CN108278107B - Control system for drilling machine and drilling machine - Google Patents
Control system for drilling machine and drilling machine Download PDFInfo
- Publication number
- CN108278107B CN108278107B CN201711429635.3A CN201711429635A CN108278107B CN 108278107 B CN108278107 B CN 108278107B CN 201711429635 A CN201711429635 A CN 201711429635A CN 108278107 B CN108278107 B CN 108278107B
- Authority
- CN
- China
- Prior art keywords
- control device
- hydraulic pump
- drilling machine
- drilling
- control
- 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
- 238000005553 drilling Methods 0.000 title claims abstract description 72
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
- E21B44/02—Automatic control of the tool feed
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a control system for a drilling machine, which comprises a first control device and a second control device, wherein the input end of the first control device is used for being connected with the output end of a motor of an injection head, the input end of the second control device is connected with the control end of the first control device, the second control device is used for controlling the drilling pressure of the drilling machine, and the output end of the second control device is used for being connected with a cavity of a slant plate capable of controlling a hydraulic pump. A drilling machine comprises the control system for the drilling machine, a hydraulic pump with an inclined disc, a filling head motor and an operating handle, wherein the output end of the hydraulic pump is connected with the input end of the filling head motor, the input end of the hydraulic pump is connected with the output end of the filling head motor, and the inclined disc of the hydraulic pump can be controlled by the operating handle. The control system and the drilling machine in the embodiment of the application can keep the drilling pressure and the bit pressure constant when the lithology of the stratum changes.
Description
Technical Field
The invention relates to the technical field of petroleum and natural gas drilling, in particular to a control system for a drilling machine and the drilling machine.
Background
When the continuous pipe drilling machine is used for drilling, in the conventional drilling process, the output flow of the hydraulic pump is controlled through the injection head handle, so that the drilling speed of the injection head is controlled, the blocking condition is judged by depending on the observation and experience of people on instruments, then the drilling operation is decelerated and stopped, and the possibility of accidents caused by insufficient reaction time and improper operation exists; in the stratum drilling process, due to the change of the drillability of the stratum, the drilling speed is changed frequently, the drilling speed of the injection head needs to be adjusted at any time to ensure that the drilling pressure is basically unchanged, the drilling speed is usually low, the manual adjustment of the handle to achieve the proper drilling speed is inconvenient, the requirement can be met only by multiple times of adjustment, the labor intensity is high, and the accuracy is not enough; in a word, automatic drill feeding cannot be realized, the risk of accidents caused by drill-down blockage exists, the labor intensity of manual operation is high, and the accuracy is not enough.
Disclosure of Invention
The embodiment of the invention provides a control system for a drilling machine and the drilling machine, which can automatically control drilling.
In order to achieve the above object, the present invention provides a control system for a drilling machine, comprising a first control device and a second control device, wherein an input end of the first control device is used for being connected with an output end of a filling head motor, an input end of the second control device is connected with a control end of the first control device, the second control device is used for controlling a drilling down pressure of the drilling machine, and an output end of the second control device is used for being connected with a chamber of a slant plate capable of controlling a hydraulic pump.
Preferably, a third control device is included, an input of the third control device being connected to an output of the second control device, the third control device being adapted to control the pressure at which the output of the second control device inputs fluid to the chamber.
Preferably, the first control means is a sequence valve.
Preferably, the second control device is a remote control overflow valve.
Preferably, the third control means is a relief valve.
Preferably, the input end of the first control device is provided with a first throttling device.
Preferably, the output end of the second control device is provided with a second throttling device.
Preferably, the first control device has at least two operating positions, in a first operating position the input of the first control device is connected to the output of the first control device, and in a second operating position the input of the first control device is disconnected from the output of the first control device.
The embodiment of the application also discloses a drilling machine, include control system, the hydraulic pump that has the slant dish, fill head motor, the operating handle that as above-mentioned drilling machine was used, the output of hydraulic pump with the input of filling head motor is connected, the input of hydraulic pump with the output of filling head motor is connected, the slant dish of hydraulic pump can be controlled to the operating handle.
Preferably, the control system and the operating handle are capable of generating opposing forces on the swashplate.
The control system and the drilling machine in the embodiment of the application can automatically adjust the drilling speed when the lithology of the stratum changes, keep the drilling pressure and the drilling pressure constant, realize automatic drilling feeding, avoid the possibility of accidents caused by insufficient reaction time and misoperation of manual operation, and simultaneously lighten the labor intensity of drilling.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic view of a drilling rig in an embodiment of the invention.
The drawings of the above figures illustrate: 1. a hydraulic pump; 2. an injector head motor; 3. a first throttling device; 4. a first control device; 5. a second control device; 6. a third control device; 7. a second throttling device; 8. a handle is operated.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, the embodiment of the present application discloses a control system for a drilling machine, which includes a first control device 4 and a second control device 5, wherein an input end of the first control device 4 is used for being connected with an output end of a filling head motor 2, an input end of the second control device 5 is connected with a control end of the first control device 4, the second control device 5 is used for controlling a drilling down pressure of the drilling machine, and an output end of the second control device 5 is used for being connected with a chamber capable of controlling a slant plate of a hydraulic pump 1.
Wherein, the drilling machine can also comprise a hydraulic pump 1, a filling head motor 2 and an operating handle 8. Wherein the hydraulic pump 1 has a swash plate. The operating handle 8 can adjust the swash plate of the hydraulic pump 1, that is, adjust the output flow rate of the hydraulic pump 1, based on the operation thereof.
The output end of the hydraulic pump 1 is connected with the input end of the injection head motor 2 through a first pipeline, and the output end of the injection head motor 2 is connected with the input end of the hydraulic pump 1 through a second pipeline, so that a liquid path circulation is formed.
One end of the third line is connected to the second line at a connection point Pa, i.e. to the output of the injector head motor 2. The other end of the third pipeline is connected with the input end of the first control device 4.
The first control device 4 has at least two operating positions, in a first operating position the input of the first control device 4 is connected to the output of the first control device 4, and in a second operating position the input of the first control device 4 is disconnected from the output of the first control device 4.
The input of the second control device 5 is connected to the control of the first control device 4. The second control means 5 is used to control the down-hole pressure of the drilling machine. I.e. when the pressure at the connection point Pa is greater than the set pressure of the remote-control excess-flow valve, the first control means 4 is in the first operating position. When the pressure at the connection point Pa is less than or equal to the set pressure of the remote control relief valve, the first control device 4 is in the second working position.
One end of the fourth pipeline is connected with the output end of the first control device 4, and the other end of the fourth pipeline is connected with a chamber capable of controlling the position of the inclined disc through an X1 port.
Preferably, the first control means 4 is a sequence valve. The second control device 5 is a remote control overflow valve.
And connecting the hydraulic feedback control system to a driving liquid path of the injection head, setting the highest drilling pressure by a sequence valve, and remotely adjusting the drilling pressure by a remote control overflow valve. When the drilling pressure Pa exceeds the set value of the remote control overflow valve, a sequence valve in a feedback loop is opened, pressure oil in a third pipeline enters X1, a part of servo control pressure P2 of the hydraulic pump 1 is counteracted, a swash plate is pushed to swing towards the return stroke (the swing angle is reduced), the output flow of the hydraulic pump 1 is reduced, and the constant drilling pressure is ensured.
When the drilling pressure Pa is lower than the set pressure, a sequence valve in a feedback loop is closed, the pressure P1 of an X1 port is 0, the inclination angle of a pump swash plate is controlled by servo control pressure P2, and the hydraulic pump 1 outputs at the maximum flow rate set by a handle, so that the drilling pressure is ensured to reach the set value.
When drilling, the pressure of the remote control overflow valve is adjusted to obtain the proper drilling speed and drilling pressure. When stratum lithology changes, the speed of drilling down is automatically adjusted, the pressure of drilling down and the drilling pressure are kept constant, automatic bit feeding is realized, the possibility of accidents caused by insufficient reaction time and improper operation of manual operation is avoided, and the labor intensity of a driller is reduced.
Preferably, a third control device 6 is included, an input of the third control device 6 being connected to an output of the second control device 5, the third control device 6 being adapted to control the pressure of the fluid input to the chamber from the output of the second control device 5. The third control means 6 may be a relief valve.
Preferably, a first throttle 3 and a second throttle 7 for adjusting the pressure can be provided on the third line and the fourth line, respectively.
The embodiment of the application also discloses a drilling machine, which comprises the drilling machine system, the injection head motor 2 and the hydraulic pump 1. Preferably, the hydraulic pump 1 is a bidirectional variable plunger pump, and the output flow of the hydraulic pump 1 is adjusted through an electric (or hydraulic) control handle to control the flow direction, so that the drilling machine is controlled to drill up, drill down and drill up and drill down.
Constant weight on bit automatic bit feed example:
when drilling under a certain constant drilling pressure, the working pressure of the injection head motor 2 is remotely adjusted by a remote control overflow valve. When the down-drilling pressure Pa exceeds the set value of the remote control overflow valve, the sequence valve is opened, so that pressure oil communicated with a driving liquid path of the injection head motor 2 enters a chamber of the hydraulic pump 1, which can act on a swash plate, the servo control pressure of the hydraulic pump 1 is respectively changed into (P2-P1), the swash plate swings towards the return stroke (swing angle is reduced), the output flow of the hydraulic pump 1 is reduced, and the constant down-drilling pressure is ensured.
Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.
Unless otherwise indicated, all ranges include the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed subject matter.
Claims (4)
1. A drilling rig, characterized in that the drilling rig comprises:
a control system for a drilling machine, comprising a first control device, a second control device, and a third control device;
a hydraulic pump with a slant plate, a filling head motor and an operating handle;
the input end of the first control device is used for being connected with the output end of an injection head motor, the input end of the second control device is connected with the control end of the first control device, the other input end of the second control device is connected with the output end of the injection head motor, the second control device is used for controlling the drilling pressure of a drilling machine, and the output end of the second control device is connected with a chamber capable of controlling a slant disk of a hydraulic pump; the first control device is provided with at least two working positions, and in the first working position, the input end of the first control device is communicated with the output end of the first control device; when the first control device is in the first working position, the input end of the first control device is connected with the output end of the first control device; the input end of the third control device is connected with the output end of the second control device, and the third control device is used for controlling the pressure of the fluid input from the output end of the second control device to the chamber; the first control device is a sequence valve, the second control device is a remote control overflow valve, and the third control device is an overflow valve; the output end of the hydraulic pump is connected with the input end of the injection head motor, the input end of the hydraulic pump is connected with the output end of the injection head motor, and the operating handle can control the inclined disc of the hydraulic pump so as to adjust the output flow of the hydraulic pump.
2. Drilling machine according to claim 1, characterized in that the input of the first control means is provided with a first throttle means.
3. Drilling machine according to claim 1, characterized in that the output of the second control device is provided with a second throttle device.
4. The drilling machine of claim 1, wherein the control system and the operating handle are capable of generating opposing forces on a swashplate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429635.3A CN108278107B (en) | 2017-12-26 | 2017-12-26 | Control system for drilling machine and drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429635.3A CN108278107B (en) | 2017-12-26 | 2017-12-26 | Control system for drilling machine and drilling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108278107A CN108278107A (en) | 2018-07-13 |
| CN108278107B true CN108278107B (en) | 2022-02-01 |
Family
ID=62802305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711429635.3A Active CN108278107B (en) | 2017-12-26 | 2017-12-26 | Control system for drilling machine and drilling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108278107B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655005A (en) * | 2009-08-04 | 2010-02-24 | 大连交通大学 | Hydraulic system of continuous string coiled tubing unit |
| CN201635716U (en) * | 2010-03-19 | 2010-11-17 | 北京中冶迈克液压有限责任公司 | Continuous pipe injection speed proportional control device |
| CN105696999A (en) * | 2016-01-29 | 2016-06-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Coiled tubing experimental system and method |
| CN106194060A (en) * | 2016-07-20 | 2016-12-07 | 中国石油大学(华东) | A kind of global design of Cabon-fibre continuous sucker rod operating vehicles |
| CN206190239U (en) * | 2016-11-18 | 2017-05-24 | 山东科瑞机械制造有限公司 | Multi -functional fill head control system that brakes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2384214C (en) * | 2001-07-11 | 2007-04-17 | Coiled Tubing Solutions, Inc. | Oil well tubing injection system |
| US6702011B2 (en) * | 2002-04-22 | 2004-03-09 | James B. Crawford | Combined nitrogen treatment system and coiled tubing system in one tractor/trailer apparatus |
-
2017
- 2017-12-26 CN CN201711429635.3A patent/CN108278107B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655005A (en) * | 2009-08-04 | 2010-02-24 | 大连交通大学 | Hydraulic system of continuous string coiled tubing unit |
| CN201635716U (en) * | 2010-03-19 | 2010-11-17 | 北京中冶迈克液压有限责任公司 | Continuous pipe injection speed proportional control device |
| CN105696999A (en) * | 2016-01-29 | 2016-06-22 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Coiled tubing experimental system and method |
| CN106194060A (en) * | 2016-07-20 | 2016-12-07 | 中国石油大学(华东) | A kind of global design of Cabon-fibre continuous sucker rod operating vehicles |
| CN206190239U (en) * | 2016-11-18 | 2017-05-24 | 山东科瑞机械制造有限公司 | Multi -functional fill head control system that brakes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108278107A (en) | 2018-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1632642B1 (en) | Hydraulically operated fluid metering apparatus for use in a subterranean well | |
| US5121802A (en) | Method and arrangement for controlling a rock drilling apparatus | |
| WO2008039411A3 (en) | Coiled tubing injector with a weight on bit circuit | |
| NO342189B1 (en) | Hydraulically actuated control system and method for use in a subterranean well | |
| US20210325915A1 (en) | Pressure regulator for fluid hammer reduction | |
| US4401134A (en) | Pilot valve initiated mud pulse telemetry system | |
| US7264059B2 (en) | Method and device for pressure controlled sequential operation | |
| US20210215009A1 (en) | Control system for a well drilling platform with remote access | |
| CN114109308B (en) | Intelligent well sliding sleeve target horizon selection hydraulic control system and method | |
| CN108278107B (en) | Control system for drilling machine and drilling machine | |
| CA2905218A1 (en) | Enhanced oil production using control of well casing gas pressure | |
| CN203770258U (en) | Hydraulic system for stepless regulation of rotation torque of horizontal directional drilling machine | |
| US8146681B2 (en) | Drilling tool and drilling method | |
| WO2017205670A1 (en) | Multi-stage flow control assemblies | |
| CN203453161U (en) | Speed adjusting device for slurry system of drilling machine | |
| US20140290964A1 (en) | Pressure control in drilling operations with offset applied in response to predetermined conditions | |
| CN104234994A (en) | High-precision proportional regulating pump | |
| CN204099326U (en) | A kind of one-way balance valve and mast oil cylinder control system and rotary drilling rig | |
| CN204061130U (en) | Highi degree of accuracy proportion adjustment pump | |
| US10954733B2 (en) | Single-line control system for a well tool | |
| CN110425917B (en) | Pressure sensing trimmer and pressure regulation method | |
| US20160273303A1 (en) | Actuation system with locking feature | |
| CN104214162A (en) | One-way balance valve as well as mast oil cylinder control system and rotary drilling rig | |
| CN202065271U (en) | Motor control device of power unit of rotary drilling rig | |
| CN104481714B (en) | The control method and device of engine output shaft rotating speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: China National Petroleum Corp. Patentee after: CNPC Drilling Engineering Technology Research Institute Co.,Ltd. Patentee after: Hubei PetroChina Jianghan Machinery Research Institute Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: China National Petroleum Corp. Patentee before: DRILLING RESEARCH INSTITUTE OF CHINA NATIONAL PETROLEUM Co. Patentee before: JIANGHAN MACHINERY Research Institute DR CNPC Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Patentee after: CNPC JIANGHAN MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: China National Petroleum Corp. Patentee before: CNPC Drilling Engineering Technology Research Institute Co.,Ltd. Patentee before: Hubei PetroChina Jianghan Machinery Research Institute Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230118 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Patentee after: CNPC JIANGHAN MACHINERY RESEARCH INSTITUTE Co.,Ltd. Patentee after: BEIJING PETROLEUM MACHINERY Co.,Ltd. Patentee after: BEIJING KEMBL PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: CHINA NATIONAL PETROLEUM Corp. Patentee before: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Patentee before: CNPC JIANGHAN MACHINERY RESEARCH INSTITUTE Co.,Ltd. |
|
| TR01 | Transfer of patent right |