CN206409200U - One kind has the digital dispensing downhole cable wet joint instrument of cable - Google Patents
One kind has the digital dispensing downhole cable wet joint instrument of cable Download PDFInfo
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- CN206409200U CN206409200U CN201621349376.4U CN201621349376U CN206409200U CN 206409200 U CN206409200 U CN 206409200U CN 201621349376 U CN201621349376 U CN 201621349376U CN 206409200 U CN206409200 U CN 206409200U
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- ring
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- pin end
- cable
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Abstract
The utility model, which is related to one kind, the digital dispensing downhole cable wet joint instrument of cable, including docking lower body and docking upper body, and docking lower body includes pin end supporter, righting shell, pin end assembly；Docking upper body includes female joint assembly, weighted lever assembly.The beneficial effects of the utility model are：There is the digital dispensing downhole cable wet joint of cable to introduce cable in oil pipe, solution has the digital dispensing Operating Pressure technical barrier of cable, save lower wireline test allotment process, improve water filling level of digital, realize that water-injection station is implemented individual layer flow rate test to dispensing well and allocated, realize the foundation of the data message passage such as flow, pressure, temperature, testing seal about packer.
Description
Technical field
The utility model is related in the construction of oil field ties up field of cables outside oil pipe, more particularly to one kind has the digital dispensing well of cable
Lower cable wet joint instrument.
Background technology
At present, oil field has the digital zonal injection technology of cable to tie up cable construction outside oil pipe, the process developed in seperated layer water injection
In, directional well surveys that tune is hampered that rate is high, tester falls that well is frequent, testing seal about packer is difficult when hole deviation is larger, there is scene and applies
The problems such as industry that works complexity, low construction efficiency, big Operating Pressure difficulty, while water filling level of digital is low.
Utility model content
Technical problem to be solved in the utility model, which is to provide one kind, the digital dispensing downhole cable wet joint work of cable
Tool, the problems such as solving Contraction in Site complexity, low construction efficiency, big Operating Pressure difficulty in the prior art.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：
One kind has the digital dispensing downhole cable wet joint instrument of cable, including docking lower body and docking upper body, docks lower body
Including pin end supporter, righting shell, pin end assembly；Docking upper body includes female joint assembly, weighted lever assembly；
One end of pin end assembly is provided with locking catch, and one end of female joint assembly is provided with guide head, the groove and lock of guide head
The boss grabbed constitutes dismountable locking device；
After pin end assembly and female joint assembly are connected, the inside of pin end assembly and female joint assembly are butted into inside
Sealed cavity；
Pin end assembly and female joint assembly are arranged in righting shell, and one end of weighted lever assembly is from righting shell
Top extend into righting shell and is connected with female joint assembly, the other end and cable connection of weighted lever assembly；
The inwall of the outer wall and righting shell of the weighted lever assembly is sticked together, and the outer wall of the weighted lever assembly is opened up
There are groove, inwall the first flow channels of formation of groove and righting shell；
Gap is left between the outer wall of the female joint assembly and the inwall of righting shell；Gap connects with the first flow channels
It is logical；
The pin end supporter is fixed anti-rotation with the bottom of righting shell and is connected；
One end of the pin end supporter extend into the righting shell and is connected with the pin end assembly, public access
The inside of head supporter is provided with through hole, forms the second flow channels, and one end of the second flow channels is connected with gap, the second excessively stream
The other end of passage and the internal diameter of working string are connected.
The beneficial effects of the utility model are：There is the digital dispensing downhole cable wet joint of cable to introduce cable in oil pipe,
Solution has the digital dispensing Operating Pressure technical barrier of cable, saves lower wireline test allotment process, improves water filling level of digital,
Realize that water-injection station is implemented individual layer flow rate test to dispensing well and allocated, realize that the data such as flow, pressure, temperature, testing seal about packer are believed
Cease the foundation of passage.
