CN106247000A - A kind of ball-and-seat analyzing oil well liquid-supplying situation and the analysis method of oil well liquid-supplying situation - Google Patents
A kind of ball-and-seat analyzing oil well liquid-supplying situation and the analysis method of oil well liquid-supplying situation Download PDFInfo
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- CN106247000A CN106247000A CN201610648578.7A CN201610648578A CN106247000A CN 106247000 A CN106247000 A CN 106247000A CN 201610648578 A CN201610648578 A CN 201610648578A CN 106247000 A CN106247000 A CN 106247000A
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- 239000003129 oil well Substances 0.000 title claims abstract description 90
- 238000004458 analytical method Methods 0.000 title claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000013500 data storage Methods 0.000 claims abstract description 12
- 230000033001 locomotion Effects 0.000 claims description 87
- 239000007788 liquid Substances 0.000 claims description 72
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 16
- 230000017525 heat dissipation Effects 0.000 claims description 11
- 239000000295 fuel oil Substances 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 6
- 238000012952 Resampling Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000013598 vector Substances 0.000 claims description 3
- 238000011524 similarity measure Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 4
- 230000008859 change Effects 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 2
- 210000000352 storage cell Anatomy 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 21
- 238000005086 pumping Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
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- 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
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- Mechanical Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A kind of ball-and-seat analyzing oil well liquid-supplying situation and the analysis method of oil well liquid-supplying situation, including valve body, spool, seal receptacle, spring, spool, seal receptacle, spring is positioned at valve inner, one end of spring is connected with valve body, the other end is connected with spool, seal receptacle is fixed on valve inner, under the action of the spring, realize spool to be in close contact with seal receptacle, also include lighting unit, heat-sink unit, support, control room, vasculum, indicating arm, data storage cell, wireless transmission unit, antenna, imageing sensor, temperature sensor, data processing unit, the collection of image transmitting is realized by above each several part, analyze, calculate, transmission；In-site installation of the present invention is simple, uses contactless property to measure and high-resolution image sensors, gathers data precision high, real-time, can reflect oil well feed flow situation of change within each cycle, and realize oil well condition automatic diagnostic function.
Description
Technical Field
The invention belongs to the technical field of oilfield exploitation monitoring, and particularly relates to a check valve capable of analyzing the liquid supply condition of an oil well and an analysis method of the liquid supply condition of the oil well.
Background
Along with the continuous deep development of an oil field, an early oil well enters a low-yield unstable stage in sequence, and at the present stage, the operation condition of the oil well is mainly reflected through an oil well flow automatic detection device and an oil well indicator diagram, the oil well flow automatic detection device can only measure the liquid production capacity of each well in turn in a time-sharing manner, and the actual liquid supply condition of the oil well is reflected through the liquid production capacity change; the oil well indicator diagram reflects the relation between displacement and load, and indirectly reflects the operation condition of the oil well pump through the change of the load; through the two modes, the working condition change condition of the oil well can be reflected in a staged mode, but the liquid supply change condition of the oil well in each operation period can not be reflected in real time.
Disclosure of Invention
The invention aims to solve the problems that the check valve capable of analyzing the liquid supply condition of the oil well and the method for analyzing the liquid supply condition of the oil well are simple to install, high in data precision and strong in real-time performance, can reflect the liquid supply change condition of the oil well in each period, and realize the automatic diagnosis function of the working condition of the oil well.
A check valve capable of analyzing the liquid supply condition of an oil well comprises a valve body, wherein a valve core capable of moving up and down is arranged in the valve body, one end of the valve core is connected with the valve body through a spring, the other end of the valve core is in close contact with a sealing seat, the check valve further comprises a data processing center, an acquisition box is arranged at the upper part of the valve body, an indicating rod, an image sensor, an illuminating unit and a control chamber are arranged in the acquisition box, the indicating rod penetrates through the valve body and is vertically connected with the valve core, an acquisition point which only moves up and down in the acquisition box is arranged at the top end of the indicating rod, the image sensor is used for acquiring information of the indicating rod and transmitting the information to the control chamber, and an antenna which;
the control room comprises a data processing unit, a data storage unit and a wireless transmission unit, wherein the data storage unit is connected with the data processing unit and used for storing the operation parameters and the acquired data; the wireless transmission unit is connected with the data processing unit and the antenna, and receives and transmits data of the data processing center through the antenna; the image sensor is connected with the data processing unit and used for collecting images of the indicating rod.
