CN108005586A - Attachment device and tubing nipple for non-stick direct type composite continuous oil pipe - Google Patents
Attachment device and tubing nipple for non-stick direct type composite continuous oil pipe Download PDFInfo
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- CN108005586A CN108005586A CN201711372951.1A CN201711372951A CN108005586A CN 108005586 A CN108005586 A CN 108005586A CN 201711372951 A CN201711372951 A CN 201711372951A CN 108005586 A CN108005586 A CN 108005586A
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- inner tube
- direct type
- cable unit
- type composite
- continuous oil
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/023—Arrangements for connecting cables or wirelines to downhole devices
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- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The present invention provides a kind of attachment device and tubing nipple for non-stick direct type composite continuous oil pipe, attachment device includes inner tube, outer tube and seal assembly, inner tube close to upper end outer wall outwardly convex formed with peripheral flange, it is provided with multiple first perforation, the upper end of outer tube limits annular groove with peripheral flange, when the core pipe of non-stick direct type composite continuous oil pipe is set in outside inner tube, pillar presses between the inner and outer pipe sections, the upper end of multi-strand cable unit is stretched into annular groove, the lead wire cable that lower end is stretched into annular groove and is electrically connected with cable unit is worn in multiple first perforation respectively, seal assembly is connected with peripheral flange and outer tube, annular groove forms with seal assembly the abutment of the upper end of multi-strand cable unit and the lower end of multiple lead wire cables being contained in sealed chamber therein.The present invention is suitable for the cable of the Rodless oil extraction system of huge discharge and the assembling of non-stick direct type composite continuous oil pipe, so as to fulfill the sealing and protection to cable.
Description
Technical field
The present invention relates to Rodless oil extraction equipment technical field, more particularly to it is a kind of for huge discharge Rodless oil extraction system
The attachment device and tubing nipple of non-stick direct type composite continuous oil pipe.
Background technology
The description of this part is only provided discloses relevant background information with the present invention, without forming the prior art.
Compared to there is bar oil recovery technique, Rodless oil extraction technology is promoted because having greater advantage in energy-saving square face should
With.
However, Rodless oil extraction technology locks into the influence of oily in-tube fouling or wax deposition, its average pump detection period can not obtain
Effectively extend.To solve the above problems, Rodless oil extraction technology introduces coiled tubing made of composite material, (abbreviation is compound continuous
Oil pipe).The inner surface of composite continuous oil pipe is relatively smooth, can effectively prevent fouling and wax deposition, and power cable and signal cable
It can be laid in composite continuous oil pipe, avoid in conventional oil pipe operation in the process of oil pipe outer surface fixed cable, significantly carry
Rise operating efficiency.Non-stick direct type multiple tube is a kind of current common composite continuous oil pipe type, and each layer is all on its cross section
Can Relative sliding, advantage is the bending radius that can obtain smaller.
The sectional area of cable used in Rodless oil extraction technology correspondingly increases with the increase of its discharge capacity, in simple terms,
The discharge capacity of amount Rodless oil extraction system is bigger, and cable is thicker.But in practice, the internal diameter size of pit shaft is typically certain, then well
The size of the non-stick direct type multiple tube housed in cylinder unconfined can not possibly increase to be adapted to the increase of cable sectional area.From
And how to realize the assembling of the cable and non-stick direct type composite continuous oil pipe to the Rodless oil extraction system suitable for huge discharge, with
And sealing and protection of the realization to cable, it is technical problem urgently to be resolved hurrily.
It should be noted that the introduction to technical background above be intended merely to it is convenient technical scheme is carried out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes the present invention
Background section is set forth and thinks that above-mentioned technical proposal is known to those skilled in the art.
The content of the invention
Based on foregoing prior art defect, the present invention provides a kind of connection for non-stick direct type composite continuous oil pipe
Device and tubing nipple, suitable for the assembling of cable and the non-stick direct type composite continuous oil pipe of the Rodless oil extraction system of huge discharge,
Realize the sealing and protection to cable.
To achieve these goals, the present invention provides following technical solution.
