CN204877415U - Horizontal well staged fracturing tubular column - Google Patents
Horizontal well staged fracturing tubular column Download PDFInfo
- Publication number
- CN204877415U CN204877415U CN201520539021.0U CN201520539021U CN204877415U CN 204877415 U CN204877415 U CN 204877415U CN 201520539021 U CN201520539021 U CN 201520539021U CN 204877415 U CN204877415 U CN 204877415U
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- China
- Prior art keywords
- packer
- open hole
- tubular column
- horizontal well
- hole packer
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Abstract
The utility model relates to a horizontal well staged fracturing tubular column, overlap intraductal oil gas pipe including the sleeve pipe with setting up, oil gas pipe front end is provided with and hangs the packer, hang the packer rear end and return the valve and be connected, return valve, safety joint, water conservancy anchor, an open hole packer, throttle sand jet, the 2nd open hole packer connects gradually through the oil gas pipe with the bridging plug and is in the same place. The utility model discloses a horizontal well staged fracturing tubular column can guarantee the tubular column and go into the security of process under, and guarantee oil is tracheal unobstructed, prevents that the packer from easily being risen out by sand card, construction back tubular column.
Description
Technical field
The utility model relates to a kind of horizontal well staged fracturing tubular column, belongs to staged fracturing of horizontal well technical field.
Background technology
Begin one's study the eighties in 20th century fracturing yield increasing renovation technique of horizontal well both at home and abroad, in crack initiation, the extension of hydraulic fracture, production forecast after horizontal well pressure, the optimization of hydraulic fracture number and Fracture geometric size, the aspects such as staged fracturing construction technology technology and down-hole separation instrument achieve certain progress.
In recent years, domestic petroleum field, for horizontal well characteristic, devises staged fracturing operating tool string, these tubing strings or be carry out pressure break piecemeal, or carries out general pressure break.Disclosed " the horizontal well staged fracturing tubular column " (publication number: CN201396131 of such as Chinese patent literature, publication date: 2010.02.03), it is made up of tubing string, pressure difference packer, safety joint, slide sleeve packer, pressure difference packer and slide sleeve packer are arranged on tubing string, are also provided with safety joint between the two.With in oil reservoirs of horizontal well segmentation modification measures, real
Existing horizontal well adopts packer staged fracturing, thus significantly improves construction general effect.But it is only applicable to oil field, solve the problem of net horizontal section packer sand card, this structure is with the mandatory section construction of fracturing packer, after pressure break completes an interval, upper lifting pipe post, carries out the pressing crack construction of next interval, causes the complete rear packer of pressure break to be difficult to deblocking like this; Because upper lifting pipe post packer sustains damage, poorly sealed, cause pressure break to lose efficacy; After pressure break completes, strata pressure is higher, easily causes blowout, lead to a disaster during upper lifting pipe post; Operability is poor, and technique is loaded down with trivial details, carries tubing string at every turn and needs dismounting well head and pressure break pipeline, and program is complicated, and labor intensity of operating staff is large, poor stability.
Flourish along with industrial gas oil technology, now be badly in need of research and development a kind of specially for the fracturing strings of petroleum gas horizontal well, can ensure tubing string under enter the safety of process and the unobstructed of internal channel, the sands-proof check problem of packer, construction after tubing string easily trip out.
Utility model content
The technical problems to be solved in the utility model is: in order to overcome the deficiencies in the prior art, and the utility model provides a kind of horizontal well staged fracturing tubular column.
The utility model solves the technical scheme that its technical problem adopts: a kind of horizontal well staged fracturing tubular column, comprise sleeve pipe and be arranged on the Oil/Gas Pipe in sleeve pipe, described Oil/Gas Pipe front end is provided with hanging packer, described hanging packer rear end with return valve and be connected, describedly return valve, safety joint, hydraulic anchor, first open hole packer, throttling sandblaster, second open hole packer and bridging plug are connected in turn by Oil/Gas Pipe, described hanging packer, first open hole packer and the second open hole packer are provided with filter, described filter is provided with double-layer filtering net, described filter top is provided with clip, filter is by clip and hanging packer, first open hole packer is connected with the second open hole packer.