Furthermore, a temperature sensor and a heat dissipation unit are arranged in the collection box, the temperature sensor acquires temperature data inside the collection box and transmits the temperature data to the data processing unit, and the data processing unit starts and stops the heat dissipation unit according to a set temperature range.
Further, the collection box is a sealed space.
Further, the collection points are made of reflective materials.
A method for analyzing the liquid supply condition of an oil well comprises the following steps:
1) collecting a motion track of a collection point of one period of a characteristic oil well, drawing a time-displacement curve graph as a standby state, automatically determining the motion period of a check valve from the time-displacement curve graph through a period measurement algorithm, intercepting a motion track curve of a complete period in the motion track of the check valve, and sending motion track curve data to a data processing center through a wireless transmission unit and an antenna to serve as a characteristic comparison curve;
2) through analyzing the motion track curves of a complete period of all characteristic oil wells, a representative track curve is found, the time axis is resampled, the number of sampling points in one period is the same, and a single-flow valve motion track characteristic library is formed after the displacement axis is normalized:
wherein,is a characteristic curve in the characteristic library,is as followsOil well of the type of the feed conditionThe motion track characteristic curve of the strip check valve,is composed ofThe corresponding period of time is set to be,is composed ofThe corresponding maximum displacement is set to be,the total number of types of the liquid supply condition of the oil well,the total number of the motion trajectory characteristic curves of the oil well check valve is determined for each liquid supply condition type;
3) the data processing unit continuously or regularly acquires motion images of acquisition points in the indicating rod through the image sensor, calculates the motion track of the indicating rod through a moving target capturing algorithm, and draws a time-displacement curve graph as a motion track curve of the check valve to be detected;
4) automatically determining the motion period of the check valve to be detected from the motion trail curve of the check valve by a period measurement algorithm, and intercepting the motion trail curve of a complete period in the motion trail of the check valve to be detectedThe data processing center is used for storing the motion trajectory curve data in the data storage unit and transmitting the motion trajectory curve data to the data processing center through the wireless transmission unit and the antenna;
real-time check valve motion trail curve received and sent by data centerResampling the time axis to make the number of sampling points in one period the same as that in the feature library, normalizing the displacement axis, and calculating the motion trail curve of the check valve to be detected in sequenceAnd feature libraryDegree of similarity of medium, most similar characteristic curvesCorresponding toThe liquid supply condition type corresponding to the value is the liquid supply condition type of the oil well:
wherein,for the motion trail curve of the check valve to be detected,is a characteristic curve in the characteristic library,is as followsOil well of the type of the feed conditionThe motion track characteristic curve of the strip check valve,the total number of types of the liquid supply condition of the oil well,the total number of the motion trajectory characteristic curves of the oil well check valve is determined for each liquid supply condition type;
5) and storing the judged oil well liquid supply condition type into a data processing center database so as to facilitate subsequent query and analysis.
Further, the characteristic oil wells include normal oil wells, oil wells with insufficient liquid supply, self-blowing wells and heavy oil wells.
Further, judging the motion track curve of the check valve to be detectedAnd feature libraryThe similarity degree of the middle characteristic curve can be measured by calculating the similarity of two vectors.
Further, the similarity measurement method includes euclidean distance or cosine of included angle.
The invention has the beneficial effects that: the invention has simple field installation, adopts non-contact measurement and a high-resolution image sensor, has high data acquisition precision and strong real-time performance, can reflect the liquid supply change condition of the oil well in each period, and realizes the automatic diagnosis function of the working condition of the oil well.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a control part of the present invention;
FIG. 3 is a schematic diagram of the field application of the apparatus of the present invention;
FIG. 4 is a schematic representation of a measured well under sufficient liquid supply;
FIG. 5 is a schematic representation of a measured severe starvation condition of an oil well according to the present invention;
fig. 6 is a schematic diagram of the invention in the case of sufficient liquid supply to the heavy oil well.
