CN206158664U - Meticulous omission of examination hourglass packer of looking for is opened to expanding pressure differential - Google Patents
Meticulous omission of examination hourglass packer of looking for is opened to expanding pressure differential Download PDFInfo
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- CN206158664U CN206158664U CN201621180178.XU CN201621180178U CN206158664U CN 206158664 U CN206158664 U CN 206158664U CN 201621180178 U CN201621180178 U CN 201621180178U CN 206158664 U CN206158664 U CN 206158664U
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Abstract
The utility model provides a meticulous omission of examination hourglass packer of looking for is opened to expanding pressure differential, a meticulous omission of examination hourglass packer of looking for is opened to expanding pressure differential, including last packing element and lower packing element, it is connected with lower of the packing element seat of honour and last packing element respectively to go up the packing element both ends, the packing element both ends are connected with down the packing element seat of honour and lower of lower packing element respectively down, go up lower of packing element and pass through this body coupling of check valve down between the packing element seat of honour, be equipped with the check valve on the check valve body, upward be equipped with the slot center tube in the packing element, be equipped with down the slot center tube down in the packing element. The utility model discloses a from top to bottom packing element and check valve looks compound mode, according to upper and lower packing element low pressure poor sit seal, constant space and the poor forward of check valve high pressure open the function, has reached accurate calorie of level, has meticulously judged leak source position, the easy purpose of sealing the deblocking of sitting, has solved the old well of present oil gas well and has looked for omission of examination hourglass packer (tubular column) to look for hourglass extensively, miss easily leak source, unreliable, the difficult scheduling problem of deblocking of performance.
Description
Technical field
This utility model is related to a kind of expanding pressure reduction unlatching and finely looks for the omission of examination to leak packer, is primarily adapted for use in Oil/gas Well old
Well shaft is looked in omission of examination leakage operation.
Background technology
In recent years, the old well well workover business of Changqing oilfields Oil/gas Well gradually increases, be mainly manifested in old well look for Lou, test Lou, it is stifled
The aspects such as leakage, shaft deformation, sand washing, salvaging reducer.Because old well is produced, the cycle is long, and yield is gradually decreased, the old well of great majority
Needs carry out repeating transformation pressure break, seek to judge pit shaft to improve old well yield and recovery ratio, but repeat the early stage of transformation
Whether leakage point is had, and whether pit shaft has deformation, and it is an of paramount importance job to assess pit shaft leakage situation.And current, oil
Gas well great majority look for omission of examination leakage packer tubing string using double envelope single deck tape-recorder packer tubing strings, two compression packers of band, tubing string
Easily occur bit freezing during above carrying, the problems such as slips deblocking is difficult, packing element weares and teares, while looking for leak source to be that comparison is extensive, look for Lou
During easy staggered floor position stuck point, cause the situation for missing leak source more, it is impossible to accurately to judge the whole leak sources of pit shaft, so as to cannot
Good wellbore conditions are provided to transformation is repeated.
For this purpose, finely looking for the omission of examination to leak demand in order to be able to efficiently meet old well, a kind of expanding pressure reduction of innovative design is opened
The omission of examination is finely looked for leak packer.
Utility model content
The purpose of this utility model is that the old well of the existing Oil/gas Well of effectively solving looks for the omission of examination to leak packer（Tubing string）Look for Lou it is extensive,
The problems such as leak source, performance are unreliable, deblocking is difficult is easily missed, omission of examination leakage success rate and its degree that becomes more meticulous are looked in raising, are oil
The old well of gas well repeats transformation and provides pit shaft decision-making foundation.A kind of expanding pressure reduction that this utility model is provided is opened and finely looks for the omission of examination
Leakage packer, this finely looks for the omission of examination to leak packer to make the old well of Oil/gas Well look for omission of examination leakage packer tubing string only to need connection one, so that it may
To realize accurate card layer position, fine judgement leak source position, set the easy target of deblocking.
The technical solution of the utility model is：
A kind of expanding pressure reduction is opened and finely looks for the omission of examination to leak packer, including upper packing element and lower rubber cylinder, the upper packing element two
End is connected to seat under the packing element seat of honour and upper packing element；The lower rubber cylinder two ends are connected to the lower rubber cylinder seat of honour and lower rubber cylinder
Lower seat；Connected by unidirectional valve body between seat and the lower rubber cylinder seat of honour under the upper packing element, the unidirectional valve body is provided with list
To valve；Slotted base pipe is provided with the upper packing element, lower slotted base pipe is provided with the lower rubber cylinder.
The check valve includes valve seat, spring and valve element, and described spring is located between valve seat and valve element.
Seat lower end is connected with lower contact under described lower rubber cylinder；Top connection is connected with the upper packing element seat of honour.
The top connection is tightly connected with the upper packing element seat of honour by sealing ring.
Described upper packing element is identical with the structure of lower rubber cylinder, long 300mm, and spacing 1200mm sets pressure reduction 1.0MPa.
The length direction local of the upper slotted base pipe and lower slotted base pipe is provided with slot, the long 1.0mm of its slot,
Wide 0.5mm.
The upper slotted base pipe and lower slotted base pipe adopt 35CrMo materials processings, hardness HB197 ~ 235.
Described upper packing element is identical with lower rubber cylinder structure, the oil resistant hydrogenated nitrile-butadiene rubber protected using shoulder.
The beneficial effects of the utility model are：
This utility model adopts packing element and lower rubber cylinder and the combined mode of check valve in structure design, according to upper packing element
Constant length and check valve forward direction open function and between lower rubber cylinder, realize accurate card layer position, fine judge leak source position, easily
The purpose of deblocking is set, the old well of existing Oil/gas Well is solved and is looked for the omission of examination to leak packer（Tubing string）Look for Lou it is extensive, easily miss leak source,
The problems such as performance is unreliable, deblocking is difficult, improves oil gas well shaft and looks for omission of examination leakage success rate and its integrity to become more meticulous assessment
Efficiency.Simple structure, easy to use, application effect substantially, looks for omission of examination leakage success rate high, practical.
It is further detailed below with reference to accompanying drawing.
Description of the drawings
Fig. 1 is that a kind of unlatching of expanding pressure reduction finely looks for the omission of examination to leak packer schematic diagram.
Fig. 2 is check valve schematic diagram.
Reference is as follows：1- top connections；2- sealing rings；The upper packing element seats of honour of 3-；The upper slotted base pipes of 4-；The upper packing elements of 5-；
Seat under the upper packing elements of 6-；The unidirectional valve bodies of 7-；8- check valves；The 9- lower rubber cylinders seat of honour；Slotted base pipe under 10-；11- lower rubber cylinders；12-
Seat under lower rubber cylinder；13- lower contacts；14- valve seats；15- springs；16- valve elements.
Specific embodiment
Embodiment 1：
The purpose of this utility model is that the old well of the existing Oil/gas Well of effectively solving looks for the omission of examination to leak packer（Tubing string）Look for Lou it is extensive,
The problems such as leak source, performance are unreliable, deblocking is difficult is easily missed, omission of examination leakage success rate and its degree that becomes more meticulous are looked in raising, are oil
The old well of gas well repeats transformation and provides pit shaft decision-making foundation.A kind of expanding pressure reduction as shown in Figure 1 that this utility model is provided is opened
Open and finely look for omission of examination leakage packer, this finely looks for the omission of examination to leak to make the old well of Oil/gas Well look for omission of examination leakage packer tubing string only to need connection one
Packer, it is possible to realize accurate card layer position, fine judgement leak source position, set the easy target of deblocking.
A kind of expanding pressure reduction is opened and finely looks for the omission of examination to leak packer, including upper packing element 5 and lower rubber cylinder 11, the upper packing element
5 two ends are connected to seat 6 under the packing element seat of honour 3 and upper packing element；The two ends of the lower rubber cylinder 11 are connected to the lower rubber cylinder seat of honour 9
With seat 12 under lower rubber cylinder；Connected by unidirectional valve body 7 between seat 6 and the lower rubber cylinder seat of honour 9 under the upper packing element, the check valve
Body 7 is provided with check valve 8；It is provided with the upper packing element 5 in slotted base pipe 4, the lower rubber cylinder 11 and is provided with lower slot
Heart pipe 10.
This utility model is based on constant length and the positive open function of check valve 8, liquid edge between upper packing element 5 and lower rubber cylinder 11
Tubing string and upper slotted base pipe flow at check valve 8, continues infusion liquid, when upper and lower slotted base pipe fluid pressure exceedes
Casing annulus fluid pressure, and inside and outside differential pressure rises to upper and lower packing element and sets after pressure reduction 1.0MPa, upper and lower packing element could simultaneously
Set, block casing annulus position, form limited closed casing annulus；When upper and lower slotted base pipe and limited closed sleeve ring
When empty hydraulic pressure is more than 4MPa, check valve 8 is positive to be opened, and liquid enters limited closed casing annulus region from check valve 8,
Continue to improve fluid injection discharge capacity and keep stable：If now well head pump pressure is decreased obviously, this illustrates that the upper and lower packing element of the packer is sat
Seal intersegmental sleeve pipe and leakage occur, leak source position is at the well depth；If now well head pump pressure does not decline, rise on the contrary, this says
It is intact that the upper and lower packing element of the bright packer sets intersegmental sleeve pipe, without leakage.Principle accordingly, it can be determined that the upper and lower glue of the packer
Whether completely cylinder sets intersegmental sleeve pipe, looks for the omission of examination to leak operation so as to realize becoming more meticulous.
This utility model adopts packing element 5 and lower rubber cylinder 11 and the combined mode of check valve in structure design, according to upper
Constant length and check valve forward direction open function between packing element 5 and lower rubber cylinder 11, realize accurate card layer position, fine judgement leak source position
The purpose of deblocking is put, easily set, the old well of existing Oil/gas Well is solved and is looked for the omission of examination to leak packer（Tubing string）Look for Lou extensive, easy leakage
Fall the problems such as leak source, performance are unreliable, deblocking is difficult, improve oil gas well shaft and look for omission of examination leakage success rate and its integrity fine
Change assessment efficiency.Simple structure, easy to use, application effect substantially, looks for omission of examination leakage success rate high, practical.
Embodiment 2：
On the basis of based on embodiment 1, as shown in Fig. 2 the check valve 8 includes valve seat 14, spring 15 in the present embodiment
With valve element 16, described spring 15 is positioned between valve seat 14 and valve element 16.
The lower end of seat 12 is connected with lower contact 13 under described lower rubber cylinder；Top connection 1 is connected with the upper packing element seat of honour 3.
The top connection 1 is tightly connected with the upper packing element seat of honour 3 by sealing ring 2.
Described upper packing element 5 is identical with the structure of lower rubber cylinder 11, long 300mm, and spacing 1200mm sets pressure reduction 1.0MPa.
The length direction local of the upper slotted base pipe 4 and lower slotted base pipe 10 is provided with slot, and its slot is long
1.0mm, wide 0.5mm.
The upper slotted base pipe 4 and lower slotted base pipe 10 adopt 35CrMo materials processings, hardness HB197 ~ 235.
Described upper packing element 5 is identical with the structure of lower rubber cylinder 11, the oil resistant hydrogenated nitrile-butadiene rubber protected using shoulder.
The check valve 8 adopts stainless steel material, bore DN06-32, Opening pressure 4.0MPa.
The button-type of the top connection 1 and lower contact 13 is 2-7/8 " EUE.
This packer length 2680mm provided in this utility model, steel body maximum outside diameter 118mm, interior latus rectum 56mm,
The long 300mm of upper and lower packing element, spacing 1200mm sets pressure reduction 1.0MPa, the starting differential pressure 4.0MPa of check valve 8, in upper and lower slot
The long 1.0mm of Xin Guan focal lengths direction slot, wide 0.5mm, upper and lower joint button-type is 2-7/8 " EUE.The upper and lower slotted base
Pipe adopts 35CrMo materials processings, thermally treated HB197 ~ 235, and carries out slot using line cutting technology in focal length direction
Hole, is that packing element sets offer liquid feed channel；The oil resistant hydrogenated nitrile-butadiene rubber that upper and lower packing element is protected using shoulder（HNBR）,
With very high high temperature resistant, anticorrosive, wear-resisting, anti-shear performance；Check valve 8 adopts stainless steel material, bore DN06-32 to open
Open pressure 4.0MPa；Slotted base pipe, check valve 8 etc. are not allow for the defects such as crackle, pore during processing and manufacturing.
Seat 6, the lower rubber cylinder seat of honour 9, upper and lower slotted base pipe pass through under unidirectional valve body 7 and upper packing element in this utility model
Threaded connection.
Check valve 8 in this utility model is threadedly coupled with unidirectional valve body 7 by the valve seat in check valve 8.
Connected mode of the present utility model is threaded connection, in order to dismantling, changing and maintain.
Application mode of the present utility model is：
1. first the old well shaft of Oil/gas Well carries out looking for before omission of examination leakage operation, should be according to the prediction of early stage pit shaft working condition
The no position for having leak source and a leak source, probably provides a well depth position.
2., according to looking for the omission of examination to leak packer tubular column structure figure, the expanding pressure reduction is opened and finely looks for the omission of examination to leak packer
It is connected to and looks for the corresponding position of omission of examination leakage packer tubing string.
3. complete it is above-mentioned look for after omission of examination leakage packer tubing string connection, this is looked for enter in advance under omission of examination leakage packer tubing string
The well depth position of prediction.
4. under tubing string in place after, the infusion liquid from tubing string, liquid along tubing string reach this finely look for the omission of examination leak packer
At upper slotted base pipe 4 and the slot hole of lower slotted base pipe 10 and check valve 8, because upper packing element 5 and lower rubber cylinder 11 set pressure reduction
It is less than check valve starting differential pressure, so liquid enters slotted base pipe outer wall and upper packing element 5 and the inwall of lower rubber cylinder 11 from slot hole
Between annular region when, when inside and outside differential pressure is more than 1.0MPa, upper packing element 5 and lower rubber cylinder 11 initially set；With infusion liquid
The increase of body discharge capacity, fluid pressure is raised in upper slotted base pipe 4, when setting a section sleeve ring more than upper packing element 5 and lower rubber cylinder 11
After empty fluid pressure 4.0MPa, check valve 8 is positive to be opened, and liquid sets section from check valve 8 into upper packing element 5 and lower rubber cylinder 11
Between limited closed casing annulus region.
5. continue to improve infusion discharge capacity and keep stable, if now well head pump pressure is decreased obviously, this illustrates that this is finely looked for Lou
Test packing element 5 and lower rubber cylinder 11 on Lou packer and set intersegmental sleeve pipe appearance leakage, leak source position is at the well depth；If now well
Mouth pump pressure does not decline, and rises on the contrary, and this illustrates that this finely looks for packing element 5 and lower rubber cylinder 11 on omission of examination leakage packer to set intersegmental sleeve pipe
It is intact, without leakage.Judge whether this finely looks for packing element 5 and lower rubber cylinder 11 on omission of examination leakage packer to set intersegmental sleeve pipe complete accordingly
Whole, pit shaft looks for omission of examination leakage operation, and whether success is effective.
6. complete the prediction well depth position wellbore casing to look for after omission of examination leakage operation, if sleeve pipe is not leaked, termination of pumping is let out
Pressure, this finely looks for packing element 5 and lower rubber cylinder 11 on omission of examination leakage packer to unseal, 1 ~ 2m of upper lifting pipe post.
7. then according to 4,5 two steps carry out other shaft locations and look for the omission of examination to leak operation, until completing pit shaft design
It is all to look for omission of examination blind hole depth position.
8. complete the old well shaft of Oil/gas Well to look for after the whole work of omission of examination leakage, termination of pumping pressure release acts this and finely looks for omission of examination leakage envelope
Every device tubing string, this is dismantled in time and finely looks for the omission of examination to leak packer, check that this finely looks for omission of examination leakage packing element, the feelings of check valve 8
Condition, maintains or changes this and finely look for the omission of examination to leak packer, subsequently to look for omission of examination leakage operation to use again.
Claims (8)
1. a kind of expanding pressure reduction is opened and finely looks for the omission of examination to leak packer, it is characterised in that：Including upper packing element（5）And lower rubber cylinder
（11）, the upper packing element（5）Two ends are connected to the packing element seat of honour（3）With seat under upper packing element（6）；The lower rubber cylinder（11）Two
End is connected to the lower rubber cylinder seat of honour（9）With seat under lower rubber cylinder（12）；Seat under the upper packing element（6）With the lower rubber cylinder seat of honour（9）It
Between pass through unidirectional valve body（7）Connection, the unidirectional valve body（7）It is provided with check valve（8）；The upper packing element（5）Inside it is provided with
Upper slotted base pipe（4）, the lower rubber cylinder（11）Inside it is provided with lower slotted base pipe（10）.
2. a kind of expanding pressure reduction according to claim 1 is opened and finely looks for the omission of examination to leak packer, it is characterised in that：It is described
Check valve（8）Including valve seat（14）, spring（15）And valve element（16）, described spring（15）Positioned at valve seat（14）And valve element（16）
Between.
3. a kind of expanding pressure reduction according to claim 1 is opened and finely looks for the omission of examination to leak packer, it is characterised in that：It is described
Lower rubber cylinder under seat（12）Lower end is connected with lower contact（13）；The upper packing element seat of honour（3）On be connected with top connection（1）.
4. a kind of expanding pressure reduction according to claim 3 is opened and finely looks for the omission of examination to leak packer, it is characterised in that：It is described
Top connection（1）With the upper packing element seat of honour（3）By sealing ring（2）It is tightly connected.
5. a kind of expanding pressure reduction according to claim 1 is opened and finely looks for the omission of examination to leak packer, it is characterised in that：It is described
Upper packing element（5）And lower rubber cylinder（11）Structure it is identical, long 300mm, spacing 1200mm sets pressure reduction 1.0MPa.
6. a kind of expanding pressure reduction according to claim 1 is opened and finely looks for the omission of examination to leak packer, it is characterised in that：It is described
Upper slotted base pipe（4）With lower slotted base pipe（10）Length direction local be provided with slot, the long 1.0mm of its slot is wide
0.5mm。
7. a kind of expanding pressure reduction according to claim 1 is opened and finely looks for the omission of examination to leak packer, it is characterised in that：It is described
Upper slotted base pipe（4）With lower slotted base pipe（10）Adopt 35CrMo materials processings, hardness HB197 ~ 235.
8. a kind of expanding pressure reduction according to claim 1 is opened and finely looks for the omission of examination to leak packer, it is characterised in that：It is described
Upper packing element（5）And lower rubber cylinder（11）Structure is identical, the oil resistant hydrogenated nitrile-butadiene rubber protected using shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621180178.XU CN206158664U (en) | 2016-10-27 | 2016-10-27 | Meticulous omission of examination hourglass packer of looking for is opened to expanding pressure differential |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621180178.XU CN206158664U (en) | 2016-10-27 | 2016-10-27 | Meticulous omission of examination hourglass packer of looking for is opened to expanding pressure differential |
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| Publication Number | Publication Date |
|---|---|
| CN206158664U true CN206158664U (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621180178.XU Active CN206158664U (en) | 2016-10-27 | 2016-10-27 | Meticulous omission of examination hourglass packer of looking for is opened to expanding pressure differential |
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| CN (1) | CN206158664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351602A (en) * | 2016-10-27 | 2017-01-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Expanding type differential pressure opening type fine leakage finding and leakage checking packer |
-
2016
- 2016-10-27 CN CN201621180178.XU patent/CN206158664U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351602A (en) * | 2016-10-27 | 2017-01-25 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Expanding type differential pressure opening type fine leakage finding and leakage checking packer |
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