CN104389547B - The extruding packing element of a kind of built-in metal component and processing technique thereof - Google Patents
The extruding packing element of a kind of built-in metal component and processing technique thereof Download PDFInfo
- Publication number
- CN104389547B CN104389547B CN201410450414.4A CN201410450414A CN104389547B CN 104389547 B CN104389547 B CN 104389547B CN 201410450414 A CN201410450414 A CN 201410450414A CN 104389547 B CN104389547 B CN 104389547B
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- China
- Prior art keywords
- packing element
- ring block
- ring
- baffle ring
- block
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Classifications
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
Abstract
The invention discloses the extruding packing element of a kind of novel built-in metal component, it includes hardware (1), packing element (2), upper baffle ring (3) and lower baffle ring (4), cylindrical shape and the die cavity (6) overlapped with packing element (2) centrage it is provided with in packing element (2), the top of upper ring block (7) and the bottom of lower ring block (8) be provided with multiple be easy to liquid rubber circulation fluting (12), fluting (12) is evenly distributed on ring block (7) and lower ring block (8), on the cylinder of upper ring block (7) and lower ring block (8) and the interannular of the fluting (12) that staggers is provided with V-arrangement fin (13), hardware (1) is inserted in die cavity (6), die cavity pours into, in (6), the rubber being mixed and heated to arrive curing temperature；It further disclose processing technique.The invention has the beneficial effects as follows: resilience is good, easy to use, service life is longer, can repeatedly use, insulate effective.
Description
Technical field
The present invention relates to be drilled well or underground work process carries out the technology of annular space packing at oil gas field, particularly a kind of in
Put extruding packing element and the processing technique thereof of hardware.
Background technology
Oil gas field is drilled well or underground work process generally requires and carries out annular space packing, so can block the fluid of annular space
Process at packing, thus reach the effect of choked flow.Carrying out annular space packing in drilling process is to meet hydraulic oil to reach to bore
Being insulated at the nearly drill bit in down-hole by hydraulic oil air-flow when air-flow, thus reach the effect of Underwell anti-injection, downhole blow-out preventer is well
The main device of lower spraying-preventing system.Carrying out annular space packing during Oil/gas Well production operation is in order to by gas channel or pressure
Split liquid passage or waterflood path carries out separation spacing, thus reach oil production by layer gas or zonal pressure or seperated layer water injection
Effect, isolating tool conventional in effect is packer.Either downhole blow-out preventer is again or packer is required for carrying out annular space
Packing, and realize annular space packing core component be packing element.
At present, according to the difference of the setting mode of packing element, following four classes can be divided into be sealed against mode: (1) self-sealing: depend on
Interference and operting differential pressure by packing element external diameter with casing inner diameter realize sealing.(2) compression: compress packing element by axial force so that
The change of packing element external diameter realizes greatly sealing.(3) expanding: using radial force to act on packer accessory inner chamber, packer accessory enlarged outside diameter realizes
Seal.(4) combination type: realized sealing by self-sealing, compression, expanding combination in any.
As a rule, packing element uses setting relatively conventional of compression, but the annular clearance that compression type glue barrel can insulate is relatively
Little.Expand packing element can excluder ring empty gap relatively big, but it is the most long to expand packing element.The expansion of expansion glue tube is past
Packing element just can be made to expand in squeezing into high-pressure fluid entrance packing element toward needs by well head, compression then has multiple form,
Can use squeeze into highly pressurised liquid compress after hydraulic conversion becomes piston axially-movable packing element two ends baffle ring extruding packing element swollen
Swollen, or use transfer tubing string extruding packing element expand or use electro-mechanical system extrusion expansion.In some operating mode
Under, it would be desirable to do not change be drilled well or operation technique flow process on the premise of (i.e. can not use and suppress expansion fashion) need again
Insulating bigger annular clearance, the most traditional gum extruding packing element is the most applicable, and forces us to find new glue
Cylinder design, this patent uses and is implanted into hardware at tradition packing element, makes rubber have skeleton, and packing element can have simultaneously
Rubber and the characteristic of metal, soft middle band is firm so that it is packing ability can promote, and especially changes more greatly the work of space system in packing
Under condition, have bigger performance boost compared to the packing element of tradition gum material.
Summary of the invention
It is an object of the invention to overcome the shortcoming of prior art, it is provided that a kind of can bear bigger pressure reduction, resilience
Good, easy to use, service life is longer, can repeatedly use, insulate effective built-in metal component extruding packing element and
Its processing technique.
The purpose of the present invention is achieved through the following technical solutions: the extruding packing element of a kind of built-in metal component, it includes
Hardware, packing element, upper baffle ring and lower baffle ring, it is inverted T-shaped that described upper baffle ring and the bottom of lower baffle ring are provided with cross section
Cannelure, is provided with cylindrical shape and the die cavity overlapped with packing element centrage in described packing element, the upper/lower terminal of packing element all in
T shape, described hardware is made up of upper ring block, lower ring block and metal ribs, and upper ring block is parallel to lower ring block and sets
Putting, be provided with multiple metal ribs being distributed ringwise between upper ring block and lower ring block, the wall thickness of each metal ribs is respectively less than
Upper ring block and lower ring block, each metal ribs is provided with chamfering, upper annular with the contact position of upper ring block and lower ring block
It is provided with fillet, the top of upper ring block and lower ring block on block and lower ring block and between the most adjacent two metal ribs
Bottom be provided with multiple be easy to liquid rubber circulation fluting, fluting be evenly distributed on ring block and lower ring block, on
On the cylinder of ring block and lower ring block and stagger fluting interannular be provided with V-arrangement fin, described hardware is inserted in mould
In chamber, the upper/lower terminal of described packing element is stuck in the cannelure of upper baffle ring and lower baffle ring, and upper ring block and lower annular
V-arrangement fin on block is separately positioned in the cannelure of upper baffle ring and lower baffle ring, has poured into that be mixed and heated to will in die cavity
To the rubber of curing temperature, rubber is consolidated with hardware.
The quantity of described metal ribs is 3 ~ 400, and metal ribs is evenly distributed on along the circumferencial direction of upper ring block
Between ring block and lower ring block.
The radius of described fillet is more than 0.5mm.
Described metal ribs wall thickness is 0.5 ~ 3mm.
The degree of depth of described fluting is 0.5 ~ 9mm, and the quantity of fluting is 3 ~ 100, and the position of fluting place bus with
Stagger in the position of metal ribs.
Described chamfering is 1 ~ 30 °.
Described V-arrangement fin is alternatively U-shaped fin.
A kind of processing technique of the extruding packing element of built-in metal component, it comprises the following steps:
S1, first hardware is inserted in die cavity；
S2, packing element and hardware and upper baffle ring and the assembling of lower baffle ring, to the upper/lower terminal radial compression of packing element, pressure
Send into upper baffle ring and the cannelure of lower baffle ring after contracting, when V-arrangement fin is in completely into the hole of baffle ring, cancel constraint, now,
The left and right resilience of V-arrangement fin, V-arrangement fin is respectively held against the port of upper baffle ring and lower baffle ring, it is achieved thereby that packing element and hardware
With upper baffle ring and the assembling of lower baffle ring；
S3, hardware and the consolidation of rubber, pour into the rubber being mixed and heated to reach curing temperature in die cavity
Glue, rubber to die cavity heat, rubber keeps curing temperature persistently to vulcanize in die cavity, and in sulfidation gradually with metal structure
Part is consolidated, it is achieved thereby that the processing of extruding packing element.
The invention have the advantages that on the upper ring block of (1) present invention and lower ring block and be positioned at the most adjacent two gold
Belong to and be provided with fillet between muscle, thus avoid hardware and crackle occurs, extend the service life of hardware.(2)
The shape of the rib of the present invention can guarantee that rubber departs from all without with hardware when bearing big pressure reduction up and down.(3) this
Bright packing element is when being extruded by upper baffle ring and lower baffle ring, and hardware drives rubber to expand together, and this makes packing element and upper baffle ring
More tight with what lower baffle ring connected, simultaneously when bearing upper and lower pressure reduction and extrude, contacting of packing element and upper baffle ring and lower baffle ring
Relative displacement will not occur between face, thus reach to insulate effect, it is ensured that packing safe and reliable.(4) at upper and lower pressure differential collapses
Rear and when upper baffle ring and lower baffle ring playback, V-arrangement fin is pullled hardware and packing element is restored, and this makes packing element safer
Durable, have the advantages that resilience is good, and extend the service life of extruding packing element.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiments of the invention one；
Fig. 2 is the I portion partial enlarged view of Fig. 1；
Fig. 3 is the structural representation of upper baffle ring in Fig. 1；
Fig. 4 is the structural representation of hardware in Fig. 1；
Fig. 5 is the A-A sectional view of Fig. 4；
Fig. 6 is the C-C sectional view of Fig. 4；
Fig. 7, Fig. 8 and Fig. 9 are the radial cross-sectional shape of metal ribs；
Figure 10, Figure 11 and Figure 12 are the circumferential cross-section shape of metal ribs；
Figure 13 is the structural representation of embodiments of the invention two；
Figure 14 is the II portion partial enlarged view of Figure 13；
Figure 15 is the structural representation of embodiments of the invention three；
Figure 16 is the III portion partial enlarged view of Figure 15；
In figure, 1-hardware, 2-packing element, 3-upper baffle ring, 4-lower baffle ring, 5-cannelure, 6-die cavity, the upper ring block of 7-,
Ring block under 8-, 9-metal ribs, 10-chamfering, 11-fillet, 12-slots, 13-V shape fin, 14-U shape fin, 15-pin-and-hole, 16-
Pin.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings, and protection scope of the present invention is not limited to the following stated:
Embodiment one: as depicted in figs. 1 and 2, the extruding packing element of a kind of built-in metal component, it includes hardware 1, glue
Cylinder 2, upper baffle ring 3 and lower baffle ring 4, described upper baffle ring 3 and the bottom of lower baffle ring 4 are provided with the cannelure that cross section is inverted T-shaped
5, it is provided with cylindrical shape and the die cavity 6 overlapped with packing element 2 centrage in described packing element 2, the upper/lower terminal of packing element 2 is all in T
Shape, described hardware 1 is made up of upper ring block 7, lower ring block 8 and metal ribs 9, and upper ring block 7 is parallel to lower annular
Block 8 is arranged.As Figure 4-Figure 6, multiple metal ribs 9 being distributed ringwise, muscle it are provided with between upper ring block 7 and lower ring block 8
The shape of bar can guarantee that rubber departs from all without with hardware 1 when bearing big pressure reduction up and down, metal ribs 9 wall thickness is 0.5 ~
3mm, the wall thickness of each metal ribs 9 is respectively less than upper ring block 7 and lower ring block 8, each metal ribs 9 and upper ring block 7 and lower ring
The contact position of shape block 8 is provided with chamfering 10, and chamfering 10 is 1 ~ 30 °, on upper ring block 7 and lower ring block 8 and be positioned at the most adjacent
Being provided with fillet 11 between two metal ribs 9, the radius of fillet 11 is more than 0.5mm.As Figure 4-Figure 6, the top of upper ring block 7
The bottom of portion and lower ring block 8 be provided with multiple be easy to liquid rubber circulation fluting 12, fluting 12 the degree of depth be 0.5 ~ 9mm,
The quantity of fluting 12 is 3 ~ 100, and staggers with the position of metal ribs 9 in the position of 12 place buses of slotting, and fluting 12 uniformly divides
Cloth on upper ring block 7 and lower ring block 8, on the cylinder of upper ring block 7 and lower ring block 8 and stagger fluting 12 interannular be all provided with
Being equipped with V-arrangement fin 13, V-arrangement fin 13 stands upside down and arranges.As depicted in figs. 1 and 2, hardware 1 is inserted in die cavity 6, described glue
The upper/lower terminal of cylinder 2 is stuck in the cannelure 5 of upper baffle ring 3 and lower baffle ring 4, and the V on upper ring block 7 and lower ring block 8
Shape fin 13 is separately positioned in the cannelure 5 of upper baffle ring 3 and lower baffle ring 4, has poured into and be mixed and heated to arrive in die cavity 6
The rubber of curing temperature, rubber is consolidated with hardware 1, when packing element 2 is extruded by upper baffle ring 3 and lower baffle ring 4, metal
Component 1 drives rubber to expand together, and it is more tight that this makes that packing element 2 is connected with upper baffle ring 3 and lower baffle ring 4, is bearing simultaneously
Up and down pressure reduction and when extruding, relative displacement will not occur between the contact surface of packing element 2 and upper baffle ring 3 and lower baffle ring 4, thus reach envelope
Every effect, it is ensured that packing safe and reliable.
The quantity of described metal ribs 9 is 3 ~ 400, and metal ribs 9 is evenly distributed on along the circumferencial direction of upper ring block 7
Between upper ring block 7 and lower ring block 8.
A kind of processing technique of the extruding packing element of built-in metal component, it comprises the following steps:
S1, first hardware is inserted in die cavity 6；
S2, packing element and hardware and upper baffle ring and the assembling of lower baffle ring, to the upper/lower terminal radial compression of packing element 2, pressure
Send into upper baffle ring 3 and the cannelure 5 of lower baffle ring 4 after contracting, when V-arrangement fin 13 is in completely into the hole of baffle ring, cancel constraint,
Now, V-arrangement fin about 13 resilience, V-arrangement fin 13 is respectively held against upper baffle ring 3 and the port of lower baffle ring 4, it is achieved thereby that packing element
With hardware and upper baffle ring and the assembling of lower baffle ring；
S3, hardware and the consolidation of rubber, pour into the rubber being mixed and heated to reach curing temperature in die cavity 6
Glue, rubber to die cavity heat, rubber keeps curing temperature persistently to vulcanize in die cavity, and in sulfidation gradually with metal structure
Part 1 is consolidated, it is achieved thereby that the processing of extruding packing element.
Embodiment two: as shown in Figure 13 and Figure 14, the present embodiment is with the distinctive points of embodiment one: upper ring block 7 and
On the cylinder of lower ring block 8 and stagger fluting 12 interannular be provided with in inverted U-shaped fin 14, the assembly method of U-shaped fin is:
First at the port grooving of upper baffle ring 3 and lower baffle ring 4, the quantity of groove and cross-sectional sizes and the U-shaped fin 14 1 on hardware 1
Cause, after U-shaped fin 14 is entered cannelure 5 by this groove, rotating metallic component 1 so that U-shaped fin 14 is by upper baffle ring 3 and lower block
Ring 4 port-stuck, it is achieved thereby that the assembling of U-shaped fin, when after pressure differential collapses and when playbacking when upper baffle ring 3 and lower baffle ring 4,
U-shaped fin 14 is pullled hardware 1 and packing element 2 is restored.
Embodiment three: as shown in Figure 15 and Figure 16, the present embodiment is with the distinctive points of embodiment one: upper baffle ring 3 and under
The pin-and-hole 15 connected with cannelure 5 it is provided with, in pin 16 is arranged on pin-and-hole 15 and sequentially pass through packing element 2 on the cylinder of baffle ring 4
With upper ring block 7, after upper and lower pressure differential collapses and when upper baffle ring 3 and lower baffle ring 4 playback, pin 16 is pullled hardware 1 and is made
Obtain packing element 2 to restore, the extruding packing element more safety durable prepared.Carried additionally, the resilience of packing element 2 is upper lower baffle ring by pin 16
The resilience of dynamic hardware 1, drives rubber resilience more safe and reliable than upper and lower baffle ring.
Claims (8)
1. the extruding packing element of a built-in metal component, it is characterised in that: it includes hardware (1), packing element (2), upper baffle ring
(3) and lower baffle ring (4), described upper baffle ring (3) and the bottom of lower baffle ring (4) are provided with the cannelure that cross section is inverted T-shaped
(5), in described packing element (2), be provided with cylindrical shape and the die cavity (6) overlapped with packing element (2) centrage, packing element (2) upper,
The equal t shape in lower two ends, described hardware (1) is made up of upper ring block (7), lower ring block (8) and metal ribs (9), on
Ring block (7) is parallel to lower ring block (8) and arranges, and is provided with and multiple divides ringwise between upper ring block (7) and lower ring block (8)
The metal ribs (9) of cloth, the wall thickness of each metal ribs (9) is respectively less than upper ring block (7) and lower ring block (8), each metal ribs (9)
It is provided with on chamfering (10), upper ring block (7) and lower ring block (8) with the contact position of upper ring block (7) and lower ring block (8)
And be positioned between the most adjacent two metal ribs (9) and be provided with fillet (11), the top of upper ring block (7) and lower ring block (8)
Bottom be provided with multiple be easy to liquid rubber circulation fluting (12), fluting (12) be evenly distributed on ring block (7) and
On lower ring block (8), on the cylinder of upper ring block (7) and lower ring block (8) and the interannular of the fluting (12) that staggers is provided with V-arrangement
Fin (13), described hardware (1) is inserted in die cavity (6), and the upper/lower terminal of described packing element (2) is stuck in gear
In the cannelure (5) of ring (3) and lower baffle ring (4), and the V-arrangement fin (13) on upper ring block (7) and lower ring block (8) sets respectively
Put in the cannelure (5) of upper baffle ring (3) and lower baffle ring (4), die cavity (6) has poured into and has been mixed and heated to arrive sulfuration temperature
The rubber of degree, rubber is consolidated with hardware (1).
The extruding packing element of a kind of built-in metal component the most according to claim 1, it is characterised in that: described metal ribs
(9) quantity is 3 ~ 400, and metal ribs (9) along the circumferencial direction of upper ring block (7) be evenly distributed on upper ring block (7) and
Between lower ring block (8).
The extruding packing element of a kind of built-in metal component the most according to claim 1, it is characterised in that: described fillet (11)
Radius more than 0.5mm.
The extruding packing element of a kind of built-in metal component the most according to claim 1, it is characterised in that: described metal ribs
(9) wall thickness is 0.5 ~ 3mm.
The extruding packing element of a kind of built-in metal component the most according to claim 1, it is characterised in that: described fluting (12)
The degree of depth be 0.5 ~ 9mm, the quantity of fluting (12) is 3 ~ 100, and the position of fluting (12) place bus and metal ribs (9)
Stagger in position.
The extruding packing element of a kind of built-in metal component the most according to claim 1, it is characterised in that: described chamfering (10)
It it is 1 ~ 30 °.
The extruding packing element of a kind of built-in metal component the most according to claim 1, it is characterised in that: described V-arrangement fin
(13) U-shaped fin (14) is replaced with.
The processing technique of the extruding packing element of a kind of built-in metal component the most according to claim 1, it is characterised in that: its bag
Include following steps:
S1, first hardware is inserted in die cavity (6)；
S2, packing element and hardware and upper baffle ring and the assembling of lower baffle ring, to the upper/lower terminal radial compression of packing element (2), compression
Rear feeding upper baffle ring (3) and the cannelure (5) of lower baffle ring (4), when V-arrangement fin (13) is completely into upper baffle ring (3) and lower block
When the cannelure (5) of ring (4) is interior, cancelling constraint, now, V-arrangement fin (13) left and right resilience, V-arrangement fin (13) is respectively held against
Baffle ring (3) and the port of lower baffle ring (4), it is achieved thereby that packing element and hardware and upper baffle ring and the assembling of lower baffle ring；
S3, hardware and the consolidation of rubber, pour into, in die cavity (6), the rubber being mixed and heated to reach curing temperature
Glue, rubber to die cavity heat, rubber keeps curing temperature persistently to vulcanize in die cavity, and in sulfidation gradually with metal structure
Part (1) is consolidated, it is achieved thereby that the processing of extruding packing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450414.4A CN104389547B (en) | 2014-09-05 | 2014-09-05 | The extruding packing element of a kind of built-in metal component and processing technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410450414.4A CN104389547B (en) | 2014-09-05 | 2014-09-05 | The extruding packing element of a kind of built-in metal component and processing technique thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104389547A CN104389547A (en) | 2015-03-04 |
| CN104389547B true CN104389547B (en) | 2016-08-31 |
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| CN201410450414.4A Active CN104389547B (en) | 2014-09-05 | 2014-09-05 | The extruding packing element of a kind of built-in metal component and processing technique thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931025A (en) * | 2017-12-19 | 2019-06-25 | 中石化石油工程技术服务有限公司 | A kind of compression rubber downhole drill preventer |
| CN110500059B (en) * | 2018-05-18 | 2021-06-08 | 中国石油化工股份有限公司 | Expansion packer rubber barrel capable of retracting rapidly |
| CN110630210B (en) * | 2019-10-16 | 2023-12-01 | 中国石油天然气集团有限公司 | Leakage-proof plugging tool for yellow soil layer and using method thereof |
| CN112339199A (en) * | 2020-10-14 | 2021-02-09 | 山东聊城富锋汽车部件有限公司 | Manufacturing process of valve oil seal framework with good sealing performance |
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