CN204552711U - Hydraulic controlling type cable perforation safety device - Google Patents
Hydraulic controlling type cable perforation safety device Download PDFInfo
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- CN204552711U CN204552711U CN201520247024.7U CN201520247024U CN204552711U CN 204552711 U CN204552711 U CN 204552711U CN 201520247024 U CN201520247024 U CN 201520247024U CN 204552711 U CN204552711 U CN 204552711U
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Abstract
The utility model discloses a kind of hydraulic controlling type cable perforation safety device, comprise joint, described joint comprise connect successively top connection, center tap and lower contact, electric cap igniting line is provided with in joint, electric cap igniting line upper end is used for stube cable, lower end is for connecting electric cap, the piston component driven by well hydraulic coupling is provided with in center tap, piston component coordinate with electric cap igniting line control electric cap igniting line short circuit, path and off state, be provided with the governor motion for regulable control well hydraulic pressure force value in lower contact.The utility model carries out control circui by hydraulic pressure between cable connector and electric cap, thus avoids priming system unintended detonation, and achieves the linearly adjustable of controlled pressure, is applicable to different well ' s conditions.
Description
Technical field
The utility model relates to a kind of hydraulic controlling type cable perforation safety device, belongs to Oil/gas Well cable transmission perforation technical field.
Background technology
Oil/gas Well recovery process in, the mode of conventional cable transfer, implements perforation in the oil-gas Layer position of down-hole, oil gas is entered in pit shaft.In routine work, cable is directly connected with electric cap, and detonating fuse then one end connects electric cap, and one end connects perforating gun.During operation, after being suitable for cable transfer to predetermined level, logical scheduled current electrical turning detonator, detonating fuse ignited by electric cap, and detonating fuse ignites perforating bullet, thus realizes perforation, builds the passage of pit shaft and oil-gas Layer.Cable is directly connected with electric cap, there is very large potential safety hazard.To go into the well the initial period of conveying in ground-mounted stage and perforating gun, operating personnel is inevitable near priming system, and electric spark workpiece is in a good loop.If there is the situation such as equipment leakage or loop formation stray electrical current, then can cause priming system unintended detonation, cause great personnel casualty accidents.
In prior art, external geophysical service company then have developed the control module be connected between cable connector and electric cap, has current impulse to control formula, temperature control formula etc.Such control module generally designs according to the electric cap of offshore company oneself, and what formed after active module is not the path of conventional meaning, does not have a universality of electric cap.
In addition, China Patent Publication No. CN2661919 discloses a kind of safety device for underground blasting, publication date on December 08th, 2004.But also there are the following problems in application process: the structure design of (1) screw rod is non-adjustable, cause the linear also non-adjustable of controlled pressure, can not different well ' s conditions be applicable to.Meanwhile, vibrations of going into the well can affect the default control pressure of safety device.(2) hydraulic control performance, can not be tested by hydraulic pump and sensor on ground, causes piston component freedom of motion, controlled pressure cannot not set accurately.(3) lower contact assembly while insulation, can not realize heatproof, the function such as withstand voltage.When causing ground pressure testing, after turning on lower contact, directly cannot adjust screw rod in real time.Meanwhile, in the maintaining after down-hole uses, clear up more difficult.Need artificial HTHP sealant tape operation, add uncertainty.(4) piston movement is dumb, free.Meanwhile, demand fulfillment coordinates requirement to the height of more than three parts, in processing or assembling process, easily occurs that piston component is stuck, causes the situation that safety device cannot normally work.
Summary of the invention
The purpose of this utility model is the problems referred to above overcoming prior art existence, provides a kind of hydraulic controlling type cable perforation safety device.The utility model carries out control circui by hydraulic pressure between cable connector and electric cap, thus avoids priming system unintended detonation, and achieves the linearly adjustable of controlled pressure, is applicable to different well ' s conditions.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of hydraulic controlling type cable perforation safety device, it is characterized in that: comprise joint, described joint comprise connect successively top connection, center tap and lower contact, electric cap igniting line is provided with in joint, electric cap igniting line upper end is used for stube cable, lower end is for connecting electric cap, the piston component driven by well hydraulic coupling is provided with in center tap, piston component coordinate with electric cap igniting line control electric cap igniting line short circuit, path and off state, be provided with the governor motion for regulable control well hydraulic pressure force value in lower contact.
