method for obtaining a maximum horizontal stress at a depth of a geological formation, includes: setting an estimate SHmax of the maximum horizontal stress; conducting an elastoplastic modeling simulation of the geological formation around a wellbore (104) with the estimate SHmax and obtaining a simulated value ϕb,1 of a breakout angle, wherein the breakout angle is a half-width of a breakout region; and upon determining that the estimate ϕb,1 is greater than or equal to a prescribed value and is different from a measured breakout angle ϕb,m at the depth by more than a threshold value, repeatedly changing the estimate SHmax and conducting the elastoplastic modeling simulation.
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6.发明申请
公开(公告)号：WO2022132348A1
公开(公告)日：2022-06-23
申请号：PCT/US2021/058882
申请日：2021-11-11
发明人： PETERSON, James , HOWELL, Ryan
摘要： A system, method, and apparatus can identify groundwater as a drilling machine (200) drills a drill hole (100). Presence or not of groundwater can be continuously monitored as the drilling machine (200) drills the drill hole (100) using one or more groundwater or moisture sensors (240) to detect moisture or water content of cuttings from the drill hole (100). Such data from the sensor(s) (240) can be processed to determine the presence or not of groundwater and associate the determination with the corresponding location within the drill hole (100). A mapping or logging of the drill hole (100) can be generated with the location or locations where the presence of groundwater is identified.
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公开(公告)号：WO2022132137A1
公开(公告)日：2022-06-23
申请号：PCT/US2020/065172
申请日：2020-12-15
发明人： SAMUEL, Robello
IPC分类号： E21B47/007 , E21B49/00 , E21B44/00 , E21B47/26
摘要： Methods and systems for determining wellpath tortuosity are disclosed. In accordance with an embodiment, a tortuosity of a borehole segment is determined and a tortuosity of a casing associated with the borehole segment is determined based, at least in part, on the tortuosity of the borehole segment and a path conformity characteristic of the casing. A tortuosity variation factor is generated based on a value of the tortuosity of the casing relative to a value of the tortuosity of the borehole segment.
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公开(公告)号：WO2022128532A1
公开(公告)日：2022-06-23
申请号：PCT/EP2021/084156
申请日：2021-12-03
摘要： Bei einer Vorrichtung und bei einem Verfahren zum Vortreiben eines Tunnels ist ein Schneidrad (109) an seiner Schneidradvorderseite (112) mit Messmodulen (151, 154, 157, 160, 163) von Sensormittel bestückt, um die Konsistenz des zwischen der Schneidradvorderseite (112) und einer Ortsbrust (118) vorhandenen Materials durch Erfassen von unterschiedlichen Typen von hierfür charakteristischen Messwerten direkt zu beproben.
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公开(公告)号：WO2022115332A1
公开(公告)日：2022-06-02
申请号：PCT/US2021/060168
申请日：2021-11-19
发明人： ALRUWAILI, Khalid, M. , FEHR, Cory
摘要： Apparatus for testing a rock in a borehole includes a monitoring head having sensors (303) and transmitters inside a cylindrical body. A shear head (205) coupled to the monitoring head has a tubular structure with a plurality of apertures (203) formed around an outer surface of the tubular structure. A plurality of cones (603) are coupled with modified tips and disposed within the plurality of apertures (203). A sheet (601) supports the plurality of cones (603) inside the shear head (205). The sheet (601) is selectively movable between a first radial position and a second radial position for the modified tips to apply radial force to the rock (605) by adjustment of an internal pressure of the shear head (205). The transmitters transmit the recorded acoustic emission to a computing system for determining properties of the rock (605) while the shear head device is testing the rock in the bore..
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公开(公告)号：WO2022103863A1
公开(公告)日：2022-05-19
申请号：PCT/US2021/058819
申请日：2021-11-10
申请人： CHEVRON U.S.A. INC.
摘要： A well may be selected from a group of wells. Multiple scenarios of boundary locations within the selected well may be determined based on propagation of boundaries from other wells to the selected well. A visual representation of the multiple scenarios of boundary locations within the selected well may be provided based on spatial arrangement of the wells within the group of wells. A visual representation of the spatial arrangement of the wells within the group of wells may be provided.
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