CN103266880B - A kind of oil well load measurement method - Google Patents
A kind of oil well load measurement method Download PDFInfo
- Publication number
- CN103266880B CN103266880B CN201310182266.8A CN201310182266A CN103266880B CN 103266880 B CN103266880 B CN 103266880B CN 201310182266 A CN201310182266 A CN 201310182266A CN 103266880 B CN103266880 B CN 103266880B
- Authority
- CN
- China
- Prior art keywords
- load
- graph
- electric power
- information
- processing device
- 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.)
- Active
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 27
- 238000000691 measurement method Methods 0.000 title abstract 2
- 238000012545 processing Methods 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims abstract description 39
- 238000005086 pumping Methods 0.000 claims description 45
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 27
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Control Of Electric Motors In General (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of oil well load measurement method, it is applied in oil pumper, described oil pumper includes: motor, electrical power harvester, machine load sensing device, processing means, described measuring method includes: form electric power curves figure according to described first electric power information and described second electric power information；The first curve of load figure is formed according to described first load information and described second load information；Calculate parameter according to first and described electric power curves figure is converted to the second curve of load figure；When the goodness of fit of described first curve of load figure and described second curve of load figure reaches predetermined threshold, using described second curve of load figure as the service load curve chart of described oil pumper.The present invention is by being converted to load operation curve chart by the electric power information of oil pumper, it is achieved that be required for the technique effect of machine load sensing device in oil pumper work process, further up to the technique effect improving oil well automatization, engineering reliability is high.
Description
Technical Field
The invention relates to the technical field of oil exploitation, in particular to an oil well load measuring method.
Background
At present, in China, an underground oil pump is driven to work mainly through the up-and-down lifting action of a beam pumping unit, so that the purpose of pumping underground crude oil is achieved, however, due to factors such as underground corrosion, sand and stone, liquid supply capacity and the like, the normal work of the oil pump is often influenced, and the yield of an oil well is influenced. The common method is to judge the working state of the oil pump by measuring the load diagram of the oil pumping unit.
However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the inventors of the present application find that the above-mentioned technology has at least the following technical problems:
the load sensor is the main equipment for measuring the oil well load indicator diagram at present, and the load sensor often causes poor working stability, high damage rate and higher manufacturing cost due to the problems of equipment materials, environment and the like in the working process, which all bring huge bottlenecks to the popularization of the oil well automation technology.
Disclosure of Invention
The embodiment of the invention aims to provide an oil well load measuring method, which solves the technical problems of poor working stability, high damage rate and high manufacturing cost of an oil pumping unit adopting a load sensor in the prior art, and achieves the technical effects of reducing the use frequency of the load sensor, improving the automation of an oil well and having high technical reliability.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
an oil well load measuring method is applied to an oil pumping unit and is characterized in that: the oil pumping unit comprises: an electric motor for providing power; the electric power acquisition device is connected with the motor and is used for acquiring electric power information of the motor; the load sensing device is used for collecting load information of the oil pumping unit; the processing device is connected with the electric power acquisition device and the load sensing device and is used for acquiring and processing the electric power information and the load information; wherein the measuring method comprises the following steps: the processing device obtains first electric power information and first load information at a first time point; the processing device obtains second electric power information and second load information at a second time point; the processing device forming an electric power graph from the first electric power information and the second electric power information; the processing device forms a first load graph according to the first load information and the second load information; the processing device converts the electrical power profile into a second load profile according to a first calculated parameter; the processing device comparing the first load profile and the second load profile; and when the goodness of fit of the first load graph and the second load graph reaches a preset threshold value, the processing device takes the second load graph as a working load graph of the oil pumping unit.
Further, the method further comprises: when the goodness of fit of the first load graph and the second load graph does not reach a preset threshold value, the processing device converts the electric power graph into a third load graph according to a second calculation parameter; the processing device compares the first load profile and a third load profile; and when the goodness of fit of the first load curve graph and the third load curve graph reaches a preset threshold value, the processing device takes the third load curve graph as a working load curve graph of the oil pumping unit.
Further, the pumping unit further comprises: the position acquisition device is connected with the processing device and is used for acquiring the position information of the pumping unit;
further, the method further comprises: the processing device obtains first position information of a first position; the processing device obtains a first work load curve graph according to the first position information; the processing device obtains second position information of a second position, wherein a distance value between the first position and the second position is smaller than a preset threshold value; the processing device obtains a second working load curve graph according to the second position information; and the processing device corrects the work load graph of the first position or the second position according to the distance value, the first work load graph and the second work load graph.
