CN204060522U - A kind of continuous oil pipe operation equipment and jacknife mast thereof - Google Patents
A kind of continuous oil pipe operation equipment and jacknife mast thereof Download PDFInfo
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- CN204060522U CN204060522U CN201420384893.XU CN201420384893U CN204060522U CN 204060522 U CN204060522 U CN 204060522U CN 201420384893 U CN201420384893 U CN 201420384893U CN 204060522 U CN204060522 U CN 204060522U
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Abstract
The utility model discloses a kind of jacknife mast, comprise: derrick body, be divided at least two sections, its adjacent two sections are respectively basic segment (6) and folded section (3), and described basic segment (6) and folded section (3) are hinged at butt end place; Folding ram, drives described folded section (3) to rotate relative to basic segment (6); And there is folding front state and folding rear state: state before being folded, described folded section (3) is positioned at described basic segment (6) top and also parallels with it; State after folding, described folded section (3) is docked with basic segment (6) and is positioned at same straight line.This derrick can either ensure overall operation length, meets injection head job requirements, can shorten transportation lengths again simultaneously, improves car load by performance, meets road driving requirement.The invention also discloses the continuous oil pipe operation equipment being provided with described jacknife mast.
Description
Technical field
The utility model relates to oil gas production equipment technical field, particularly the jacknife mast of continuous oil pipe operation equipment.The utility model also relates to the continuous oil pipe operation equipment being provided with described jacknife mast.
Background technology
In recent years, along with the development of horizontal well and high angle hole technology, coiled tubing has become the rare ideal tools of horizontal well and ultradeep well conveying downhole tool in Oil/gas Well operation, well logging, reservoir reconstruction.
Coiled tubing has well around property, one volume coiled tubing can reach a few km, therefore also referred to as coiled tubing, the feature such as continuous oil pipe operation equipment has Operating Pressure, removes continuously, formation Low Damage, equipment volume are little, duty cycle is fast, cost is low, conventional oil pipe can be replaced to complete a lot of operation, be widely used in the field of operation such as oil gas field well workover, drilling well, completion, well logging, through the overall process of oil-gas mining.
Continuous oil pipe operation equipment is generally primarily of control room, cylinder, well control system, dynamical system and the first-class composition of injection, injection head is the core component of continuous oil pipe operation, time it is constructed at the scene, often distance ground level is greater than 10m, and this just fixes the scene of injection head and construction safety proposes very high requirement.
At present, the operating type of coiled tubing injection head has two kinds usually: a kind of for adopting crane to hang injection head operation; A kind of is with carrying derrick operation.Wherein, adopt crane operation, injection head is designed to independently lift module, not only needs crane vertical lifting, and ground also needs to be fixed with 4-6 group guy wire, and the engineering time is long, and labour intensity is large, and security risk is higher; And employing carries derrick operation, injection head is mounted to above derrick, and do position adjustment with derrick, automaticity is high, and ground is without the need to guy wire, fixing reliable.
The derrick of existing continuous oil pipe operation equipment is mostly fixing integral type derrick, require the length of vehicle due to road driving and highly have strict demand, therefore the length of derrick and the length of car load are all restricted, what cause derrick length to design is relatively short, and shorter derrick is not well positioned to meet the job requirements of injection head, namely there is contradiction between derrick length and transport, this contradiction has had a strong impact on and has carried applying of derrick operation.
Therefore, how eliminating the contradiction between derrick length and transport, is those skilled in the art's technical issues that need to address.
Utility model content
The purpose of this utility model is to provide a kind of jacknife mast.This derrick can either ensure overall operation length, meets injection head job requirements, can shorten transportation lengths again simultaneously, improves car load by performance, meets road driving requirement.
Another object of the present utility model is to provide a kind of continuous oil pipe operation equipment being provided with described jacknife mast.
For achieving the above object, the utility model provides a kind of jacknife mast, comprising:
Derrick body, is divided at least two sections, and its adjacent two sections are respectively basic segment and folded section, and described basic segment and folded section are hinged at butt end place;
Folding ram, drives described folded section to rotate relative to basic segment;
And there is folding front state and folding rear state:
State before being folded, described folded section is positioned at above described basic segment and also parallels with it;
State after folding, described folded section is docked with basic segment and is positioned at same straight line.