Further：Pin end assembly includes connector, electric conductor component, center pull rod, guide cone, plunger case, balance and lived
Plug, pin end pressure-bearing body, pin end connector, pin end swivel nut and locking catch；
One end of center pull rod is threadedly coupled with connector, and the electric conductor assembly set is in center pull rod, the conduction
The bottom of body component and connector grafting, the other end of center pull rod are threadedly coupled with the smaller diameter end of guide cone；Guide cone
Larger diameter end carries the grafting of dummy piston one end with plunger case, and other end connection pin end pressure-bearing body and the pin end of plunger case connect
Junctor, the other end endoporus of pin end connector installs sealing-plug, and the middle conductive contact of sealing-plug passes through wire and electric conductor
Pin end swivel nut is installed, locking catch is passed through and public access from guide cone smaller diameter end on element turns, pin end connector both sides external diameter
Head swivel nut connection；Sealed in each splicing position using sealing ring.
The beneficial effect of above-mentioned further scheme is：With preferable sealing effectiveness, the effect of reinforced insulation.
Further, the electric conductor component include dead ring, conducting ring and lengthen ring, the dead ring, conducting ring and add
Long ring is sequentially sleeved in dead ring described in the center pull rod and the connector grafting, the conducting ring and dead ring from down to up
Grafting, lengthens ring and conducting ring grafting；The middle conductive contact of the sealing-plug is turned on by wire and conducting ring；Inserted at each
Place is met to seal using sealing ring.
Further, the electric conductor component is provided with multigroup, adjacent conducting ring assemblies be plugged into along the vertical direction together,
Each splicing position is sealed using sealing ring.
Take having the beneficial effect that for such scheme：The number of electric conductor component can be selected according to specific service condition.
Further：Female joint assembly is main by female connector, lower connection swivel nut, female joint outer barrel, balance connected set, interior connection
Head, female dummy piston, conductive ferrule component, locating ring and the guide head used cooperatively with electric conductor component；
One end of female connector and one end grafting of balance connected set, the other end and being equipped with for interior coupling head for balancing connected set are female
One end grafting of dummy piston, the other end of interior coupling head and one end grafting of conductive ferrule component；
Balance connected set, interior coupling head, female dummy piston and conductive ferrule component are arranged in female joint outer barrel, mother's connection
Body is connected by lower connection swivel nut thereon with one end internal thread of female joint outer barrel, the other end and guide head of female joint shell
Connection；
Sealed in each splicing position using sealing ring；
The electric conductor component is consistent with the number of conducting ring assemblies.
The beneficial effect of above-mentioned further scheme is：With preferable sealing effectiveness, the effect of reinforced insulation.
Further, the conductive ferrule component includes female dead ring, excluder ring, connects electric ring body and leaf spring；
One end grafting of the other end of the interior coupling head and female dead ring, the inner side of female dead ring is installed by envelope
Spacer ring installs leaf spring with electric ring body, the inner side for connecing electric ring body is connect；Sealed in splicing position using sealing ring.
Further, the conductive ferrule component is provided with multiple, and adjacent conductive ferrule component is plugged on by female dead ring
Together；Sealed in each splicing position using sealing ring.
Take having the beneficial effect that for such scheme：Suitable number of conduction is selected the need for can facilitating according to actual use
Ring body component.
Further, the pin end supporter is fixed anti-rotation by threaded collar with the bottom of righting shell and is connected.
Take having the beneficial effect that for such scheme：Convenient dismounting and installation.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of pin end assembly；
Fig. 3 is the structural representation of female joint assembly.
1st, female joint assembly, 2, pin end assembly, 3, pin end supporter, 4, righting shell, 5, weighted lever assembly, 6,
One flow channels, the 7, second flow channels, 8, gap；
1.1st, female connector, 1.2, upper connection swivel nut, 1.3, hexagon socket cap head screw, 1.4, female joint outer barrel, 1.5,
Balance connected set, 1.6, nut, 1.7, lower connection swivel nut, 1.8, leaf spring, 1.9, interior coupling head, 1.10, gear earth rubber set, 1.11, anti-
Ship and resell on another market, 1.12, female dead ring, 1.13, connect electric ring body, 1.14, excluder ring, 1.15, locating ring, 1.16, guide head, 1.17, female
Dummy piston；
2.1st, connector, 2.2, dead ring 1,2.3, conducting ring, 2.4, lengthen ring, 2.5, center pull rod, 2.6, guide cone,
2.7th, pin end swivel nut, 2.8, plunger case, 2.9, nut, 2.10, dummy piston, 2.11, oil filler plug, 2.12, pin end anti-rotation
Pin, 2.13, pin end pressure-bearing body, 2.14, pin end connector, 2.15, locking catch.
Embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit scope of the present utility model.
As shown in figure 1, one kind has the digital dispensing downhole cable wet joint instrument of cable, it includes docking lower body and to connecting
Body, docking lower body includes pin end supporter 3, righting shell 4 and pin end assembly 2；Docking upper body includes the He of female joint assembly 1
Weighted lever assembly 5.
The pin end supporter 3 of docking lower body is primarily used to fix pin end assembly 2, excessively stream and connection bottom working pipe
Post；Righting shell 4 is mainly used to righting and connection tubing string when male and female connector assembly 1 is docked；Pin end assembly 2 is for even
Connect working string cable；Locking device mainly plays locking after male and female connector assembly 1 is docked.
The female joint assembly 1 of docking upper body mainly passes through cable connection ground control unit；Weighted lever assembly 5 is mainly used to
Righting and exacerbation effect when male and female joint is docked.The O-ring seal that respective model is respectively adopted between each section realizes sealing.
One end of weighted lever assembly 5 and cable connection, the other end of weighted lever assembly 5 connect with the upper joint sleeve of female joint assembly 1
Connect, inside is connected by wire, and the other end of female joint assembly 1 is docked with docking the pin end assembly 2 of lower body, dress is locked after docking
Put and lock pin and box sub assembly 1, after pin end assembly 2 and the connection of female joint assembly 1, the inside of pin end assembly 2 and mother
The inside of connector assembly 1 is seal cavity.Specifically, the locking catch on pin end assembly 2 is locked with the guide head of female joint assembly 1
Tightly.One end of pin end assembly 2 of docking lower body is docked with female joint assembly 1, and the other end passes through pin end adapter sleeve and pin end
The connection of the internal thread of supporter 3 passes through connected with outer casing swivel nut and righting shell 4 one using O-ring seal sealing, pin end supporter 3
The internal thread connection at end is connected using O-ring seal sealing, the other end tubing thread of righting shell 4 with conveying oil pipe；Pin end branch
The other end of support body 3 is connected with underground work instrument, and side opening cable conduction terminal is turned on by cable connector and cable connection to be believed
Number.
The pin end assembly 2 is arranged in the righting shell 4 with female joint assembly 1, the weighted lever assembly 5
One end extend into the righting shell 4 from the top of righting shell 4 and is connected with the female joint assembly 1, the weighted lever
The other end and cable connection of assembly 5.
The inwall of the outer wall and righting shell 4 of the weighted lever assembly 5 is sticked together, the outer wall of the weighted lever assembly 5
Offer groove, inwall the first flow channels 6 of formation of groove and righting shell 4；
Gap 8 is left between the outer wall of the female joint assembly 1 and the inwall of righting shell 4；Gap 8 and first, which is crossed, circulates
Road 6 is connected.
The pin end supporter 3 is fixedly connected with the bottom of righting shell 4；For example：The pin end supporter 3 is with helping
The bottom of positive shell 4 is fixed anti-rotation by threaded collar and connected.
One end of the pin end supporter 3 extend into the righting shell 4 and is connected with the pin end assembly 2,
The inside of pin end supporter 3 is provided with through hole, forms the second flow channels 7, and one end of the second flow channels 7 is connected with gap,
The other end of second flow channels 7 and the internal diameter of working string are connected.Second flow channels 7 are relative to pin end supporter 3
Axis is tilted.
The main function of pin end assembly 2 is to be turned on underground instrument signal and the conducting ring of pin end assembly 2 by cable, female
The main effect of connector assembly 1 is to connect ground testing system by cable, believes downhole instrument after being docked with pin end assembly 2
Number with ground testing system turn on.One end of pin end assembly 2 is provided with locking catch 2.15, and one end of female joint assembly 1 is provided with guiding
First 1.16, groove and the boss on locking catch 2.15 of guide head 1.16 are detachably connected；The other end of pin end assembly 2 passes through electricity
Cable is connected with downhole instrument, and the other end of female joint assembly 1 is connected by cable with ground testing system.
