CN204200201U - New oil well layered fracturing pipe string - Google Patents
New oil well layered fracturing pipe string Download PDFInfo
- Publication number
- CN204200201U CN204200201U CN201420600985.7U CN201420600985U CN204200201U CN 204200201 U CN204200201 U CN 204200201U CN 201420600985 U CN201420600985 U CN 201420600985U CN 204200201 U CN204200201 U CN 204200201U
- Authority
- CN
- China
- Prior art keywords
- sealing drum
- bimetallic tube
- string
- fracturing
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a kind of oil producing operation equipment, particularly relates to a kind of new oil well layered fracturing pipe string.A kind of new oil well layered fracturing pipe string, it has oil pipe, oil pipe is equipped with hydraulic anchor, it is characterized in that, oil pipe lower end is connected with bimetallic tube, is provided with sealing drum I, sealing drum II, sealing drum III from top to bottom, is provided with sliding sleeve I in the bimetallic tube between sealing drum I and sealing drum II outside bimetallic tube, be provided with sliding sleeve II in bimetallic tube between sealing drum II and sealing drum III, the bottom of bimetallic tube is provided with plug.The utility model effectively improves the reliability of construction, avoids the setting of packer and deblocking, prevents tubing string sand card accident, and three layers and above fracturing string are met card rate and be reduced within 5%, and more existing fracturing string success rate improves 3.5 times; There is anti-flushing well function, can anti-flushing well in time after construction sand plug, do not affect other layer and construct, increase work efficiency more than 45%.
Description
Technical field
The utility model relates to a kind of oil producing operation equipment, particularly relates to a kind of new oil well layered fracturing pipe string.
Background technology
Be separated into some sections on conventional oil-water well layered fracturing pipe string employing packer is longitudinal by oil reservoir, every section arranges a fracturing sliding bush.In well, drop into the ball of different size during pressing crack construction from well head from small to large, open sliding sleeve successively from the bottom up, complete separate stratum fracfturing construction from the bottom up.It is many that this tubing string relates to the major diameter instruments such as packer, plays the easy sand card of fracturing string after pressure break blowout prevention, and fracturing string chance card rate is high.According to statistics, three layers and above fracturing string meet card rate at 80-90%.Therefore, the new oil well layered fracturing pipe string being necessary to develop a kind of effective anti-sticking for the production of.
Summary of the invention
The purpose of this utility model is, there is provided a kind of technical scheme of new oil well layered fracturing pipe string for the deficiencies in the prior art, this technical scheme effectively can solve multiple fracturing well fracturing string and meet card phenomenon, improves separate stratum fracfturing effect, reduce accident rate, reduce cost of production.
The technical scheme that the utility model adopts is: a kind of new oil well layered fracturing pipe string, it has oil pipe, oil pipe is equipped with hydraulic anchor, it is characterized in that, oil pipe lower end is connected with bimetallic tube, is provided with sealing drum I, sealing drum II, sealing drum III from top to bottom, is provided with sliding sleeve I in the bimetallic tube between sealing drum I and sealing drum II outside bimetallic tube, be provided with sliding sleeve II in bimetallic tube between sealing drum II and sealing drum III, the bottom of bimetallic tube is provided with plug.
The top of described bimetallic tube is provided with several ball-and-seat.
The beneficial effects of the utility model are: the utility model effectively improves the reliability of construction, avoid the setting of packer and deblocking, prevent tubing string sand card accident, three layers and above fracturing string are met card rate and are reduced within 5%, more existing fracturing string success rate improves 3.5 times, reaches the requirement of low-permeability oil deposit oil-water well multi-layer fracturing; There is anti-flushing well function, can anti-flushing well in time after construction sand plug, do not affect other layer and construct, increase work efficiency more than 45%.
Accompanying drawing explanation
Fig. 1 Novel layered fracturing string schematic diagram;
Wherein, 1-oil pipe; 2-sleeve pipe; 3-hydraulic anchor; 4-sealing drum I; 5-sliding sleeve I; 6-sealing drum II; 7-sliding sleeve II; 8-sealing drum III; 9-bimetallic tube; 10-plug; 11-ball-and-seat.
Detailed description of the invention
Below in conjunction with accompanying drawing, concrete structure of the present utility model and principle are described further.
