CN207177805U - A kind of device for slowing down the abrasion of annular preventer glue core - Google Patents
A kind of device for slowing down the abrasion of annular preventer glue core Download PDFInfo
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- CN207177805U CN207177805U CN201721060432.7U CN201721060432U CN207177805U CN 207177805 U CN207177805 U CN 207177805U CN 201721060432 U CN201721060432 U CN 201721060432U CN 207177805 U CN207177805 U CN 207177805U
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Abstract
The utility model discloses a kind of device for slowing down the abrasion of annular preventer glue core, belong to oilfield machinery field.The device includes：Self-styled seat body, self-sealing rubber core, gland.Self-styled seat body is provided with the cavity for accommodating oil pipe, and lower end is detachably connected with stationary slip；Self-sealing rubber core is arranged in self-styled seat body, for passing through with making oil pipe dynamic sealing；Gland is provided with the cavity for accommodating oil pipe, is detachably connected with the upper end of self-styled seat body, for compressing self-sealing rubber core.The simple to operate of workover treatment with pressure is carried out using the device, annular preventer glue core can be made full use of, slows down the abrasion of annular preventer glue core, and reduce operating cost.
Description
Technical field
Oilfield machinery field is the utility model is related to, more particularly to a kind of device for slowing down the abrasion of annular preventer glue core.
Background technology
, it is necessary to play lower tubular column (such as drilling rod, oil pipe) in oil well with pressure workover treatment.During lower tubular column is played,
In order to prevent oil between oil pipe and sleeve pipe, gas and water from spraying upwards, it is necessary to install preventer in well head.In annular preventer,
The annular preventer glue core for being arranged on annular preventer inner chamber plays a part of dynamic sealing oil pipe, therefore in the process for playing lower tubular column
In, annular preventer glue core is easily worn.The dynamic sealing effect of annular preventer glue core after abrasion is poor, easily cause oil,
Gas and water leaks, and triggers security incident when serious.Therefore, it is very necessary to slow down the abrasion of annular preventer glue core.Based on above-mentioned
Understand, there is provided it is a kind of slow down annular preventer glue core abrasion method or device be very necessary.
Prior art provides a kind of method for slowing down the abrasion of annular preventer glue core, and this method is specially：Repaiied with pressure
In well operations, borehole pressure is monitored in real time.According to borehole pressure size, the pressure in preventer is adjusted in real time, to change annular
The tightness of toroidal cavity between rubber core of lubricator dynamic sealing oil pipe and well head, and then preventer is made full use of, to slow down
The abrasion of annular preventer glue core, reduce operating cost.For example, when borehole pressure is smaller, annular blowout preventer glue is controlled
The tight ness rating of toroidal cavity between core dynamic sealing oil pipe and well head is small.Conversely, control annular rubber core of lubricator dynamic sealing oil pipe
The tight ness rating of toroidal cavity between well head is big.In a particular application, stationary slip connects with the upper end of annular preventer, leads to
Control stationary slip clamping oil pipe is crossed, is easy to the connection or dismounting of oil pipe.
Designer has found that prior art at least has problems with：
The method that prior art provides is cumbersome, it has not been convenient to operates, it is not easy to control the seal degree of rubber core of lubricator, slow down
The effect of rubber core of lubricator abrasion is poor.
Utility model content
In order to solve problem of the prior art, the utility model embodiment provides a kind of convenient operation, it is anti-to slow down annular
The good device of effect of spray apparatus glue core abrasion.The technical scheme is as follows：
The utility model embodiment provides a kind of device for slowing down the abrasion of annular preventer glue core, and described device includes：
Self-styled seat body, self-sealing rubber core, gland；
The self-styled seat body is provided with the cavity for accommodating oil pipe, and lower end is detachably connected with stationary slip；
The self-sealing rubber core is arranged in the self-styled seat body, for passing through with making the oil pipe dynamic sealing；
The gland is provided with the cavity for accommodating the oil pipe, detachably connects with the upper end of the self-styled seat body
Connect, for compressing the self-sealing rubber core.
Specifically, preferably, the self-sealing rubber core includes：The linkage section and seal section connected from top to bottom；
The external diameter of the linkage section is more than the external diameter of the seal section；
The lower end of the linkage section and the upper end of the self-styled seat body are detachably connected, and the upper end of the linkage section with
The gland offsets；
The seal section is arranged in the self-styled seat body, and for passing through with making the oil pipe dynamic sealing.
Specifically, preferably, the inner chamber of the self-styled seat body includes：The handstand round platform chamber and circle connected from top to bottom
Post chamber；
The seal section is in handstand round platform barrel structure, and external wall of upper portion and the inwall of the handstand round platform chamber offset.