In the figure: the device comprises an indicating rod 1, a lighting unit 2, a collection box 3, an image sensor 4, a control chamber 5, an antenna 6, a spring 7, a support 8, a valve core 9, a heat dissipation unit 10, a sealing seat 11, a valve body 12, a data processing unit 13, a temperature sensor 14, a data processing unit 15, a wireless transmission unit 16 and a data processing center 17.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In order to clearly understand the working principle of the check valve, as shown in fig. 1 and 2, the check valve capable of analyzing the liquid supply condition of the oil well mainly comprises an input end, an output end, a valve body 12, a valve core 9, a sealing seat 11 and a spring 7, wherein liquid can only flow into the valve body 12 from the input end, and because the pressure of the input end is greater than that of the output end, the spring 7 is compressed under the action of pressure, so that the valve core 9 moves upwards along with the spring 7 and is separated from the sealing seat 11, and the flowing liquid flows out from the output end; when no liquid flows into the input end, the valve core 9 is tightly contacted with the sealing seat 11 due to the action of the spring 7, so that the liquid is prevented from flowing backwards from the output end to the input end, the liquid collecting device further comprises an illuminating unit 2, a heat radiating unit 10, a support 8, a control chamber 5, a collecting box 3, an indicating rod 1, a data storage unit 13, a wireless transmission unit 16, an antenna 6, an image sensor 4, a temperature sensor 14, a data processing unit 15, a data storage unit 13, a wireless transmission unit 16 and a data processing center 17, wherein the data processing unit 15 is positioned in the control chamber 5, the illuminating unit 2, the heat radiating unit 10, the support 8, the control chamber 5, the image sensor 4 and the temperature sensor 14 are positioned in the collecting box 3, the antenna 6 is arranged outside the collecting box 3, the collecting box 3 is connected with the valve body 12 through bolts or welding and positioned on the upper part of the valve body 12, the, provide brightness to the interior of the collection bin 3; the heat dissipation unit 10 is connected with the data processing unit 15 to realize heat dissipation inside the collection box 3; the indicating rod 1 passes through the valve body 12 to be connected with the valve core 9 and moves up and down along with the valve core 9; the data storage unit 13 is connected with the data processing unit 15 and stores the operation parameters and the acquired data; the wireless transmission unit 16 is connected with the data processing unit 15 and the antenna 6, and receives and transmits data of the data processing center 17 through the antenna 6; the image sensor 4 is connected with the data processing unit 15, fixed inside the collection box 3 through a bracket 8 and used for collecting images; the temperature sensor 14 is connected with the data processing unit 15 and used for collecting temperature data; the data processing unit 15 is a core control component, and controls data acquisition, storage, analysis, illumination and heat dissipation.
In order to prevent external interference, the collection box 3 is a closed space, the illumination unit 2, the heat dissipation unit 10, the temperature sensor 14, the image sensor 4 and the control chamber 5 are installed in the collection box, the illumination unit 2 is installed at the top of the collection box 3 and is positioned between the indicating rod 1 and the image sensor 4, so that better brightness can be obtained, the heat dissipation unit 10 is installed at the bottom of the collection box 3, the data processing unit 15 acquires temperature data inside the collection box 3 through the temperature sensor 14, the heat dissipation unit 10 is started and stopped to work according to a set temperature range so as to provide a proper temperature range and ensure that other units inside the image sensor 4 normally work, the indicating rod 1 simultaneously penetrates through the collection box 3, the valve body 12 and the spring 7 to be connected with the valve core 9 and follows the valve core 9 to do up and down reciprocating motion inside the valve body 12 and the collection box 3, so as to facilitate collection by, the top of the indicating rod 1 is coated with a reflective material, and in addition, the top of the indicating rod 1 only reciprocates up and down inside the collecting box 3. The data processing unit 15 collects the moving image of the indication rod 1 through the image sensor 4, analyzes and calculates the motion track of the indication rod 1 through the existing image recognition algorithm, draws a time-motion track curve graph, stores the analyzed and calculated time-motion track curve graph in the data storage unit 16, and sends out the data through the wireless transmission unit 16 and the antenna 6.
As shown in fig. 3, the check valve is a necessary device for each oil well, and the check valve capable of analyzing the liquid supply condition of the oil well is installed on an oil pipeline of a wellhead, and the working principle of the check valve is that when the pumping unit extracts liquid quantity in an upstroke, the pressure in the oil pipeline is increased, so that the valve core 9 of the check valve is opened, and liquid flows into the oil pipeline from the oil pipeline through the valve body 12; in the down stroke process of the oil pumping unit, the pressure in the oil pipe is reduced, the valve core 9 of the check valve is closed under the action of the spring 7, and liquid in the oil pipeline is prevented from flowing back into the oil pipe through the valve body 12. At present, in the existing monitoring oil well working equipment, the opening and closing of a valve core 9 of a check valve are not monitored, and aiming at the problem, the operation track of an indicating rod 1 is monitored in real time by an image sensor 4, the operation track of the valve core 9 in the check valve is reflected by the indicating rod 1, the liquid outlet condition of each oil well in each period is mastered, and the production operation condition of the oil well is conveniently and finely mastered.
