CN207260988U - A kind of high temperature high voltage resistant ultra-deep slim hole completion packer - Google Patents
A kind of high temperature high voltage resistant ultra-deep slim hole completion packer Download PDFInfo
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- CN207260988U CN207260988U CN201721038429.5U CN201721038429U CN207260988U CN 207260988 U CN207260988 U CN 207260988U CN 201721038429 U CN201721038429 U CN 201721038429U CN 207260988 U CN207260988 U CN 207260988U
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- packer
- high temperature
- voltage resistant
- slips
- high voltage
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Abstract
The utility model discloses a kind of high temperature high voltage resistant ultra-deep slim hole completion packer, the packing element (14) in the middle part of packer uses hydrogenation nitrile rubber and fluorubber material；The length of packing element (14) is 106mm 110mm；The slips (29) of packer bottom is inserted.A kind of high temperature high voltage resistant ultra-deep slim hole completion packer of the utility model, suitable in high temperature, high pressure, 5 1/2 " the setting well for carrying out completion practice in casing; meet high temperature, the subsurface environment of high pressure and high intensity; and " casing sets demand to small wall thickness 5 1/2, highest can be set safely in the casing of 140V grade of steels, and the completion practice for high temperature and pressure ultra-deep block provides technical guarantee.
Description
Technical field
It the utility model is related to petroleum and natural gas well completion, oil recovery field, more particularly to a kind of high temperature high voltage resistant ultra-deep is small
Wellbore well completion packer.
Background technology
The annular space between casing and oil pipe is blocked using casing packer in oil and gas exploration and development process,
To prevent from especially threatening well control safety by altering on annular space to well head.Packer passes through with oil pipe G.I.H design position
The modes such as hydraulic coupling, mechanical force make packing element produce oxygen blast cyanidation, so as to close the annular space of oil pipe and casing.
The oil reservoir of many oil field blocks buries depth (vertical depth at this stage：7576.19m), temperature high (159 DEG C, geothermal gradient
2.1 DEG C/100m), pressure high (88.87MPa pressure coefficients 1.173) and drilling process it is complicated, bore and meet Ordovician system mulberry tower wood group fire
Diagenesis intrusive body well section develops high pressure water layer, pressure coefficient 1.47.In order to improve collapse resistance, production string uses 5-1/2 "
Casing sealing igneous rock intrusion well section, but the casing strength high (140V materials), internal diameter are small (124.26mm), to well completing test
Bring certain difficulty.
In addition, conventional use of 5-1/2 " casing packers cannot meet the exploitation requirement of the block, it is primarily present following
Problem：
1) packer pressure-bearing is inadequate, and the pressure-bearing of conventional cannula packer is 50MPa, and in some block oil well production process
Highest pressure-bearing 50.7MPa；
2) conventional packer heatproof is low, deep big (7100m) under the packer of some blocks, bears 165 DEG C of stream temperature, and conventional
170 DEG C of packer heatproof, the close conventional packer rated temperature of actual bearing temperature；
3) some block igneous rock intrusion well sections development high pressure water layer, in order to improve the collapse resistance of casing, uses
5-1/2 " casings be intensity high (140V materials), the casing of small wall thickness (7.72mm), be only applicable to wall thickness with conventional
The packer used in 9.17mm casings does not match.
Therefore, existing 5-1/2 " casing packers completion tool can not meet requirement, and completion practice is difficult, need excellent
Change kit performance.
Utility model content
The purpose of this utility model is to provide a kind of high temperature high voltage resistant ultra-deep slim hole completion packer.
To achieve the above object, the specific skill of a kind of high temperature high voltage resistant ultra-deep slim hole completion packer of the utility model
Art scheme is：
A kind of high temperature high voltage resistant ultra-deep slim hole completion packer, packing element in the middle part of packer using hydrogenation nitrile rubber and
Fluorubber material；The length of packing element is 106mm-110mm；The slips of packer bottom is inserted.
Further, slips is provided at both ends with cone, and cone is by being pressed into slips to increase the two-way anchor of slips
It is fixed.
Further, sealing system is provided with packer, sealing system includes upper end balanced valve, middle seat from top to bottom
Piston-cylinder, packing element and lower end bi-directional slip are sealed, it is poor to bear bidirectional high-pressure.
Further, the draining set with shear pin is provided with the top of the upper piston of packer.
Further, packer is provided with ratchet catch means.
Further, the bottom of the lower piston of packer is provided with lock ring baffle ring, and the shear pin of slip sleeve is kept off close to lock ring
The bottom of circle is set, and lower piston downlink cuts lock ring baffle ring and drives upper cone downlink opening slips to complete to set.
A kind of the advantages of high temperature high voltage resistant ultra-deep slim hole completion packer of the utility model, is：
1) packer of the utility model is suitable in high temperature (204 DEG C), high pressure (70MPa), 5-1/2 " casing (internal diameters：
5.085-5.139 ") in the setting well for carrying out completion practice (test, pressure break), meet high temperature, the subsurface environment and height of high pressure
Intensity, and small wall thickness 5-1/2 " casings set demand, highest can safely set in the casing of 140V grade of steels, surpass for high temperature and pressure
The completion practice of deep block provides technical guarantee；
2) ensure that the grappling of slips and packing element fully compress by piston；
3) anchoring ability of packer is improved, setting force will be locked and kept to ratchet catch means, set persistently effectively；
4) setting force and deblocking power can be adjusted as needed, above carry or dextrorotation unseals, it is easy to operate.
Brief description of the drawings
Fig. 1 is the structure diagram of the packer of the utility model；
Fig. 2 is the top partial schematic diagram of the utility model packer；
Fig. 3 is the lower part partial schematic diagram of the utility model packer.
Embodiment
In order to be better understood by the purpose of this utility model, structure and function, below in conjunction with the accompanying drawings, to the utility model
A kind of high temperature high voltage resistant ultra-deep slim hole completion packer does further detailed description.
As shown in Figure 1 to Figure 3, it is shown as a kind of high temperature high voltage resistant ultra-deep slim hole completion packer of the utility model,
Packing element 14 in the middle part of packer is using hydrogenation nitrile rubber and fluorubber material, to improve temperature tolerance；The length of packing element 14 is
106mm-110mm (preferably 108mm), to improve pressure-bearing property, the slips 29 of packer bottom is the inserted structure of hard alloy, to carry
The high anchoring ability to casing, thus meets high temperature, the subsurface environment of high pressure and high intensity, the seat of small wall thickness 5-1/2 " casings
Envelope demand, technical guarantee is provided for completion practice.
Specifically, the packing element 14 of packer is using hydrogenation nitrile rubber and fluorubber material, and hydrogenation is to improve point
Sub- heat endurance, improve cross-linker density increase heat decomposition temperature, so that the heatproof of packer is lifted to 204 DEG C by 177 DEG C, can
With meet high temperature (204 DEG C), high pressure (70MPa) 5-1/2 " in casing it is setting.
Further, critical component is the packing element 14 with elastic performance in packer, when packing element 14 bears to be compressed axially load
During lotus, produce axial crushing deformation and be radially expanded, so as to contact stress be produced between packing element 14 and casing, to reach excluder ring
Empty, isolation payzone purpose.Also, in order to increase the contact between packing element and casing, the length of packing element is 108mm, both sides
Support packing element is optimal packing element length when being 51mm, and the pressure-bearing difference of packer can be lifted to 70MPa by 50MPa.
Further, " casing uses 140V Hi-grade steel materials to the slips 29 of packer bottom, in order to solve to insulate for 51/2
The problem of device grappling is difficult, replaces the mill teeth slips of conventional packer by the inserted slips of hard alloy, and slips hardness can be by
50 are promoted to 65, improve the anchoring ability of packer.Slips 29 is provided at both ends with cone 28, and cone is by being pressed into card
To increase the bidirectionally anchoring of slips in watt, suppress that received pressure when setting is bigger, and cone 28 squeezes into slips more than 29, two-way
Slips 29 gets over Zhang Yue great, and bidirectionally anchoring is more effective.
Further, sealing system is provided with packer, includes upper end balanced valve 10 from top to bottom, centre sets piston
Cylinder sleeve 23, packing element 14 and lower end bi-directional slip 29, it is poor to bear bidirectional high-pressure.Lower end slips 29 can be in the slips with shear pin
Fully shunk in set 31, the guiding exceeded to avoid outside diameter under slip sleeve 31 covers outside diameter, causes the casing that collides with during going into the well.
Further, the top of the upper piston 19 of packer is provided with the draining set 15 with shear pin, and hydraulic pressure is made
With in upper piston 19,19 uplink of upper piston is cut on draining set 15 after shear pin, and drives the centre of packing element bottom to set
Piston-cylinder 23 and the draining set lead ring 13 at the top of packing element 13 continue uplink compression packing element 14, seal packing element.
In addition, packer is provided with ratchet catch means 25, for keeping locking and setting force, so that slips 29 and packing element
14 set persistently effectively.
Further, the bottom of the lower piston 21 of packer is provided with lock ring baffle ring 27, and the shear pin of slip sleeve 31 is close
The bottom of lock ring baffle ring 27 is set, and when packer, which is suppressed, to be set, 21 downlink of lower piston cuts lock ring baffle ring 27 and slip sleeve 31
Upper each shear pin, drives 28 downlink of upper cone, completes to set so as to open slips 29.
A kind of course of work of high temperature high voltage resistant ultra-deep slim hole completion packer of the utility model is retouched below
State：
During G.I.H, button-type can be connected according to the upper and lower side of packer and select suitable variable buckle, under connecting after tubing string
Well, attentional selection suitably suppresses plug or is located connector during fastening means string.Under take pressure instrument and generally have two kinds：It is located and connects
Head with rubber plug (or hollow blocking), or directly under take tamponade.By the lower end of packer and suppress plug connection, upper end and tubing string
Enter well after connection.
Suppress when setting, hydraulic pressure is acted in upper piston 19 and lower piston 21.21 downlink of lower piston first is cut
Each shear pin on disconnected lock ring baffle ring 27 and slip sleeve 31, lower piston 21 drives 28 downlink of upper cone, so that it is complete to open slips 29
Into setting；Meanwhile 19 uplink of upper piston is cut on draining set 15 after shear pin, upper piston 19 drives steel cylinder barrel 23 and draining set to lead
Ring 13 continues uplink compression packing element 14.The thrust of the higher upper piston 19 of pressure is bigger, and packing element 14 the more is pressed the more real, and sealing effect is more aobvious
Write；The cone 28 at 29 both ends of slips squeezes into slips more than 29, and two-way slips 29 gets over Zhang Yue great, and bidirectionally anchoring is more effective.Together
When the packer exclusive ratchet catch means 25 will lock and keep setting force so that slips 29 and packing element 14 are set persistently
Effectively.
During deblocking, the shear pin 4 cut on release set 5 is directly above carried；Or dextrorotation is cut and is cut between release set 5 and top connection
Pin 4 is cut, then the circle of dextrorotation 8 makes top connection 2 drive inner central tube 7 to thread off with release nut 3；Then continue above to carry again, successively unseal
Packing element 14 and slips 29.
A kind of high temperature high voltage resistant ultra-deep slim hole completion packer of the utility model, suitable in high temperature (204 DEG C), height
Press (70MPa), 5-1/2 " casing (internal diameters：5.085-5.139 ") in the setting well for carrying out completion practice (test, pressure break), meet
High temperature, the subsurface environment of high pressure and high intensity, and small wall thickness 5-1/2 " casings set demand, highest can set safely in
The casing of 140V grade of steels, the completion practice for high temperature and pressure ultra-deep block provide technical guarantee；Slips is ensured by piston
Grappling and packing element fully compress；The anchoring ability of packer is improved, ratchet catch means will lock and keep setting force, and set
Persistently effectively；Setting force and deblocking power can be adjusted as needed, above carry or dextrorotation unseals, it is easy to operate.
The utility model is further described by specific embodiment above, it should be understood that, have here
The description of body, should not be construed as the restriction to the spirit and scope of the utility model, and one of ordinary skilled in the art is readding
The various modifications made after reader specification to above-described embodiment, belong to the scope that the utility model is protected.
Claims (6)
1. a kind of high temperature high voltage resistant ultra-deep slim hole completion packer, it is characterised in that the packing element (14) in the middle part of packer uses
Hydrogenate nitrile rubber and fluorubber material；The length of packing element (14) is 106mm-110mm；The slips (29) of packer bottom is edge
Tooth.
2. high temperature high voltage resistant ultra-deep slim hole completion packer according to claim 1, it is characterised in that slips (29)
It is provided at both ends with cone (28), cone is by being pressed into slips to increase the bidirectionally anchoring of slips.
3. high temperature high voltage resistant ultra-deep slim hole completion packer according to claim 1, it is characterised in that set on packer
Sealing system is equipped with, sealing system includes upper end balanced valve (10) from top to bottom, centre sets piston-cylinder (23), packing element
(14) and lower end bi-directional slip (29) it is, poor to bear bidirectional high-pressure.
4. high temperature high voltage resistant ultra-deep slim hole completion packer according to claim 1, it is characterised in that packer it is upper
The draining set (15) with shear pin is provided with the top of portion's piston (19).
5. high temperature high voltage resistant ultra-deep slim hole completion packer according to claim 1, it is characterised in that packer is set
There are ratchet catch means (25).
6. high temperature high voltage resistant ultra-deep slim hole completion packer according to claim 1, it is characterised in that under packer
The bottom of portion's piston (21) is provided with lock ring baffle ring (27), and the shear pin of slip sleeve (31) is set close to the bottom of lock ring baffle ring (27)
Put, lower piston (21) downlink cuts lock ring baffle ring (27) and drives upper cone (28) downlink opening slips (29) to complete to set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038429.5U CN207260988U (en) | 2017-08-18 | 2017-08-18 | A kind of high temperature high voltage resistant ultra-deep slim hole completion packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038429.5U CN207260988U (en) | 2017-08-18 | 2017-08-18 | A kind of high temperature high voltage resistant ultra-deep slim hole completion packer |
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| Publication Number | Publication Date |
|---|---|
| CN207260988U true CN207260988U (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721038429.5U Active CN207260988U (en) | 2017-08-18 | 2017-08-18 | A kind of high temperature high voltage resistant ultra-deep slim hole completion packer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042755A (en) * | 2018-10-11 | 2020-04-21 | 中国石油化工股份有限公司 | Hydraulic control compression type composite rubber anchor |
-
2017
- 2017-08-18 CN CN201721038429.5U patent/CN207260988U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042755A (en) * | 2018-10-11 | 2020-04-21 | 中国石油化工股份有限公司 | Hydraulic control compression type composite rubber anchor |
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