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公开(公告)号：EP4234881A2
公开(公告)日：2023-08-30
申请号：EP23178161.8
申请日：2019-11-27
IPC分类号： E21B47/135
摘要： A method of developing a fluid flow model for a wellbore comprises: performing a plurality of flow tests comprising introducing one or more fluids of a plurality of fluids into a flowing fluid within a conduit at predetermined locations; obtaining an acoustic signal from a sensor within the conduit for each flow test, wherein the acoustic signal comprises acoustic samples across a portion of the conduit including the predetermined locations; determining a plurality of frequency domain features from the acoustic signal, wherein the plurality of frequency domain features are obtained across the portion of the conduit including the predetermined locations; and training a plurality of fluid flow models using, as inputs, the plurality of frequency domain features, where a first fluid flow model of the plurality of fluid flow models is different than a second fluid flow model of the plurality of fluid flow models.
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公开(公告)号：EP3682089A1
公开(公告)日：2020-07-22
申请号：EP18768891.6
申请日：2018-09-12
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公开(公告)号：EP3670830A1
公开(公告)日：2020-06-24
申请号：EP20154638.9
申请日：2017-04-06
IPC分类号： E21B47/10
摘要： A system for detecting an event within a wellbore, the system comprising: a processor unit comprising a processor and a memory, wherein the processor unit is adapted for signal communication with a receiver, and wherein the memory comprises an analysis application. When executed on the processor, the analysis package configures the processor to:
(a) receive, from the receiver, a signal comprising a plurality of different frequency domain features for a location in a wellbore, wherein the frequency domain features are indicative of an acoustic signal within the wellbore, and wherein the frequency domain features are indicative of the acoustic signal across a frequency spectrum at the location;
(b) compare the plurality of frequency domain features with one or more event signatures, wherein the one or more event signatures comprise thresholds or ranges for each of the plurality of different frequency domain features;
(c) determine that the plurality of frequency domain features match at least one event signature of the one or more event signatures;
(d) determine the occurrence of at least one event at the location based on the determination that the plurality of frequency domain features match the at least one event signature; and
(e) generate an output of the occurrence of the at least one event based on the determination.-
公开(公告)号：EP3608503A1
公开(公告)日：2020-02-12
申请号：EP19198488.9
申请日：2018-03-29
IPC分类号： E21B47/10
摘要： A method of detecting a flow condition within a wellbore can comprise receiving a first signal from a sensor, wherein the signal comprises an indication of an acoustic signal received at one or more depths within the wellbore and is indicative of the acoustic signal across a frequency spectrum. The method can include receiving a second signal comprising an indication of a pressure or flow within the wellbore, determining a plurality of frequency domain features of the acoustic signal across the frequency spectrum; comparing the plurality of frequency domain features to an overburden event signature; determining a presence of an overburden event at one or more depths within the wellbore based on the plurality of frequency domain features matching the overburden event signature at one or more depths in the wellbore; correlating the overburden event with the pressure or flow; and determining a presence and location of the overburden event within the wellbore based on the presence of the overburden event and the correlation of the overburden event with the pressure or flow.
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公开(公告)号：EP3567211A1
公开(公告)日：2019-11-13
申请号：EP18171707.5
申请日：2018-05-10
摘要： A method of dynamically allocating a total amount of produced water (PW) from a reservoir during enhanced oil recovery (EOR) via a low salinity or softened water EOR flood by receiving measurement data; receiving reservoir configuration information comprising: an EOR injection rate associated with one or more EOR injection zones, a disposal zone injection rate associated with one or more disposal injection zones, and a non-reinjection disposal rate associated with one or more non-reinjection disposal routes; determining a blending rate comprising at least a portion of the PW production rate and at least a portion of the low salinity or softened water injection rate to provide a blended injection fluid; blending at least a portion of the PW with at least a portion of the low salinity or softened water at the blending rate; and dynamically allocating the PW production rate among injection and/or non-reinjection routes.
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公开(公告)号：EP2334905B1
公开(公告)日：2019-06-05
申请号：EP09792557.2
申请日：2009-09-15
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9.发明授权
公开(公告)号：EP2313607B1
公开(公告)日：2018-03-07
申请号：EP09766109.4
申请日：2009-06-11
CPC分类号： E21B43/00
摘要： Embodiments of the invention identify a plurality of operating points for oil and/or gas producing systems, each operating point being characterised by a set of operating parameters which can be used to control components of the actual oil and/or gas producing system. These generated operating points may be collectively presented in a graphical manner to an operator of the oil and/or gas producing system, who can systemically configure the components of the oil and/or gas producing system to move, in an informal manner, through a path of operating points in order to reach what appears from the generated operating point data to be an optimal operating region. The oil and/or gas producing system may also be referred to as a hydrocarbon producing system.
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10.发明公开SYSTEMS AND METHODS FOR DETERMINING ENHANCED EQUIVALENT CIRCULATING DENSITY AND INTERVAL SOLIDS CONCENTRATION IN A WELL SYSTEM USING MULTIPLE SENSORS 审中-公开系统和方法来确定当量循环改进的密度和区间固体浓度井系统使用多个传感器
公开(公告)号：EP2920403A1
公开(公告)日：2015-09-23
申请号：EP13711816.2
申请日：2013-03-14
摘要： Multiple sensors on a drill string can be utilized to perform equivalent circulation density (ECD) analysis. By utilizing multiple ones of the sensors, the pressure drop in each section of the wellbore can be classified. Additionally, the inclusion of multiple sensors in the drill string allows a wellbore to be sectioned into intervals bounded by any two sensors. Pressure events occurring in a single section of the wellbore bounded by any two sensors can be isolated and analyzed. The isolation can be achieved by subtracting the pressure measured on the shallower sensor from that measured on the deeper sensor.
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