CN206693941U - One kind dispensing sand control string - Google Patents
One kind dispensing sand control string Download PDFInfo
- Publication number
- CN206693941U CN206693941U CN201720318693.8U CN201720318693U CN206693941U CN 206693941 U CN206693941 U CN 206693941U CN 201720318693 U CN201720318693 U CN 201720318693U CN 206693941 U CN206693941 U CN 206693941U
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- CN
- China
- Prior art keywords
- sand
- oil pipe
- pipe
- packer
- tubing string
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Abstract
The utility model discloses one kind to dispense sand control string, belongs to petroleum production engineering field.The dispensing sand control string comprises at least first paragraph oil pipe and second segment oil pipe,First gear sand packer is provided between first paragraph oil pipe and second segment oil pipe,Second gear sand packer and sand-proof pipe,Sand-proof pipe includes internal lining pipe and outer liner tube,First passage is offered on first gear sand packer,First passage connects between oil pipe and sleeve pipe and the space above first gear sand packer and the space between internal lining pipe and outer liner tube,Second channel is offered on second gear sand packer,Second channel connects between oil pipe and sleeve pipe and the space below second gear sand packer and the space between internal lining pipe and outer liner tube,Sand control screen cloth is provided with outer liner tube,Sand is blocked in outer liner tube,Between first gear sand packer and second gear sand packer,Realize the function of sand control,And then avoid the influence due to shaking out to water injection string working life.
Description
Technical field
Petroleum production engineering field is the utility model is related to, more particularly to a kind of dispensing sand control string.
Background technology
As China major part oil field enters the middle and later periods of exploitation, waterflooding extraction is opened as what each elephant generally used
Adopt technology.During waterflooding extraction, it is more universal that water injection well runs into the problem of shaking out.How to optimize tubing string, improve water injection string
Useful life, the problem of turning into urgent need to resolve.
In the prior art, the water injection well in oil field whether shakes out equal generally use routine zone separate injection technical string.
During the utility model is realized, designer has found that prior art at least has problems with：
Existing conventional zone separate injection technical string needs frequent well-flushing, periodic replacement dispensing pipe for the water injection well slightly to shake out
Post, and the water injection well for seriously shaking out, can not complete water flood operations.
Utility model content
In consideration of it, the utility model provides a kind of dispensing sand control string, the purpose of water injection pipe sand control is realized.
One kind dispensing sand control string, the tubing string comprise at least first paragraph oil pipe and second segment oil pipe；
The tubing string is located in sleeve pipe, be provided between the first paragraph oil pipe and second segment oil pipe first gear sand seal every
Device, second gear sand packer and sand-proof pipe；
The first gear sand packer upper end is socketed with the first paragraph oil pipe, and lower end and the upper end of the sand-proof pipe cover
Connect；The second gear sand packer upper end and the lower end of the sand-proof pipe are socketed, and lower end is socketed with second segment oil pipe；The sand control
Pipe includes internal lining pipe and outer liner tube；First passage is offered on the first gear sand packer, the first passage connection is located at
Space between the oil pipe and sleeve pipe and above the first gear sand packer and positioned at the internal lining pipe and outer liner tube
Between space；Offer second channel on the second gear sand packer, the second channel connection positioned at the oil pipe with
Between the sleeve pipe and space below the second gear sand packer and the space between the internal lining pipe and outer liner tube；
Sand control screen cloth is provided with the outer liner tube, the sand outside described sleeve pipe is blocked in the outer liner tube, institute
State between first gear sand packer and the second gear sand packer.
Further, the tubing string also includes at least one centralizer, and the centralizer is socketed in the oil pipe, is located at
The first gear sand packer top or the lower section of the second gear sand packer.
Further, the tubing string also includes at least one injection well downhole flow regulator, and the injection well downhole flow regulator is socketed in the oil pipe, is located at
Above the first gear sand packer.
Further, the injection well downhole flow regulator tells concentric roater regulator for anti-return.
Further, the tubing string also includes at least one packer, and the packer is socketed in the oil pipe, is located at
The top of the injection well downhole flow regulator.
Further, the tubing string also includes bidirectional anchor, and the bidirectional anchor is socketed in the upper end of the oil pipe.
Further, the tubing string is also socketed in the oil pipe including back-buckling type safety joint, the back-buckling type safety
The position height of joint is higher than the position height of the bidirectional anchor.
Further, the tubing string also includes sand settling type ball-and-seat, and the sand settling type ball-and-seat is socketed in the oil pipe
Lower end.
Further, the tubing string also includes plug, and the tubing string also includes plug, and the plug is arranged on the oil pipe
The port of lower end, for blocking the oil pipe.
Further, the tubing string also includes the fluid pressure type safety joint being socketed in the oil pipe.
The beneficial effect of technical scheme that the utility model embodiment provides is：
Dispensing sand control string of the present utility model, including at least first paragraph oil pipe and second segment oil pipe, tubing string is located at
In sleeve pipe, first gear sand packer, second gear sand packer and sand-proof pipe are provided between first paragraph oil pipe and second segment oil pipe,
First gear sand packer upper end is socketed with first paragraph oil pipe, and the upper end of lower end and sand-proof pipe is socketed, second gear sand packer upper end
Be socketed with the lower end of sand-proof pipe, lower end is socketed with second segment oil pipe, and sand-proof pipe includes internal lining pipe and outer liner tube, first gear sand seal every
First passage, sky of the first passage connection between oil pipe and sleeve pipe and above first gear sand packer are offered on device
Between and the space between internal lining pipe and outer liner tube, second channel, second channel connection are offered on second gear sand packer
Space between oil pipe and sleeve pipe and below the second gear sand packer and the sky between internal lining pipe and outer liner tube
Between, sand control screen cloth is provided with outer liner tube, the sand outside sleeve pipe is blocked in outer liner tube, first gear sand packer and second
Between sand block packer so that sand can not enter space between oil pipe and sleeve pipe, realize the function of sand control, and then avoid by
In the influence to water injection string working life of shaking out.
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 a kind of structural representation for dispensing sand control string of the utility model.
Reference in figure represents respectively：
1st, back-buckling type safety joint；2nd, bidirectional anchor；3rd, packer；4th, injection well downhole flow regulator；5th, centralizer；6th, first gear sand seal
Every device；7th, sand-proof pipe；8th, second gear sand packer；9th, fluid pressure type safety joint；10th, sand settling type ball-and-seat；11st, sand setting oil pipe；
12nd, plug；13rd, sleeve pipe；14th, well mouth check valve.
Embodiment
To make the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with accompanying drawing
Mode is described in further detail.
The utility model embodiment provides a kind of dispensing sand control string, as shown in figure 1, tubing string comprises at least first
Section oil pipe and second segment oil pipe, tubing string are located in sleeve pipe 13, and the first sand block is provided between first paragraph oil pipe and second segment oil pipe
Packer 6, second gear sand packer 8 and sand-proof pipe 7, the upper end of first gear sand packer 6 are socketed with first paragraph oil pipe, and lower end is with preventing
The upper end socket of sandpipe 7, the upper end of second gear sand packer 8 and the lower end of sand-proof pipe 7 are socketed, and lower end is socketed with second segment oil pipe,
Sand-proof pipe 7 includes internal lining pipe and outer liner tube, and first gear sand seal offers first passage on 6, and first passage connection is located at oil pipe
Between sleeve pipe 13 and it is located at the space of the top of first gear sand packer 6 and the space between internal lining pipe and outer liner tube, the
Second channel is offered on two sand block packers 8, second channel connects between oil pipe and sleeve pipe 13 and is located at the second sand block
The space and the space between internal lining pipe and outer liner tube of the lower section of packer 8, sand control screen cloth are provided with outer liner tube, from set
Sand outside pipe 13 is blocked between outer liner tube, first gear sand packer 6 and second gear sand packer 8 so that sand can not
Space between oil pipe and sleeve pipe 13, realizes the function of sand control, and then avoids due to shaking out to water injection string working life
Influence.