Preferably, comprise folded turnover part further, the hinge of its first hinge and described basic segment and folded section coincides;
Described folding ram comprises folding ram and lower folding ram;
Described upper folding ram connects the second hinge of described folded section and folded turnover part, and described lower folding ram connects the tri-joint mechanism of described basic segment and folded turnover part;
Described first hinge, line between the second hinge and tri-joint mechanism are triangular in shape.
Preferably, folding middle state is also comprised;
State before being folded, described upper folding ram and lower folding ram all protruding, and to be parallel to each other;
In folding middle state, described upper folding ram is inwardly regained, and described lower folding ram is protruding, and described folded section is perpendicular to basic segment;
State after folding, described upper folding ram and lower folding ram are all inwardly regained, and are positioned at same straight line.
Preferably, described folded turnover part is triangular in shape, and described first hinge, the second hinge and tri-joint mechanism lay respectively at its triangle place.
Preferably, described folded turnover part is isosceles triangle, and described first hinge is positioned at its drift angle place, and described second hinge and tri-joint mechanism lay respectively at its other two jiaos of places.
Preferably, the hinge of described basic segment and folded section is positioned at from the adjacent of both butt ends with the connector of the oblique extension of mode close to each other.
Preferably, described basic segment and folded section are provided with locking mechanism at butt end place, and described locking mechanism comprises:
Lock-bit axle, is located at described basic segment or folded section;
Locked hook, is rotatingly installed on described folded section or basic segment;
Lock-bit oil cylinder, drive described locked hook to rotate, its one end is articulated with described folded section or basic segment, and the other end is articulated with described locked hook back;
And there is two states, in the first state, described locked hook and lock-bit axle depart from mutually, and in the second state, described locked hook is engaged mutually with lock-bit axle.
For realizing another object above-mentioned, the utility model also provides a kind of continuous oil pipe operation equipment, comprise the one in control room, cylinder, well control system, dynamical system and injection head, both or many persons, also comprise injection head derrick, described injection head derrick is the jacknife mast described in above-mentioned any one.
Preferably, the basic segment of described jacknife mast is connected to support member by rotary pin shaft, and its side is provided with telescopic oil cylinder, and opposite side is provided with locking mechanism.
Preferably, described locking mechanism comprises:
Head rod, its one end and described basic segment hinged, the other end is provided with screw thread;
Second connecting rod, its one end and described support member hinged, the other end is provided with screw thread;
Double-ended nut, the nut at its two ends is connected with the end of thread of described head rod and the second connecting rod respectively, and the hand of spiral of described head rod and the second connecting rod is contrary.
The utility model has done further improvement to injection head derrick, its derrick body is no longer monolithic construction, but be divided at least two sections, often adjacent two sections are respectively basic segment and folded section, and wherein folded section can do 180 degree of rotary motions relative to basic segment around pin joint under the driving of folding ram.Like this, when operation, derrick body can be launched, folded section is made to dock with basic segment and be located along the same line, in motion, can by this folded body of derrick, folded section is oppositely stacked in above basic segment, thus transportation lengths is substantially reduced while guarantee derrick overall operation length, improve car load by performance, solve the transportation problem that derrick length is brought.
In a kind of preferred version, folded turnover part is provided with at the joint of described folded section and basic segment, and adopt upper folding ram and lower folding ram to drive folded section to rotate, each folding ram can drive folded section 90-degree rotation respectively, thus at twice 90 degree of spinning movements to complete derrick folding and launch, ensure that uniformity and the reliability of jackknife action.
In another kind of preferred version, described basic segment and folded section are provided with locking mechanism at butt end place, by this locking mechanism, described folded section and basic segment can mutually lock after docking, with the bonding strength of both raisings, guarantee that the positioning security of derrick is reliable, improve derrick security performance.
Continuous oil pipe operation equipment provided by the utility model is provided with above-mentioned jacknife mast, and because above-mentioned jacknife mast has above-mentioned technique effect, the continuous oil pipe operation equipment being provided with this jacknife mast also should possess corresponding technique effect.