Specifically, preferably, the inner chamber of the seal section is in handstand frustum cone structure, bottom is close for moving the oil pipe
Feud passes through.
Specifically, preferably, the lower end of the linkage section and the upper end clamping of the self-styled seat body.
Specifically, preferably, the lower surface of the linkage section is provided with an annular coaxial with the self-sealing rubber core
Locking member；
The upper surface of the self-styled seat body is provided with an annular buckling groove coaxial with the self-styled seat body；
The annular locking member and the annular buckling groove clamping.
Specifically, preferably, the groove width of the annular buckling groove is from top to bottom gradually reduced；
The annular locking member is in the structure being adapted with the annular buckling groove.
Specifically, preferably, the lower end of the gland is provided with stopper slot, roof and the side wall difference of the linkage section
Offseted with the roof and side wall of the stopper slot.
Specifically, preferably, the self-styled seat body includes：The upper linkage section that connects from top to bottom, interlude, lower company
Connect section；
External diameter of the external diameter of the upper linkage section and the lower linkage section than the interlude is big；
Connected between the upper linkage section and the gland using multiple bolt assemblies；
Connected between the lower linkage section and the stationary slip using multiple bolt assemblies.
The beneficial effect brought of technical scheme that the utility model embodiment provides is：
What the utility model embodiment provided slows down the device of annular preventer glue core abrasion, by making self-styled seat body
Lower end is detachably connected with stationary slip, and setting makes the self-sealing rubber core that oil pipe dynamic sealing passes through in self-styled seat body, with
It is used alone in the workover treatment with pressure less than 7MPa, and then to reduce the frequency of use of annular preventer, plays and slow down ring
The effect of shape rubber core of lubricator abrasion, reduces operating cost.In the workover treatment with pressure higher than 7MPa, the device and ring are controlled
Shape preventer works simultaneously, or annular preventer is worked independently, to make full use of annular preventer glue core.It can be seen that use
The device that the utility model embodiment provides carries out the simple to operate of workover treatment with pressure, can make full use of annular preventer glue
Core, it is good to slow down the effect of annular preventer glue core abrasion, and reduces operating cost.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the device for slowing down the abrasion of annular preventer glue core that the utility model embodiment provides and stationary slip, prevented
The location diagram of spray apparatus, oil pipe；
Fig. 2-1 is the first structural representation for the self-sealing rubber core that the utility model embodiment provides；
Fig. 2-2 is second of structural representation of the self-sealing rubber core that the utility model embodiment provides；
Fig. 3 is the semi-cutaway for the self-styled seat body that the utility model embodiment provides；
Fig. 4 is the structural representation for the gland that the utility model embodiment provides.
Wherein, reference represents respectively：
1 self-styled body,
101 annular buckling grooves,
The upper linkage sections of 1a,
1b interludes,
Linkage section under 1c,
2 self-sealing rubber cores,
201 linkage sections,
2011 annular locking members,
202 seal sections,
3 glands,
301 stopper slots,
4 oil pipes,
5 stationary slips,
6 annular preventers.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Type embodiment is described in further detail.
The utility model embodiment provides a kind of device for slowing down the abrasion of annular preventer glue core, as shown in Figure 1, should
Device includes：Self-styled seat body 1, self-sealing rubber core 2, gland 3.Self-styled seat body 1 is provided with the cavity for accommodating oil pipe 4, and
Lower end is detachably connected with stationary slip 5；Self-sealing rubber core 2 is arranged in self-styled seat body 1, for wearing with making the dynamic sealing of oil pipe 4
Cross；Gland 3 is provided with the cavity for accommodating oil pipe 4, is detachably connected with the upper end of self-styled seat body 1, self-styled for compressing
Glue core 2.
It should be noted that the bearing capacity of self-sealing rubber core 2 is poorer than the bearing capacity of annular preventer glue core, price is low
It is honest and clean, it can be applied in the workover treatment with pressure less than 7MPa.
In the utility model embodiment, stationary slip 5 is generally located on annular preventer 6, itself and annular preventer 6
Stationary slip and annular preventer respectively commonly used in this field.Specifically, by controlling the piston in stationary slip 5 to transport
It is dynamic, to drive the block teeth clamping being connected with pistons end or unclamp oil pipe, and then it has been easy to lower tubular column.Pass through hydraulic control ring
Annular preventer glue core in shape preventer 6, dynamic sealing oil pipe when can make its work, away from oil pipe when not working.