A method for analyzing the liquid supply condition of an oil well comprises the steps of obtaining the motion track of a check valve indicating rod 1 through an image sensor 4, comparing the motion track with the motion track in a feature library to determine the liquid supply condition of the current oil well, wherein the feature library comprises the motion tracks of check valve indicating rods of a normal oil well, an oil well with insufficient liquid supply, a self-blowing well and a heavy oil well, and the motion tracks of the check valve indicating rods can be added and deleted according to actual conditions.
Fig. 4, 5 and 6 are graphs of time-motion trajectory of the single flow valve indicating rod 1 collected by the image sensor 4 in practical application. FIG. 4 is a graph of time and motion trajectory for sufficient liquid supply to an oil well, in which point 1 represents that a valve element 9 of a check valve is in a closed state, liquid gradually enters a valve body 12 along with an oil pumping unit during an upstroke of liquid extraction, the valve element 9 is gradually opened along with the increase of pressure in an oil pipe, an indicating rod 1 moves along with the valve element 9, an image sensor 4 captures the motion of the indicating rod 1 in real time and transmits the captured image to a data processing unit 15 in real time, the data processing unit 15 identifies and analyzes the motion displacement of the indicating rod 1 according to a specific algorithm, the valve element 9 is completely opened when the valve element 9 reaches point 2, the valve element 9 is kept at the position during the upstroke of the oil pumping unit, the position is from point 2 to point 3 and is a horizontal line, the oil pumping unit starts to enter a downstroke from point 3, and liquid extraction is stopped, along with the pressure reduction of the oil pipe, the valve core 9 is gradually closed under the action of the spring, when the pressure reaches 4 points, the valve core 9 is completely contacted with the sealing seat 11 to separate the oil pipe from the oil pipeline and prevent liquid in the oil pipeline from flowing back into the oil pipe, wherein the connecting lines between 1 and 2, and between 3 and 4 can be different according to the stroke frequency and the liquid supply condition of the oil pumping unit, and the oil pumping unit enters the liquid extraction process again from 5 points and works repeatedly according to the process, so that the time and motion track curve chart of drawing can also have periodic changes. Fig. 5 shows a schematic diagram of a severe insufficient liquid supply situation of an oil well, when the valve core 9 is just fully opened, namely reaching 2 points, the pumping unit enters a downstroke to stop extracting liquid, starting from 3 points, the valve core 9 is gradually closed, and when reaching 4 points, the pumping unit is completely closed. Fig. 7 reflects a change of an operation cycle under a sufficient liquid supply condition of a heavy oil well, which causes a decrease of the fluidity of the liquid due to a higher viscosity of the liquid, resulting in a delay of the movement of the valve element 9, for example, a process change from 1 point to 2 points in fig. 6, and another significant change is that, during a down stroke of the pumping unit, due to a higher viscosity of the liquid and a poor fluidity, the automatic closing process of the valve element 9 under the action of the spring 7 is slow, i.e., a process from 4 points to 5 points in fig. 6, which is a large difference from a well with a sufficient liquid supply to the oil well, and the data collected above is transmitted to the data processing center 17 through the wireless transmission unit 16 under the control of the data processing unit 15, for browsing, querying and analyzing. The time and motion trail curve graph can actually reflect the change condition of the liquid extraction amount of the oil pumping unit in each period, and theoretical basis is provided for further mastering the working condition of the oil well.
And (3) incorporating the time-motion track curve diagrams of fig. 4, fig. 5 and fig. 6 into the characteristic library, directly judging the working condition of the oil well when similar curve diagrams are acquired again, incorporating the motion tracks of the check valve indicating rod 1 of the normal oil well, the oil well with insufficient liquid supply, the self-blowing well and the heavy oil well into the characteristic library in order to perfect the characteristic library, incorporating the motion tracks of the check valve indicating rod 1 of the oil well under other working conditions into the characteristic library, and deleting the motion tracks of the existing type of the indicating rod 1 in the characteristic library, so that the characteristic library covers various oil well working condition conditions, and the automatic diagnosis function of the oil well working condition is realized.
The method comprises the following specific steps:
1) the method comprises the steps of respectively selecting oil wells with liquid supply conditions such as a part of normal oil wells, oil wells with insufficient liquid supply, self-blowing wells, heavy oil wells and the like as characteristic oil wells, continuously obtaining the motion tracks of the check valve indicating rod 1 of the part of the characteristic oil wells for a period of time by using the device, obtaining motion images of collection points in the indicating rod 1 by the data processing unit 15 through the image sensor 4, calculating the motion tracks of the indicating rod 1 through a moving target capturing algorithm, and drawing a time-displacement curve graph as a check valve motion track curve.
2) The motion period of the check valve is automatically determined from the motion trail curve of the check valve through a period measurement algorithm, the motion trail curve of a complete period in the motion trail of the check valve is intercepted, and the data of the motion trail curve is sent to the data processing center 17 through the wireless transmission unit 16 and the antenna 6.
3) Through analyzing the motion track curves of a complete period of all characteristic oil wells, a representative track curve is found, the time axis is resampled, the number of sampling points in one period is the same, and a single-flow valve motion track characteristic library is formed after the displacement axis is normalized:
whereinIs as followsOil well of the type of the feed conditionThe motion track characteristic curve of the strip check valve,is composed ofThe corresponding period of time is set to be,is composed ofThe corresponding maximum displacement is set to be,the total number of types of the liquid supply condition of the oil well,and (4) the total number of the motion trajectory characteristic curves of the oil well check valve for each liquid supply condition type.
4) The device is installed on an oil well to be tested, real-time data are continuously or regularly acquired, the data processing unit 15 acquires moving images of acquisition points in the indicating rod 1 through the image sensor 4, the motion track of the indicating rod 1 is calculated through a moving target capturing algorithm, and a time-displacement curve graph is drawn to serve as a motion track curve of the check valve to be tested.
5) Automatically determining the motion period of the check valve from the motion trail curve of the check valve by a period measurement algorithm, and intercepting the motion trail curve to be measured of a complete period in the motion trail of the check valve. Stored in the data storage unit 13 of the apparatus, and transmits the motion trajectory curve data to the data processing center 17 through the wireless transmission unit 16 and the antenna 6.
6) The data processing center 17 receives the motion trail curve of the check valve sent by the check valve device to be detectedAnd resampling the time axis to ensure that the number of sampling points in one period is the same as that in the feature library, and normalizing the displacement axis. Sequentially calculating the motion trail curve of the check valve to be testedAnd feature libraryDegree of similarity of medium, most similar characteristic curvesCorresponding toThe liquid supply condition type corresponding to the value is the liquid supply condition type of the oil well.
Judging the motion trail curve of the check valve to be testedAnd feature libraryThe similarity of the medium characteristic curves can be measured by calculating similarity measures such as Euclidean distance or cosine of an included angle of two vectors, but is not limited to the two methods.
7) And storing the judged oil well liquid supply condition type into a data processing center (17) database so as to facilitate subsequent query and analysis.
Claims (8)
1. A check valve capable of analyzing the liquid supply condition of an oil well comprises a valve body, wherein a valve core capable of moving up and down is arranged in the valve body, one end of the valve core is connected with the valve body through a spring, and the other end of the valve core is in close contact with a sealing seat;
the control room comprises a data processing unit, a data storage unit and a wireless transmission unit, wherein the data storage unit is connected with the data processing unit and used for storing the operation parameters and the acquired data; the wireless transmission unit is connected with the data processing unit and the antenna and is communicated with the data processing center through the antenna; the image sensor is connected with the data processing unit and used for collecting images of the indicating rod.
2. The check valve capable of analyzing the liquid supply condition of the oil well as claimed in claim 1, wherein a temperature sensor and a heat dissipation unit are arranged in the collection box, the temperature sensor acquires temperature data inside the collection box and transmits the temperature data to the data processing unit, and the data processing unit starts and stops the heat dissipation unit according to a set temperature range.
3. The check valve capable of analyzing the fluid supply condition of an oil well as claimed in claim 1, wherein said collection box is a sealed space.
4. The check valve capable of analyzing the fluid supply condition of an oil well as claimed in claim 1, wherein the collection point is made of a reflective material.
5. A method for analyzing well fluid supply using a check valve capable of analyzing well fluid supply, comprising the steps of:
1) collecting a motion track of a collection point of one period of a characteristic oil well, drawing a time-displacement curve graph as a standby state, automatically determining the motion period of a check valve from the time-displacement curve graph through a period measurement algorithm, intercepting a motion track curve of a complete period in the motion track of the check valve, and sending motion track curve data to a data processing center through a wireless transmission unit and an antenna to serve as a characteristic comparison curve;
2) through analyzing the motion track curves of a complete period of all characteristic oil wells, a representative track curve is found, the time axis is resampled, the number of sampling points in one period is the same, and a single-flow valve motion track characteristic library is formed after the displacement axis is normalized:
wherein,is a characteristic curve in the characteristic library,is as followsOil well of the type of the feed conditionThe motion track characteristic curve of the strip check valve,is composed ofThe corresponding period of time is set to be,is composed ofThe corresponding maximum displacement is set to be,the total number of types of the liquid supply condition of the oil well,the total number of the motion trajectory characteristic curves of the oil well check valve is determined for each liquid supply condition type;
3) the data processing unit continuously or regularly acquires motion images of acquisition points in the indicating rod through the image sensor, calculates the motion track of the indicating rod through a moving target capturing algorithm, and draws a time-displacement curve graph as a motion track curve of the check valve to be detected;
4) automatically determining the motion period of the check valve to be detected from the motion trail curve of the check valve by a period measurement algorithm, and intercepting the motion trail curve of a complete period in the motion trail of the check valve to be detectedThe data processing center is used for storing the motion trajectory curve data in the data storage unit and transmitting the motion trajectory curve data to the data processing center through the wireless transmission unit and the antenna;
the data processing center receives the transmitted real-time check valve motion trail curveResampling the time axis to make the number of sampling points in one period the same as that in the feature library, normalizing the displacement axis, and calculating the motion trail curve of the check valve to be detected in sequenceAnd feature libraryDegree of similarity of medium, most similar characteristic curvesCorresponding toThe liquid supply condition type corresponding to the value is the liquid supply condition type of the oil well:
wherein,for the motion trail curve of the check valve to be detected,is a characteristic curve in the characteristic library,is as followsOil well of the type of the feed conditionThe motion track characteristic curve of the strip check valve,the total number of types of the liquid supply condition of the oil well,the total number of the motion trajectory characteristic curves of the oil well check valve is determined for each liquid supply condition type;
5) and storing the judged oil well liquid supply condition type into a data processing center database so as to facilitate subsequent query and analysis.
6. The method of analyzing well feed conditions using a check valve capable of analyzing well feed conditions of claim 5, wherein the characteristic wells comprise normal wells, starved wells, open jet wells, heavy oil wells.
7. The method of claim 5The method for analyzing the liquid supply condition of the oil well of the check valve for analyzing the liquid supply condition of the oil well is characterized by judging the motion trail curve of the check valve to be detectedAnd feature libraryThe similarity degree of the middle characteristic curve can be measured by calculating the similarity of two vectors.
8. The method of claim 7, wherein the similarity measure comprises the cosine of the Euclidean distance or angle.
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|---|---|---|---|
| CN201610648578.7A CN106247000B (en) | 2016-08-09 | 2016-08-09 | A kind of analysis method of the ball-and-seat for analyzing oil well liquid-supplying situation and oil well liquid-supplying situation |
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| CN201610648578.7A CN106247000B (en) | 2016-08-09 | 2016-08-09 | A kind of analysis method of the ball-and-seat for analyzing oil well liquid-supplying situation and oil well liquid-supplying situation |
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| CN106247000B CN106247000B (en) | 2018-11-02 |
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Cited By (6)
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| CN108253190A (en) * | 2018-03-27 | 2018-07-06 | 王艳霞 | A kind of device for detecting check-valves working condition |
| CN108331576A (en) * | 2018-02-05 | 2018-07-27 | 王艳霞 | A kind of one-way flow monitoring device |
| CN108415852A (en) * | 2018-03-01 | 2018-08-17 | 曲阜师范大学 | A kind of data access method of flash storage |
| CN110246157A (en) * | 2019-06-21 | 2019-09-17 | 大庆安瑞达科技开发有限公司 | Oil gas field equipment production status judgement system and method based on big data monitoring |
| CN110593850A (en) * | 2019-08-28 | 2019-12-20 | 山东天工石油装备有限公司 | Oil well monitoring equipment and method |
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| CN113220771B (en) * | 2021-05-10 | 2022-11-08 | 西安热工研究院有限公司 | Method for automatically acquiring operation condition based on historical data of power plant |
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