Accompanying drawing explanation
Fig. 1 provide by the utility model jacknife mast be in folding before state time structural representation;
Fig. 2 provide by the utility model jacknife mast be in folding in state time structural representation;
Fig. 3 provide by the utility model jacknife mast be in folding after state time structural representation;
Fig. 4 provides by the utility model the structural representation of the locking mechanism of jacknife mast when unlocking;
Fig. 5 provides by the utility model the structural representation of the locking mechanism of jacknife mast when locking;
Fig. 6 provides by the utility model the field operation schematic diagram of continuous oil pipe operation equipment;
Fig. 7 is the close-up schematic view at A position in Fig. 6.
In figure:
1. folding ram 42. times folding ram 43. folded turnover part 5. locking mechanism 51. fixed pin shaft 52. lock-bit oil cylinder 53. locked hook 54. lock-bit axle 6. basic segments 7. 3 grades of telescopic oil cylinder 8. locking mechanism 81. head rod 82. second connecting rod 83. Double-ended nut 9. rotary pin shaft 10. auxiliary support frame 11. hydraulic leg 12. chassis vehicle 13. bracing or strutting arrangements in operation wellhead 2. injection head 3. folded section 4. fold mechanism 44. alignment pin 41.
Detailed description of the invention
In order to make those skilled in the art person understand the utility model scheme better, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
To please refer to Fig. 1,2,3, Fig. 1 provide by the utility model jacknife mast be in folding before state time structural representation; Fig. 2 provide by the utility model jacknife mast be in folding in state time structural representation; Fig. 3 provide by the utility model jacknife mast be in folding after state time structural representation.
In a kind of specific embodiment, the derrick body of the jacknife mast that the utility model provides is divided into two sections, and one section is basic segment 6, and another section is folded section 3, and both are hinged at butt end place, can launch under the effect of fold mechanism 4 or pack up.
Particularly, basic segment 6 and the adjacent of folded section 3 in butt end are provided with the hinged seat of oblique extension in mode close to each other, and are hinged by alignment pin 44, thus realize being rotationally connected.This articulated manner, can avoid mutual interference, reserves enough upset spaces.
Fold mechanism 4 is primarily of compositions such as upper folding ram 41, lower folding ram 42 and folded turnover parts 43, folded turnover part 43 is in isosceles triangle, its triangle place is respectively equipped with the first hinge, the second hinge, tri-joint mechanism, wherein the first hinge is positioned at its drift angle place, be articulated with same bearing pin with basic segment 6 and folded section 3, the second hinge and tri-joint mechanism lay respectively at other two jiaos of places.
One end and the folded section 3 of upper folding ram 41 are hinged by bearing pin in side, second hinge of the other end and folded turnover part 43 is hinged by bearing pin, one end and the basic segment 6 of lower folding ram 42 are hinged by bearing pin in side, the other end be hinged by bearing pin with the tri-joint mechanism of folded turnover part 43.
Certainly, the first hinge, line between the second hinge and tri-joint mechanism are triangular in shape, and do not mean that folded turnover part 43 must be also triangle, and except triangle, folded turnover part 43 can also be designed to other shapes.
Jacknife mast is when off working state or travel position, folded section 3 is positioned at above basic segment 6 and also parallels with it, bracing or strutting arrangement 13 is provided with in the middle of both, under the supporting role of bracing or strutting arrangement 13, both keep a determining deviation, upper folding ram 41 is all protruding with lower folding ram 42, and be parallel to each other (see Fig. 1).
Expansion or the process of packing up of jacknife mast are divided into two parts, Part I is the 90 ° spinning movements of folded section 3 relative to basic segment 6, by controlling upper folding ram 41, its cylinder rod is inwardly regained, the cylinder rod of lower folding ram 42 keeps protruding, now folded turnover part 43 maintains static, when the cylinder rod of upper folding ram 41 is all regained, folded section 3 is in erectility, perpendicular with basic segment 6 (see Fig. 2).
Part II is another time 90 ° of spinning movements of folded section 3, the cylinder rod now going up folding ram 41 keeps motionless after stretching out, by controlling lower folding ram 42, its cylinder rod is regained, Foldable flip piece 43 and folded section 3 rotate simultaneously, when the cylinder rod of lower folding ram 42 is all regained, folded section 3 is docked with basic segment 6 and is positioned at same straight line (see Fig. 3)
When operation, derrick body can be launched, folded section 3 is made to dock with basic segment 6 and be located along the same line, in motion, can, by this folded body of derrick, folded section 3 be made oppositely to be stacked in above basic segment 6, thus transportation lengths is substantially reduced while guarantee derrick overall operation length, improve car load by performance, and at twice 90 ° of spinning movements to complete derrick folding and launch, ensure that uniformity and the reliability of jackknife action.
Above-mentioned upper folding ram 41, lower folding ram 42 and folded turnover part 43 1 have two groups, install in jacknife mast bilateral symmetry, namely have two covers to overlap identical upper folding ram 41 and be arranged on jacknife mast both sides with the two identical lower folding ram 42 of cover and folded turnover part 43.
Please refer to Fig. 4, Fig. 5, Fig. 4 provides by the utility model the structural representation of the locking mechanism of jacknife mast when unlocking; Fig. 5 provides by the utility model the structural representation of the locking mechanism of jacknife mast when locking.
In order to improve further folded section 3 dock with basic segment 6 after bonding strength, improve derrick security performance, in basic segment 6 and folded section 3 butt end, locking mechanism can be set relative to the opposite side of pin joint.
Particularly, locking mechanism is primarily of parts compositions such as fixed pin shaft 51, lock-bit oil cylinder 52, locked hook 53 and lock-bit axles 54, wherein fixed pin shaft 51, lock-bit oil cylinder 52 and locked hook 53 are positioned at folded section 3, lock-bit axle 54 is positioned at basic segment 6, locked hook 53 is arranged in folded section 3 by bearing pin, can rotate around bearing pin, one end of lock-bit oil cylinder 52 is hinged by fixed pin shaft 51 and folded section 3, and the other end is hinged by the junction plate at bearing pin and locked hook 53 back side.When the cylinder rod of lock-bit oil cylinder 52 stretches out, locked hook 53 will rotate around its bearing pin, and finally mutually be engaged with the lock-bit axle 54 be fixed in basic segment 6, realize hydraulic lock, when the cylinder rod of lock-bit oil cylinder 52 is regained, then locked hook 53 and lock-bit axle 54 depart from mutually, realize unlocking.
Be appreciated that locked hook 53 can exchange with the position of lock-bit axle 54, namely locked hook 53 and appurtenances thereof are arranged in basic segment 6, and lock-bit axle 54 is arranged in folded section 3.
Above-mentioned jacknife mast is only a kind of preferred version of the present utility model, is specifically not limited thereto, and can make pointed adjustment according to actual needs on this basis, thus obtain different embodiments.Such as, derrick body is divided into three sections, four sections or more sections, adopts said structure to be interconnected between adjacent two sections, or on the basis of above-mentioned embodiment, by folding ram upside-down mounting etc.Because mode in the cards is more, just illustrate no longer one by one here
Please refer to Fig. 6, Fig. 6 provides by the utility model the field operation schematic diagram of continuous oil pipe operation equipment
Except above-mentioned jacknife mast, the utility model also provides a kind of continuous oil pipe operation equipment, is specially coiled tubing work vehicle, primarily of compositions such as chassis vehicle 12, hydraulic leg 11, auxiliary support frame 10, injection head derrick, injection heads 2.
Wherein, chassis vehicle 12 can select import or domestic chassis, and the both sides on chassis are respectively provided with two cover hydraulic legs 11, and the object of hydraulic leg 11 is the support force providing derrick, be similar to the hydraulic leg of crane, fixing and support when auxiliary support frame 10 is for providing derrick to transport.
Injection head derrick is the jacknife mast in above-described embodiment, the root of the basic segment 6 of jacknife mast is articulated with the main support of chassis vehicle 12 afterbody by rotary pin shaft 9, be provided with three grades of telescopic oil cylinders 7 between the front side of basic segment 6 and chassis vehicle 12, between rear side and main support, be provided with locking mechanism 8.
As shown in Figure 7, locking mechanism 8 forms primarily of head rod 81, second connecting rod 82 and Double-ended nut 83, and one end and the basic segment 6 of head rod 81 are hinged, and the other end is provided with screw thread; One end and the main support of the second connecting rod 82 are hinged, and the other end is also provided with screw thread; The nut at Double-ended nut 83 two ends is connected with the end of thread of head rod 81 and the second connecting rod 82 respectively, and the hand of spiral of head rod 81 and the second connecting rod 82 is contrary.Like this, rotate Double-ended nut 83 and the connecting length of two connecting rods can be made to increase or reduce, thus jacknife mast is locked in fixed angle position.
During field operation, working vehicle is adjusted to the correct position of distance operation wellhead 1, primer fluid pressure control system, first by fold mechanism 4, jacknife mast is launched, make folded section 3 and basic segment 6 be in straight line position, and locked by hydraulic lock mechanism 5.
Further operation controlling organization, makes the cylinder rod of three grades of reduction oil cylinders 7 stretch out, and the action of oil cylinder promotes jacknife mast and slowly rises for fulcrum with rotating pin 9, until derrick puts in place, the final position of derrick is derrick basal plane and horizontal plane angle 5 degree to 15 degree.
After derrick puts in place, carry out mechanical caging, guarantee the stability of derrick by the mechanical lock mechanism 8 bottom derrick, injection head 2 can do position adjustment by coasting mechanism and angle-adjusting mechanism effect on derrick, and realizes the centering of operation wellhead.
This working vehicle is fixed by the mechanical lock mechanism 8 bottom derrick and three grades of hydraulically extensible oil cylinders 7 and is regulated the inclination angle of derrick, the angle of derrick and horizontal plane can be provided to be between 5 degree to 15 degree, provide effective well head operating space.
Jacknife mast of the present utility model includes but not limited to the vehicle-mounted derrick of coiled tubing work vehicle, continuous oil pipe operation equipment is also not limited to coiled tubing work vehicle, can also be other implements of the one comprised in control room, cylinder, well control system, dynamical system and injection head, both or many persons.
Above continuous oil pipe operation equipment provided by the utility model and jacknife mast thereof are described in detail.Apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands core concept of the present utility model for helping.Should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also carry out some improvement and modification to the utility model, these improve and modify and also fall in the protection domain of the utility model claim.
Claims (10)
1. a jacknife mast, is characterized in that, comprising:
Derrick body, is divided at least two sections, and its adjacent two sections are respectively basic segment (6) and folded section (3), and described basic segment (6) and folded section (3) are hinged at butt end place;
Folding ram, drives described folded section (3) to rotate relative to basic segment (6);
And there is folding front state and folding rear state:
State before being folded, described folded section (3) is positioned at described basic segment (6) top and parallels with it;
State after folding, described folded section (3) is docked with basic segment (6) and is positioned at same straight line.
2. jacknife mast according to claim 1, is characterized in that, comprises folded turnover part (43) further, and the hinge of its first hinge and described basic segment (6) and folded section (3) coincides;
Described folding ram comprises folding ram (41) and lower folding ram (42);
Described upper folding ram (41) connects the second hinge of described folded section (3) and folded turnover part (43), and described lower folding ram (42) connects the tri-joint mechanism of described basic segment (6) and folded turnover part (43);
Described first hinge, line between the second hinge and tri-joint mechanism are triangular in shape.
3. jacknife mast according to claim 2, is characterized in that, also comprises folding middle state;
State before being folded, described upper folding ram (41) is all protruding with lower folding ram (42), and is parallel to each other;
In folding middle state, described upper folding ram (41) is inwardly regained, and described lower folding ram (42) is protruding, and described folded section (3) is perpendicular to basic segment (6);
State after folding, described upper folding ram (41) and lower folding ram (42) are all inwardly regained, and are positioned at same straight line.
4. jacknife mast according to claim 3, is characterized in that, described folded turnover part (43) is triangular in shape, and described first hinge, the second hinge and tri-joint mechanism lay respectively at its triangle place.