Research shows, in about 2/3rds oil well with pressure workover treatment, borehole pressure is less than 7MPa, and now oil well is prevented
It is relatively low to spray job requirements, if if now making the work of annular preventer 6, its application value is less than the mill of expensive glue core
Damage.Thus, it is necessary to realize：When borehole pressure is less than 7MPa, annular preventer 6 is set not work and (slow down the abrasion of glue core), together
When also ensure Operating Pressure requirement, also, when borehole pressure is higher than 7MPa, annular preventer 6 is worked.
In order to solve the above-mentioned technical problem, the utility model embodiment provide one kind slow down annular preventer glue core abrasion
Device.The operation principle of the device provided below with regard to the utility model embodiment, which is given, to be described：
In use, making self-styled seat body 1 be sleeved on oil pipe 4, and pass through with making the dynamic sealing of oil pipe 4 and be arranged on self-styled seat
Self-sealing rubber core 2 in body 1, then the lower end of self-styled seat body 1 is detachably connected with stationary slip 5, is sleeved on oil pipe 4
The upper end of gland 3 and self-styled seat body 1 be detachably connected, to compress self-sealing rubber core 2.
Pressure in real-time monitoring objective oil well, when pressure is less than 7MPa, pass through the not work of hydraulic control annular preventer 6
Make, only allow the device to work.The device passes through oil pipe 4 in the course of the work, due to the dynamic sealing of self-sealing rubber core 2, that is, uses
The device can be avoided the oil in well, gas and water etc. and sprayed with the toroidal cavity between dynamic sealing oil pipe 4 and well head.Playing down tube
During post, the grade of oil pipe 4 tubing string phase mutual friction only between self-sealing rubber core 2, annular preventer glue core is not involved in work, reduces
Use the frequency of rubber core of lubricator.When the pressure in target oil well is higher than 7MPa, control annular preventer 6 and the device same
When work, or, the device is dismantled, only allows annular preventer 6 to work.
The utility model embodiment provide device, annular preventer 6 or both simultaneously work when, pass through control
Oil pipe 4 is unclamped in the clamping of stationary slip 5, in order to remove multiple-tubing string 4.
What the utility model embodiment provided slows down the device of annular preventer glue core abrasion, by making self-styled seat body 1
Lower end be detachably connected with stationary slip 5, and set in the self-styled seat body 1 pass through the dynamic sealing of oil pipe 4 from sealing
Core 2, to be used alone in the workover treatment with pressure less than 7MPa, and then the frequency of use of annular preventer 6 is reduced, play and subtract
The effect of slow annular preventer glue core abrasion, reduces operating cost.In the workover treatment with pressure higher than 7MPa, the device is controlled
Worked simultaneously with annular preventer 6, or annular preventer 6 is worked independently, to make full use of annular preventer glue core.Can
See, the device provided using the utility model embodiment carries out the simple to operate of workover treatment with pressure, can make full use of annular
Rubber core of lubricator, it is good to slow down the effect of annular preventer glue core abrasion, and reduces operating cost.
Self-sealing rubber core 2 could be arranged to various structures, based on being easily provided in self-styled seat body 1, and can make oil pipe 4
On the premise of passing through to dynamic sealing, as shown in accompanying drawing 2-1 and accompanying drawing 2-2, self-sealing rubber core 2 includes：The connection connected from top to bottom
Section 201 and seal section 202, the external diameter of linkage section 201 are more than the external diameter of seal section 202；The lower end of linkage section 201 and self-styled seat sheet
The upper end of body 1 is detachably connected, and the upper end of linkage section 201 offsets with gland 3；Seal section 202 is arranged on self-styled seat body 1
It is interior, and for passing through with making the dynamic sealing of oil pipe 4.
The inner chamber of self-styled seat body 1 and the seal section 202 of self-sealing rubber core 2 could be arranged to the knot of a variety of mutual cooperations
Structure, such as the inner chamber of self-styled seat body 1 and the seal section 202 of self-sealing rubber core 2 could be arranged to cylindrical structure, or other
Structure etc..Wherein, when seal section 202 is in column structure, reference can be made to accompanying drawing 2-1.Preferably, as shown in Figure 3, self-styled seat sheet
The inner chamber of body 1 includes：The handstand round platform chamber and cylindrical cavity connected from top to bottom；Seal section 202 is in handstand round platform barrel structure, top
The inwall of outer wall and handstand round platform chamber offsets.
It is arranged such, when borehole pressure increases, borehole pressure acts on the lower end and lateral wall bottom of seal section 202,
And the lower end of linkage section 201 and the upper end of self-styled seat body 1 are detachably connected, and the upper end of linkage section 201 offsets with gland 3,
So the further dynamic sealing oil pipe 4 under pressure of seal section 202, is avoided when borehole pressure increases, oil in well,
Gas and water etc. is revealed by the gap between oil pipe 4 and self-sealing rubber core 2.
Wherein, the size of the external diameter of the internal diameter of handstand round platform chamber and handstand frustum cone cylinder is to be gradually reduced from top to bottom.
For the ease of making oil pipe 4 pass through self-sealing rubber core 2, and in the presence of borehole pressure, seal section 202 can be radially
Expansion is mobile, and with further dynamic sealing oil pipe 4, as shown in accompanying drawing 2-2, the inner chamber of seal section 202 is in handstand round platform knot
Structure, bottom are used to pass through with making the dynamic sealing of oil pipe 4.
After the abrasion of self-sealing rubber core 2, for the ease of changing self-sealing rubber core 2, the lower end of linkage section 201 and self-styled seat body 1
Upper end clamping.
The mode of the lower end of linkage section 201 and the upper end clamping of self-styled seat body 1 has a variety of, and two kinds given below are specifically shown
Example：
As the first example, the lower surface of linkage section 201 is provided with an annular locking member coaxial with self-sealing rubber core 2
2011；The upper surface of self-styled seat body 1 is provided with an annular buckling groove 101 coaxial with self-styled seat body 1；Annular locking member
2011 with the annular clamping of buckling groove 101.
Annular locking member 2011 and annular buckling groove 101 are set, with self-sealing rubber core 2 and during self-styled 1 clamping of seat body, just
Alignd exactly with buckling groove in locking member, while play sealing function.
The cross section of annular locking member 2011 and annular buckling groove 101 could be arranged to various structures, such as square, triangle
Shape etc..Preferably, as shown in Figure 3, the groove width of annular buckling groove 101 is from top to bottom gradually reduced；Annular locking member 2011
In the structure being adapted with annular buckling groove 101.It is understood that the cross section of annular buckling groove 101 is in the trapezoidal knot that stands upside down
Structure, the trapezoidal structure in cross section of annular locking member 2011.
The structure of annular locking member 2011 and annular buckling groove 101 is arranged such, is easy to the annular insertion ring of locking member 2011
Shape buckling groove 101, or extracted by annular buckling groove 101, and then it is easy to the dismounting of self-sealing rubber core 2 and self-styled seat body 1.
As second of example, the lower surface of linkage section 201 is circumferentially arranged multiple locking members；Self-styled seat body 1
Upper surface is provided with multiple buckling grooves；Locking member and buckling groove clamping.
Multiple locking members and multiple buckling grooves are distinguished into clamping, to realize the card between self-sealing rubber core 2 and self-styled seat body 1
Connect.
Specifically, the structure of locking member and buckling groove could be arranged to a variety of, for example, both cross section sides of being
Shape structure, arcuate structure, triangular structure, trapezium structure etc..On the premise of based on easy realization, both dismount, locking member
Cross section is in isosceles trapezoidal structure, and the cross section of buckling groove is in handstand isosceles trapezoidal structure.
In the presence of borehole pressure, in order to avoid self-sealing rubber core 2 is moved radially outwards, influences it and seal oil pipe 4
Performance, as shown in Figure 4, the lower end of gland 3 are provided with stopper slot 301, the roof and side wall of linkage section 201 respectively with stopper slot
301 roof and side wall offsets, with spacing to self-sealing rubber core 2.
The outline structure of self-styled seat body 1 could be arranged to it is a variety of, for the ease of realizing itself and gland 3, stationary slip 5
Between be detachably connected, provide example in detail below：
As shown in Figure 3, self-styled seat body 1 includes：The upper linkage section 1a that connects from top to bottom, interlude 1b, lower connection
Section 1c；Upper linkage section 1a and lower linkage section 1c external diameter are bigger than interlude 1b external diameter；Make between upper linkage section 1a and gland 3
Connected with multiple bolt assemblies；Connected between lower linkage section 1c and stationary slip 5 using multiple bolt assemblies.
Upper linkage section 1a and lower linkage section 1c external diameter are set greater than to interlude 1b external diameter, are easy in upper linkage section
Through hole is set on 1a and lower linkage section 1c, and then is easy to make linkage section 1a and gland 3 removable respectively using multiple bolt assemblies
Connection, lower linkage section 1c and stationary slip 5 is unloaded to be detachably connected.Also, above-mentioned be detachably connected is realized using bolt assembly
Mode is easily set, and is easy to dismount.