Further, the method further comprises: when the goodness of fit of the first load graph and the second load graph reaches a predetermined threshold, the processing device further comprises, after regarding the second load graph as a working load graph of the pumping unit: the load sensing device is turned off.
Further, the processing device comprises: the acquisition unit is connected with the electric power acquisition device and the load sensing device and is used for acquiring the electric power information and the load information; the analysis unit is connected with the collection unit and is used for obtaining the electric power curve graph and the load curve graph according to the electric power information and the load information; a conversion unit connected with the analysis unit, the conversion unit being used for converting the electric power curve graph into a calculated load curve graph.
Further, the pumping unit further comprises: and the human-computer interaction device is connected with the processing device and is used for outputting and inputting working parameters of the oil pumping unit.
Compared with the prior art, the invention has the beneficial effects that:
according to the oil well load measuring method provided by the embodiment of the invention, the electric power information of the oil pumping unit is converted into the load working curve chart, so that the technical effect that a load sensing device is not needed in the working process of the oil pumping unit is realized, and the technical effects of improving the automation of an oil well and having high technical reliability are further achieved.
Drawings
Fig. 1 is a schematic view of the working principle of an oil pumping unit in the embodiment of the invention;
FIG. 2 is a flow chart of a method of measuring well load in an embodiment of the present invention;
FIG. 3 is a flow chart of yet another method of measuring well load in an embodiment of the present invention.
Detailed Description
According to the oil well load measuring method provided by the embodiment of the invention, the electric power information of the oil pumping unit is converted into the load working curve chart, so that the technical effect that a load sensing device is not needed in the working process of the oil pumping unit is realized, and the technical effects of improving the automation of an oil well and having high technical reliability are further achieved.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
As shown in fig. 1, the embodiment of the invention discloses an oil well load measuring method, which is applied to an oil pumping unit, wherein the oil pumping unit comprises: the device comprises a motor 1, an electric power acquisition device 2, a processing device 3, a position acquisition device 4, a load sensing device 5 and a man-machine interaction device 6. Wherein,
an electric motor 1 for providing power;
specifically, the motor provided by the embodiment of the invention is a conventional motor, and the motor equipment provided by the power supply meeting the work of the pumping well is protected by the embodiment of the invention.
The electric power acquisition device 2 is connected with the motor 1 and is used for acquiring electric power information of the motor;
specifically, the signal collecting line of the electric power collecting device 2 is connected to the power supply terminal of the motor 1 to collect input and output power of the motor 1.
The load sensing device 5 is used for collecting the load information of the oil pumping unit 5;
specifically, the load sensing device 5 may be a load sensor conventionally used in the art. Embodiments of the present invention are not particularly limited to a particular type of load sensor.
The processing device 3 is connected with the electric power acquisition device 2 and the load sensing device 5, and is used for acquiring and processing the electric power information and the load information;
specifically, the signal output lines of the electric power collection device 2 and the load sensing device 5 are respectively connected to the signal input end of the processing device 3, so as to further obtain the electric power information of the motor, such as input power, output power and the like, collected by the electric power collection device 2, and obtain the load information of the pumping unit collected by the load sensing device 5.
Further, the processing device 3 may include:
the acquisition unit 31, the acquisition unit 31 is connected with the electric power acquisition device 2 and the load sensing device 5, and the acquisition unit 31 is used for acquiring the electric power information and the load information;
an analyzing unit 32, wherein the analyzing unit 32 is connected to the collecting unit 31, and the analyzing unit 32 is configured to obtain the electric power curve graph and the load curve graph according to the electric power information and the load information;
a conversion unit 33, wherein the conversion unit 33 is connected with the analysis unit 32, and the conversion unit 33 is used for converting the electric power curve graph into a calculated load curve graph.
The position acquisition device 4 is connected with the processing device 3, and the position acquisition device 4 is used for acquiring the position information of the pumping unit;
specifically, the position acquisition device 4 is connected with a signal input end of the processing device 3 through a signal output line, and sends the position information of the pumping unit to the processing device 3.
And the human-computer interaction device 6 is connected with the processing device 3, and the human-computer interaction device 6 is used for outputting and inputting working parameters of the oil pumping unit.
Specifically, the human-computer interaction device 6 may be a conventional display, keyboard, mouse, or other input-output device, and is mainly used for displaying the operating parameters of the pumping unit and sending the operator's instructions to the processing device 3 to execute specific commands. Specifically, the working parameter may be a proportional parameter, an amplitude parameter, a goodness of fit, or the like.
