CN206581918U - One kind seals by force anti-shoulder formula compression packer - Google Patents

One kind seals by force anti-shoulder formula compression packer Download PDF

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Publication number
CN206581918U
CN206581918U CN201720230303.1U CN201720230303U CN206581918U CN 206581918 U CN206581918 U CN 206581918U CN 201720230303 U CN201720230303 U CN 201720230303U CN 206581918 U CN206581918 U CN 206581918U
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CN
China
Prior art keywords
packing
rotation
seals
force
compression packer
Prior art date
Application number
CN201720230303.1U
Other languages
Chinese (zh)
Inventor
胡刚
王国荣
陈坤
徐杨
张泠昕
伍伟
唐通
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西南石油大学
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Priority to CN201720230303.1U priority Critical patent/CN206581918U/en
Application granted granted Critical
Publication of CN206581918U publication Critical patent/CN206581918U/en

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Abstract

The utility model patent discloses one kind and seals anti-shoulder formula compression packer by force, is related to oil-gas field development downhole tool technical field.Including central tube and it is connected to the top connection and lower contact at its two ends, packing element is provided with the outside of central tube, rotation outburst prevention device is provided with packing element, also includes hydraulic package, hydraulic package is used to apply pressure to packing element and it is contacted after deforming evagination with tubing and casing;Rotating outburst prevention device includes canned paragraph, rotation section and connection wind spring, and canned paragraph is fixedly connected on packing element, and rotation section is flexibly connected by connecting wind spring with canned paragraph;Rotation section is fitted on packing element end face, during packing element compressive deformation evagination and reinstatement, and rotation section is rotated and is fitted in all the time on packing element end face.The packer can effectively solve the technical problem of voltage endurance capability and shoulder, and its sealing property is substantially improved, it is ensured that reliability of the instrument in underground work.

