CN109854185A - A kind of bridge-type connector and single tube water flood recovery tubing string - Google Patents
A kind of bridge-type connector and single tube water flood recovery tubing string Download PDFInfo
- Publication number
- CN109854185A CN109854185A CN201711232033.9A CN201711232033A CN109854185A CN 109854185 A CN109854185 A CN 109854185A CN 201711232033 A CN201711232033 A CN 201711232033A CN 109854185 A CN109854185 A CN 109854185A
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- bridge
- inner tube
- packer
- type
- top connection
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Abstract
It includes: packer and the top connection and lower contact that are connected with packer upper and lower ends that the present invention, which provides a kind of bridge-type connector and single tube water flood recovery tubing string, the bridge-type connector,；And the side wall of top connection is equipped with multiple intercommunicating pores, the side wall of lower contact is equipped with the first long slot hole；It further include the bridge-type inner tube for being fixedly connected on the inside of lower contact, the side wall of bridge-type inner tube is equipped with the second long slot hole that is corresponding with the first long slot hole and linking together；Inner tube is connected, first end is fixedly connected in bridge-type inner tube, and second end is located on the intercommunicating pore of top connection.The single tube water flood recovery tubing string includes: bridge-type connector, and interior to be equipped with first runner and second flow channel, bridge-type connector includes packer；Flow string is connected with the upper end of bridge-type connector, and is connected with first runner；Water injection string is connected with the lower end of bridge-type connector, and is connected with second flow channel；The lower end of water injection string is equipped with sealing intubation.The configuration of the present invention is simple has achieved the purpose that the marginal not side of small casing multilateral well is adopted.
Description
Technical field
The present invention relates to petroleum works complete well oil recovery technique field more particularly to a kind of bridge-type connectors and single tube water flood recovery
Tubing string.
Background technique
Existing oil-water well is few while the requirement that is filled the water and recovered the oil, fills the water to some branch of multilateral well
Energy is supplemented, recovers the oil from remaining branch, is adopted with well marginal not side, usual consideration is being covered using the complete well of parallel double tube
Two root canal column of tripping in, an oil pipe fill the water downwards side by side in pipe, and another oil pipe recovers the oil from shaft bottom.But the complete well of parallel double tube needs
Larger diameter casing generally requires 95/8 " the above casing, the double tube tripping in more than 7 " casing is difficult to realize 27/8 ".And
The complete well of parallel double tube needs special two-tube well head, and tubing string removes trouble.
Therefore, how in the case of not being modified to well head, it is the technology faced now that realization is adopted with well marginal not side
Problem.
Summary of the invention
The features and advantages of the present invention partly state in the following description, or can from the description it is clear that or
Person can pass through practice present invention study.
To overcome problem of the prior art, the present invention provides a kind of bridge-type connector, comprising:
Packer；
Top connection is connected with the first end of the packer；The side wall of the top connection is equipped with multiple intercommunicating pores；
Lower contact is connected with the second end of the packer, and the side wall of the lower contact is equipped with the first long slot hole；
Bridge-type inner tube is fixedly connected on the inside of the lower contact, and the first end of the bridge-type inner tube, which is equipped with, to be open, and second
End is equipped with bottom, wherein the first end is close to the top connection；The side wall of the bridge-type inner tube is equipped with and first elongated slot
The second long slot hole hole correspondence and linked together；
Inner tube is connected, first end is fixedly connected in the opening of the bridge-type inner tube, and second end is located at the top connection
On intercommunicating pore；
The connection inner tube, the bridge-type inner tube, second long slot hole, first long slot hole form first runner；
Peripheral, the described lower contact shape of the intercommunicating pore of the top connection, peripheral, the described bridge-type inner tube for connecting inner tube
At second flow channel.
In a possible design, the second end of the connection inner tube is fixedly connected on the top connection.
In the present embodiment, sealing ring is equipped between the connection inner tube and above-mentioned top connection.
In a possible design, the packer is Y111 packer or hydrostatic packer.
The present invention also provides a kind of single tube water flood recovery tubing strings, comprising:
Bridge-type connector, interior to be equipped with first runner and second flow channel, the bridge-type connector includes packer；
Flow string is connected with the upper end of the bridge-type connector, and is connected with the first runner；
Water injection string is connected with the lower end of the bridge-type connector, and is connected with the second flow channel；The water injection string
Lower end be equipped with sealing intubation.