Further, the side face of described first open hole packer and the second open hole packer seals with internal surface of sleeve pipe and contacts, and described hydraulic anchor contacts with internal surface of sleeve pipe with the side face of bridging plug, is fixed on sleeve pipe by Oil/Gas Pipe.
Further, the order number of described double-layer filtering net is 35-100 order.
Further, return described on valve and be provided with unidirectional stop valve.
Further, described throttling sandblaster nozzle adopts reversed cone nozzle.
Further, the side face of described first open hole packer and the second open hole packer and internal surface of sleeve pipe sealing contact surface are provided with Double seal ring.
The beneficial effects of the utility model are, a kind of horizontal well staged fracturing tubular column of the present utility model, can ensure tubing string under enter the safety of process, ensure the unobstructed of Oil/Gas Pipe, prevent packer by sand card, after construction, tubing string easily trips out.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is sectional drawing of the present utility model,
Fig. 2 is the structural representation of the utility model filter.
In figure: 1, sleeve pipe, 2, Oil/Gas Pipe, 3, hanging packer, 4, return valve, 5, safety joint, 6, hydraulic anchor, the 7, first open hole packer, 8, throttling sandblaster, the 9, second open hole packer, 10, bridging plug, 11, filter, 12, clip.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As depicted in figs. 1 and 2, a kind of horizontal well staged fracturing tubular column of the present utility model, a kind of horizontal well staged fracturing tubular column, the Oil/Gas Pipe 2 comprising sleeve pipe 1 and be arranged in sleeve pipe 1, it is characterized in that: described Oil/Gas Pipe 2 front end is provided with hanging packer 3, described hanging packer 3 rear end with return valve 4 and be connected, describedly return valve 4, safety joint 5, hydraulic anchor 6, first open hole packer 7, throttling sandblaster 8, second open hole packer 9 and bridging plug 10 are connected in turn by Oil/Gas Pipe 2, described hanging packer 3, first open hole packer 7 and the second open hole packer 9 are provided with filter 11, described filter 11 is provided with double-layer filtering net, described filter 11 top is provided with buckle 12, filter 11 is by buckle 12 and hanging packer 3, first open hole packer 7 is connected with the second open hole packer 9.
As the further improvement of technique scheme, described first open hole packer 7 contacts with sleeve pipe 1 inner wall sealing with the side face of the second open hole packer 9, and the side face of described hydraulic anchor 6 and bridging plug 10 and sleeve pipe 1 contact internal walls, be fixed on Oil/Gas Pipe 2 on sleeve pipe 1.
As the further improvement of technique scheme, the order number of described double-layer filtering net is 35-100 order.
As the further improvement of technique scheme, described in return on valve 4 and be provided with unidirectional stop valve.
As the further improvement of technique scheme, described throttling sandblaster 8 nozzle adopts reversed cone nozzle.
As the further improvement of technique scheme, the side face of described first open hole packer 7 and the second open hole packer 9 and sleeve pipe 1 inner wall sealing contact surface are provided with Double seal ring.
Horizontal well staged fracturing tubular column of the present utility model, can ensure tubing string under enter the safety of process and the unobstructed of internal channel, the sands-proof check problem of packer, construction after tubing string easily trip out.Horizontal well staged fracturing tubular column to contact with the borehole wall produce larger normal direction support reaction and frictional resistance because Action of Gravity Field can cause tubing string to be partial to the low limit of horizontal well between the borehole wall, likely cause tubing string self-locking and packer midway the situation such as to set, cause tubing string cannot servant.Sleeve pipe 1 and the borehole wall can be stoped to produce very large frictional force, to ensure that packer can not set halfway.First enter design attitude by under tubing string, hydraulic anchor anchor fluke opens anchoring string, carries out pressure break to bottom interval.After pressure break completes, by returning valve 4 control oil pipe gate open flow, after open flow terminates, upper lifting pipe post is to next section of pressure break position, and build the pressure set packer again, completes the pressure break to next section.Repeat said process, complete the pressure break step by step to multiple horizontal segment.Bleed off pressure deblocking packer after end, packing element and hydraulic anchor anchor fluke are regained, above mentions tubing string, complete construction.Structure is simple, easy construction, and after construction, tubing string easily trips out, and can realize staged fracturing targetedly; After having constructed, fast liquid in well can be returned to drain into ground and throw people and produce.