As shown in fig. 2, a method for measuring a load of an oil well according to an embodiment of the present invention includes:
step 110: the processing device obtains first electric power information and first load information at a first time point;
step 120: the processing device obtains second electric power information and second load information at a second time point;
step 130: the processing device forming an electric power graph from the first electric power information and the second electric power information;
step 140: the processing device forms a first load graph according to the first load information and the second load information;
specifically, the embodiment of the present invention is not limited to providing the electric power information and the load information values at two time points, and in order to obtain the electric power curve and the first load curve better, more time points may be set to draw a more perfect electric power curve and a more perfect first load curve. That is, the above steps are finally to establish a continuous electric power profile and a continuous first load profile with the time axis as the abscissa. Further, it is common technical means in the art to draw a continuous graph by a plurality of continuous points, and the embodiments of the present invention are not specifically explained and limited.
Step 150: the processing device converts the electrical power profile into a second load profile according to a first calculated parameter;
specifically, the processing device processes, analyzes and calculates the electric power information and the load information to obtain corresponding parameters between the electric power curve graph and the first load curve graph, and converts the electric power curve graph into a second load curve graph according to the corresponding parameters.
Step 160: the processing device comparing the first load profile and the second load profile;
specifically, since the first load graph is the actual load information obtained from the load sensing device and the second load graph is the load graph converted from the electric power graph, there is certainly an error between the two types of load graphs, and therefore, it is possible to judge whether the converted load graph satisfies the requirement from the actual load graph.
Step 170: when the goodness of fit of the first load graph and the second load graph reaches a preset threshold value, the processing device takes the second load graph as a working load graph of the oil pumping unit;
specifically, the step determines whether the second load graph is used as the working load graph of the pumping unit by comparing whether the goodness of fit of the first load graph and the second load graph reaches a predetermined threshold value. As a preferred embodiment of the present invention, the predetermined threshold may be a goodness of fit higher than 90%.
Step 180: when the goodness of fit of the first load graph and the second load graph does not reach a preset threshold value, the processing device converts the electric power graph into a third load graph according to a second calculation parameter;
step 190: the processing device compares the first load profile and a third load profile;
step 200: and when the goodness of fit of the first load curve graph and the third load curve graph reaches a preset threshold value, the processing device takes the third load curve graph as a working load curve graph of the oil pumping unit.
Specifically, when the goodness of fit of the first load graph and the second load graph does not reach a predetermined threshold, such as 90%, the calculation parameters may be further corrected, and the electric power graph may be converted into a third load graph according to the corrected second calculation parameters. That is, the converted load graph can meet the final real requirement by continuously correcting the calculation parameters in the step.
Further, the parameter adjustment of this step may be automatic adjustment by the processor according to information such as a difference of goodness of fit, or may be manual correction by an operator according to the human-computer interaction device 6.
As shown in fig. 3, in order to obtain the working load graph more accurately, the method for measuring the oil well load according to the embodiment of the present invention further includes:
step 310: the processing device obtains first position information of a first position;
step 320: the processing device obtains a first work load curve graph according to the first position information;
step 330: the processing device obtains second position information of a second position, wherein a distance value between the first position and the second position is smaller than a preset threshold value;
step 340: the processing device obtains a second working load curve graph according to the second position information;
step 350: and the processing device corrects the work load graph of the first position or the second position according to the distance value, the first work load graph and the second work load graph.
Specifically, the embodiment of the invention further provides the acquisition of a work load curve chart for adjusting a certain position point according to the position information. For example, the processing device calculates the corresponding relationship between the load information and the electric power information at the same position and the same time according to the electric power information and the load data information, and simultaneously obtains the corresponding relationship between the load and the power at each position point of the well according to the integral effect of N points before and after a certain position point, thereby obtaining a more accurate working load curve graph.
Further, the method for measuring oil well load according to the embodiment of the present invention further includes, when the goodness of fit of the first load graph and the second load graph reaches a predetermined threshold, after the processing device uses the second load graph as a working load graph of the pumping unit: the load sensing device is turned off.
Specifically, the load sensing device is only required to be started in the testing stage, and after the working load curve graph is obtained, the working load curve graph is used as a means for monitoring the working state of the oil pumping unit, so that the aims of eliminating an oil well load sensor in the actual working process and improving the reliability of the oil well automation technology are fulfilled.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
according to the oil well load measuring method provided by the embodiment of the invention, the electric power information of the oil pumping unit is converted into the load working curve chart, so that the technical effect that a load sensing device is not needed in the working process of the oil pumping unit is realized, and the technical effects of improving the automation of an oil well and having high technical reliability are further achieved.
Meanwhile, the oil well load measuring method provided by the invention fundamentally solves the problems of high cost, high distortion rate, poor stability of the load sensing device, high cost and the like of load curve graph acquisition. The method has high graph goodness of fit of the load curve chart, is suitable for judging the fullness of the oil pump and diagnosing common faults of the oil well, and has great significance for popularization and application of the oil well automation technology.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An oil well load measuring method is applied to an oil pumping unit and is characterized in that: the oil pumping unit comprises:
an electric motor for providing power;
the electric power acquisition device is connected with the motor and is used for acquiring electric power information of the motor;
the load sensing device is used for collecting load information of the oil pumping unit;
the processing device is connected with the electric power acquisition device and the load sensing device and is used for acquiring and processing the electric power information and the load information;
wherein the measuring method comprises the following steps:
the processing device obtains first electric power information and first load information at a first time point;
the processing device obtains second electric power information and second load information at a second time point;
the processing device forming an electric power graph from the first electric power information and the second electric power information;
the processing device forms a first load graph according to the first load information and the second load information;
the processing device converts the electrical power profile into a second load profile according to a first calculated parameter;
the processing device comparing the first load profile and the second load profile;
when the goodness of fit of the first load graph and the second load graph reaches a preset threshold value, the processing device takes the second load graph as a working load graph of the oil pumping unit;
the method further comprises the following steps:
when the goodness of fit of the first load graph and the second load graph does not reach a preset threshold value, the processing device converts the electric power graph into a third load graph according to a second calculation parameter;
the processing device compares the first load profile and a third load profile;
when the goodness of fit of the first load curve graph and the third load curve graph reaches a preset threshold value, the processing device takes the third load curve graph as a working load curve graph of the oil pumping unit;
the beam-pumping unit still includes:
the position acquisition device is connected with the processing device and is used for acquiring the position information of the pumping unit;
the method further comprises the following steps:
and adjusting the work load curve chart of a certain position point according to the position information.
2. The method of claim 1, wherein the method further comprises: when the goodness of fit of the first load graph and the second load graph reaches a predetermined threshold, the processing device further comprises, after regarding the second load graph as a working load graph of the pumping unit:
the load sensing device is turned off.
3. The method of claim 1, wherein the processing means comprises:
the acquisition unit is connected with the electric power acquisition device and the load sensing device and is used for acquiring the electric power information and the load information;
the analysis unit is connected with the acquisition unit and is used for obtaining the electric power curve graph and the load curve graph according to the electric power information and the load information;
a conversion unit connected with the analysis unit, the conversion unit being used for converting the electric power curve graph into a calculated load curve graph.
4. The method of claim 1, wherein the pumping unit further comprises:
and the human-computer interaction device is connected with the processing device and is used for outputting and inputting working parameters of the oil pumping unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310182266.8A CN103266880B (en) | 2013-05-16 | 2013-05-16 | A kind of oil well load measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310182266.8A CN103266880B (en) | 2013-05-16 | 2013-05-16 | A kind of oil well load measurement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103266880A CN103266880A (en) | 2013-08-28 |
| CN103266880B true CN103266880B (en) | 2016-12-28 |
Family
ID=49010534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310182266.8A Active CN103266880B (en) | 2013-05-16 | 2013-05-16 | A kind of oil well load measurement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103266880B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322058B (en) * | 2018-12-14 | 2023-05-26 | 中国石油天然气股份有限公司 | Method and device for determining working condition of oil pumping well based on electric parameter curve |