Described piston component comprises piston cylinder, piston rod and support bar, piston cylinder slipper seal is arranged in center tap, piston rod to be fixedly installed in piston cylinder and to insulate with piston cylinder, support bar is fixedly connected with piston cylinder and insulate with piston rod, support bar is provided with return spring, spacing step place on support bar outer wall, return spring one end, the spacing step place in lower contact of the other end.
Described center tap is provided with the import of well hydraulic coupling, piston cylinder outer wall is provided with and coordinates with the import of well hydraulic coupling the step surface that piston component is moved downward.
Described electric cap igniting line comprises upper contact head, the first bronze medal post, closed cap, the second bronze medal post and lower contact, upper contact head upper end stube cable, lower end is connected with the first bronze medal post by the first spring, first bronze medal post is fixedly connected with closed cap, piston rod upper end is fixedly connected with closed cap, lower end is connected with the second bronze medal post by the second spring, and the second bronze medal post is by governor motion and lower contacts mates, and lower contact is for connecting electric cap.
Described governor motion is between the second bronze medal post and lower contact, and governor motion comprises the nut on swivel nut, the screw rod coordinated with swivel nut and screw rod, and lower contact is fixedly installed on swivel nut, and when the second bronze medal post contacts with screw rod, electric cap igniting line is in channel status.
When described piston component does not move, closed cap and top connection contact internal walls, the second bronze medal post does not contact with screw rod, and electric cap igniting line is in short-circuit condition.
Described piston component moves downward and the second bronze medal post does not contact with screw rod time, closed cap does not contact with top connection inwall, and electric cap igniting line is in off state.
Described piston component moves downward and the second bronze medal post contacts with screw rod time, closed cap does not contact with top connection inwall, and electric cap igniting line is in channel status.
Be provided with the step coordinated with closed cap in described top connection, when closed cap contacts with step, electric cap igniting line is in short-circuit condition.
Described upper contact head upper end is positioned at outside top connection, and lower end is positioned at top connection, upper contact head and the first bronze medal post all with top connection inner wall insulation, the second bronze medal post to be arranged in support bar and to insulate with support bar, and lower contact upper end is positioned at lower contact, and lower end is positioned at outside lower contact.
Novel advantage is adopted to be:
One, the utility model is connected between cable connector and electric cap and carries out control circui by hydraulic pressure, thus avoids priming system unintended detonation.
Two, the utility model can realize at ground-mounted stage and the initial period of going into the well, cable core ground connection, release stray electrical current, and electric cap and cable core are disconnected, thus has ensured the safety of operating personnel.
Three, the utility model is by the position of adjusting screw(rod), well hydraulic coupling needed for Circuit tuning switches, and spare interface, pressure testing operation can be carried out on ground, to guarantee the accurate, reliable of underground work, thus under the prerequisite ensureing cable perforation operating personnel safety, substantially increase the universality of this device, reliability, ease for use.
Four, the utility model is compared with CN2661919, has the following advantages:
(1) structure design of screw rod, makes it independent, adjustable, thus achieves the linearly adjustable of controlled pressure, is applicable to different well ' s conditions.Meanwhile, swivel nut defines the direction of motion of screw rod for axial, and after adjustment screw rod, relies on nut to lock, and fix its axial location, thus guarantee is gone into the well, vibrations do not affect default control pressure of the present utility model.
(2) the well hydraulic coupling import on center tap is metal sealing screw thread, thus makes hydraulic control performance, can be tested, guarantee that the setting of piston component freedom of motion, controlled pressure is accurate on ground by hydraulic pump and sensor.
(3) insulation and sealing realize by arranging insulating polymeric material, make lower contact while insulation, can realize heatproof, the function such as withstand voltage.Thus when making ground pressure testing, after turning on lower contact, directly can adjust screw rod in real time.Meanwhile, in the maintaining after down-hole uses, only need simple cleaning and reusable.No longer need artificial HTHP sealant tape operation, avoid the uncertainty of human factor.
(4) fitting face of piston component, concentrates design in center tap part, ensures that piston movement flexibly, freely.Meanwhile, eliminate and requirement is coordinated to the height of more than three parts, can, in processing or assembling process, effectively avoid piston component be stuck and cause the situation that safety device cannot normally work.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Fig. 2 is operating principle schematic diagram of the present utility model
Be labeled as in figure: 1, upper contact head, 2, back-up ring 3, first spring, 4, insulating polymeric material, the 5, first bronze medal post, 6, top connection, 7, closed cap, 8, center tap, 9, nut, 10, screw rod, 11, plug screw, 12, piston cylinder, 13, piston rod, 14, support bar, 15, lower contact, the 16, second spring, 17, retaining ring, 18, return spring, the 19, second bronze medal post, 20, joint cap, 21, the import of well hydraulic coupling, 22, helmet, 23, swivel nut, 24, lower contact.
Detailed description of the invention
Embodiment 1
A kind of hydraulic controlling type cable perforation safety device, comprise joint, described joint comprise connect successively top connection 6, center tap 8 and lower contact 15, electric cap igniting line is provided with in joint, electric cap igniting line upper end is used for stube cable, lower end is for connecting electric cap, the piston component driven by well hydraulic coupling is provided with in center tap 8, piston component coordinate with electric cap igniting line control electric cap igniting line short circuit, path and off state, be provided with the governor motion for regulable control well hydraulic pressure force value in lower contact 15.
In the present embodiment, described piston component comprises piston cylinder 12, piston rod 13 and support bar 14, piston cylinder 12 slipper seal is arranged in center tap 8, piston rod 13 to be fixedly installed in piston cylinder 12 and to insulate with piston cylinder 12, support bar 14 is fixedly connected with piston cylinder 12 and insulate with piston rod 13, support bar 14 is provided with return spring 18, spacing step place on support bar 14 outer wall, return spring 18 one end, the spacing step place in lower contact 15 of the other end.
In the present embodiment, described center tap 8 is provided with well hydraulic coupling import 21, well hydraulic coupling import 21 place is provided with plug screw 11, piston cylinder 12 outer wall is provided with and coordinates with well hydraulic coupling import 21 step surface that piston component is moved downward.
In the present embodiment, described electric cap igniting line comprises upper contact head 1, first bronze medal post 5, closed cap 7, second bronze medal post 19 and lower contact 24, upper contact head 24 upper end stube cable, lower end is connected with the first bronze medal post 5 by the first spring 3, first bronze medal post 5 is fixedly connected with closed cap 7, and piston rod 13 upper end is fixedly connected with closed cap 7, and lower end is connected with the second bronze medal post 19 by the second spring 16, second bronze medal post 19 is coordinated with lower contact 24 by governor motion, and lower contact 24 is for connecting electric cap.
In the present embodiment, described governor motion is between the second bronze medal post 19 and lower contact 24, governor motion comprises the nut 9 on swivel nut 23, the screw rod 10 coordinated with swivel nut 23 and screw rod 10, lower contact 24 is fixedly installed on swivel nut 23, when second bronze medal post 19 contacts with screw rod 10, electric cap igniting line is in channel status.The helmet 22 that swivel nut 23 is arranged by lower contact 15 end is fixed, and lower contact 15 end is also provided with joint cap 20, and joint cap 20 is fixed in lower contact 15 by retaining ring 17.
In the present embodiment, when described piston component does not move, closed cap 7 and top connection 6 contact internal walls, the second bronze medal post 19 does not contact with screw rod 10, and electric cap igniting line is in short-circuit condition.
In the present embodiment, described piston component moves downward and the second bronze medal post 19 does not contact with screw rod 10 time, closed cap 7 does not contact with top connection 6 inwall, and electric cap igniting line is in off state.
In the present embodiment, described piston component moves downward and the second bronze medal post 19 contacts with screw rod 10 time, closed cap does not contact with top connection 6 inwall, and electric cap igniting line is in channel status.
In the present embodiment, be provided with the step coordinated with closed cap 7 in described top connection 6, when closed cap 7 contacts with step, electric cap igniting line is in short-circuit condition.