Description

One kind seals by force anti-shoulder formula compression packer
Technical field
The utility model patent is related to oil-gas field development downhole tool technical field, more particularly to a kind of compression packing Device.
Background technology
In oil-gas field development underground work, and in the operation such as drilling well, well cementation, test, completion, existing packer is easy Appearance causes hair fastener because distorting, or can not unseal, and sets unstable, easily destroyed etc. situation of packing element, in particular with brill Progress of the excavating technology constantly in terms of high temperature, high pressure and complicated deep formation, the working condition of oil gas well mining becomes increasingly complex, This for underground work key tool --- packer proposes higher requirement.
There is certain interval between packer steel body and sleeve pipe, when axial compressive force is excessive, then can produce packing element " shoulder " phenomenon, And then cause packing element to be destroyed.It is exactly to lay certain in the end of packing element that the anti-lug structure carried out currently for this phenomenon, which is improved, Blocker ring, support member, stopping means and guard member etc. are planted, to obtain good sealing.Actually come into operation at the scene at present " protrusion-dispelling " structure species it is less, mainly have copper bowl curing type and two kinds of steel mesh curing type.But as pressure increases, packing element Shoulder protector is overturn, and is damaged seriously, is caused packing element to be destroyed.Therefore this shoulder protector device can be played in the case of low-pressure Certain protective effect, but with the increase of pressure, common outburst prevention device can not meet underground work needs.Institute So that the research of high voltage bearing outburst prevention device is imperative.
Utility model content
Utility model purpose of the present utility model is:Anti- shoulder is sealed by force there is provided one kind for above-mentioned problem Formula compression packer, the packer can effectively solve the technical problem of voltage endurance capability and shoulder, and packer sealing is substantially improved Performance, it is ensured that reliability of the instrument in underground work.
The technical solution adopted in the utility model is as follows:
One kind seals by force anti-shoulder formula compression packer, including central tube and the top connection for being connected to its two ends And lower contact, the central tube outside, which is provided with packing element, the packing element, is provided with rotation outburst prevention device, also includes hydraulic pressure group Part, the hydraulic package is used to apply pressure to packing element and it is contacted after deforming evagination with tubing and casing.
In further technical scheme, the rotation outburst prevention device includes canned paragraph, rotation section and connection wind spring, described Canned paragraph is fixedly connected on packing element, and the rotation section is flexibly connected by connecting wind spring with canned paragraph.
In further technical scheme, the connection wind spring has self-return function, and rotation section is fitted in packing element end face On, during packing element compressive deformation evagination and reinstatement, rotation section is rotated and is fitted in all the time on packing element end face.
In further technical scheme, the packing element is to be provided with air bag at least two, and at least one of which packing element.
In further technical scheme, the packing element is three, respectively upper packing element, middle packing element and lower rubber cylinder, it is described in Air bag is provided with packing element.
In further technical scheme, one end of the rotation section of the rotation outburst prevention device can connect after rotation with tubing and casing Touch.
In further technical scheme, the hydraulic package and lower rubber cylinder are closely coupled, for applying pressure to lower rubber cylinder, Including hydraulic cylinder, hydraulic drive plunger and sealing ring, the hydraulic drive plunger coordinates with sealing ring is installed on hydraulic cylinder It is interior.
In further technical scheme, check valve one and check valve two, the check valve one are offered on the central tube It is circulated to for liquid from central tube in the runner set on its outer wall, the check valve two is returned for liquid from the runner In central tube.
In further technical scheme, the pressure that the check valve one is opened is slightly less than the hydraulic cylinder after the packing element is set The pressure of cylinder.
In summary, by adopting the above-described technical solution, the beneficial effects of the utility model are:
Solve the problems, such as that packer voltage endurance capability is low and shoulder.Coordinated by the way that packing element will be set with rotation outburst prevention device, Play anti-shoulder effect;By installing ballonet in packing element in setting wherein, energy can be hoarded when setting and be conducive to rapidly Deblocking, and air bag is yielding that part axial force can be converted to radial load, strengthens sealing property;Opened up at center tube wall into Hydraulic fluid port and oil-out, and center tube wall is externally provided with some runners, when oil pressure is increased in central tube, pushes unidirectional at oil inlet open Valve, to center tube wall outer flow passage oiling, fluid radially applies pressure to packing element, further enhancing sealing.This packer is great Its sealing property is improved, so as to ensure that reliability of the instrument in underground work.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation that the utility model is in the state that sets;
Fig. 3 is the structural representation of the utility model rotation outburst prevention device and packing element cooperation position;
Fig. 4 is that the utility model packing element is in the schematic diagram coordinated when setting state with rotation outburst prevention device;
Fig. 5 is the structural representation of the utility model hydraulic package;
Fig. 6 is the structural representation of the utility model center pipe outer wall upper runner;
Marked in figure:1st, central tube;2nd, top connection;3rd, lower contact;
4th, outburst prevention device is rotated;5th, hydraulic package;6th, tubing and casing;7th, air bag;
8th, upper packing element;9 be middle packing element;10 be lower rubber cylinder;
11 be check valve one;12 be check valve two;13 be runner;
41 be canned paragraph;42 be rotation section;43 be connection wind spring;
51 be hydraulic cylinder;52 be hydraulic drive plunger;53 be sealing ring.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing 1 to Fig. 6 And embodiment, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only used To explain the utility model, it is not used to limit the utility model.
As shown in figure 1, on the one hand problem to be solved in the utility model is the voltage endurance capability of packer, another is to pass through Rotation outburst prevention device solves the problems, such as shoulder, including central tube and the top connection and lower contact that are connected to its two ends, described It is provided with the outside of central tube on packing element, the packing element and is provided with rotation outburst prevention device, also includes hydraulic package, the hydraulic package For applying pressure to packing element and it is contacted after deforming evagination with tubing and casing.By the cooperation of packing element and rotation outburst prevention device, During packing element compression deformation, and contact and set with tubing and casing after packing element deformation, rotation outburst prevention device is right all the time Packing element is protected.In further scheme, for the whole variable condition for adapting to packing element compressive deformation and setting, we will Rotation outburst prevention device is designed as canned paragraph, rotation section and connection wind spring, and as shown in Figure 2, Figure 3 and Figure 4, the canned paragraph is fixed It is connected on packing element, the rotation section is flexibly connected by connecting wind spring with canned paragraph, wherein connection wind spring has self-return Function, during packing element compressive deformation evagination and reinstatement, rotation section is rotated and is fitted in all the time on packing element end face, After packing element evagination is contacted with tubing and casing, the top of rotation section is contacted with tubing and casing, so that packing element is protected, meanwhile, During the entire process of pressure release, rotation section is fitted in packing element end face straight all the time under the self-return function of connection wind spring Recover to packing element to original state.
In further technical scheme, the packing element is to be provided with air bag at least two, and at least one of which packing element. In the present embodiment, we use three packing elements, respectively upper packing element, middle packing element and lower rubber cylinder, are provided with the middle packing element Air bag.Certainly, for which packing element air bag is arranged in, and the particular location being arranged in packing element, can be as needed It is adjusted, air bag is arranged in middle packing element by we in the present embodiment, when being pressed by hydraulic package to lower rubber cylinder, due to There is the setting of air bag in middle packing element, deformation evagination is contacted with tubing and casing so middle packing element can take the lead in, and forms initial sealing state;When Pressure is further raised, and is contacted after upper packing element and lower rubber cylinder compression evagination with tubing and casing, state is set completely so as to reach, rotation The rotation section for turning outburst prevention device is contacted with tubing and casing, effectively prevents each packing element shoulder.
When be completely in set state after, check valve one be pressurized can open, as shown in fig. 6, fluid by oil inlet in Heart pipe spreads to the runner on its outer wall, so as to outwards strengthen radial load to upper packing element, middle packing element and lower rubber cylinder, to reach into one The effect of step enhancing sealing, the problem of sufficiently solving the utility model voltage endurance capability.
Hydraulic package and lower rubber cylinder employed in above-mentioned technical proposal is closely coupled, as shown in figure 5, for lower rubber cylinder Apply pressure, including hydraulic cylinder, hydraulic drive plunger and sealing ring, the hydraulic drive plunger coordinates with sealing ring to be installed on In hydraulic cylinder.Hydraulic drive plunger is moved to act on lower rubber cylinder and it is pressed upwards, and sealing ring is enclosed on inside hydraulic cylinder Play sealing function.
At the oil inlet of the centrally disposed pipe of check valve one used in above-mentioned technical proposal, set at central tube oil-out There is check valve two, when needing deblocking after the end of job, hydraulic package pressure release, hydraulic drive plunger is descending, is pressed inside central tube Power is reduced, and check valve one is closed, and check valve two, which is opened, releases fluid, so that packing element is returned to original state.
In further technical scheme, the pressure that the check valve one is opened is slightly less than the hydraulic cylinder after the packing element is set The pressure of cylinder.With fully ensure that in set state completely when, check valve one can be opened in time, and make packing element sets state It is further strengthened.
If packer needs to set again after terminating, repeat the above steps.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model Protection domain within.

Claims (9)

1. one kind seals by force anti-shoulder formula compression packer, it is characterised in that:Including central tube (1) and it is connected to it It is arranged with outside the top connection (2) and lower contact (3) at two ends, the central tube (1) on packing element, the packing element and is provided with rotation protrusion-dispelling Device (4), also includes hydraulic package (5), and the hydraulic package (5) is used to apply pressure to packing element and it is deformed after evagination Contacted with tubing and casing (6).
2. one kind according to claim 1 seals by force anti-shoulder formula compression packer, it is characterised in that:The rotation is anti- Prominent device (4) includes canned paragraph (41), rotation section (42) and connection wind spring (43), and the canned paragraph (41) is fixedly connected on glue On cylinder, rotation section (42) section is flexibly connected by connecting wind spring (43) with canned paragraph (41).
3. one kind according to claim 2 seals by force anti-shoulder formula compression packer, it is characterised in that:The connection volume Spring (43) has self-return function, and rotation section (42) is fitted on packing element end face, in packing element compressive deformation evagination and recovery During original state, rotation section (42) is rotated and is fitted in all the time on packing element end face.
4. one kind according to Claims 2 or 3 seals by force anti-shoulder formula compression packer, it is characterised in that:The glue Cylinder be at least two, and at least one of which packing element in be provided with air bag (7).
5. one kind according to claim 4 seals by force anti-shoulder formula compression packer, it is characterised in that:The packing element is Three, respectively upper packing element (8), middle packing element (9) and lower rubber cylinder (10), the middle packing element (9) is interior to be provided with air bag (7).
6. one kind according to Claims 2 or 3 seals by force anti-shoulder formula compression packer, it is characterised in that:The rotation Turning one end of the rotation section (42) of outburst prevention device (4) can contact after rotation with tubing and casing (6).
7. one kind according to claim 5 seals by force anti-shoulder formula compression packer, it is characterised in that:The hydraulic pressure group Part (5) and lower rubber cylinder (10) are closely coupled, for applying pressure, including hydraulic cylinder (51), hydraulic drive to lower rubber cylinder (10) Plunger (52) and sealing ring (53), the hydraulic drive plunger (52) coordinates with sealing ring (53) is installed on hydraulic cylinder (51) It is interior.
8. one kind according to claim 1 seals by force anti-shoulder formula compression packer, it is characterised in that:The central tube (1) check valve one (11) and check valve two (12) are offered on, the check valve one (11) is used for liquid and circulated from central tube (1) In the runner (13) set on to its outer wall, the check valve two (12) is used for liquid and returns to central tube from the runner (13) (1) in.
9. one kind according to claim 8 seals by force anti-shoulder formula compression packer, it is characterised in that:The check valve The pressure that one (11) are opened is slightly less than the pressure of the hydraulic cylinder (51) after the packing element is set.
CN201720230303.1U 2017-03-10 2017-03-10 One kind seals by force anti-shoulder formula compression packer CN206581918U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720230303.1U CN206581918U (en) 2017-03-10 2017-03-10 One kind seals by force anti-shoulder formula compression packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720230303.1U CN206581918U (en) 2017-03-10 2017-03-10 One kind seals by force anti-shoulder formula compression packer

Publications (1)

Publication Number Publication Date
CN206581918U true CN206581918U (en) 2017-10-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108999589A (en) * 2018-07-26 2018-12-14 中国石油大学(华东) A kind of workover treatment downhole blow-out preventer
CN109538156A (en) * 2018-12-20 2019-03-29 中国石油集团川庆钻探工程有限公司 A kind of Oil testing packing element design method
CN109973043A (en) * 2019-05-14 2019-07-05 淮安市井神钻采机具有限公司 A kind of multilayer company note water injection packer with step-by-step deblocking

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108999589A (en) * 2018-07-26 2018-12-14 中国石油大学(华东) A kind of workover treatment downhole blow-out preventer
CN109538156A (en) * 2018-12-20 2019-03-29 中国石油集团川庆钻探工程有限公司 A kind of Oil testing packing element design method
CN109538156B (en) * 2018-12-20 2021-02-05 中国石油集团川庆钻探工程有限公司 Design method of packer rubber cylinder for oil testing
CN109973043A (en) * 2019-05-14 2019-07-05 淮安市井神钻采机具有限公司 A kind of multilayer company note water injection packer with step-by-step deblocking

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