CN111689312A - Compound combined reel - Google Patents
Compound combined reel Download PDFInfo
- Publication number
- CN111689312A CN111689312A CN201910183628.2A CN201910183628A CN111689312A CN 111689312 A CN111689312 A CN 111689312A CN 201910183628 A CN201910183628 A CN 201910183628A CN 111689312 A CN111689312 A CN 111689312A
- Authority
- CN
- China
- Prior art keywords
- shaft coupling
- coupling
- reel
- concave
- hole
- 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.)
- Pending
Links
- 150000001875 compounds Chemical class 0.000 title description 5
- 238000010168 coupling process Methods 0.000 claims description 96
- 238000005859 coupling reaction Methods 0.000 claims description 96
- 230000008878 coupling Effects 0.000 claims description 93
- 239000013013 elastic material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003345 natural gas Substances 0.000 abstract description 2
- 239000003209 petroleum derivative Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001932 seasonal effect Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/40—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material mobile or transportable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/28—Arrangements for positively securing ends of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4457—Arrangements of the frame or housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
Abstract
A duplex combined reel relates to the field of petroleum and natural gas exploration field equipment, two groups of reels which can rotate independently and synchronously are arranged on a bottom support, and a plurality of coil posts are inserted on the reels; the cable winding and unwinding device is effectively suitable for winding and unwinding different types of cables on site, improves the working efficiency and ensures the safety of equipment.
Description
Technical Field
The patent relates to the field of petroleum and natural gas exploration, in particular to a compound combined reel.
Background
In the field of oil and gas exploration, taking the integrated logging specialty as an example, sensors related to the wiring layout include: density of an inlet and an outlet, temperature of the inlet and the outlet, volume of each drilling fluid pool, pressure of a vertical pipe, hanging weight, torque, conductivity of the inlet and the outlet, outlet flow, carbon monoxide, carbon dioxide, hydrogen sulfide at different installation parts and the like, if circuits of each sensor, cables for well site communication, hose lines for gas collection and delivery, various cables and the like are summed up, the total circuits are about 60, and the length of each circuit is basically in a standard range of about 100 meters; when the device is installed in an exploration field, operators need to lay all lines in place so as to be connected with all sensors or other components; after exploration is finished, when equipment needs to be disassembled and moved and transferred, operators need to withdraw and store all lines for transportation; the basic method for collecting and arranging the lines by an operator is as follows: firstly, the connecting part of the thread end is detached, then one end of the thread end is gradually wound on the arm of the user, the thread end is wound into a thread roll with the diameter of about half a meter, and then the thread roll is bundled and stored, and the thread end is re-knotted and then wound when meeting the knotted part of the thread in the process; the basic method for collecting and arranging the lines by two operating personnel is that one person is responsible for arranging the lines, the other person slowly winds the lines on the ground according to a ring shape, and finally winds the lines into a line roller for storage, and if three persons wind and wind the lines simultaneously, the speed is naturally accelerated; the weight of a bundle of wires is about ten kilograms, and if a worker winds up a hundred meters of wires on the arms of the worker, the worker is very tired, because the arms are in a stressed state for a long time; meanwhile, the more people are in the process of winding the wire, the chaos of work can be caused, and the working space is limited due to the working place; on the contrary, the wiring process is the same; therefore, winding and drag-and-drop of wires has been a heavy physical effort; for the power line with 6 to 8 square millimeters, the weight of the power line with 100 meters can be about 30 kilograms, and the weight of the power line with the weight of 100 meters needs manual arm winding, which is undoubtedly heavy physical labor and is more unfavorable for occupational health protection; in summary, there are several problems during the process of installing and removing the line:
(1) the workload is large, and the working aging is low;
(2) the physical expenditure is too much, which affects the physical health of the operating personnel;
(3) no standard specification can be followed, and the working quality is reduced;
(4) the winding of the line is unscientific, which is easy to cause line folding, line breaking and the like, and is not beneficial to saving the running cost of the equipment;
(5) the number of participators is large, which is not beneficial to safety guarantee;
(6) the standardization degree of the work is low, and the maintenance of the working environment are not facilitated;
(7) is greatly influenced by seasonal construction.
Under the above circumstances, a convenient and fast winding tool is required to support the erection and arrangement of the line with a strong guarantee.
Disclosure of Invention
Aiming at the inconvenience in the prior art, the invention aims to provide a compound combined reel, which can improve the winding efficiency in oil-gas exploration and other production site construction operations and daily application, is convenient for moving and transferring equipment, avoids cable damage during winding and saves manual force; the technical scheme is as follows:
the utility model provides a double entry combination reel, includes two end shores, and end shores top surface detachable installs the bearing frame, erects the shaft coupling between two bearing frames, shaft coupling and bearing frame normal running fit, the inside cavity of shaft coupling, including concave shaft coupling and protruding shaft coupling, the connecting rod inserts the cavity with concave shaft coupling, protruding shaft coupling bridging, concave shaft coupling and protruding shaft coupling and connecting rod sliding fit, are equipped with the reel respectively on concave shaft coupling and the protruding shaft coupling, but concave shaft coupling and the link of protruding shaft coupling are equipped with intermeshing's concave yield and boss respectively, and when concave shaft coupling and protruding shaft coupling meshing, but concave shaft coupling and protruding shaft coupling synchronous rotation can independently rotate when concave shaft coupling and protruding shaft coupling separation.
Furthermore, the bottom support is a trapezoidal support formed by welding stainless steel plates, and walking wheels are arranged at the bottom of the trapezoidal support.
Furthermore, an annular space is reserved between the connecting rod and the coupling, a plug ring is sleeved in the annular space, and the plug ring is made of elastic materials.
Further, the reel comprises two carousels of a plurality of dish line post plug-ins, the dish line post is laid around carousel central symmetry, and the shaft hole is seted up at the carousel center, is equipped with the external screw thread on the coupling, and it is fixed through two hexagon nut subtend tightening on the external screw thread that the shaft hole cover was located, and a plurality of post holes are seted up to even symmetry in the quotation of carousel, dish line post tip is equipped with radial pinhole, inserts and fixes through the pin behind the post hole.
Furthermore, the wire coiling column is provided with a spiral edge with a large winding angle.
Further, the cover is equipped with the ply-yarn drill on the shaft coupling between two carousels, the ply-yarn drill comprises sleeve and cardboard, is equipped with the screw through-hole on the cover rampart, and the cover back on locating the shaft coupling through the screw twist screw through-hole with set up in the blind hole of shaft coupling outer wall and peg graft, the cardboard is parallel with the sleeve axis, sets up the V-arrangement bayonet socket on the cardboard for the card goes into the cable of different diameters.
Furthermore, the inner opening of the bayonet is provided with inverted teeth
Furthermore, two ends of the coupling shaft extend out of the bearing seat.
Furthermore, the top end of the extending section is provided with a threaded blind hole, and the threaded blind hole is in threaded connection with a hexagonal nut.
Furthermore, a gear is sleeved on the extending section.
Furthermore, an inner hexagonal blind hole is formed in the top end of the extending section, and an outer hexagonal prism is inserted in the blind hole.
The beneficial effect of this patent is:
(1) the workload of operators is reduced, and the working timeliness is improved;
(2) physical expenditure is reduced, and the physical health of the operating personnel is maintained;
(3) the standards and specifications of line erection and management are formed, and the working quality is improved;
(4) the winding and releasing of the line are scientific, the line breakage and other items are eliminated, and the equipment operation cost is saved;
(5) operation is not required to be participated by a plurality of people, and operation safety guarantee is supported;
(6) the working standardization degree is improved, and the maintenance of the working environment are facilitated;
(7) it is not affected by seasonal construction operation and can be used in all weather.
Drawings
FIG. 1 is a general block diagram of the present patent;
FIG. 2 is a view showing an end structure of the first rotating shaft or the second rotating shaft;
FIG. 3 is a diagram of a line card architecture;
FIG. 4 is a diagram of a coiled wire column with helical edges;
FIG. 5 is a diagram of a line card with pawl teeth;
figure 6 is a side view of a line card;
FIG. 7 is a view showing the construction of the female and male coupling;
FIG. 8 is a view of the turntable structure;
FIG. 9 is a schematic view of a coupling connection;
FIG. 10 is a schematic view of a coupling connection;
FIG. 11 is a diagram of a coil bobbin configuration;
in the figure: 1-travelling wheel, 2-bottom support, 3-fixed seat, 4-hexagon nut, 5-gear, 6-bearing, 7-wire coil column, 8-rotary table, 9-coupling, 10-hexagon screw cap, 11-pin hole, 12-coupling, 13-connecting rod, 14-plug ring, 15-external thread, 16-male coupling, 17-female coupling, 18-coupling hole, 19-column hole, 20-inner hexagon blind hole, 21-sleeve, 22-clamping plate, 23-inverted tooth, 24-screw hole, 25-first rotating shaft and 26-second rotating shaft.
Detailed Description
The following is one of the preferred embodiments of this patent:
referring to the attached drawing 1, the compound combined reel comprises two bottom supports, wherein bearing seats are detachably arranged on the top surfaces of the bottom supports, a coupling is erected between the two bearing seats, the coupling is in running fit with the bearing seats, the bearing seats are extended out of the two ends of the coupling, hexagonal nuts and gears are detachably arranged at the two ends of the coupling, two pairs of turntables are sleeved on the coupling in a detachable mode, a plurality of coil wire columns are erected between each pair of turntables, and the coil wire columns are symmetrically arranged around the centers of the turntables.
The bottom support is a trapezoidal support formed by welding stainless steel plates, and travelling wheels are arranged at the bottom of the trapezoidal support.
The coupling is formed by sequentially connecting a first rotating shaft, a concave coupling, a convex coupling and a second rotating shaft from left to right, the first rotating shaft and the second rotating shaft are rotatably connected with a bearing seat through bearings, the end parts of the first rotating shaft and the second rotating shaft extend out of the bearing seat, a gear is sleeved on the extending part, and the end part of the extending part is in threaded connection with a hexagonal nut which can be used for manual operation; the concave coupling and the convex coupling are hollow rotating shafts, and the first rotating shaft is connected with the concave coupling, the convex coupling and the second rotating shaft through a coupling; the female coupling and the male coupling are in separable splicing fit, the splicing ends of the female coupling and the male coupling are respectively provided with a concave recess and a convex protrusion which are in splicing fit, the end part of the specific female coupling is provided with 6 concave recesses, the end part of the corresponding male coupling is provided with 6 convex bosses, the female coupling and the male coupling can synchronously rotate when being spliced, a connecting rod is sleeved in the hollow cavity, a plug ring is sleeved between the connecting rod and the inner wall of the coupling, the plug ring is made of elastic materials, the coaxiality of the female coupling and the male coupling is improved, and the female coupling and the male coupling are connected by the connecting rod when being separated; two pairs of external threads are respectively arranged on the concave coupling shaft and the convex coupling shaft and used for installing the rotary table.
The center of the rotary table is provided with a coupling shaft hole which is sleeved on the external thread through the coupling shaft hole, two hexagonal nuts are oppositely screwed to realize axial and radial fixation, and the disc surface of the rotary table is uniformly and symmetrically provided with a plurality of column holes for mounting disc line columns; the winding diameter can be changed by inserting the winding column into the column hole with different linear distances from the center of the rotary table, so that the rotary table is suitable for different winding lengths.
The coil wire column end is equipped with radial pinhole, inserts and fixes through the pin behind the post hole, prevents to drop.
The coupling is the sleeve that is equipped with one or more radial through-hole, and the link of first pivot and concave coupling is equipped with the screw hole that corresponds with it, through first pivot of screw detachable connection and concave coupling, the connected mode of second pivot and convex coupling is the same.
Referring to the attached drawing 2, the hexagon nut at the end of the first rotating shaft or the second rotating shaft can be replaced by an inner hexagon blind hole, an outer hexagon wrench is used for rotating, or an outer hexagon screwdriver head is inserted into the inner hexagon blind hole, the screwdriver head is clamped by a large-torque electric hand drill for rotating, and the large-torque lithium electric hand drill can be used during field construction.
Referring to the attached drawings 1, 3 and 6, a wire clamp is sleeved on the outer wall of a concave coupling or a convex coupling and consists of a sleeve and a clamping plate, a screw hole is formed in the wall of the sleeve, the sleeve is sleeved on the coupling and then screwed into a threaded through hole through a screw to be inserted into a blind hole formed in the outer wall of the coupling, radial rotation is prevented, the clamping plate is parallel to the axis of the sleeve, and a V-shaped bayonet is formed in the clamping plate and used for clamping cables with different diameters; referring to fig. 5, the inner opening of the bayonet is provided with inverted teeth to further reinforce the clamped cable and prevent the cable from falling off; the cable head is clamped into the wire clamp, and then the winding operation can be carried out.
Referring to fig. 4, the wire coiling column is provided with a spiral edge with a large winding angle, so that the wire coiling column plays a role in guiding the cable, prevents the cable from being wound disorderly and protects the cable.
Claims (11)
1. The utility model provides a double entry combination reel, includes two end shores, and end shores top surface detachable installs the bearing frame, erects the shaft coupling between two bearing frames, shaft coupling and bearing frame normal running fit, characterized by, the inside cavity of shaft coupling, including concave shaft coupling and protruding shaft coupling, the connecting rod inserts cavity with concave shaft coupling, protruding shaft coupling bridging, concave shaft coupling and protruding shaft coupling and connecting rod sliding fit, are equipped with the reel respectively on concave shaft coupling and the protruding shaft coupling, but concave shaft coupling and the link of protruding shaft coupling are equipped with mutually engaged's concave yield and boss respectively, and when concave shaft coupling and protruding shaft coupling meshing, but concave shaft coupling and protruding shaft coupling synchronous rotation can independently rotate when concave shaft coupling and protruding shaft coupling separation.
2. A twin reel assembly according to claim 1 in which the drag is a trapezoidal brace formed by welding stainless steel plates, the foot being provided with a running wheel.
3. The twin combination reel of claim 1, wherein an annular space is provided between the connecting rod and the coupling, and a plug ring is disposed in the annular space and is made of an elastic material.
4. A dual combination reel according to any one of claims 1 to 3, wherein the reel is formed by inserting two turnplates into a plurality of spool rods, the spool rods are symmetrically arranged around the center of the turnplates, the center of the turnplates is provided with a shaft hole, the coupling is provided with an external thread, the shaft hole is sleeved on the external thread and is oppositely screwed and fixed by two hexagon nuts, a plurality of spool holes are uniformly and symmetrically arranged on the surfaces of the turnplates, the end parts of the spool rods are provided with radial pin holes, and the spool rods are fixed by pins after being inserted into the spool holes.
5. A twin combination reel as defined in claim 4 in which the spool is provided with large wrap angle helical edges.
6. The duplex combination reel as claimed in claim 4, wherein the coupling between the two rotary discs is sleeved with a line clip, the line clip is composed of a sleeve and a clamping plate, the sleeve wall is provided with a threaded through hole, the sleeve is sleeved on the coupling and then screwed into the threaded through hole through a screw to be inserted into a blind hole formed in the outer wall of the coupling, the clamping plate is parallel to the sleeve axis, and the clamping plate is provided with a V-shaped bayonet for clamping cables with different diameters.
7. A twin combination reel as defined in claim 6 in which the inner mouth of the bayonet is provided with a set of serrations.
8. A twin combination reel as claimed in any one of claims 1 to 3 in which the ends of the coupling project out of the bearing housing.
9. The twin combination reel of claim 8, wherein the protruding section has a blind threaded hole at a top end thereof, the blind threaded hole being threadedly engaged with the hexagonal nut.
10. The twin combination reel of claim 8, wherein said protruding section is sleeved with a gear.
11. The twin combination reel of claim 8, wherein the top end of the protruding section is provided with an inner hexagonal blind hole, and an outer hexagonal prism is inserted into the blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183628.2A CN111689312A (en) | 2019-03-12 | 2019-03-12 | Compound combined reel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910183628.2A CN111689312A (en) | 2019-03-12 | 2019-03-12 | Compound combined reel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111689312A true CN111689312A (en) | 2020-09-22 |
Family
ID=72475298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910183628.2A Pending CN111689312A (en) | 2019-03-12 | 2019-03-12 | Compound combined reel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111689312A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112850380A (en) * | 2021-01-05 | 2021-05-28 | 周巧慧 | Oil conveying system for offshore oil platform and using method thereof |
-
2019
- 2019-03-12 CN CN201910183628.2A patent/CN111689312A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112850380A (en) * | 2021-01-05 | 2021-05-28 | 周巧慧 | Oil conveying system for offshore oil platform and using method thereof |
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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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240117 Address after: Room 1202, No. 22, Chaoyangmen North Street, Chaoyang District, Beijing 100020 Applicant after: Sinopec Petroleum Engineering Technology Service Co.,Ltd. Applicant after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant after: Sinopec Jingwei Co.,Ltd. Applicant after: Shengli geological logging company of Sinopec Jingwei Co.,Ltd. Address before: 100101 Beichen West Road, Chaoyang District, Beijing 8 Beichen world center, block A 703. Applicant before: SINOPEC OILFIELD SERVICE Corp. Applicant before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant before: GEOLOGICAL LOGGING BRANCH OF SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. |
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| TA01 | Transfer of patent application right |