A kind of attachment device for non-stick direct type composite continuous oil pipe, the non-stick direct type composite continuous oil pipe include core
The pillar outside the core pipe is managed and be set in, multi-strand cable unit, per share institute are folded between the core pipe and the pillar
Stating cable unit includes more cables；The attachment device includes：
Inner tube, the outer tube and seal assembly being set in outside said inner tube, said inner tube can be arranged for the core pipe, described
Inner tube close to upper end outer wall outwardly convex formed with peripheral flange, multiple first perforation are provided with the peripheral flange, it is more
A first perforation is corresponding with cable unit described in multiply；The upper end of the outer tube limits one with the peripheral flange and opens
The annular groove opened, when the core pipe of the non-stick direct type composite continuous oil pipe is set in outside said inner tube, the pillar pressing
Between said inner tube and the outer tube, the upper end of cable unit described in multiply is extended into the annular groove, Duo Gesuo
State and be equipped with lead wire cable in the first perforation respectively, the lower end of multiple lead wire cables is extended into the annular groove simultaneously
Be electrically connected respectively with cable unit described in multiply, the both ends of the seal assembly respectively with the peripheral flange and the outer tube
Side wall close to upper end is connected, so that the annular groove is formed the upper of cable unit described in multiply with the seal assembly
The abutment of end and the lower end of multiple lead wire cables is contained in sealed chamber therein.
Preferably, the upper end of the outer tube bends inwards to form bending part, circumferentially along having and multiply on the bending part
Accordingly recess, the recess are set in described the cable unit in the core pipe of the non-stick direct type composite continuous oil pipe
The cable unit is pressed together on the outer wall of said inner tube by pipe when outer.
Preferably, connector is further included, outer wall of the connector close to lower end stretches out to form connecting portion, the company
Socket part is connected with the peripheral flange, is provided with the connecting portion and accordingly second is worn with multiple first perforation
Hole, second perforation are connected with accordingly first perforation；
The lead wire cable is plugged in first perforation and the second perforation of corresponding connection, and the lead wire cable
Upper end is extended to outside second perforation, and lower end is extended into the sealed chamber.
Preferably, the cutting ferrule being sealed against is provided with second perforation, the lead wire cable fixation is threaded through described
In cutting ferrule.
Preferably, the seal assembly includes：
Packing element, the solid peripheral flange in upper end top of the packing element, lower end is set in outside the outer tube；
The multiple wedge shapes watt being set in outside the packing element, the wall thickness of multiple wedge shapes watt are gradual along direction from bottom to up
Increase；
The fastening shield being set in outside multiple wedge shapes watt, its wall thickness gradually increase along direction from top to bottom；It is described
The lower end of fastening shield is set in outside the outer tube, and upper end is threadedly coupled with the peripheral flange, so that the fastening shield energy
Relatively described peripheral flange moves axially.
Preferably, retainer ring, shape between the inner wall of the retainer ring and the outer wall of said inner tube are arranged with outside said inner tube
Into there is gap；
The non-stick direct type composite continuous oil pipe, which further includes, is folded between the core pipe and the pillar and is located at multiply
The upper end of the core pipe and the pillar is stretched out in tensile layer on the outside of the cable unit, the upper end of the tensile layer；Work as institute
When stating core pipe and being set in outside said inner tube, the upper end of the tensile layer is through the gap and is pressed together on the pillar and described outer
Between pipe, cable unit described in multiply enters in the sealed chamber through the gap.
Preferably, the outer wall outwardly convex of said inner tube is formed with multiple first steps being axially distributed along it, and described
One step has the first mount surface towards the peripheral flange.
Preferably, the inner wall of the outer tube is inwardly protruding formed with multiple second steps being axially distributed along it, and described
Two steps have the second mount surface towards the peripheral flange.
A kind of tubing nipple, including：
Non-stick direct type composite continuous oil pipe, it includes：Core pipe and the pillar being set in outside the core pipe, the core pipe and
Multi-strand cable unit is folded between the pillar, the per share cable unit includes more cables；
Attachment device as described in any one above-mentioned embodiment, the core pipe are set in outside said inner tube, the pillar
It is pressed together between said inner tube and the outer tube, the upper end of cable unit described in multiply is extended into the annular groove, more
Lead wire cable is equipped with respectively in a first perforation, and the lower end of multiple lead wire cables extends into the annular groove
In and be electrically connected respectively with cable unit described in multiply, the both ends of the seal assembly respectively with the peripheral flange and described
Side wall of the outer tube close to upper end is connected, so that the annular groove is formed cable unit described in multiply with the seal assembly
Upper end and the abutments of lower end of multiple lead wire cables be contained in sealed chamber therein.
Preferably, retainer ring, shape between the inner wall of the retainer ring and the outer wall of said inner tube are arranged with outside said inner tube
Into there is gap；
The non-stick direct type composite continuous oil pipe, which further includes, is folded between the core pipe and the pillar and is located at multiply
The upper end of the core pipe and the pillar is stretched out in tensile layer on the outside of the cable unit, the upper end of the tensile layer；Work as institute
When stating core pipe and being set in outside said inner tube, the upper end of the tensile layer is through the gap and is pressed together on the pillar and described outer
Between pipe, cable unit described in multiply passes through the gap.
The attachment device of the embodiment of the present invention and the tubing nipple formed using the attachment device, by the upper of inner tube
End sets axial ledge, so that the annular groove that the upper end for the outer tube being set in outside outer tube is limited with axial ledge is open type
, even if in this way, the area of section for the cable that cable unit is included is larger, it also can preferably realize cable unit and lead wire
Cable is attached operation in open space.
And cable unit is completed with after the attended operation of lead wire cable, annular groove is sealed by seal assembly, you can real
The now sealing and protection at the abutment of the upper end to cable unit and the lower end of lead wire cable.
With reference to following explanation and attached drawing, the particular embodiment of the present invention is disclose in detail, specifies the principle of the present invention
Can be in a manner of adopted.It should be understood that the embodiment of the present invention is not so limited in scope.Will in appended right
In the range of the spirit and terms asked, the embodiment of the present invention includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in other embodiments, it is combined with the feature in other embodiments, or substitute the feature in other embodiments.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
Attached drawing described here is only used for task of explanation, and is not intended in any way to limit model disclosed by the invention
Enclose.In addition, shape and proportional sizes of each component in figure etc. are only schematical, the understanding of the present invention is used to help, and
It is not the specific shape and proportional sizes for limiting each component of the present invention.Those skilled in the art under the teachings of the present invention, can
To select various possible shapes and proportional sizes to implement the present invention as the case may be.In the accompanying drawings：
Figure 1A is the schematic cross-section of non-stick direct type composite continuous oil pipe；
The structure diagram that Figure 1B is connected between cable unit and lead wire cable；
Fig. 2 is not provided with structure diagram when connector and seal assembly for the attachment device of the embodiment of the present invention；
Fig. 2A is the overlooking the structure diagram of attachment device shown in Fig. 2；
Fig. 2 B are the structure diagram in the B-B faces of attachment device shown in Fig. 2；
Fig. 3 is the structure diagram of the attachment device of the embodiment of the present invention；
Fig. 4 is the structure diagram of the tubing nipple of the embodiment of the present invention；
Fig. 5 is the structure diagram of wedge shape watt；
Fig. 6 A to Fig. 6 F are the flow diagram for the tubing nipple for being assembled to form the embodiment of the present invention.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this area is common
Technical staff's all other embodiments obtained on the premise of creative work is not made, should all belong to guarantor of the present invention
The scope of shield.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood implication of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more phases
The arbitrary and all combination of the Listed Items of pass.
The present invention provides a kind of attachment device 200 for non-stick direct type composite continuous oil pipe 100, and apply the company
The tubing nipple that connection device 200 is formed.
As shown in Figure 1A, non-stick direct type composite continuous oil pipe 100 can include core pipe 101 and be set in outside core pipe 101
Pillar 102, core pipe 101 and pillar 102 are by deformable soft elastic material such as PE (polyethylene), PA (polyamide), PVDF
Polymer composites such as (Kynoar) is made.
Multi-strand cable unit 106 is folded between core pipe 101 and pillar 102, per share cable unit 106 can include more
The specific manifestation form of cable 106a, cable 106a can be copper core.
The quantity of cable unit 106 can be it is multiple (quantity that Figure 1A schematically illustrates cable unit 106 is 4,
But in practice, the quantity of cable unit 106 can according to circumstances carry out the adjustment of adaptability, and this is not limited by the present invention), it is more
Share of cable unit 106 circumferentially can uniformly arrange.
Likewise, 3 that the quantity of cable 106a is including but not limited to anticipated as shown in Figure 1A, in practice can be according to operating mode
Unrestricted choice matches, and this is not limited by the present invention.
In order to which the position of the more cable 106a included to cable unit 106 is fixed, core pipe 101 and pillar 102
Between can be folded with fixed bed 103, cable unit 106 is arranged in fixed bed 103.
In addition, down-hole liquid may be corroded caused by cable 106a in order to prevent, can be coated with outside cable 106a resistance to
Oil-insulation layer 105.
Also, in order to increase the contact area of cable unit 106 and fixed bed 103, cable unit 106 is together with being coated
Oil resistant insulating layer 105 in it is preferably set in the form of the rotation of spiral shell winding vertically, so as to avoid cable unit 106 from being included
More cable 106a vertically from fixed bed 103 be sliding out come.
Further, non-stick direct type composite continuous oil pipe 100 can also include being folded in fixed bed 103 and pillar 102 it
Between tensile layer 104, tensile layer 104 can be made of the larger soft elastic material of toughness, such as above-mentioned cited macromolecule
Composite material can meet the requirement.
It should be further noted that the upper end of tensile layer 104 and cable unit 106 can be from core pipe 101 and pillar
102 upper end is stretched out.Concrete operations can be that non-stick direct type composite continuous oil pipe 100 with attachment device 200 before being connected in whole
Body structure, is cut or is burnt by correspondingly strip operation such as knife, the upper end of tensile layer 104 and cable 106 is stripped out.
As shown in Figures 2 and 3, the attachment device 200 for non-stick direct type composite continuous oil pipe 100 can include inner tube
201st, the outer tube 202 and seal assembly 203 being set in outside inner tube 201, the energy core tube feeding 101 of inner tube 201 are arranged, and inner tube 201 is leaned on
The outer wall outwardly convex of nearly upper end is provided with multiple first perforation 201b formed with peripheral flange 201a in peripheral flange 201a,
Multiple first perforation 201b are corresponding with multi-strand cable unit 106.
The upper end of outer tube 202 limits a unlimited annular groove 204 with peripheral flange 201a, when the compound company of non-stick direct type
The core pipe 101 of continuous oil pipe 100 be set in inner tube 201 it is outer when, pillar 102 is pressed together between inner tube 201 and outer tube 202, multi cord
The upper end of cable unit 106 is extended into annular groove 204, and lead wire cable 205 is equipped with respectively in multiple first perforation 201b,
The lower end of multiple lead wire cables 205 extends into be electrically connected in annular groove 204 and respectively with multi-strand cable unit 106.
The structure of lead wire cable 205 can refer to the description to cable unit 106 above, both structures can be identical,
This is not repeated.
The connection mode of cable unit 106 and lead wire cable 205 as shown in Figure 1B, the more lines that cable unit 106 includes
Any one lower end for winding remaining cable 106a and lead wire cable 205 in cable 106a, by remaining cable 106a at coiling end
Left-hand thread is held to compress, finally in outer surface around upper insulating tape.
Alternatively, using machinery cold pressing connection, its principle is：Using seamless aluminium (copper) casing of cold-drawn and special Press Plier,
Casing is pressed on cable 106a and lead wire cable 205 using the pressure of Press Plier, makes casing and cable 106a and lead wire cable
Stress is produced between 205, reaches and combines closely, so as to form good conductive path.
The both ends of seal assembly 203 are connected with the side wall of peripheral flange 201a and outer tube 202 close to upper end respectively, so that
Annular groove 204 and seal assembly 203 are formed the upper end of multi-strand cable unit 106 and the lower end of multiple lead wire cables 205
Abutment is contained in sealed chamber 206 therein.
In the present embodiment, inner tube 201 and outer tube 202 are made of metal material.Especially, the metal of outer tube 202 is made
Material has preferable plastic deformation ability (such as can be alloy material), it can occur forever under the action of buckle machine
Plastic deformation so that non-stick direct type composite continuous oil pipe 100 core pipe 101 be set in inner tube 201 it is outer when, withheld generation
The outer tube 202 of permanent plastic deformation can compress non-stick direct type composite continuous oil pipe 100 and (specially compress the compound company of non-stick direct type
The core pipe 101 and pillar 102 of continuous oil pipe 100), realize the fixation of non-stick direct type composite continuous oil pipe 100 and this attachment device 200
Connection.
As shown in Figures 2 and 3, in order to further improve non-stick direct type composite continuous oil pipe 100 and this attachment device 200
Bonding strength, inner tube 201 and outer tube 202 can have the structure design for being used for increasing friction.
Specifically, can be, the outer wall outwardly convex of inner tube 201 be formed with multiple first steps being axially distributed along it
2013, first step 2013 has the first mount surface 2014 towards peripheral flange 201a.
The inner wall of pillar 102 is inwardly protruding formed with multiple second steps 2023 being axially distributed along it, second step
2023 have the second mount surface 2024 towards peripheral flange 201a.
First step 2013 and second step 2023 are respectively separated setting, so that the outer wall of inner tube 201 and outer tube 202
Inner wall is uneven.Since core pipe 101 and pillar 102 are made by soft elastic material, permanent plastic occurs in outer tube 202 in it
During deformation, core pipe 101 and pillar 102 can be extruded and deform, so as to be closely adhered to 201 outer wall of inner tube and outer respectively
On wall inner wall.
Nationality is acted on by the mounting of the first mount surface 2014 in face of peripheral flange 201a and the second mount surface 2024, Ke Yiji
Frictional force between 201 outer wall of the earth increase core pipe 101 and inner tube, 202 inner wall of pillar 102 and outer tube, so that non-stick direct type
Bonding strength of the composite continuous oil pipe 100 with this attachment device 200 vertically is further improved.
It is interior in order to further improve the bonding strength of non-stick direct type composite continuous oil pipe 100 and this attachment device 200
Retainer ring 207 can be arranged with outside pipe 201, formed with gap 208 between the inner wall of retainer ring 207 and the outer wall of inner tube 201.
When core pipe 101 be set in inner tube 201 it is outer when, the upper end of tensile layer 104 to pass through gap 208 and can be pressed together on pillar
Between 102 and outer tube 202, multi-strand cable unit 106, which passes through, to be entered to pass through gap 208 in sealed chamber 206.
By the drag interaction of tensile layer 104, upward effect can be applied to non-stick direct type composite continuous oil pipe 100
Power, it is disconnected de- so as to avoid non-stick direct type composite continuous oil pipe 100 and this attachment device 200 that connection occurs.
The concrete operations that tensile layer 104 is pressed together between retainer ring 207 and outer tube 202 are that the upper end of tensile layer 104 passes through
The inner side of retainer ring 207, is then turned over downwards and around the outside of retainer ring 207, between retainer ring 207 and outer tube 202,
Pillar 102 is applied again and withholds operation, after permanent plastic deformation occurs for pillar 102, radial contraction change occurs therewith for outer tube 202
Shape, so that tensile layer 104 is tightly pressed together between pillar 102 and outer tube 202.
On the one hand the peripheral flange 201a that outer wall outwardly convex of the inner tube 201 close to upper end is formed is used for and outer tube 202
Upper end limits annular groove 204, and the first perforation 201b in the sealing previous existence 206 being provided with is used to supply lead wire cable
205 wear.On the other hand, peripheral flange 201a is additionally operable to the connection with connector 209, to form the oil available for Practical Project
Pipe pipe nipple.
Specifically, outer wall of the connector 209 close to lower end can stretch out to form connecting portion 209a, the company formed with this
Socket part 209a is similar to flange arrangement.
The connecting portion 209a concrete modes that are connected with peripheral flange 2011 can be circumferentially uniformly to be set in connecting portion 209a
It is equipped with multiple through hole 209b.With reference to shown in refering to Fig. 2A, be provided with peripheral flange 2011 with multiple through hole 209b accordingly
Threaded hole 201c.
The perforation of the plurality of threaded hole 201c and multiple first 201b are staggered and non-interference, and multiple threaded hole 201c are along week
To uniform arrangement, multiple first perforation 201b circumferentially uneven arrangements.
Fastening bolt 210 is worn in through hole 209b, fastening bolt 210 is screwed in threaded hole 201c, so as to fulfill inner tube
201 with the connection of connector 209.
As shown in figure 3, further, the second perforation 209b, the second perforation 209b and first is provided with connecting portion 209a
Perforation 201b is connected, and lead wire cable 205 is plugged in the first perforation 201b and the second perforation 209b of corresponding connection, and is drawn and connect
The upper end of cable 205 is extended to outside the second perforation 209b, and lower end is extended into sealed chamber 206.
Further, the cutting ferrule 211 being sealed against can be provided with the second perforation 209b, cutting ferrule 211 is in hollow
The tubulose of passage, its lower end are plugged in the second perforation 209b and are threadedly coupled, and lead wire cable 205 is fixed and is threaded through in cutting ferrule 211.
As shown in Fig. 2 and Fig. 2 B, the upper end of outer tube 202 bends inwards to form bending part 202a, along week on bending part 202a
Have and the accordingly recess 202b of multi-strand cable unit 106, cores of the recess 202b in non-stick direct type composite continuous oil pipe 100 to edge
Pipe 101 be set in inner tube 201 it is outer when cable unit 106 is pressed together on the outer wall of inner tube 201.
The opening that core tube feeding 201 passes through is offered in the middle part of bending part 202a, multiple recess 202b are implementing to withhold operation
Before, the hole that cable unit 106 can be supplied to pass through is formed with 201 outer wall of core pipe, so that the upper end of cable unit 106 can enter
In annular groove 204.
After completing aforesaid operations, outer tube 202 is implemented to withhold operation, bending part 202a is together with outer tube 202, quilt at this time
Crimp, radially shrinks, so as to cable unit 106 is tightly pressed together on the outer wall of inner tube 201.
As shown in figure 3, seal assembly 203 can include：The solid peripheral flange in upper end top of packing element 203a, packing element 203a
201a, lower end are set in outside outer tube 202；The multiple wedge shape watt 203b being set in outside packing element 203a, multiple wedge shape watt 203b can edge
Radial contraction；The fastening shield 203c being set in outside multiple wedge shape watt 203b, the lower end of fastening shield 203c are set in outer tube 202
Outside, upper end is threadedly coupled with peripheral flange 201a, is moved axially so as to fasten the opposite peripheral flange 201a of shield 203c energy.
As shown in figure 5, wedge shape watt 203b substantially can be in circular arc housing shape, accordingly central angle is freely distributed according to quantity.
In practice, the quantity of wedge shape watt 203b can be 3, and the central angle of each wedge shape watt 203b is 120 degree.
The inner wall of wedge shape watt 203b can be provided with multiple groove 203d, be raised between two neighboring groove 203d
203e.In this way, a wedge-shaped watt 203b inner walls form rough surface, so as to increase the rubbing action to packing element 201a
Power, preferably realizes fastening effect.
Multiple wedge shape watt 203b are coated on outside packing element 203a in advance, its wall thickness gradually increases from bottom to up.Fasten shield
203c is cylindrical, its wall thickness gradually increases along direction from top to bottom.
Fasten inner walls of the shield 203c close to upper end and be provided with internal thread, correspondingly, peripheral flange 201a outer walls are provided with
External screw thread, so that axial movement can be realized by rotating by fastening shield 203c.
When fasten shield 203c screwed on peripheral flange 201a move up when, fasten the non-uniform inner walls of shield 203c
Radially inner pretightning force gradually can be applied to multiple wedge shape watt 203b, so that multiple wedge shape watt 203b occur radially to receive
Contracting, and then compress packing element 203a.
With reference to shown in Fig. 6 A to Fig. 6 F, the tubing nipple for the formation of attachment device 200 for utilizing the embodiment of the present invention is introduced
Workflow.
Step 1：
As shown in Figure 6A, the cable 106a and tensile layer of certain length are stripped out from non-stick direct type composite continuous oil pipe 100
104 so that the upper end of core pipe 101 and pillar 102 is stretched out in the upper end of cable 106a and tensile layer 104.
Step 2：
As shown in Figure 6B, retainer ring 207 is inserted in cable 106a and tensile layer 104, is close to the lower anchor ring of retainer ring 207
The upper surface of pillar 102, then outwards bypasses retainer ring 207, and negative drawing, tension by tensile layer 104.
Step 3：
As shown in Figure 6 C, the upper end that outer tube 202 is nested into the pillar 102 of non-stick direct type composite continuous oil pipe 100 is certain
Stop behind position, through cable 106a and the tensile layer just tensed 104.At the same time by cable 106a along 202 upper end bending part of outer tube
Recess 202b on 202a is pulled out, and keeps cable 106a in recess 202b.
Outer tube 202 is during being inserted in because the reason that tensile layer 104 turns up adds non-stick direct type composite continuous oil pipe 100
The diameter of upper end, so as to there is certain resistance.
Step 4：
As shown in Figure 6 D, inner tube 201 is pushed into using buckle machine, the upper end of cable unit 106 is extended into annular groove
In 204.The axial location of outer tube 202 is adjusted, outer tube 202 is withheld using buckle machine.
Step 5：
As illustrated in fig. 6e, connector 209 is installed, jump lead 205 is inserted into, to jump lead 205 in annular groove 204
Lower end and cable unit 106 upper end carry out patching operations.After certain stretching surplus is left to cable unit 106, utilize
Jump lead 205 is fixed on connector 209 by cutting ferrule 211.
Step 6：
As fig 6 f illustrates, the packing element 203a for being sleeved on outer tube 202 in advance is inserted in annular groove 204, accommodates 3 pieces of wedge shapes watt
203b, screws on fastening shield 203c, compresses wedge shape watt 203b, realize sealing.
So far, tubing nipple completes assembling.
The attachment device 200 of the embodiment of the present invention and the tubing nipple formed using the attachment device 200, by inside
The upper end of pipe 201 sets axial ledge 201a, so that the upper end for the outer tube 202 being set in outside outer tube 201 and axial ledge 201a
The annular groove 204 limited is open type, even if in this way, the area of section for the cable 106a that cable unit 106 is included
It is larger, it also can preferably realize that cable unit 106 is attached operation with lead wire cable 205 in open space.
And cable unit 106 is completed with after the attended operation of lead wire cable 205, it is recessed to seal annular by seal assembly 203
Groove 204, you can realize the sealing and protection at the abutment of the lower end to the upper end of cable unit 106 and lead wire cable 205.
It should be noted that in the description of the present invention, term " first ", " second " etc. are only used for description purpose and difference
Similar object, between the two and is not present sequencing, can not be interpreted as indicating or implying relative importance.In addition,
In description of the invention, unless otherwise indicated, " multiple " are meant that two or more.
Herein cited any digital value all include between lower limit to upper limit value with the lower value of an incremented and
The all values of upper value, there are the interval of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 21
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, it is 0.0001,0.001,0.01,0.1 suitably to think a unit.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all scopes all include all numerals between endpoint and endpoint.It is used together with scope
" about " or " approximation " be suitable for two endpoints of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", including at least the endpoint indicated.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
State, many embodiments and many applications outside the example provided all will be apparent for a person skilled in the art
's.Therefore, the scope of this teaching should not be determined with reference to foregoing description, but should with reference to preceding claims and these
The four corner of the equivalent that claim is possessed determines.Appointing for theme disclosed herein is omitted in preceding claims
Where face is not intended to abandon the body matter, also should not be considered as inventor and the theme is not thought of as to disclosed hair
A part for bright theme.
Claims (10)
1. a kind of attachment device for non-stick direct type composite continuous oil pipe, the non-stick direct type composite continuous oil pipe includes core pipe
And the pillar outside the core pipe is set in, and multi-strand cable unit is folded between the core pipe and the pillar, it is per share described
Cable unit includes more cables；It is characterized in that, the attachment device includes：
Inner tube, the outer tube and seal assembly being set in outside said inner tube, said inner tube can be arranged for the core pipe, said inner tube
Outer wall outwardly convex close to upper end is provided with multiple first perforation, Duo Gesuo formed with peripheral flange in the peripheral flange
It is corresponding with cable unit described in multiply to state the first perforation；The upper end of the outer tube and the peripheral flange limit one and open wide
Annular groove, when the core pipe of the non-stick direct type composite continuous oil pipe is set in outside said inner tube, the pillar is pressed together on institute
To state between inner tube and the outer tube, the upper end of cable unit described in multiply is extended into the annular groove, and multiple described
Lead wire cable is equipped with one perforation respectively, the lower end of multiple lead wire cables extends into the annular groove and difference
It is electrically connected with cable unit described in multiply, the both ends of the seal assembly are close with the peripheral flange and the outer tube respectively
The side wall of upper end is connected, thus the annular groove and the seal assembly formed the upper end of cable unit described in multiply and
The abutment of the lower end of multiple lead wire cables is contained in sealed chamber therein.
2. it is used for the attachment device of non-stick direct type composite continuous oil pipe as claimed in claim 1, it is characterised in that the outer tube
Upper end bend inwards to form bending part, on the bending part circumferentially along have it is accordingly recessed with cable unit described in multiply
Mouthful, the recess is when the core pipe of the non-stick direct type composite continuous oil pipe is set in outside said inner tube by the cable unit pressure
Close on the outer wall of said inner tube.
3. it is used for the attachment device of non-stick direct type composite continuous oil pipe as claimed in claim 1, it is characterised in that the company of further including
Connector, outer wall of the connector close to lower end stretch out to form connecting portion, and the connecting portion is connected with the peripheral flange
Connect, be provided with the connecting portion with it is multiple it is described first perforation accordingly second perforation, it is described second perforation with accordingly
First perforation is connected；
The lead wire cable is plugged in first perforation and the second perforation of corresponding connection, and the upper end of the lead wire cable
Extend to outside second perforation, lower end is extended into the sealed chamber.
4. it is used for the attachment device of non-stick direct type composite continuous oil pipe as claimed in claim 3, it is characterised in that described second
The cutting ferrule being sealed against is provided with perforation, the lead wire cable is fixed and is threaded through in the cutting ferrule.
5. it is used for the attachment device of non-stick direct type composite continuous oil pipe as claimed in claim 1, it is characterised in that the sealing
Component includes：
Packing element, the solid peripheral flange in upper end top of the packing element, lower end is set in outside the outer tube；
The multiple wedge shapes watt being set in outside the packing element, the wall thickness of multiple wedge shapes watt gradually increase along direction from bottom to up
Greatly；
The fastening shield being set in outside multiple wedge shapes watt, its wall thickness gradually increase along direction from top to bottom；The fastening
The lower end of shield is set in outside the outer tube, and upper end is threadedly coupled with the peripheral flange, so that the fastening shield can be opposite
The peripheral flange moves axially.
6. it is used for the attachment device of non-stick direct type composite continuous oil pipe as claimed in claim 1, it is characterised in that said inner tube
Retainer ring is arranged with outside, formed with gap between the inner wall of the retainer ring and the outer wall of said inner tube；
The non-stick direct type composite continuous oil pipe, which further includes, to be folded between the core pipe and the pillar and positioned at described in multiply
The upper end of the core pipe and the pillar is stretched out in tensile layer on the outside of cable unit, the upper end of the tensile layer；When the core
When pipe sleeve is located at outside said inner tube, the upper end of the tensile layer through the gap and be pressed together on the pillar and the outer tube it
Between, cable unit described in multiply enters in the sealed chamber through the gap.
7. it is used for the attachment device of non-stick direct type composite continuous oil pipe as claimed in claim 1, it is characterised in that said inner tube
Outer wall outwardly convex formed with multiple first steps being axially distributed along it, the first step has convex towards the circumferential direction
First mount surface of edge.