In order to which the function of dispensing sand control string is better achieved, tubing string also includes at least one centralizer 5, centralizer
5 are socketed in oil pipe, above first gear sand packer 6 or second gear sand packer 8 lower section, for righting tubing string, enter
And improve the life-span of packer 3；Tubing string also includes at least one injection well downhole flow regulator 4, and injection well downhole flow regulator 4 is socketed in oil pipe, positioned at first gear
The top of sand packer 6, for the water in oil pipe to be flowed into the space between oil pipe and sleeve pipe 13 by water nozzle, in the present embodiment
Middle injection well downhole flow regulator 4 tells concentric roater regulator for anti-return；Tubing string also includes at least one packer 3, and packer 3 is socketed in oil pipe, position
In the top of injection well downhole flow regulator 4, for insulating the space between oil pipe and sleeve pipe 13, wherein, selected for general sand output well packer
Y341 type packers, for serious packing of shaking out, preferably K344 packers.
Meanwhile tubing string also includes bidirectional anchor 2, bidirectional anchor 2 is socketed in the upper end of oil pipe, prevents bidirectional anchor
2 sand cards or corrosion and scaling；Tubing string also includes back-buckling type safety joint 1, and back-buckling type safety joint 1 is socketed in oil pipe, back-buckling type
The position height of safety joint 1 be higher than bidirectional anchor 2 position height, for when there are abnormal conditions in tubing string by oil pipe just
Turn back-off, and act the oil pipe on the top of back-buckling type safety joint 1, it is necessary to explanation, 1 optional work of back-buckling type safety joint
Tool, it can be selected to remove or retain according to actual conditions when pipe string technology designs；Tubing string also includes sand settling type ball-and-seat 10, sand settling type
Ball-and-seat 10 is socketed in the lower end of oil pipe, for preventing oily liquid in pipe is earthward counter from telling；Tubing string also includes plug 12, plug 12
The port of oil pipe lower end is arranged on, for blocking oil pipe；Tubing string also includes the fluid pressure type safety joint 9 being socketed in oil pipe,
Fluid pressure type safety joint 9 is arranged between packer 3 and injection well downhole flow regulator 4 in the present embodiment, for preventing the generation of down-hole accident.
It should be noted that sand setting oil pipe 11 is provided between plug 12 and sand settling type ball-and-seat 10, for because of a variety of causes
Sink in sand setting oil pipe 11, avoid because sand buries sand settling type by the sand setting passage of sand settling type ball-and-seat 10 into the impurity in oil pipe
Tubing string caused by ball-and-seat 10 can not well-flushing problem.
During the use of reality, during water filling, water is injected into oil pipe from well mouth check valve 14, injection water passes through water distribution
The space that the water nozzle of device is entered between oil pipe and sleeve pipe 13, due to space of the packer setting between oil pipe and sleeve pipe 13
In so that injection water can only be flowed in the space of restriction, and can not be between whole oil pipe and sleeve pipe 13 space in flow,
Injection water flows through first gear sand packer by first passage, is successively penetrated out through sand control screen cloth, outer liner tube and sleeve pipe 13 logical
Hole, stratum is flowed into, realizes the injecting process；When stopping note, the through hole sleeve pipe 13 that the liquid told is penetrated out from sleeve pipe 13 is returned on stratum, stream
The sand entered is blocked between outer liner tube, first gear sand packer 6 and second gear sand packer 8 so that sand can not enter
Space between oil pipe and sleeve pipe 13, realizes the function of sand control, and then avoids the shadow due to shaking out to water injection string working life
Ring, meanwhile, when water filling again, sand can be re-introduced into stratum with injection water.
It is described above to be for only for ease of it will be understood by those skilled in the art that the technical solution of the utility model, not to
Limit the utility model.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc.,
It should be included within the scope of protection of the utility model.
Claims (10)
1. one kind dispensing sand control string, it is characterised in that the tubing string comprises at least first paragraph oil pipe and second segment oil pipe；
The tubing string is located in sleeve pipe, and first gear sand packer, are provided between the first paragraph oil pipe and second segment oil pipe
Two sand block packers and sand-proof pipe；
The first gear sand packer upper end is socketed with the first paragraph oil pipe, and lower end and the upper end of the sand-proof pipe are socketed；Institute
State second gear sand packer upper end and the lower end of the sand-proof pipe to be socketed, lower end is socketed with second segment oil pipe；The sand-proof pipe bag
Include internal lining pipe and outer liner tube；First passage is offered on the first gear sand packer, the first passage connection is positioned at described
Space between oil pipe and sleeve pipe and above the first gear sand packer and between the internal lining pipe and outer liner tube
Space；Second channel is offered on the second gear sand packer, the second channel connection is located at the oil pipe and sleeve pipe
Between and the space below the second gear sand packer and the space between the internal lining pipe and outer liner tube；
Sand control screen cloth is provided with the outer liner tube, the sand outside described sleeve pipe is blocked in the outer liner tube, described
Between one sand block packer and the second gear sand packer.
2. tubing string according to claim 1, it is characterised in that the tubing string also includes at least one centralizer, described to help
Positive device is socketed in the oil pipe, above the first gear sand packer or the second gear sand packer lower section.
3. tubing string according to claim 1, it is characterised in that the tubing string also includes at least one injection well downhole flow regulator, described to match somebody with somebody
Hydrophone is socketed in the oil pipe, above the first gear sand packer.
4. tubing string according to claim 3, it is characterised in that the injection well downhole flow regulator tells concentric roater regulator for anti-return.
5. tubing string according to claim 4, it is characterised in that the tubing string also includes at least one packer, the envelope
It is socketed in every device in the oil pipe, positioned at the top of the injection well downhole flow regulator.
6. tubing string according to claim 1, it is characterised in that the tubing string also includes bidirectional anchor, and the well is double
The upper end of the oil pipe is socketed in anchor.
7. tubing string according to claim 6, it is characterised in that the tubing string is also socketed in institute including back-buckling type safety joint
State in oil pipe, the position height of the back-buckling type safety joint is higher than the position height of the bidirectional anchor.
8. tubing string according to claim 1, it is characterised in that the tubing string also includes sand settling type ball-and-seat, the sand setting
Formula ball-and-seat is socketed in the lower end of the oil pipe.
9. tubing string according to claim 1, it is characterised in that the tubing string also includes plug, and the plug is arranged on institute
The port of oil pipe lower end is stated, for blocking the oil pipe.
10. tubing string according to claim 1, it is characterised in that the tubing string also includes the liquid being socketed in the oil pipe
Pressure type safety joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720318693.8U CN206693941U (en) | 2017-03-29 | 2017-03-29 | One kind dispensing sand control string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720318693.8U CN206693941U (en) | 2017-03-29 | 2017-03-29 | One kind dispensing sand control string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206693941U true CN206693941U (en) | 2017-12-01 |
Family
ID=60441032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720318693.8U Active CN206693941U (en) | 2017-03-29 | 2017-03-29 | One kind dispensing sand control string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206693941U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561107A (en) * | 2018-06-28 | 2018-09-21 | 唐山冀东石油机械有限责任公司 | Multistage water injection process pipe string and its remove method |
-
2017
- 2017-03-29 CN CN201720318693.8U patent/CN206693941U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561107A (en) * | 2018-06-28 | 2018-09-21 | 唐山冀东石油机械有限责任公司 | Multistage water injection process pipe string and its remove method |
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