Described hanging packer 3, first open hole packer 7 and the second open hole packer 9 are provided with filter 11, prevent proppant to enter the packing element of packer, prevent packer by sand card.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on manual, must determine its technical scope according to right.
Claims (6)
1. a horizontal well staged fracturing tubular column, comprise sleeve pipe (1) and be arranged on the Oil/Gas Pipe (2) in sleeve pipe (1), it is characterized in that: described Oil/Gas Pipe (2) front end is provided with hanging packer (3), described hanging packer (3) rear end with return valve (4) and be connected, describedly return valve (4), safety joint (5), hydraulic anchor (6), first open hole packer (7), throttling sandblaster (8), second open hole packer (9) and bridging plug (10) are connected in turn by Oil/Gas Pipe (2), described hanging packer (3), first open hole packer (7) and the second open hole packer (9) are provided with filter (11), (11) are provided with double-layer filtering net with described filter, described filter (11) top is provided with clip (12), filter (11) is by clip (12) and hanging packer (3), first open hole packer (7) is connected with the second open hole packer (9).
2. horizontal well staged fracturing tubular column as claimed in claim 1, it is characterized in that: described first open hole packer (7) contacts with sleeve pipe (1) inner wall sealing with the side face of the second open hole packer (9), the side face of described hydraulic anchor (6) and bridging plug (10) and sleeve pipe (1) contact internal walls, be fixed on Oil/Gas Pipe (2) on sleeve pipe (1).
3. horizontal well staged fracturing tubular column as claimed in claim 1, is characterized in that: the order number of described double-layer filtering net is 35-100 order.
4. horizontal well staged fracturing tubular column as claimed in claim 1, is characterized in that: described in return on valve (4) and be provided with unidirectional stop valve.
5. horizontal well staged fracturing tubular column as claimed in claim 1, is characterized in that: described throttling sandblaster (8) nozzle adopts reversed cone nozzle.
6. horizontal well staged fracturing tubular column as claimed in claim 1, is characterized in that: the side face of described first open hole packer (7) and the second open hole packer (9) and sleeve pipe (1) inner wall sealing contact surface are provided with Double seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520539021.0U CN204877415U (en) | 2015-07-24 | 2015-07-24 | Horizontal well staged fracturing tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520539021.0U CN204877415U (en) | 2015-07-24 | 2015-07-24 | Horizontal well staged fracturing tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204877415U true CN204877415U (en) | 2015-12-16 |
Family
ID=54821798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520539021.0U Expired - Fee Related CN204877415U (en) | 2015-07-24 | 2015-07-24 | Horizontal well staged fracturing tubular column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204877415U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525902A (en) * | 2016-01-21 | 2016-04-27 | 中国石油化工股份有限公司 | Horizontal well up-going fracturing method for screen pipe suspension well completion |
| CN109162687A (en) * | 2018-10-12 | 2019-01-08 | 中国石油大学(北京) | The multistage reciprocating fracturing process of horizontal well multistage and device |
-
2015
- 2015-07-24 CN CN201520539021.0U patent/CN204877415U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525902A (en) * | 2016-01-21 | 2016-04-27 | 中国石油化工股份有限公司 | Horizontal well up-going fracturing method for screen pipe suspension well completion |
| CN105525902B (en) * | 2016-01-21 | 2019-01-22 | 中国石油化工股份有限公司 | Fracturing process is returned on a kind of complete well water horizontal well of suspension screen casing |
| CN109162687A (en) * | 2018-10-12 | 2019-01-08 | 中国石油大学(北京) | The multistage reciprocating fracturing process of horizontal well multistage and device |
| CN109162687B (en) * | 2018-10-12 | 2019-12-27 | 中国石油大学(北京) | Multi-section and multi-stage reciprocating fracturing method and device for horizontal well |
| US11085280B2 (en) | 2018-10-12 | 2021-08-10 | China University Of Petroleum-Beijing | Horizontal well multi-section multi-stage reciprocating fracturing method and apparatus |
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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: 20151216 Termination date: 20160724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |