EP4204660A1 - Computer-implementiertes verfahren zur bestimmung einer betriebseigenschaft einer gestänge-tiefpumpe, analysevorrichtung und pumpsystem hierfür - Google Patents
Computer-implementiertes verfahren zur bestimmung einer betriebseigenschaft einer gestänge-tiefpumpe, analysevorrichtung und pumpsystem hierfürInfo
- Publication number
- EP4204660A1 EP4204660A1 EP21786788.6A EP21786788A EP4204660A1 EP 4204660 A1 EP4204660 A1 EP 4204660A1 EP 21786788 A EP21786788 A EP 21786788A EP 4204660 A1 EP4204660 A1 EP 4204660A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- operating
- load
- curve points
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
- E21B43/127—Adaptations of walking-beam pump systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/008—Monitoring of down-hole pump systems, e.g. for the detection of "pumped-off" conditions
- E21B47/009—Monitoring of walking-beam pump systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/22—Fuzzy logic, artificial intelligence, neural networks or the like
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N20/00—Machine learning
- G06N20/20—Ensemble learning
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N5/00—Computing arrangements using knowledge-based models
- G06N5/01—Dynamic search techniques; Heuristics; Dynamic trees; Branch-and-bound
Definitions
- the invention relates to a computer-implemented method for determining an operating characteristic of a rod pump, the pump having a pump head which is connected to a kinematic converter via a rod, and the kinematic converter being operated by a motor is driven and a load-displacement diagram with curve points for the feed pump is determined by means of a detection means by an analysis device and is provided as an operating load-displacement diagram with operating curve points.
- the invention relates to a computer program, an electronically readable data carrier and a data carrier signal.
- the invention relates to an analysis device with a memory and a pumping system for determining an operating characteristic of a deep linkage pump.
- Deep pumps or conveying pumps are used as conveying devices for the extraction of liquids stored underground if the reservoir pressure is not sufficient for them to be able to pump them independently or independently. reach the surface in sufficient quantity. They are mostly used to extract oil. Further areas of application are the pumping of brine and healing waters.
- linkage pumps which are also called horsehead pumps, nickel donkeys or nickers because of their appearance and their movement.
- the actual pumping mechanism - a piston with non-return valves - is located in a separate pipe string in the borehole near the oil-bearing layer.
- the piston is set in a continuous up and down motion by means of a screwable rod from a pump stand located on the ground surface. Movement offset . This is accomplished by what is known as the horse's head. This consists of a circular arc segment arranged as a balancer at the end, to which a pair of steel cables or chains is clamped at the top.
- the drive is mostly electric. However, if there are sufficient energy-containing gases dissolved in the crude oil, some of these gases can be separated from the conveyed material on site by means of a degasser and fed to a gas motor that drives the pump.
- the working stroke is 1 to 5 m. Two and a half to twelve strokes per minute are usual.
- the rod-type deep pump can be used economically up to pumping depths of around 2500 m. Other pump systems are more suitable for greater depths due to the heavy weight of the liquid column to be lifted.
- the pump type "Mark II" from the Texan manufacturer Lufkin Industries is particularly suitable for high delivery rates from great depths due to its special movement geometry.
- suction rod which is a steel rod typically between 25 and 30 feet in length and threaded at both ends, used in the oil industry to connect the surface and downhole components of a reciprocating pump installed in an oil well to connect with each other.
- An extremely valuable tool for analyzing well performance is a well test stand, which measures polished rod stress versus polished rod position.
- Dynamometers can be used to plot bar position and bar load over time.
- the load sensing portion of the dynamometer is attached to the polished rod so that the load can be sensed and sent to a recorder.
- a Companion piece of lifting beam mounted dynamometer captures the position of the polished rod and sends it to the same recorder.
- the graph produced is called a dynagraph, or more commonly a dynamometer or dynagraph map, and is equivalent to a load-displacement graph.
- Dynamometer maps taken at the surface can seldom be used directly to record downhole pump operating conditions, as they also reflect all of the forces (static and dynamic) occurring from the pump to the wellhead. However , if a dynamometer is located directly above the pump , the map plotted is a true indicator of pump operation .
- Gilbert's Dynagraph (a mechanical dynamometer) succeeded in doing this in the 1930s. Bar loads immediately above the pump, plotted as a function of pump position, give Dynagraph maps a name to distinguish them from surface maps.
- sensors have been used to record the operating conditions of a rod pump, which record the forces acting or the current position (inclination) of the moving beam (English “beam” or “cranck arm”), for example by force sensors, Hall sensors or proximity sensors.
- the position of the linkage is calculated from this.
- it is complex to calibrate the respective sensors with one another.
- imprecise calibration can result in errors that can have an unfavorable effect on the measurement data evaluation.
- the object of the invention is achieved by a method of the type mentioned at the outset, with the analysis device providing at least one model-load-displacement diagram with respective model curve points in a training mode, which is normalized to a predefined reference variable, and at least two Subsets of the model curve points based on machine learning are recorded as a first and at least a second feature, and the first and the at least one second feature is generated and trained in the form of at least one random forest model with a Kmeans algorithm, and in an operating mode, the operating curve points are normalized to the reference variable and it is checked whether there is a similarity of at least a subset of the operating curve points to the at least one random forest model, and if so, the operating property of the pump is determined from this .
- model load-path diagrams can be used by other pumps and, for example, a pump that has just been commissioned can be used immediately, ie without prior training with its own operating load-path diagrams.
- An elliptical Fourier transformation can be used for normalization.
- Deviations of the operational load-displacement diagram from the load-displacement diagram model can, for example, be recognized as an undesirable operating property of the pump itself.
- a currently detected pumped medium which is being pumped by the pump, can be identified by comparing it with a corresponding training model that describes precisely this medium.
- the pump medium is usually a mixture of gas, sand/rock particles, water, oil and sometimes also chemical additives.
- a development of the invention provides that the at least two random forest models with low correlation are generated by randomly selecting one point from the set of operating curve points and replacing it from the set of operating curve points he follows . This is advantageous because the features are reliably detected, which increases the probability of detection when determining the operating characteristics of the pump.
- the at least two random forest models with low correlation are generated in that a subset is further taken into account when separating a node in a random forest model.
- a sequence of the first and the at least one second characteristic within a pumping cycle during operation of the pump is taken into account in the respective random forest model when determining the operating characteristics of the pump.
- the first or the at least one second feature includes a distance from operating curve points in the operating load-path diagram (DC1-DC5).
- the distance between operating curve points represents the local velocity and acceleration of the pump.
- the local acceleration at a respective operating curve point can also be used, which is mathematically determined by the first or second derivation of the curve function for the two axes of the curve can be described .
- the probability of detection when determining the operating characteristics of the pump can be increased.
- the motor is operated electrically and a detection means is also provided to detect the power consumption of the motor during its operation, from which the operating properties of the feed pump are determined.
- the recording of the load-displacement diagram can be simplified, at the same time the accuracy in determining the curve points can be increased and the overall accuracy in determining the operating property can be further improved by the combination with the analysis method mentioned.
- the measurement curve points and the model curve points between two adjacent points on the respective curves each have distances which on average are at least 50%, preferably at least 80% and particularly preferably at least 95% of the is the largest distance between two adjacent points of the respective curve.
- Distance deviations of up to 20% of a respective distance between two consecutive points can be regarded as equidistant distances of the curve points.
- the sequence of the curve points results, for example, when they are recorded.
- singularities of curve points for the load-displacement diagram can be reduced, as a result of which the reference point can be determined more stably and precisely, and the accuracy in determining the operating property can be further improved.
- the object according to the invention is achieved by a computer program comprising commands which, when they are executed by a computer, cause the computer to carry out the method according to the invention.
- the object according to the invention is achieved by an electronically readable data carrier with readable control information stored thereon, which comprises at least the computer program according to the invention and is designed in such a way that they carry out the method according to the invention when using the data carrier in a computing device.
- the object according to the invention is achieved by a data carrier signal which transmits the computer program according to the invention.
- the object according to the invention is also achieved by an analysis device with a memory of the type mentioned at the outset, which is set up to analyze a provided operating-load-path diagram using the method according to the invention and to determine the operating properties from it.
- the analysis device has two operating modes, namely a training mode and an operating mode.
- the training mode is used to generate and train a load-displacement diagram model of the pump, with separate load-displacement diagram models being able to be trained for a number of operating modes of the pump in order to recognize these modes accordingly.
- the training mode is run through at the beginning of the operation of the pump system in order to make one or more load-displacement diagram models based on "machine learning” (ML) available for the subsequent operating mode, in which the ongoing operation of the Pumping system can be continuously monitored by the analysis device.
- ML machine learning
- the operating mode is used to compare a currently recorded data set in the form of measuring points recorded by a recording means, for example with a selected load-displacement diagram model and, if there is agreement with the load-displacement diagram model, the operating mode assigned to this model to recognize .
- a change in the recognized operational property can provide an indication of a further parameter for the operational property.
- a sequence of changes in recognized operating media can provide information as to whether there is material inhomogeneity in the medium.
- the object according to the invention is also achieved by a pump system of the type mentioned at the outset, the pump having a pump head which is connected to a kinematic converter via a linkage, and the kinematic converter is driven by a motor during operation, and a detection means which is set up to record and provide a load-travel diagram of the pump with curve points, and the analysis device according to the invention with a memory, which is set up to determine the operating property from the provided operation-load-travel diagram .
- Fig. 1 an exemplary embodiment of a system according to the invention with a rod pump
- Fig. 2 an exemplary embodiment for a pump head of a rod deep pump
- FIG. 3 an exemplary embodiment of a flowchart of a method for determining a load-path diagram from the power consumption of an electrically operated pump motor
- Fig. 4 a first exemplary embodiment for a load-displacement diagram
- Fig. 7 shows a chronological representation of a current profile of an electric drive motor for a rod submersible pump
- Fig. 1 shows an exemplary embodiment of a pumping system 100 according to the invention with a rod pump 1 of the sucker-rod pump type.
- the pump system 100 includes a pump head 110 which is connected to a kinematic converter 120 via a linkage 5 , 10 .
- the linkage 5, 10 forms what is known as a "rod cord” and runs through a wellhead 6, to which a flow line 7 for draining off a conveyed medium 14 is connected.
- a casing 8 adjoins the wellhead 6, in which a tube 9 runs, which carries the rod assembly 5 or 10 leads .
- the pump head 110 which contains a piston 11 in a barrel 12 , is fastened to the lower end of the linkage 10 . A movement of the piston 11 causes the delivery medium 14 to be pumped out.
- the casing 8 is formed in a borehole 13 .
- the kinematic converter 120 is driven, for example, by a drive machine in the form of an electric motor 3 via a reduction gear 4 .
- Converter 120 may additionally include a hydraulic booster.
- the mechanical connection of the kinematic converter 120 takes place via a moving beam 2, but can vary depending on the type of pump used.
- the kinematic converter 120 converts a rotary movement of the motor 3 into a linear movement of the linkage 5 , 10 .
- the properties of the kinematic converter 120 can be described, for example, via leverage and translations, as well as via the electrical drive power and moving masses. It should be noted here that the position of a centrifugal mass along a rotational movement and the corresponding action of force on the linkage 10 is related in terms of time, which is referred to as the reference phase angle. For a particular pump assembly, a reference phase angle can be determined using the kinematic principles of mechanics, as known to those skilled in the art.
- a detection means 110 is provided, which is set up to detect the current consumption and the operating voltage of the individual phases of the motor 3 during its operation. This can be done, for example, using an ammeter or voltmeter, which records discrete measuring points with current or voltage values in particular with high temporal resolution.
- the effective power consumption and the apparent power consumption can be determined from the recorded current and operating voltage values.
- an analysis or computing device 140 with a memory 150 is provided, which is set up to carry out the method according to the invention with the aid of the detection means 130 .
- a reference phase angle for the kinematics converter 120 can be determined using the properties of the kinematics converter 120 and the power consumption 72 of the motor 3, which defines the relationship between the maximum 83 of the power consumption 72 and the maximum of the on the linkage of the Deep pump 1 describes the acting force, can be determined. It is also known to those skilled in the art how a torque curve can be determined from the power consumption 72 of the motor 3 using the properties of the kinematic converter 120 .
- the recording means 130 is set up to record an operating-load-path diagram of the pump 1 with curve points and to provide it to the computing or analysis device 140 with the memory 150 .
- the analysis device 140 is set up to analyze the provided operating-load-path diagram using the method according to the invention and to determine the operating property from it.
- the method according to the invention can be implemented as a computer program that includes instructions which, when they are executed by a computer 140, cause the latter to carry out the method according to the invention.
- the method according to the invention can be available as an electronically readable data carrier with readable control information stored thereon, which comprises at least the computer program according to the invention and is designed in such a way that they carry out the method according to the invention when using the data carrier in a computing device 140 .
- the method according to the invention can also be available as a data carrier signal which transmits the computer program according to the invention.
- Fig. 2 shows another, more detailed example of a pump head 111 according to the prior art.
- the rod cord or the linkage 10 is shown in FIG. 1 driven and set in an up and down linear movement.
- a cover tube 15 with vertical grooves is arranged in the borehole 13 and guides a rotating tube 18 with spiral grooves inside the cover tube 15 via a holding device 16 and a self-aligning bearing 17 .
- a pickup tube 19 is connected via a wing nut 20 to a piston assembly 21 located in a pump liner 22 .
- a calibrated rod 23 is connected to the linkage 10 via a pin 24 and a retainer 25 which drives the piston assembly through linear motion.
- Fig. 3 shows an exemplary embodiment of a flow chart of a method for determining a load-displacement diagram from the power consumption of an electrically operated pump motor with the following steps: a) detecting the current consumption and the operating voltage of the motor 3 with a sampling frequency over at least one pump cycle, which j four operating phases of the deep pump 1 can be assigned in each case, in the form of discrete measuring points with current values, and from this determination of the power consumption 72 of the motor 3 with power values, b) determination for a pumping cycle of a period 85 and a maximum 82 of the power consumption 72, which corresponds to the torque -Maximum corresponds to the deep pump 1, c) determining a reference phase angle for the kinematic converter 120 using the properties of the kinematic converter 120 and the power consumption of the motor 3, which determines the relationship between the maximum 82 of the power consumption and the maximum of the linkage the deep pump 1 describes the acting force, d) determining a torque curve from the power consumption of the motor 3 using the properties of the
- the power values can be determined by the product of the discrete current values and the operating voltage.
- the period duration 85 can be determined, for example, with the aid of an approximated polynomial 80 through the power values of the measuring points.
- the period duration 85 can, for example, also be determined with the aid of a polynomial 80, which takes into account statistical mean values of the power values of the respective measuring points over at least five, preferably at least ten, particularly preferably at least fifty pump cycles for support points of the polynomial.
- a reference value 81 can be determined for the measurement points, at which there is a maximum for the change in the respective power value between two measurement points directly following one another, and the period duration 85 is determined with the aid of the reference value 81 .
- the operating characteristics of the delivery pump 1 can be determined using a load-path diagram 30, 50, 54, 57, 60-65, which is determined from the torque curve determined in step d) using the determined in step b). Period duration and the reference phase angle determined in step c) is determined.
- the reference phase angle can be determined with respect to the absolute maximum of the power values of the measurement points within a pump cycle.
- Fig. 4 to fig. 6 show examples of load-displacement diagrams, which are frequently used to determine the operating characteristics of rod-end pumps.
- FIG. 4 shows a load-displacement diagram 30 .
- the x-axis is the polished rod position 31 and the y-axis is the polished rod load 32 .
- a lowest point of the pump stroke 33 and a highest point of the pump stroke 34 can be seen.
- PPRI tip of the polished rod 35
- a map 36 of the polished rod for zero pumping velocity is drawn in dashed lines.
- a pump speed polished rod map 37 is greater than zero.
- a minimum polished rod 38 load (MPRL) is shown.
- a gross piston load 39 can also be read off.
- a weight of the rods in the fluid 40 can be determined, as well as forces 41 and 42, and a pump stroke or Pump way 43 .
- Fig. 5 shows load-displacement diagrams 50 with rod load at the desired value as a function of the load 32 of the polished rod over the respective position 31 of the polished rod.
- a load-travel diagram 51 shows operation at full pump output.
- a load-displacement diagram 52 shows operation when the conveying medium has been pumped dry.
- a respective desired value 53 can be seen.
- load-displacement diagrams 54 are shown with rod load during a change in operation as a function of the load 32 of the polished rod over the respective position 31 of the polished rod, with the respective angles 55, 56 being readable.
- load-displacement diagrams 57 with rod load are shown with the respective mechanical work of the rods.
- Diagram 60 shows load-displacement diagrams in normal operation.
- Diagram 61 shows load-displacement diagrams for a fluid bearing.
- Diagram 62 shows load-displacement diagrams for exposure to gas in the underground storage facility.
- Diagram 63 shows a load-displacement diagram for a stuck piston.
- Diagram 64 shows the load-travel diagram in the event of a leak through a stationary valve.
- a diagram 65 shows a load-travel diagram in the event of a leak through a moving valve.
- the operating characteristics of the pump 1 can be determined by the analysis device 140 from such load-displacement diagrams.
- the analysis device 140 is provided with at least one model-load-displacement diagram with respective model curve points in a training mode.
- the model load-displacement diagram is then normalized to a predefined reference value by adjusting and standardizing the value ranges.
- At least two subsets of the model curve points are then recorded on the basis of machine learning as a first and at least a second feature.
- a feature can be, for example, a specific curve shape or the position of curve points in the load-displacement diagram, distances or changes in distance between individual curve points in the load-displacement diagram.
- the first and the at least one second feature are used to generate and train at least one random forest model with the aid of a kmeans algorithm.
- the analysis device 140 normalizes the operating curve points to the reference variable.
- the analysis device 140 checks whether there is a similarity of at least a subset of the operating curve points to the at least one random forest model.
- the operating characteristics of the pump 1 are determined therefrom.
- at least two random forest models can be formed, which have a low correlation to one another.
- the at least two random forest models with low correlation can be generated by randomly selecting one point from the set of operating curve points and replacing it from the set of operating curve points.
- the at least two random forest models with low correlation can be generated in that a subset is further taken into account when splitting a node in a random forest model.
- a sequence of the first and the at least one second feature within a pump cycle during operation of the pump 1 can be taken into account in the respective random forest model when determining the operating characteristics of the pump 1 .
- Fig. 7 shows an example of a time representation of a power curve of an electric drive motor for a rod pump, which was determined from the power consumption and operating voltage of the motor 3 .
- the representation has a time axis 70 and an axis 71 for the amplitude of the current or power consumption on .
- a power consumption 72 is shown for which a zero point or zero axis 80 and a polynomial for average power consumption 81 can be determined.
- a maximum value of the average power consumption 82 and zero crossings of the average power consumption 83 , 84 can be determined for the polynomial 80 .
- a period 85 of the averaged power consumption can be determined for the polynomial 80 . From this, a phase angle 86 of the averaged power consumption can be determined, which describes the relationship between the rotational movement of the motor 3 and the linkage 10 of the pump 1 .
- a corresponding load-displacement diagram can be determined from the determined values, in order to derive the operating properties of the deep-acting rod pump 1 in a simple manner.
- the desired operating characteristics of the rod pump 1 can be defined by one or more corresponding load-displacement diagrams in the sense of "target values", which are generated and trained in a training mode as a model based on machine learning load-displacement diagrams of other pumps can also be used.
- a question about the gas content in an oil-water-gas mixture at a well can be answered by creating and training a training model for a known mixture.
- This training model serves as a reference to an operating load-displacement diagram. Deviations in the operational load-displacement diagram from the training model can be recognized as an undesirable operational property.
- a load-displacement diagram model with model curve points is generated and trained by the analysis device 140 on the basis of machine learning.
- a reference point check can be carried out using the following steps:
- At least two predefined analysis areas which at least partially include the model curve points, can then be determined in the load-displacement diagram model.
- a reference point can then be determined from the model curve points for at least one area of the analysis areas, which, for example, corresponds to the geometric center of gravity of the curve points of the respective area or the area formed by the curve points and the area boundaries, for example the diagram axes.
- the analysis device 140 can check for the operating load-path diagram whether the at least one reference point determined in the training mode is enclosed within the area enclosed by the operating curve points.
- the operating characteristics of the delivery pump 1 can be determined from the reference point identified as "trapped".
- Fig. 8 shows an example of an operating load path diagram DC1 with curve points.
- regions Q1-Q2 are shown in the form of quadrants, defined by a value 2 for path 31 and a value 0. 5 for the load 32 are separated.
- the areas can, for example, directly adjoin one another, so that there are no areas with curve points enclosed therein that are not assigned to reference points.
- areas can also be excluded, for example to prevent areas with frequently error-prone curve points from being deliberately excluded in order to achieve an improvement in stability when determining the operating properties of the pump.
- area boundaries can also overlap, so that a curve point can be assigned to several areas.
- the measurement curve points and the model curve points between two adjacent points on the respective curves can each have distances which on average are at least 50%, preferably at least 80% and particularly preferably at least 95% of the largest distance between two adjacent points of the respective curve is .
- Fig. 9 shows an example of an operating load path diagram DC2 with curve points.
- a centroid point C21-C24 is drawn in for each of four areas, analogously to the previous figure, which corresponds to the geometric focus of the curve points of the respective area or the area formed by the curve points and the area boundaries, for example the diagram axes.
- the areas at least partially overlap one another in order to better define a reference point of the area if, for example, there are too few curve points in an area. Furthermore, for example, at least one area can be defined for which it is provided that no included curve point is taken into account in the subsequent test.
- post-processing By means of a centroid-based post-processing (“post-processing”), the recognition of operating characteristics can be carried out in a particularly accurate manner and the recognition rate when determining the operating characteristic can be further improved.
- an iterative test can also be provided by using the method according to the invention, in order to gradually substantiate certain suspicions regarding a suspected operating characteristic by adapting the criteria with regard to the training model.
- the accuracy requirements can be successively increased by increasing reference points in the respective subsequent training model, or alternative reference points are examined in order to draw further conclusions for the operational property to be examined, for example by means of a combination of two different training models.
- Fig. 10 shows an example of an operating load path diagram DC3 with curve points.
- centroid point C31-C34 is drawn in for each of four areas, which corresponds to the geometric center of gravity of the curve points of the respective area.
- Fig. 11 shows an example of an operating load-path diagram DC4 with curve points.
- eight ranges are shown, defined by a value of 2 for path 31 and a value greater than or less than 0. 5 for the load 32 are separated, where for the value 0 . 5 two further areas are provided on the load axis 32 .
- a centroid point C41-C48 is drawn in for each of the eight areas, which corresponds to the geometric focus of the curve points of the respective area.
- Fig. 12 shows an example of an operating load path diagram DC5 with curve points.
- centroid point C51-C58 is drawn in for each of eight areas, which corresponds to the geometric center of gravity of the curve points of the respective area.
- Rods Load-displacement diagram in normal operation Load-displacement diagram for a fluid bearing Load-displacement diagram under the influence of gas Load-displacement diagram for a stuck piston Load-displacement diagram for a leak through a stationary valve Load path diagram in the event of a leak through a moving valve
- Time axis Axis for the amplitude of the current or Power consumption Power consumption selected zero point or .
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20202027.7A EP3985222A1 (de) | 2020-10-15 | 2020-10-15 | Computer-implementiertes verfahren zur bestimmung einer betriebseigenschaft einer gestänge-tiefpumpe, analysevorrichtung und pumpsystem hierfür |
| PCT/EP2021/076393 WO2022078737A1 (de) | 2020-10-15 | 2021-09-24 | Computer-implementiertes verfahren zur bestimmung einer betriebseigenschaft einer gestänge-tiefpumpe, analysevorrichtung und pumpsystem hierfür |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4204660A1 true EP4204660A1 (de) | 2023-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| EP20202027.7A Pending EP3985222A1 (de) | 2020-10-15 | 2020-10-15 | Computer-implementiertes verfahren zur bestimmung einer betriebseigenschaft einer gestänge-tiefpumpe, analysevorrichtung und pumpsystem hierfür |
| EP21786788.6A Withdrawn EP4204660A1 (de) | 2020-10-15 | 2021-09-24 | Computer-implementiertes verfahren zur bestimmung einer betriebseigenschaft einer gestänge-tiefpumpe, analysevorrichtung und pumpsystem hierfür |
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| EP20202027.7A Pending EP3985222A1 (de) | 2020-10-15 | 2020-10-15 | Computer-implementiertes verfahren zur bestimmung einer betriebseigenschaft einer gestänge-tiefpumpe, analysevorrichtung und pumpsystem hierfür |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230366308A1 (de) |
| EP (2) | EP3985222A1 (de) |
| CA (1) | CA3198701A1 (de) |
| WO (1) | WO2022078737A1 (de) |
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| JP2003505800A (ja) * | 1999-07-23 | 2003-02-12 | カーヴエンタ ソフトワークス,エルエルシー | 制御幾何(コントロールジェオメトリ)を用いた幾何学的設計およびモデリングシステム |
| US11884980B2 (en) * | 2018-11-28 | 2024-01-30 | Bioscreening & Diagnostics Llc | Method for detection of traumatic brain injury |
| CN113167269B (zh) * | 2018-12-16 | 2024-09-06 | 森西亚有限责任公司 | 泵系统 |
| CN110600135A (zh) * | 2019-09-18 | 2019-12-20 | 东北大学 | 一种基于改进随机森林算法的乳腺癌预测系统 |
-
2020
- 2020-10-15 EP EP20202027.7A patent/EP3985222A1/de active Pending
-
2021
- 2021-09-24 WO PCT/EP2021/076393 patent/WO2022078737A1/de not_active Ceased
- 2021-09-24 CA CA3198701A patent/CA3198701A1/en active Pending
- 2021-09-24 EP EP21786788.6A patent/EP4204660A1/de not_active Withdrawn
- 2021-09-24 US US18/030,864 patent/US20230366308A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022078737A1 (de) | 2022-04-21 |
| US20230366308A1 (en) | 2023-11-16 |
| CA3198701A1 (en) | 2022-04-21 |
| EP3985222A1 (de) | 2022-04-20 |
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