In the present embodiment, described upper contact head 1 upper end is positioned at outside top connection 6, lower end be positioned at top connection 6 and by top connection 6 end arrange back-up ring 2 spacing, upper contact head 1 and the first bronze medal post 5 all with top connection 6 inner wall insulation, second bronze medal post 19 to be arranged in support bar 14 and to insulate with support bar 14, lower contact 24 upper end is positioned at lower contact 15, and lower end is positioned at outside lower contact 15.
Piston component is when free state, and its closed cap 7, by contacting with top connection 6, realizes cable core and is directly connected in top connection 6, forms short circuit; Its second bronze medal post 19 does not contact with lower contact 24, forms open circuit.Under predetermined well hydraulic coupling, piston component, by overcoming the pressure of return spring 18, moves downward, and closed cap 7 is separated with top connection 6, forms open circuit; Its second bronze medal post 19 contacts with lower contact 24, then form path.
Embodiment 2
Below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in the figure, described top connection 6 is connected with upper end instrument and cable by screw thread, forms soft contact, ensure the connection of circuit by the first spring 3 with upper contact head 1.
Described center tap 8 uses rolling and processing inwall, ensures that roughness is less than 0.8, and axiality higher than 0.04, thus ensures that piston component motion flexibly, freely.
Described piston component, by the design of step surface, makes well liquid promote the lower resistance that can overcome return spring 18, moves downward, thus cut off the contact of closed cap and top connection, connect the second bronze medal post 19 and screw rod 10 simultaneously, form path.
Described return spring 18 can when pressure be less than its elastic force (ground-mounted stage and initial period of going into the well), remain closed cap 7 to contact with top connection 6, form short-circuit condition, disconnect the second bronze medal post 19 and screw rod 10 simultaneously, form off state, thus realize the loop of physical break electric cap, ensure personal security.
Described lower contact 15 and joint cap 20, retaining ring 17 etc., for the joint and seal with lower end device.
Described screw rod 10 is for regulating the controlled pressure value of safety device.Described nut and swivel nut are for limiting the position of screw rod, and auxiliary adjustment.Sealing performance and the external insulation performance for realizing safety device is coordinated by existing insulating polymeric material 4 and O shape circle.
Operating principle of the present utility model is:
By safety device by after the mode lower going-into-well cylinder of cable transmission.Due to the effect of well hydraulic coupling P, piston component will have the trend moved downward.When well hydraulic coupling enough overcomes the initial elastic force of return spring, closed cap moves down, and no longer contacts with top connection, and original cable core short-circuit condition is removed.And now, due to the effect of the first spring, the first bronze medal post is still connected with closed cap.
Treat that well hydraulic coupling continues to raise, will promote piston component and continue descending, after arriving scheduled pressure value, the second bronze medal post will contact screw rod, now realize path, and cable core will be directly connected to the electric cap of below, forms loop.Now, pressure raises again, then support bar is by top in lower contact, stops piston component to continue motion.
If perforating job is due to unexpected failure, fail electrical turning detonator, when proposing well head, along with well hydraulic coupling reduces, return spring moves on promotions piston component, thus cuts off the connection of screw rod and the second bronze medal post, formation open circuit.Subsequently, closed cap also by move, contact top connection, thus makes the cable core short circuit of more than safety device, guarantees personal security.
Claims (10)
1. a hydraulic controlling type cable perforation safety device, it is characterized in that: comprise joint, described joint comprises the top connection (6) connected successively, center tap (8) and lower contact (15), electric cap igniting line is provided with in joint, electric cap igniting line upper end is used for stube cable, lower end is for connecting electric cap, center tap is provided with the piston component driven by well hydraulic coupling in (8), piston component coordinates with electric cap igniting line the short circuit controlling electric cap igniting line, path and off state, the governor motion for regulable control well hydraulic pressure force value is provided with in lower contact (15).
2. hydraulic controlling type cable perforation safety device according to claim 1, it is characterized in that: described piston component comprises piston cylinder (12), piston rod (13) and support bar (14), piston cylinder (12) slipper seal is arranged in center tap (8), piston rod (13) to be fixedly installed in piston cylinder (12) and to insulate with piston cylinder (12), support bar (14) is fixedly connected with piston cylinder (12) and insulate with piston rod (13), support bar (14) is provided with return spring (18), spacing step place on support bar (14) outer wall, return spring (18) one end, the spacing step place in lower contact (15) of the other end.