As shown in the figure, a kind of new oil well layered fracturing pipe string of the present utility model, it has oil pipe 1, oil pipe 1 is equipped with hydraulic anchor 3, it is characterized in that, oil pipe 1 lower end is connected with bimetallic tube 9, sealing drum I 4, sealing drum II 6, sealing drum III 8 is provided with from top to bottom outside bimetallic tube 9, be provided with sliding sleeve I 5 in bimetallic tube 9 between sealing drum I 4 and sealing drum II 6, be provided with sliding sleeve II 7 in the bimetallic tube 9 between sealing drum II 6 and sealing drum III 8, the bottom of bimetallic tube 9 is provided with plug 10; The top of described bimetallic tube 9 is provided with several ball-and-seat 11.
Operating principle of the present utility model: enter design attitude under first being connected by oil pipe 1 by layered fracturing pipe string, after tubing string puts in place, sealing drum I 4 on layered fracturing pipe string, sealing drum II 6, sealing drum III 8 coordinate with the seal section on sleeve pipe 2, are divided into disconnected 3 sections mutually on the cavity between bimetallic tube 9 and sleeve pipe 2 is longitudinal.During pressing crack construction, fracturing fluid injects in oil pipe, and the sand mouth that adds between sealing drum III 8 and plug 10 enters bottom oil layer, completes bottom pressure break.After bottom pressure break terminates, from oil pipe 1 pitching suitable for reading, suppress rear sliding sleeve II 7 and open, the sand mouth that adds between bimetallic tube 9 upper seal bore II 6 and sealing drum III 8 is opened, concurrent fracturing liquid flows into the pathway closure of bottom, injects pressure break pressure can complete intermediate layer pressure break from oil pipe.After intermediate layer pressure break terminates, from oil pipe 1 pitching suitable for reading, suppress rear sliding sleeve I 5 and open, add sand mouth between bimetallic tube 9 upper seal bore I 4 and sealing drum II 6 and open, concurrent fracturing liquid flows into the pathway closure of intermediate layer and bottom, injects pressure break pressure can complete upper strata pressure break from oil pipe.From oil pipe 1 open flow after three laminations split, after open flow, trip out fracturing string in well.Simultaneously, this utility model devises bimetallic tube 9 between hydraulic anchor 3 and plug 10, bimetallic tube 9 is provided with ball-and-seat 11 topmost, be communicated with the chamber between oil pipe 1, sleeve pipe 2, any one deck generation sand plug during construction, can from sleeve pipe 2 anti-flushing well, flushing fluid enters bimetallic tube 9 from oil pipe 1 and sleeve pipe 2 annular space through bimetallic tube 9 ball-and-seat 11 topmost, fracturing string is entered from the bottom of bimetallic tube 9, mortar in tubing string is replaced out, after stopping well-flushing, bimetallic tube 9 single current hole 11 is topmost closed automatically, does not affect other layer of construction.
Claims (2)
1. a new oil well layered fracturing pipe string, it has oil pipe, oil pipe is equipped with hydraulic anchor, it is characterized in that, oil pipe lower end is connected with bimetallic tube, is provided with sealing drum I, sealing drum II, sealing drum III from top to bottom, is provided with sliding sleeve I in the bimetallic tube between sealing drum I and sealing drum II outside bimetallic tube, be provided with sliding sleeve II in bimetallic tube between sealing drum II and sealing drum III, the bottom of bimetallic tube is provided with plug.
2. a kind of new oil well layered fracturing pipe string according to claim 1, it is characterized in that, the top of described bimetallic tube is provided with several ball-and-seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600985.7U CN204200201U (en) | 2014-10-17 | 2014-10-17 | New oil well layered fracturing pipe string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420600985.7U CN204200201U (en) | 2014-10-17 | 2014-10-17 | New oil well layered fracturing pipe string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204200201U true CN204200201U (en) | 2015-03-11 |
Family
ID=52658169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420600985.7U Expired - Fee Related CN204200201U (en) | 2014-10-17 | 2014-10-17 | New oil well layered fracturing pipe string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204200201U (en) |
-
2014
- 2014-10-17 CN CN201420600985.7U patent/CN204200201U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20191017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |