CN208137921U - A kind of packing element anchoring separate layer water injection string - Google Patents
A kind of packing element anchoring separate layer water injection string Download PDFInfo
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- CN208137921U CN208137921U CN201820199523.7U CN201820199523U CN208137921U CN 208137921 U CN208137921 U CN 208137921U CN 201820199523 U CN201820199523 U CN 201820199523U CN 208137921 U CN208137921 U CN 208137921U
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- flow regulator
- injection well
- downhole flow
- well downhole
- packer
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Abstract
The utility model provides a kind of packing element anchoring separate layer water injection string, including oil pipe, it is provided with upper injection well downhole flow regulator, middle injection well downhole flow regulator, lower injection well downhole flow regulator from top to bottom on the oil pipe, upper anchoring packer, layer separating packer, lower anchoring packer are additionally provided on the oil pipe, layer separating packer is both provided between the upper injection well downhole flow regulator, middle injection well downhole flow regulator and between middle injection well downhole flow regulator, lower injection well downhole flow regulator, the upper anchoring packer is located at the top of upper injection well downhole flow regulator, and the lower anchoring packer is located at the lower section of lower injection well downhole flow regulator.Interlayer anchoring packer is both provided between the upper injection well downhole flow regulator, middle injection well downhole flow regulator and between middle injection well downhole flow regulator, lower injection well downhole flow regulator.The fit applications of anchoring packer are effectively anchored separate layer water injection string, ensure layered seal effect, extend tubing string validity period, meanwhile, it avoids the damage to casing and eliminates later period inspection pipe and meet the risk that card hands over overhaul.
Description
Technical field
The utility model relates to water injection string, especially a kind of packing element is anchored separate layer water injection string.
Background technique
Seperated layer water injection is the means the most cost-effective that long-term high yeild stable yields is realized in oil field.Since conditions down-hole is complicated,
Separate layer water injection string can usually wriggle because of unbalance stress, so that influencing the sealing effect of layer separating packer leads to water injection string
Layering failure.The method for being anchored water injection string under present condition using tools such as mating hydraulic anchor, hydraulic slips is to utilize anchor
Contact firmly to realize the anchoring to tubing string for tooth and slip insert and internal surface of sleeve pipe, it is not only easy that casing is caused to damage, more exist
Later period working string meets the risk that card hands over overhaul.
By patent searching library, in water injection string, the anchor being substantially contacts anchoring firmly, does not find to use
The water injection string of anchoring packer, in addition anchoring packer is the double glue of the prior art, direct use, such as anchor expanding type
Cylinder packer 200920219557.9, anchoring expansion type packer 200910016235.9.
Utility model content
The purpose of the utility model is to provide a kind of packing elements to be anchored separate layer water injection string, and the fit applications of anchoring packer have
Effect anchoring separate layer water injection string, ensures layered seal effect, extends tubing string validity period, meanwhile, avoid damage to casing and
It eliminates later period inspection pipe and meets the risk that card hands over overhaul.
The purpose of this utility model can be achieved by the following technical measures：
The packing element be anchored separate layer water injection string include oil pipe, be provided with from top to bottom on the oil pipe upper injection well downhole flow regulator, in
Injection well downhole flow regulator, lower injection well downhole flow regulator fill the water layer wherein filling the water layer on upper injection well downhole flow regulator is corresponding, during middle injection well downhole flow regulator is corresponding, under lower injection well downhole flow regulator is corresponding
Layer is filled the water, is additionally provided with upper anchoring packer, layer separating packer, lower anchoring packer on the oil pipe, the upper injection well downhole flow regulator,
Layer separating packer is both provided between middle injection well downhole flow regulator and between middle injection well downhole flow regulator, lower injection well downhole flow regulator, i.e. layer separating packer is located at water filling
Between any two, the upper anchoring packer is located at the top of upper injection well downhole flow regulator to layer, that is, is higher than critical surface on upper water filling layer, described to cast anchor
Determine the lower section that packer is located at lower injection well downhole flow regulator, i.e., lower than bet water layer lower critical face.
The purpose of this utility model can be also achieved by the following technical measures：
Interlayer anchoring envelope is both provided between the upper injection well downhole flow regulator, middle injection well downhole flow regulator and between middle injection well downhole flow regulator, lower injection well downhole flow regulator
Every device, i.e. interlayer anchoring packer is located at water filling layer between any two.
Tubing string Telescopic short piece is also set up on the oil pipe, tubing string Telescopic short piece is located above upper anchoring packer.
Sequentially connected check valve, screen casing, silk plug from top to bottom are also set up on the oil pipe, the check valve is connected to down
The lower section of anchoring packer.
The utility model has the advantages that compared with prior art：
The utility model uses anchor tool of the inflatable anchoring packer as separate layer water injection string, is insulated using anchoring
Device packing element is swollen to be tamping soft anchoring of the stiction realization packing element of patch internal surface of sleeve pipe to water injection string.On tubular column structure, filling the water
The above tubing string of interval is provided with tubing string Telescopic short piece, to adapt to the deformation of the above oil pipe of water injection string, prevents to wriggle.Water filling
In the tubing string of interval, it is provided with upper anchoring packer being located at the above position in the top oil reservoir upper bound, is being located at bottom oil layer lower bound
Following position is provided with lower anchoring packer, and interlayer can be arranged in nearly layer separating packer position according to specific requirements in oil layer section tubing string
Anchoring packer.The use of anchoring packer can effectively be anchored separate layer water injection string, prevent it from wriggling.Meanwhile it is logical
It crosses the upper anchoring packer of setting and lower anchoring packer ensure that water filling interval tubing string whole stress equalization in the injecting process, from
And further reduce the peristaltic forces of tubing string.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the structural schematic diagram of another embodiment.
Specific embodiment
Detailed description and technology contents in relation to the utility model, cooperation Detailed description of the invention is as follows, however attached drawing is only to refer to
With purposes of discussion, not it is used to limit the utility model.
A kind of tubular column structure is as shown in Figure 1, tubing string Telescopic short piece 1；Upper anchoring packer 2；Upper injection well downhole flow regulator 31, middle injection well downhole flow regulator
32, lower injection well downhole flow regulator 33；Layer separating packer 4；Lower anchoring packer 5；Check valve+screen casing+silk plug 6.
As shown in Fig. 1, a kind of packing element is anchored separate layer water injection string, including oil pipe, sets from top to bottom on the oil pipe
It is equipped with injection well downhole flow regulator 31, middle injection well downhole flow regulator 32, lower injection well downhole flow regulator 33, fills the water layer wherein going up injection well downhole flow regulator and corresponding to, in middle injection well downhole flow regulator correspondence
Fill the water layer, the corresponding bet water layer of lower injection well downhole flow regulator, be additionally provided on the oil pipe upper anchoring packer 2, layer separating packer 4, under
Anchoring packer 5 is both provided with layering envelope between the upper injection well downhole flow regulator, middle injection well downhole flow regulator and between middle injection well downhole flow regulator, lower injection well downhole flow regulator
Every device 4, i.e. layer separating packer is located at water filling layer between any two, and the upper anchoring packer is located at the top of upper injection well downhole flow regulator, i.e., high
In critical surface on upper water filling layer, the lower anchoring packer is located at the lower section of lower injection well downhole flow regulator, i.e., lower than bet water layer lower critical face.
Tubing string Telescopic short piece 1 is also set up on the oil pipe, tubing string Telescopic short piece is located above upper anchoring packer.
Sequentially connected check valve, screen casing, silk plug from top to bottom are also set up on the oil pipe, the check valve is connected to down
The lower section of anchoring packer.
The primary structure of the process is using anchoring packer as water injection string anchor tool, and using above casting anchor
That determines packer is applied in combination guarantee water filling interval tubing string stress equalization to reduce string creep power, while it is short to be stretched by tubing string
Section offsets the deformation of the water filling above oil pipe of section tubing string, prevents it from wriggling.The design of tubing string bottom has bottom ball+screen casing+silk plug group
Conjunction meets well-flushing demand.
A kind of tubular column structure is as shown in Fig. 2, tubing string Telescopic short piece 1；Upper anchoring packer 2；Upper injection well downhole flow regulator 31, middle injection well downhole flow regulator
32, lower injection well downhole flow regulator 33；Layer separating packer 4-1；Interlayer anchoring packer 4-2；Lower anchoring packer 5；Check valve+screen casing+silk plug
6。
As shown in Fig. 2, a kind of packing element is anchored separate layer water injection string, including oil pipe, sets from top to bottom on the oil pipe
It is equipped with injection well downhole flow regulator 31, middle injection well downhole flow regulator 32, lower injection well downhole flow regulator 33, fills the water layer wherein going up injection well downhole flow regulator and corresponding to, in middle injection well downhole flow regulator correspondence
Fill the water layer, the corresponding bet water layer of lower injection well downhole flow regulator, be additionally provided on the oil pipe upper anchoring packer 2, layer separating packer 4-1,
Lower anchoring packer 5 is both provided with layering between the upper injection well downhole flow regulator, middle injection well downhole flow regulator and between middle injection well downhole flow regulator, lower injection well downhole flow regulator
Packer 4-1, i.e. layer separating packer are located at water filling layer between any two, and the upper anchoring packer is located at the top of upper injection well downhole flow regulator,
It is higher than critical surface on upper water filling layer, the lower anchoring packer is located at the lower section of lower injection well downhole flow regulator, that is, is lower than under bet water layer and faces
Interface.Interlayer anchoring packer is both provided between the upper injection well downhole flow regulator, middle injection well downhole flow regulator and between middle injection well downhole flow regulator, lower injection well downhole flow regulator
4-2, i.e. interlayer anchoring packer are located at water filling layer between any two.
Tubing string Telescopic short piece is also set up on the oil pipe, tubing string Telescopic short piece is located above upper anchoring packer.The oil
Sequentially connected check valve, screen casing, silk plug from top to bottom are also set up on pipe, the check valve is connected under lower anchoring packer
Side.
The primary structure of the process is using anchoring packer as water injection string anchor tool, and using above casting anchor
That determines packer is applied in combination guarantee water filling interval tubing string stress equalization to reduce string creep power, while it is short to be stretched by tubing string
Section offsets the deformation of the water filling above oil pipe of section tubing string, prevents it from wriggling.The design of tubing string bottom has bottom ball+6 groups of screen casing+silk plug
Conjunction meets well-flushing demand.
Embodiment：
After separate layer water injection string is lowered into oil reservoir position according to the structure of design, water injection well is just filled the water, anchoring packer and
Layer separating packer can be completed using the pressure difference between water filling and stratum and set.During water filling, the glue of anchoring packer
Envelope that cylinder is swollen can be closely attached to play the role of being anchored water injection string on internal surface of sleeve pipe.And due in water filling interval tubing string
It is upper to be provided with upper and lower anchoring packer, so that the tubing string stress equalization of each water filling interval of water injection pipe shell of column is to ensure that
Entire water filling interval tubing string stress equalization, further weakens the wriggling of tubing string, extends tubing string validity period.It is flexible by tubing string simultaneously
The flexible deformation quantity that can offset the above oil pipe of water injection string of pipe nipple, prevents it from wriggling.When stopping note, anchoring packer glue
Cylinder is withdrawn, and is released the anchoring to tubing string and is acted on.The design of tubing string bottom has check valve+screen casing+silk plug combination, realizes anti-flushing well.
The utility model, to the soft anchoring of tubing string, can be effectively prevented wriggling of the tubing string in the injecting process and cause using packing element
The problem of layering failure, and can cause damage to avoid existing anchor tool to casing and reduce later period inspection pipe to meet card friendship overhaul
Risk.
The above is only the preferred embodiment of the present invention, non-the scope of the patents to limit the utility model,
He uses the equivalence changes of the utility model patent spirit, should all belong to the scope of the patents of the utility model.
Claims (5)
1. a kind of packing element is anchored separate layer water injection string, including oil pipe, be provided with from top to bottom on the oil pipe upper injection well downhole flow regulator, in
Injection well downhole flow regulator, lower injection well downhole flow regulator fill the water layer wherein filling the water layer on upper injection well downhole flow regulator is corresponding, during middle injection well downhole flow regulator is corresponding, under lower injection well downhole flow regulator is corresponding
Fill the water layer, which is characterized in that upper anchoring packer, layer separating packer, lower anchoring packer, institute are additionally provided on the oil pipe
It states between injection well downhole flow regulator, middle injection well downhole flow regulator and is both provided with layer separating packer between middle injection well downhole flow regulator, lower injection well downhole flow regulator, i.e. layering packing
Device is located at water filling layer between any two, and the upper anchoring packer is located at the top of upper injection well downhole flow regulator, that is, is higher than critical on upper water filling layer
Face, the lower anchoring packer are located at the lower section of lower injection well downhole flow regulator, i.e., lower than bet water layer lower critical face.
2. a kind of packing element according to claim 1 is anchored separate layer water injection string, which is characterized in that the upper injection well downhole flow regulator, in
Interlayer anchoring packer, i.e. interlayer anchoring packer position are both provided between injection well downhole flow regulator and between middle injection well downhole flow regulator, lower injection well downhole flow regulator
Between any two in water filling layer.
3. a kind of packing element according to claim 2 is anchored separate layer water injection string, which is characterized in that also set up on the oil pipe
Tubing string Telescopic short piece, tubing string Telescopic short piece are located above upper anchoring packer.
4. a kind of packing element according to claim 3 is anchored separate layer water injection string, which is characterized in that also set up on the oil pipe
Sequentially connected check valve, screen casing, silk plug from top to bottom.
5. a kind of packing element according to claim 4 is anchored separate layer water injection string, which is characterized in that the check valve is connected to
The lower section of lower anchoring packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820199523.7U CN208137921U (en) | 2018-02-05 | 2018-02-05 | A kind of packing element anchoring separate layer water injection string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820199523.7U CN208137921U (en) | 2018-02-05 | 2018-02-05 | A kind of packing element anchoring separate layer water injection string |
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| CN208137921U true CN208137921U (en) | 2018-11-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681160A (en) * | 2018-02-05 | 2019-04-26 | 中国石油化工股份有限公司 | A kind of packing element anchoring separate layer water injection string and method |
| CN111335851A (en) * | 2018-12-19 | 2020-06-26 | 中国石油天然气股份有限公司 | Pre-compression layered gas injection pipe column implementation method |
-
2018
- 2018-02-05 CN CN201820199523.7U patent/CN208137921U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681160A (en) * | 2018-02-05 | 2019-04-26 | 中国石油化工股份有限公司 | A kind of packing element anchoring separate layer water injection string and method |
| CN111335851A (en) * | 2018-12-19 | 2020-06-26 | 中国石油天然气股份有限公司 | Pre-compression layered gas injection pipe column implementation method |
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