In a possible design, the bridge-type connector includes:
Packer；
Top connection is connected with the first end of the packer；The side wall of the top connection is equipped with multiple intercommunicating pores；
Lower contact is connected with the second end of the packer, and the side wall of the lower contact is equipped with the first long slot hole；
Bridge-type inner tube is fixedly connected on the inside of the lower contact, and the first end of the bridge-type inner tube, which is equipped with, to be open, and second
End is equipped with bottom, wherein the first end is close to the top connection；The side wall of the bridge-type inner tube is equipped with and first elongated slot
The second long slot hole hole correspondence and linked together；
Inner tube is connected, first end is fixedly connected in the opening of the bridge-type inner tube, and second end is located at the top connection
On intercommunicating pore；
The connection inner tube, the bridge-type inner tube, second long slot hole, first long slot hole form first runner；
Peripheral, the described lower contact shape of the intercommunicating pore of the top connection, peripheral, the described bridge-type inner tube for connecting inner tube
At second flow channel.
In the present embodiment, the second end of the connection inner tube is fixedly connected on the top connection.
In a possible design, the intubation is equipped with insertion pipe packer.
It further include casing in a possible design, for the packer setting for the bridge-type connector.
In a possible design, described sleeve pipe is equipped with the windowing window for connected pipes branch.
The present invention provides a kind of bridge-type connectors and single tube water flood recovery tubing string, can be realized through annulus water injection to lower part
In water injection string, oil recovery branch well fluids are entered in the flow string of top by bridge-type connector, simple and reliable for structure, are not needed
Mating two-tube well head can be realized same well marginal not side and adopt.
By reading specification, the feature of these technical solutions and interior is will be best understood in those of ordinary skill in the art
Hold.
Detailed description of the invention
It is specifically described the present invention below with reference to attached drawing and in conjunction with example, advantages of the present invention and implementation will
It is more obvious, wherein content only for the purpose of explanation of the present invention shown in attached drawing, without constitute to it is of the invention in all senses
On limitation, in the accompanying drawings:
Fig. 1 is the structural schematic diagram of the bridge-type connector of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the single tube water flood recovery tubing string of the embodiment of the present invention.
Specific embodiment
As shown in Figure 1, the present invention provides a kind of bridge-type connector, including packer 11, it is connected respectively with the packer both ends
Top connection 12 and lower contact 13 and connection inner tube 16, bridge-type inner tube 17 inside top connection and lower contact；Wherein:
Packer 11 can be Y111 packer or hydrostatic packer.Select Y111 packer that can be inserted into bottom in tubing string
After portion's packer, pushes realization and set；Select hydrostatic packer, can regulate in advance and set pressure, in place after, pass through annular space
Huge discharge water filling, improves annular pressure, and realization is set.
Top connection 12 is connected with first end, that is, upper end of packer 11；The side wall of the top connection 12 is equipped with multiple intercommunicating pores
14, it is connected to the inside of top connection 12；In the specific implementation, top connection 12 can be connected with packer 11 by screw thread.
Lower contact 13 is connected with second end, that is, lower end of the packer 11, and the side wall of the lower contact 13 is equipped with the first long slot hole
15；In the specific implementation, lower contact 13 can be equally connected by screw thread with packer 11.
Bridge-type inner tube 17 is fixedly connected on the inside of the lower contact 13, and the first end of the bridge-type inner tube 13 is equipped with opening, the
Two ends are equipped with bottom, and wherein the first end is close to top connection 12, and second end is far from top connection 12；
The side wall of bridge-type inner tube 17 is equipped with the second length that is corresponding with the first long slot hole 15 in lower contact and linking together
Slot 18；More specifically, the first long slot hole 15 is connected with the second long slot hole 18, and can be fixedly connected by modes such as welding
Together.
The first end of connection inner tube 16 is fixedly connected in the opening of 17 first end of bridge-type inner tube, in the specific implementation,
Connection inner tube 16 is connected with bridge-type inner tube 17 by screw thread, and is also provided with sealing ring between the two.
The second end of connection inner tube 16 is located on the intercommunicating pore 14 of the top connection 12；That is, via connection 14 into
Entering to the liquid inside top connection 12 will not enter in connection inner tube 16；In one embodiment of the invention, it connects
The second end of inner tube 16 is fixedly connected on the inner wall of the top connection 12, is e.g. fixed threadably,
Sealing ring is also provided between connection inner tube 16 and top connection 12.
Above-mentioned connection inner tube 16, bridge-type inner tube 18, the second long slot hole 18, the first long slot hole 15 form first runner；It is above-mentioned
The intercommunicating pore 14 of top connection, the connection periphery of inner tube, the periphery of bridge-type inner tube, lower contact 13 form second flow channel.Above-mentioned connection
The periphery of inner tube include gap between gap, connection inner tube 16 and the packer 11 connected between inner tube 16 and top connection 12,
Connect the gap between inner tube 16 and lower contact 13.The periphery of bridge-type inner tube includes the sky between bridge-type inner tube 18 and lower contact 13
Gap.Generally, first runner is oil recovery runner, and second flow channel is water filling runner.
As shown in Fig. 2, the present invention also provides a kind of single tube water flood recovery tubing strings, comprising:
Bridge-type connector 10, interior to be equipped with first runner and second flow channel, which includes packer；
Flow string 20 is connected with the upper end of the bridge-type connector 10, and is connected with the first runner；
Water injection string 30 is connected with the lower end of the bridge-type connector 20, and is connected with the second flow channel；The water injection string 30
Lower end be equipped with sealing intubation 40.
Above-mentioned bridge-type connector 10 can be using bridge-type connector provided by the invention as shown in Figure 1, specific structure institute as above
It states, details are not described herein.
In bridge-type connector, top connection is connected with flow string 20；Lower contact is then connected with water injection string 30；Bridge-type connector
In first runner be used as oil channel, second flow channel be used as waterflood path.After packer setting in bridge-type connector, it will seal
Upper annulus is formed every device top, forms lower part annular space in packer lower part.At this point, crude oil can enter oil recovery via lower part annular space
Channel, that is, first runner is produced by flow string 20.And well head water filling is injected from upper annulus, through bridge-type connector top connection
Multiple intercommunicating pores enter in water injection string 30, realize the water flooding construction to specific branch.It is being covered as it can be seen that the present invention can be realized
It is adopted in pipe with well marginal not side, and can guarantee enough injection-production column jacket sizes, due to being constructed using single tube, thus well head only needs
Using conventional well head without two-tube well head.
It in one embodiment of the invention, further include casing 50, for the packer setting for the bridge-type connector.The set
Pipe 50 is equipped with the windowing window 51 for connected pipes branch.It in the specific implementation, further include insertion pipe packer 41, intubation envelope
There is an intubation sealing drum every the upper end of device 41, sealing intubation 40 is inserted in intubation sealing drum and forms sealing.The insertion pipe packer 41
Also it sets on casing 50.More specifically, insertion pipe packer 41 is set in the lower section of windowing window 51, usual insertion pipe packer is
Premature setting forms sealing in insertion sealing drum when later period tripping in single tube water flood recovery tubing string under branch's window.
It should be noted that 31/2 " oil pipe even 41/2 " oil can be used in the flow string and water injection string in the present invention
Pipe can be realized and be adopted with well marginal not side in 7 " casing even 51/2 " casings, in operation, using routine work tool rountrip
?.
Bridge-type connector provided by the invention and the single tube water flood recovery tubing string that can be filled the water and be recovered the oil simultaneously for same well,
It mainly for craven fault block reservoirs, is developed, some branch therein can be filled the water, remaining branch using multilateral well
It recovers the oil, to improve recovery ratio, reduces development cost.The present invention realizes that 7 " adopt on the individual well marginal not side of casing using single oil pipe
Technique simplifies with well marginal not side excavating technology, saves Completion cost.
Preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and those skilled in the art do not depart from the scope of the present invention
And essence, there are many variations to implement the present invention.For example, it is shown as part of one embodiment or describes
Feature can be used for another embodiment to obtain another embodiment.The above is only a preferred and feasible embodiment of the present invention, not
Therefore limiting the scope of the invention, it is all with equivalence changes made by description of the invention and accompanying drawing content, it is both contained in
Within interest field of the invention.
Claims (10)
1. a kind of bridge-type connector characterized by comprising
Packer；
Top connection is connected with the first end of the packer；The side wall of the top connection is equipped with multiple intercommunicating pores；
Lower contact is connected with the second end of the packer, and the side wall of the lower contact is equipped with the first long slot hole；
Bridge-type inner tube is fixedly connected on the inside of the lower contact, and the first end of the bridge-type inner tube is equipped with opening, and second end is set
There is bottom, wherein the first end is close to the top connection；The side wall of the bridge-type inner tube is equipped with and first long slot hole pair
The second long slot hole answered and linked together；
Inner tube is connected, first end is fixedly connected in the opening of the bridge-type inner tube, and second end is located at the connection of the top connection
On hole；
The connection inner tube, the bridge-type inner tube, second long slot hole, first long slot hole form first runner；
Peripheral, the described lower contact of peripheral, described bridge-type inner tube of the intercommunicating pore of the top connection, the connection inner tube forms the
Two runners.
2. bridge-type connector according to claim 1, which is characterized in that the second end of the connection inner tube is fixedly connected on described
Top connection.
3. bridge-type connector according to claim 2, which is characterized in that be equipped between the connection inner tube and above-mentioned top connection close
Seal.
4. bridge-type connector according to claim 1, which is characterized in that the packer is Y111 packer or hydrostatic press seal
Every device.
5. a kind of single tube water flood recovery tubing string characterized by comprising
Bridge-type connector, interior to be equipped with first runner and second flow channel, the bridge-type connector includes packer；
Flow string is connected with the upper end of the bridge-type connector, and is connected with the first runner；
Water injection string is connected with the lower end of the bridge-type connector, and is connected with the second flow channel；Under the water injection string
End is equipped with sealing intubation.
6. single tube water flood recovery tubing string according to claim 5, which is characterized in that the bridge-type connector includes:
Packer；
Top connection is connected with the first end of the packer；The side wall of the top connection is equipped with multiple intercommunicating pores；
Lower contact is connected with the second end of the packer, and the side wall of the lower contact is equipped with the first long slot hole；
Bridge-type inner tube is fixedly connected on the inside of the lower contact, and the first end of the bridge-type inner tube is equipped with opening, and second end is set
There is bottom, wherein the first end is close to the top connection；The side wall of the bridge-type inner tube is equipped with and first long slot hole pair
The second long slot hole answered and linked together；
Inner tube is connected, first end is fixedly connected in the opening of the bridge-type inner tube, and second end is located at the connection of the top connection
On hole；
The connection inner tube, the bridge-type inner tube, second long slot hole, first long slot hole form first runner；
Peripheral, the described lower contact of peripheral, described bridge-type inner tube of the intercommunicating pore of the top connection, the connection inner tube forms the
Two runners.
7. single tube water flood recovery tubing string according to claim 6, which is characterized in that the second end of the connection inner tube is fixed to be connected
It connects in the top connection.
8. single tube water flood recovery tubing string according to claim 5, which is characterized in that the intubation is equipped with insertion pipe packer.
9. single tube water flood recovery tubing string according to claim 5, which is characterized in that further include casing, for supplying the bridge-type
The packer setting of connector.
10. single tube water flood recovery tubing string according to claim 9, which is characterized in that described sleeve pipe is equipped with for connecting oil
The windowing window of pipe branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711232033.9A CN109854185B (en) | 2017-11-30 | 2017-11-30 | Bridge type joint and single-pipe water injection and oil production pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711232033.9A CN109854185B (en) | 2017-11-30 | 2017-11-30 | Bridge type joint and single-pipe water injection and oil production pipe column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109854185A true CN109854185A (en) | 2019-06-07 |
| CN109854185B CN109854185B (en) | 2021-05-04 |
Family
ID=66887693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711232033.9A Active CN109854185B (en) | 2017-11-30 | 2017-11-30 | Bridge type joint and single-pipe water injection and oil production pipe column |
Country Status (1)
| Country | Link |
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| CN (1) | CN109854185B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837637A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Self-extracting and self-injecting device in same well |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2931767Y (en) * | 2005-03-25 | 2007-08-08 | 黄立斌 | Production-injection integrated packer |
| CN101187305B (en) * | 2007-01-18 | 2012-04-25 | 中国海洋石油总公司 | Single pipe co-well oil-pumping and water-injecting system |
| CN101353957A (en) * | 2008-03-07 | 2009-01-28 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Same well production-injection method and pipe column |
| CN201241664Y (en) * | 2008-04-29 | 2009-05-20 | 中国海洋石油总公司 | Pipe column for jet pump oil extraction and water injection integrated process |
| CN201474676U (en) * | 2009-07-15 | 2010-05-19 | 中国海洋石油总公司 | Bridge two-channel production joint system |
| CN102926710A (en) * | 2012-10-30 | 2013-02-13 | 陕西高新能源发展有限公司 | Tubing string for oil extraction |
| CN104989342A (en) * | 2015-06-26 | 2015-10-21 | 中国石油天然气股份有限公司 | Integrated horizontal well sectional water injection string |
| CN205936557U (en) * | 2016-08-09 | 2017-02-08 | 中国石油天然气股份有限公司 | Water injection and oil production pipe column |
-
2017
- 2017-11-30 CN CN201711232033.9A patent/CN109854185B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837637A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Self-extracting and self-injecting device in same well |
| CN114837637B (en) * | 2021-02-01 | 2024-04-30 | 中国石油天然气股份有限公司 | Self-production and self-injection device for same well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109854185B (en) | 2021-05-04 |
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