Specifically, multiple through holes are respectively arranged with upper linkage section 1a and lower linkage section 1c, are provided with gland 3 multiple logical
Hole, multiple through holes are provided with stationary slip 5.By by multiple bolts respectively penetrate upper linkage section 1a, on gland 3 it is relative more
Individual through hole, and by being sleeved on each bolt, and offset two of the lower end with upper linkage section 1a, the upper end of gland 3 respectively
Nut check is fixed.By the way that multiple bolts are respectively penetrated into lower linkage section 1c, multiple through holes relative on stationary slip 5, and lead to
Cross and be sleeved on each bolt, and two nut checks that the upper end with lower linkage section 1c, the upper end of stationary slip 5 offset respectively
It is fixed.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (9)
1. a kind of device for slowing down the abrasion of annular preventer glue core, it is characterised in that described device includes：Self-styled seat body (1),
Self-sealing rubber core (2), gland (3)；
The self-styled seat body (1) is provided with the cavity for accommodating oil pipe (4), and lower end detachably connects with stationary slip (5)
Connect；
The self-sealing rubber core (2) is arranged in the self-styled seat body (1), for passing through with making the oil pipe (4) dynamic sealing；
The gland (3) is provided with the cavity for accommodating the oil pipe (4), removable with the upper end of the self-styled seat body (1)
Connection is unloaded, for compressing the self-sealing rubber core (2).
2. device according to claim 1, it is characterised in that the self-sealing rubber core (2) includes：The company connected from top to bottom
Connect section (201) and seal section (202)；
The external diameter of the linkage section (201) is more than the external diameter of the seal section (202)；
The lower end of the linkage section (201) and the upper end of the self-styled seat body (1) are detachably connected, and the linkage section
(201) upper end offsets with the gland (3)；
The seal section (202) is arranged in the self-styled seat body (1), and for passing through with making the oil pipe (4) dynamic sealing.
3. device according to claim 2, it is characterised in that the inner chamber of the self-styled seat body (1) includes：From top to bottom
The handstand round platform chamber and cylindrical cavity of connection；
The seal section (202) is in handstand round platform barrel structure, and external wall of upper portion and the inwall of the handstand round platform chamber offset.
4. device according to claim 3, it is characterised in that the inner chamber of the seal section (202) is in handstand frustum cone structure,
Bottom is used to pass through with making the oil pipe (4) dynamic sealing.
5. device according to claim 2, it is characterised in that the lower end of the linkage section (201) and the self-styled seat sheet
The upper end clamping of body (1).
6. device according to claim 5, it is characterised in that the lower surface of the linkage section (201) be provided with one with
The coaxial annular locking member (2011) of the self-sealing rubber core (2)；
The upper surface of the self-styled seat body (1) is provided with an annular buckling groove coaxial with the self-styled seat body (1)
(101)；
The annular locking member (2011) and annular buckling groove (101) clamping.
7. device according to claim 6, it is characterised in that the groove width of the annular buckling groove (101) from top to bottom by
It is decrescence small；
The annular locking member (2011) is in the structure being adapted with the annular buckling groove (101).
8. device according to claim 2, it is characterised in that the lower end of the gland (3) is provided with stopper slot (301),
Roof and side wall of the roof and side wall of the linkage section (201) respectively with the stopper slot (301) offset.
9. device according to claim 1, it is characterised in that the self-styled seat body (1) includes：Connect from top to bottom
Upper linkage section (1a), interlude (1b), lower linkage section (1c)；
External diameter of the external diameter of the upper linkage section (1a) and the lower linkage section (1c) than the interlude (1b) is big；
It is connected between the upper linkage section (1a) and the gland (3) using multiple bolt assemblies；
It is connected between the lower linkage section (1c) and the stationary slip (5) using multiple bolt assemblies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721060432.7U CN207177805U (en) | 2017-08-23 | 2017-08-23 | A kind of device for slowing down the abrasion of annular preventer glue core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721060432.7U CN207177805U (en) | 2017-08-23 | 2017-08-23 | A kind of device for slowing down the abrasion of annular preventer glue core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207177805U true CN207177805U (en) | 2018-04-03 |
Family
ID=61738738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721060432.7U Active CN207177805U (en) | 2017-08-23 | 2017-08-23 | A kind of device for slowing down the abrasion of annular preventer glue core |
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| CN (1) | CN207177805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911095A (en) * | 2020-08-18 | 2020-11-10 | 中国石油化工股份有限公司 | Pressurized workover device and pressurized workover method for low-pressure oil-water well |
-
2017
- 2017-08-23 CN CN201721060432.7U patent/CN207177805U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911095A (en) * | 2020-08-18 | 2020-11-10 | 中国石油化工股份有限公司 | Pressurized workover device and pressurized workover method for low-pressure oil-water well |
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