8. it is used for the attachment device of non-stick direct type composite continuous oil pipe as claimed in claim 1, it is characterised in that the outer tube
Inner wall it is inwardly protruding formed with multiple second steps being axially distributed along it, the second step has convex towards the circumferential direction
Second mount surface of edge.
A kind of 9. tubing nipple, it is characterised in that including：
Non-stick direct type composite continuous oil pipe, it includes：Core pipe and the pillar being set in outside the core pipe, the core pipe and described
Multi-strand cable unit is folded between pillar, the per share cable unit includes more cables；
Attachment device as described in claim 1 to 8 any one, the core pipe are set in outside said inner tube, the pillar pressure
Close between said inner tube and the outer tube, the upper end of cable unit described in multiply is extended into the annular groove, multiple
Lead wire cable is equipped with respectively in first perforation, and the lower end of multiple lead wire cables is extended into the annular groove
And be electrically connected respectively with cable unit described in multiply, the both ends of the seal assembly respectively with the peripheral flange and described outer
Side wall of the pipe close to upper end is connected, so that the annular groove is formed cable unit described in multiply with the seal assembly
The abutment of upper end and the lower end of multiple lead wire cables is contained in sealed chamber therein.
10. tubing nipple as claimed in claim 9, it is characterised in that be arranged with retainer ring, the retainer ring outside said inner tube
Inner wall and said inner tube outer wall between formed with gap；
The non-stick direct type composite continuous oil pipe, which further includes, to be folded between the core pipe and the pillar and positioned at described in multiply
The upper end of the core pipe and the pillar is stretched out in tensile layer on the outside of cable unit, the upper end of the tensile layer；When the core
When pipe sleeve is located at outside said inner tube, the upper end of the tensile layer through the gap and be pressed together on the pillar and the outer tube it
Between, cable unit described in multiply passes through the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711372951.1A CN108005586B (en) | 2017-12-19 | 2017-12-19 | Attachment device and tubing nipple for non-stick direct type composite continuous oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711372951.1A CN108005586B (en) | 2017-12-19 | 2017-12-19 | Attachment device and tubing nipple for non-stick direct type composite continuous oil pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108005586A true CN108005586A (en) | 2018-05-08 |
| CN108005586B CN108005586B (en) | 2019-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711372951.1A Active CN108005586B (en) | 2017-12-19 | 2017-12-19 | Attachment device and tubing nipple for non-stick direct type composite continuous oil pipe |
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| CN (1) | CN108005586B (en) |
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| EP0198672A2 (en) * | 1985-04-17 | 1986-10-22 | Halliburton Company | Well tool suspension cable head weak point |
| CN2237713Y (en) * | 1995-06-20 | 1996-10-16 | 吉林省油田管理局钻采工艺研究院 | Multifunctional composite continuous oil pipe for oil well |
| US7407005B2 (en) * | 2005-06-10 | 2008-08-05 | Schlumberger Technology Corporation | Electrically controlled release device |
| CN202280430U (en) * | 2011-10-26 | 2012-06-20 | 中国石油化工股份有限公司 | Novel quick-connecting device for coiled tubing |
| CN103775750A (en) * | 2012-10-23 | 2014-05-07 | 中国石油天然气集团公司 | Coiled tubing cable-penetrating sealing device |
| CN105811324A (en) * | 2016-04-01 | 2016-07-27 | 中国石油化工股份有限公司 | Cable conveying assembly for penetrating cable into coiled tubing and cable penetrating system |
| CN106150394A (en) * | 2016-08-22 | 2016-11-23 | 中国石油天然气股份有限公司 | A kind of downhole oil pipe inner cable docking facilities |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0198672A2 (en) * | 1985-04-17 | 1986-10-22 | Halliburton Company | Well tool suspension cable head weak point |
| CN2237713Y (en) * | 1995-06-20 | 1996-10-16 | 吉林省油田管理局钻采工艺研究院 | Multifunctional composite continuous oil pipe for oil well |
| US7407005B2 (en) * | 2005-06-10 | 2008-08-05 | Schlumberger Technology Corporation | Electrically controlled release device |
| CN202280430U (en) * | 2011-10-26 | 2012-06-20 | 中国石油化工股份有限公司 | Novel quick-connecting device for coiled tubing |
| CN103775750A (en) * | 2012-10-23 | 2014-05-07 | 中国石油天然气集团公司 | Coiled tubing cable-penetrating sealing device |
| CN105811324A (en) * | 2016-04-01 | 2016-07-27 | 中国石油化工股份有限公司 | Cable conveying assembly for penetrating cable into coiled tubing and cable penetrating system |
| CN106150394A (en) * | 2016-08-22 | 2016-11-23 | 中国石油天然气股份有限公司 | A kind of downhole oil pipe inner cable docking facilities |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108005586B (en) | 2019-05-07 |
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