As shown in Fig. 2 pin end assembly 2 includes connector 2.1, electric conductor component, (electric conductor component includes dead ring
2.2nd, conducting ring 2.3 and lengthening ring 2.4, center pull rod 2.5, guide cone 2.6, plunger case 2.8, dummy piston 2.10, pin end
Pressure-bearing body 2.13, pin end connector 2.14, pin end swivel nut 2.7 and locking catch 2.15.
One end of center pull rod 2.5 is threadedly coupled with connector 2.1, and dead ring 2.2, conducting ring 2.3, lengthening ring 2.4 are pacified
Load onto pin end stop pin 2.12, then be sequentially sleeved in center pull rod 2.5 and with the grafting of connector 2.1, specifically, dead ring
2.2 with the grafting of connector 2.1；The other end of center pull rod 2.5 is threadedly coupled with the smaller diameter end of guide cone 2.6, center pull rod
2.5 two ends external screw thread is rotatably connected with the internal thread of guide cone 2.6 by connector 2.1 and compresses dead ring 2.2, conducting ring
2.3rd, lengthening ring 2.4 seals against each other it.
The larger diameter end of guide cone 2.6 carries one end grafting of dummy piston 2.10 with plunger case 2.8, and spiral shell is used on circumference
Nail is fixed, other end connection pin end pressure-bearing body 2.13 and the pin end connector 2.14 of plunger case 2.8, and screw is used on circumference
Fixed, the other end endoporus of pin end connector 2.14 installs sealing-plug, and the middle conductive contact of sealing-plug is by wire with leading
Electric ring 2.3 is turned on, and pin end swivel nut 2.7 is installed on the both sides external diameter of pin end connector 2.14, locking catch 2.15 is small from guide cone 2.6
Diameter end is passed through and is connected with pin end swivel nut 2.7.
The electric conductor component can also be provided with multigroup provided with one group.When electric conductor component provided with it is multigroup when, it is adjacent
Conducting ring assemblies be plugged into along the vertical direction together.
As shown in figure 3, further, female joint assembly 1 is mainly outside female connector 1.1, lower connection swivel nut 1.7, female joint
Cylinder 1.4, balance connected set 1.5, interior coupling head 1.9, female dummy piston 1.17, the conductive ferrule group used cooperatively with electric conductor component
Part (conductive ferrule component includes female dead ring 1.12, excluder ring 1.14, connects electric ring body 1.13 and leaf spring 1.8), locating ring 1.15
With guide head 1.16.
One end of female connector 1.1 and one end grafting of balance connected set 1.5, the other end of balance connected set 1.5 couple with interior
First 1.9 one end grafting equipped with female dummy piston 1.17, one end of the other end of interior coupling head 1.9 and female dead ring 1.12 is inserted
Connect, the inner side of female dead ring 1.12 installs excluder ring and connects electric ring body 1.13, and leaf spring 1.8 is installed in the inner side for connecing electric ring body 1.13,
The other end of female dead ring 1.12 is with being equally mounted with excluder ring and connecing another female grafting of dead ring 1.12 of electric ring body 1.13；
Four groups of female dead ring 1.12, excluder rings are installed altogether, electric ring body 1.13 and stop pin are connect with leaf spring 1.8, last group is female absolutely
Stop pin and locating ring grafting are installed in the end of edge ring 1.12, finally connect and are enclosed in female joint outer barrel 1.4 by more than, pass through mother
Lower connection swivel nut 1.7 on joint outer barrel 1.4 is connected with one end internal thread of female joint outer barrel 1.4, female joint shell it is another
End is connected with guide head 1.16.All sealings install sealing using O-ring seal sealing, the other end endoporus of female connector 1.1
Conductive contact one end is turned on by wire with connecing electric ring body 1.13 in the middle of plug, sealing-plug.
The electric conductor component is consistent with the number of conducting ring assemblies.It is adjacent when the conductive ferrule component is provided with multiple
Conductive ferrule component be plugged in together by female dead ring 1.12.
In the description above, sealed in each splicing position using sealing ring, so that when pin end assembly 2 and female joint are total
Into after 1 connection, 1 pair of the inside of pin end assembly 2 and female joint assembly are connected in the cavity of inner sealing.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (8)
1. one kind has the digital dispensing downhole cable wet joint instrument of cable, it is characterised in that including docking lower body and docking upper body,
Docking lower body includes pin end supporter (3), righting shell (4), pin end assembly (2)；Docking upper body includes female joint assembly
(1), weighted lever assembly (5)；
One end of the pin end assembly (2) is provided with locking catch (2.15), and one end of the female joint assembly (1) is provided with guide head
(1.16), the groove of the guide head (1.16) constitutes dismountable locking device with the boss on the locking catch (2.15)；
After pin end assembly (2) and female joint assembly (1) are connected, the inside of pin end assembly (2) and female joint assembly (1) are right
It is connected into the cavity of inner sealing；
The pin end assembly (2) is arranged in the righting shell (4) with female joint assembly (1), the weighted lever assembly
(5) one end extend into the righting shell (4) from the top of righting shell (4) and is connected with the female joint assembly (1),
The other end and cable connection of the weighted lever assembly (5)；
The inwall of the outer wall and righting shell (4) of the weighted lever assembly (5) is sticked together, outside the weighted lever assembly (5)
Wall offers groove, inwall the first flow channels of formation (6) of groove and righting shell (4)；
Gap (8) is left between the outer wall of the female joint assembly (1) and the inwall of righting shell (4)；Gap and the first excessively stream
Passage (6) is connected；
The pin end supporter (3) is fixedly connected with the bottom of righting shell (4)；
One end of the pin end supporter (3) extend into the righting shell (4) and connected with the pin end assembly (2)
Connect, the inside of pin end supporter (3) is provided with through hole, form the second flow channels (7), one end of the second flow channels (7) with
Gap (8) is connected, and the other end of the second flow channels (7) and the internal diameter of working string are connected.
2. one kind has the digital dispensing downhole cable wet joint instrument of cable according to claim 1, it is characterised in that the public affairs
Connector assembly (2) include connector (2.1), electric conductor component, center pull rod (2.5), guide cone (2.6), plunger case (2.8),
Dummy piston (2.10), pin end pressure-bearing body (2.13), pin end connector (2.14), pin end swivel nut (2.7) and locking catch
(2.15)；
One end of the center pull rod (2.5) is threadedly coupled with the connector (2.1), and the electric conductor assembly set is in described
On heart pull bar (2.5), the bottom of the electric conductor component and the connector (2.1) grafting, the center pull rod (2.5) it is another
One end is threadedly coupled with the smaller diameter end of the guide cone (2.6)；The larger diameter end of the guide cone (2.6) and the plunger case
(2.8) dummy piston (2.10) one end grafting, the other end connection pin end pressure-bearing body (2.13) of the plunger case (2.8) are carried
With pin end connector (2.14), the other end endoporus of the pin end connector (2.14) installs sealing-plug, the sealing-plug
Middle conductive contact install public by wire and electric conductor element turns, on the external diameter of pin end connector (2.14) both sides
Union unt (2.7), the locking catch (2.15) passes through and the pin end swivel nut from the guide cone (2.6) smaller diameter end
(2.7) connect, sealed in each splicing position using sealing ring.
3. one kind has the digital dispensing downhole cable wet joint instrument of cable according to claim 2, it is characterised in that described to lead
Electric body component includes dead ring (2.2), conducting ring (2.3) and lengthens ring (2.4), the dead ring (2.2), conducting ring (2.3)
It is sequentially sleeved in from down to up in the center pull rod (2.5) with ring (2.4) is lengthened, the dead ring (2.2) and the connector
(2.1) grafting, the conducting ring (2.3) and dead ring (2.2) grafting, lengthen ring (2.4) and conducting ring (2.3) grafting；It is described
The middle conductive contact of sealing-plug is turned on by wire and conducting ring (2.3)；Sealed in each splicing position using sealing ring.
4. one kind has the digital dispensing downhole cable wet joint instrument of cable according to claim 3, it is characterised in that described to lead
Electric body component is provided with multigroup, and adjacent conducting ring assemblies are plugged into together along the vertical direction, in each splicing position using sealing
Circle sealing.
5. having the digital dispensing downhole cable wet joint instrument of cable according to the described one kind of any one of claim 2-4, its feature exists
In the female joint assembly (1) is mainly by female connector (1.1), lower connection swivel nut (1.7), female joint outer barrel (1.4), balance
Connected set (1.5), interior coupling head (1.9), female dummy piston (1.17), the conductive ferrule component used cooperatively with electric conductor component,
Locating ring (1.15) and guide head (1.16)；
One end of female connector (1.1) and one end grafting of the balance connected set (1.5), the balance connected set (1.5)
The other end and one end grafting equipped with female dummy piston (1.17) of the interior coupling head (1.9), the interior coupling head
(1.9) one end grafting of the other end and conductive ferrule component；
The balance connected set (1.5), interior coupling head (1.9), female dummy piston (1.17) and conductive ferrule component are arranged at institute
State in female joint outer barrel (1.4), female connector (1.1) by lower connection swivel nut (1.7) thereon and the female joint outside
One end internal thread connection of cylinder (1.4), the other end of the female joint shell is connected with the guide head (1.16)；
Sealed in each splicing position using sealing ring；
The electric conductor component is consistent with the number of conducting ring assemblies.
6. one kind has the digital dispensing downhole cable wet joint instrument of cable according to claim 5, it is characterised in that described to lead
Electric ring body component includes female dead ring (1.12), excluder ring (1.14), connects electric ring body (1.13) and leaf spring (1.8)；
The other end of the interior coupling head (1.9) and one end grafting of female dead ring (1.12), female dead ring
(1.12) inner side installs excluder ring (1.14) and connects electric ring body (1.13), and leaf spring is installed in the inner side for connecing electric ring body (1.13)
(1.8)；Sealed in each splicing position using sealing ring.
7. one kind has the digital dispensing downhole cable wet joint instrument of cable according to claim 6, it is characterised in that described to lead
Electric ring body component is provided with multiple, and adjacent conductive ferrule component is plugged in together by female dead ring (1.12), in each grafting
Place is sealed using sealing ring.
8. having the digital dispensing downhole cable wet joint instrument of cable according to the described one kind of any one of claim 1-4, its feature exists
In the pin end supporter (3) is fixed anti-rotation by threaded collar with the bottom of righting shell (4) and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349376.4U CN206409200U (en) | 2016-12-09 | 2016-12-09 | One kind has the digital dispensing downhole cable wet joint instrument of cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621349376.4U CN206409200U (en) | 2016-12-09 | 2016-12-09 | One kind has the digital dispensing downhole cable wet joint instrument of cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206409200U true CN206409200U (en) | 2017-08-15 |
Family
ID=59549713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621349376.4U Active CN206409200U (en) | 2016-12-09 | 2016-12-09 | One kind has the digital dispensing downhole cable wet joint instrument of cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206409200U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485943A (en) * | 2019-07-15 | 2019-11-22 | 中海油能源发展股份有限公司 | A kind of oil well downhole cable wet type docking facilities |
| CN114961676A (en) * | 2022-06-14 | 2022-08-30 | 东方宝麟科技发展(北京)有限公司 | Separate-layer water injection allocation method for cable preset in pipe and separate-layer water injection pipe column structure |
-
2016
- 2016-12-09 CN CN201621349376.4U patent/CN206409200U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110485943A (en) * | 2019-07-15 | 2019-11-22 | 中海油能源发展股份有限公司 | A kind of oil well downhole cable wet type docking facilities |
| CN110485943B (en) * | 2019-07-15 | 2020-11-06 | 中海油能源发展股份有限公司 | Wet-type butt joint device for underground cable for oil well |
| CN114961676A (en) * | 2022-06-14 | 2022-08-30 | 东方宝麟科技发展(北京)有限公司 | Separate-layer water injection allocation method for cable preset in pipe and separate-layer water injection pipe column structure |
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