3. hydraulic controlling type cable perforation safety device according to claim 2, it is characterized in that: described center tap (8) is provided with well hydraulic coupling import (21), piston cylinder (12) outer wall is provided with and coordinates with well hydraulic coupling import (21) step surface that piston component is moved downward.
4. the hydraulic controlling type cable perforation safety device according to Claims 2 or 3, it is characterized in that: described electric cap igniting line comprises upper contact head (1), first bronze medal post (5), closed cap (7), second bronze medal post (19) and lower contact (24), upper contact head (1) upper end stube cable, lower end is connected with the first bronze medal post (5) by the first spring (3), first bronze medal post (5) is fixedly connected with closed cap (7), piston rod (13) upper end is fixedly connected with closed cap (7), lower end is connected with the second bronze medal post (19) by the second spring (16), second bronze medal post (19) is coordinated with lower contact (24) by governor motion, lower contact (24) is for connecting electric cap.
5. hydraulic controlling type cable perforation safety device according to claim 4, it is characterized in that: described governor motion is positioned between the second bronze medal post (19) and lower contact (24), governor motion comprises the nut (9) on swivel nut (23), the screw rod (10) coordinated with swivel nut (23) and screw rod (10), lower contact (24) is fixedly installed on swivel nut (23), when second bronze medal post (19) contacts with screw rod (10), electric cap igniting line is in channel status.
6. hydraulic controlling type cable perforation safety device according to claim 5, it is characterized in that: when described piston component does not move, closed cap (7) and top connection (6) contact internal walls, the second bronze medal post (19) does not contact with screw rod (10), and electric cap igniting line is in short-circuit condition.
7. hydraulic controlling type cable perforation safety device according to claim 5, it is characterized in that: described piston component moves downward and the second bronze medal post (19) does not contact with screw rod (10) time, closed cap (7) does not contact with top connection (6) inwall, and electric cap igniting line is in off state.
8. hydraulic controlling type cable perforation safety device according to claim 5, it is characterized in that: described piston component moves downward and the second bronze medal post (19) contacts with screw rod (10) time, closed cap (7) does not contact with top connection (6) inwall, and electric cap igniting line is in channel status.
9. hydraulic controlling type cable perforation safety device according to claim 6, is characterized in that: be provided with the step coordinated with closed cap (7) in described top connection (6), and when closed cap (7) contacts with step, electric cap igniting line is in short-circuit condition.
10. hydraulic controlling type cable perforation safety device according to claim 4, it is characterized in that: described upper contact head (1) upper end is positioned at top connection (6) outward, lower end is positioned at top connection (6), upper contact head (1) and the first bronze medal post (5) all with top connection (6) inner wall insulation, second bronze medal post (19) to be arranged in support bar (14) and to insulate with support bar (14), lower contact (24) upper end is positioned at lower contact (15), and lower end is positioned at lower contact (15) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247024.7U CN204552711U (en) | 2015-04-22 | 2015-04-22 | Hydraulic controlling type cable perforation safety device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247024.7U CN204552711U (en) | 2015-04-22 | 2015-04-22 | Hydraulic controlling type cable perforation safety device |
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| CN204552711U true CN204552711U (en) | 2015-08-12 |
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| CN201520247024.7U Active CN204552711U (en) | 2015-04-22 | 2015-04-22 | Hydraulic controlling type cable perforation safety device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725010A (en) * | 2017-10-27 | 2018-02-23 | 西安石竹能源科技有限公司 | A kind of fusible single-core cable release device |
| CN108868653A (en) * | 2018-06-25 | 2018-11-23 | 中国石油集团渤海钻探工程有限公司 | A kind of safety joint for breakouting pack of dynamite downhole instrument |
-
2015
- 2015-04-22 CN CN201520247024.7U patent/CN204552711U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725010A (en) * | 2017-10-27 | 2018-02-23 | 西安石竹能源科技有限公司 | A kind of fusible single-core cable release device |
| CN108868653A (en) * | 2018-06-25 | 2018-11-23 | 中国石油集团渤海钻探工程有限公司 | A kind of safety joint for breakouting pack of dynamite downhole instrument |
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