| CN110685650A (en) * | 2019-09-26 | 2020-01-14 | 中国石油天然气股份有限公司 | Intelligent intermittent pumping control system and method for oil field beam pumping unit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5182946A (en) * | 1991-11-08 | 1993-02-02 | Amerada Hess Corporation | Portable well analyzer |
| CN101105124A (en) * | 2006-07-11 | 2008-01-16 | 刘克文 | Oil extraction indicator and using method thereof |
| CN201162664Y (en) * | 2008-01-31 | 2008-12-10 | 淄博亚华电子有限公司 | Measuring apparatus for oil field oil pumping machine indicating diagram without load sensor |
| CN101525994B (en) * | 2009-04-13 | 2013-08-28 | 北京龙鼎源科技有限公司 | Measuring and monitoring system for oil wellhead |
| CN102539043A (en) * | 2010-12-07 | 2012-07-04 | 北京博奥泰克石油技术有限公司 | Method and system for carrying out comprehensive analysis on working conditions of oil pumping unit |
| CN102331320B (en) * | 2011-06-20 | 2013-04-10 | 沈阳理工大学 | Beam pumping unit indicator diagram soft measurement method based on neural network |
-
2013
- 2013-05-16 CN CN201310182266.8A patent/CN103266880B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103266880A (en) | 2013-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106682815B (en) | Monitoring system and monitoring method for pumping well | |
| CN110614539A (en) | Online real-time monitoring and analyzing method for state of spindle of numerical control machine tool | |
| CN103557837B (en) | On-line tower inclination monitoring method capable of correcting installation error of sensor | |
| CN103266880B (en) | A kind of oil well load measurement method | |
| CN110749532A (en) | Hydraulic engineering seepage intelligent monitoring system and method | |
| CN212567494U (en) | Point switch control circuit monitoring and analyzing system | |
| CN113432768A (en) | Iron roughneck and torque measurement and control method | |
| CN106321071B (en) | Production parameter optimization method for oil pumping unit | |
| CN113155443B (en) | Lubricating oil state monitoring and fault diagnosis system and method for reducer of coal mining machine | |
| CN205445585U (en) | Based on sucker rod electric work picture monitor | |
| CN110687396B (en) | Method and system for improving cable fault measurement precision | |
| CN113309762A (en) | Hydraulic oil cleanliness monitoring method, device and monitoring equipment | |
| CN100573076C (en) | A kind of crossbeam type oil pumping machine feed sensor calibration system and scaling method thereof | |
| CN104879294B (en) | A kind of water pump transient signal analytical equipment and method | |
| CN201184835Y (en) | Calibration system for load sensor of crossbeam type oil pumping machine | |
| CN108021725B (en) | Method for determining reversing point position of oil pumping unit in electric diagram data | |
| CN203394506U (en) | Integrated portable tester of oil pumping unit | |
| CN101957402A (en) | System and method for testing instantaneous current | |
| CN105258966A (en) | Hoisting device real-time safe operation index determining method based on crack expansion information | |
| CN115685908A (en) | Electric welding machine welding monitoring method and system based on Internet of things | |
| CN109828146B (en) | Method for judging equipment working condition through equipment electrical parameter AD sampling | |
| CN103909334A (en) | Welding spot quality detection system for medium-frequency resistance welding machine and detection method thereof | |
| CN115526196A (en) | Method for dynamically diagnosing working condition of electric submersible pump on line based on real-time data and model | |
| CN204408010U (en) | The integrated on the spot Gernral Check-up management devices of power station equipment | |
| CN103426491A (en) | Nuclear power plant process parameter reliability processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 834000, Yingbin Road, the Xinjiang Uygur Autonomous Region, Karamay, 69-13-11 Applicant after: Xinjiang Dunhua Petroleum Technology Co.,Ltd. Address before: 834000 Athena garden, 66-60, the Xinjiang Uygur Autonomous Region, Karamay Applicant before: Xinjiang Dunhua Petroleum Technology Co.,Ltd. |
|
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 834000, Yingbin Road, the Xinjiang Uygur Autonomous Region, Karamay, 69-13-11 Applicant after: XINJIANG DUNHUA PETROLEUM TECHNOLOGY CO.,LTD. Address before: 834000, Yingbin Road, the Xinjiang Uygur Autonomous Region, Karamay, 69-13-11 Applicant before: Xinjiang Dunhua Petroleum Technology Co.,Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Oil well load measurement method Effective date of registration: 20181026 Granted publication date: 20161228 Pledgee: Bank of Kunlun Limited by Share Ltd. Karamay branch Pledgor: XINJIANG DUNHUA PETROLEUM TECHNOLOGY CO.,LTD. Registration number: 2018650000004 |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 834000 second floor, No. 77, Nanxin Road, Karamay District, Karamay City, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang Dunhua Green Carbon Technology Co.,Ltd. Address before: No. 69-13-11, Yingbin Avenue, Karamay, Xinjiang Uygur Autonomous Region 834000 Patentee before: XINJIANG DUNHUA PETROLEUM TECHNOLOGY CO.,LTD. |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230802 Granted publication date: 20161228 Pledgee: Bank of Kunlun Limited by Share Ltd. Karamay branch Pledgor: XINJIANG DUNHUA PETROLEUM TECHNOLOGY CO.,LTD. Registration number: 2018650000004 |