5. jacknife mast according to claim 4, is characterized in that, described folded turnover part (43) is in isosceles triangle, and described first hinge is positioned at its drift angle place, and described second hinge and tri-joint mechanism lay respectively at its other two jiaos of places.
6. the jacknife mast according to any one of Claims 1-4, is characterized in that, the hinge of described basic segment (6) and folded section (3) is positioned at from the adjacent of both butt ends with the connector of the oblique extension of mode close to each other.
7. the jacknife mast according to any one of Claims 1-4, is characterized in that, described basic segment (6) and folded section (3) are provided with locking mechanism (5) at butt end place, and described locking mechanism (5) comprising:
Lock-bit axle (54), is located at described basic segment (6) or folded section (3);
Locked hook (53), is rotatingly installed on described folded section (3) or basic segment (6);
Lock-bit oil cylinder (52), drives described locked hook (53) to rotate, and its one end is articulated with described folded section (3) or basic segment (6), and the other end is articulated with described locked hook (53);
And there is two states, in the first state, described locked hook (53) and lock-bit axle (54) depart from mutually, and in the second state, described locked hook (53) is engaged mutually with lock-bit axle (54).
8. a continuous oil pipe operation equipment, comprise the one in control room, cylinder, well control system, dynamical system and injection head, both or many persons, it is characterized in that, also comprise injection head derrick, described injection head derrick is the jacknife mast described in any one of the claims 1 to 7.
9. continuous oil pipe operation equipment according to claim 8, it is characterized in that, the basic segment (6) of described jacknife mast bottommost is connected to support member by rotary pin shaft (9), and its side is provided with telescopic oil cylinder, and opposite side is provided with locking mechanism (8).
10. continuous oil pipe operation equipment according to claim 9, is characterized in that, described locking mechanism (8) comprising:
Head rod (81), its one end and described basic segment (6) hinged, the other end is provided with screw thread;
Second connecting rod (82), its one end and described support member hinged, the other end is provided with screw thread;
Double-ended nut (83), the nut at its two ends is connected with the end of thread of described head rod (81) and the second connecting rod (82) respectively, and the hand of spiral of described head rod (81) and the second connecting rod (82) is contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384893.XU CN204060522U (en) | 2014-07-11 | 2014-07-11 | A kind of continuous oil pipe operation equipment and jacknife mast thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420384893.XU CN204060522U (en) | 2014-07-11 | 2014-07-11 | A kind of continuous oil pipe operation equipment and jacknife mast thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204060522U true CN204060522U (en) | 2014-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420384893.XU Withdrawn - After Issue CN204060522U (en) | 2014-07-11 | 2014-07-11 | A kind of continuous oil pipe operation equipment and jacknife mast thereof |
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| Country | Link |
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| CN (1) | CN204060522U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074468A (en) * | 2014-07-11 | 2014-10-01 | 北京奥瑞安能源技术开发有限公司 | Coiled tubing operation equipment and folding derrick of coiled tubing operation equipment |
| CN114658932A (en) * | 2022-03-18 | 2022-06-24 | 北京中瀚环球真空流体科技有限责任公司 | Hydraulic truss type moving mechanism with pipeline capable of being folded and unfolded quickly and adjustable in angle |
-
2014
- 2014-07-11 CN CN201420384893.XU patent/CN204060522U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074468A (en) * | 2014-07-11 | 2014-10-01 | 北京奥瑞安能源技术开发有限公司 | Coiled tubing operation equipment and folding derrick of coiled tubing operation equipment |
| CN104074468B (en) * | 2014-07-11 | 2016-02-24 | 北京奥瑞安能源技术开发有限公司 | A kind of continuous oil pipe operation equipment and jacknife mast thereof |
| CN114658932A (en) * | 2022-03-18 | 2022-06-24 | 北京中瀚环球真空流体科技有限责任公司 | Hydraulic truss type moving mechanism with pipeline capable of being folded and unfolded quickly and adjustable in angle |
| CN114658932B (en) * | 2022-03-18 | 2023-10-20 | 北京中瀚环球真空流体科技有限责任公司 | Hydraulic truss type moving mechanism capable of rapidly folding and unfolding pipeline and adjusting angle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141231 Effective date of abandoning: 20160224 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |