CN102392615A - Oil pipe tie-back insertion sealing device - Google Patents
Oil pipe tie-back insertion sealing device Download PDFInfo
- Publication number
- CN102392615A CN102392615A CN2011103864261A CN201110386426A CN102392615A CN 102392615 A CN102392615 A CN 102392615A CN 2011103864261 A CN2011103864261 A CN 2011103864261A CN 201110386426 A CN201110386426 A CN 201110386426A CN 102392615 A CN102392615 A CN 102392615A
- Authority
- CN
- China
- Prior art keywords
- sealing
- tieback
- central tube
- packing
- dynamic seal
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 36
- 238000003780 insertion Methods 0.000 title abstract description 5
- 230000037431 insertion Effects 0.000 title abstract description 5
- 238000012856 packing Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Abstract
The invention relates to the technical field of staged fracturing of open hole well completion of a horizontal well, in particular to an oil pipe tie-back insertion sealing device. The device comprises a central tube and a tieback seal cartridge; the outer sleeve of the central tube is provided with a dynamic sealing mechanism, the lower end of the central tube is connected with an introduction coupling, and the dynamic sealing mechanism is in contact with the inner wall of the tie-back sealing cylinder and can be dynamically sealed. The invention realizes the gap expansion of the outer diameter of the insertion pipe and the inner diameter of the tieback cylinder, reduces the operation construction difficulty, improves the sealing pressure difference index and meets the implementation requirement of the horizontal well fracturing process. The defects that the size of the outer diameter of an insert pipe of the existing sealing device is close to the size of the inner diameter of a sealing cylinder, the operation and construction difficulty is high, and the sealing pressure difference is small are overcome.
Description
Technical field:
The present invention relates to a kind of horizontal well barefoot completion staged fracturing technical field, particularly a kind of oil pipe tieback inserts sealing device.
Background technology:
Existing oil pipe tieback inserts sealing device and realizes that the mode of sealing is through sealing ring and gathers the ptfe ring combination; Insert micro-deformation through interference fit and form sealing; The external diameter of this structure insertion tube and sealing drum internal diameter size are approaching, and the job execution difficulty is big, and the reliability of sealing is difficult to guarantee; Withstand voltage difference under the best conditions has only about 30MPa, and the situation that sealing load is had relatively high expectations can't satisfy.
Summary of the invention:
The technical problem that the present invention will solve provides a kind of oil pipe tieback and inserts sealing device, and this device has been realized the gap enlargement of cannula outer diameter and tieback tube internal diameter, reduces the job execution difficulty, improves the seal pressure differential index, satisfies the requirement of fractured horizontal well process implementing.It is approaching to have overcome existing sealing device insertion tube external diameter and sealing drum internal diameter size, and the job execution difficulty is big, the deficiency that seal pressure differential is little.
The technical scheme that the present invention taked is: a kind of oil pipe tieback inserts sealing device, comprises central tube and tieback sealing drum; Central tube is set with dynamic seal (packing) mechanism outward, and the central tube lower end connects introduces box cupling, and dynamic seal (packing) mechanism contacts with tieback sealing drum inwall and can dynamic seal (packing).
Dynamic seal (packing) mechanism is made up of O-ring seals, dynamic seal (packing) coil structures groove and limit body.
The invention has the beneficial effects as follows: the present invention is owing to adopted dynamic seal (packing) mechanism; Thereby have the effect of the gap enlargement of cannula outer diameter and tieback tube internal diameter, and reduce the job execution difficulty, improve the seal pressure differential index; Stable and reliable for performance, satisfy the requirement of fractured horizontal well process implementing.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation.
Accompanying drawing is a structural representation of the present invention.
The specific embodiment:
Shown in accompanying drawing, a kind of oil pipe tieback inserts sealing device, comprises central tube 1 and tieback sealing drum 3; The central tube 1 outer dynamic seal (packing) mechanism 2 that is set with, central tube 1 lower end connects introduces box cupling 4, and dynamic seal (packing) mechanism 2 contacts with tieback sealing drum 3 inwalls and can dynamic seal (packing).Dynamic seal (packing) mechanism 2 is made up of O-ring seals, dynamic seal (packing) coil structures groove and limit body.
Use when of the present invention, tieback sealing drum 3 and tube connector are lowered into design attitude with completion suspension tubing string, central tube 1 is lowered to tieback string.Introduce box cupling 4 and get into tieback sealing drums 3 and makes central tube 1 and dynamic seal (packing) mechanism 2 placed in the middle, can scratching when inserting tieback sealing drum 3, dynamic seal (packing) mechanism 2 seals through contacting with tieback sealing drum 3 inwalls; When on carry back the intubate post or when repeating to insert, because the effect of dynamic seal (packing) mechanism 2, sealing ring can not come off and damage.
It is understandable that; More than about specific descriptions of the present invention; Only be used to the present invention is described and be not to be subject to the described technical scheme of the embodiment of the invention; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention, to reach identical technique effect; As long as satisfy the use needs, all within protection scope of the present invention.
Claims (2)
1. an oil pipe tieback inserts sealing device, comprises central tube (1) and tieback sealing drum (3); It is characterized in that: the outer dynamic seal (packing) mechanism (2) that is set with of central tube (1), central tube (1) lower end connects introduces box cupling (4), and dynamic seal (packing) mechanism (2) contacts with tieback sealing drum (3) inwall and can dynamic seal (packing).
2. insert sealing device according to the described oil pipe tieback of claim 1, it is characterized in that: said dynamic seal (packing) mechanism (2) is made up of O-ring seals, dynamic seal (packing) coil structures groove and limit body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103864261A CN102392615A (en) | 2011-11-29 | 2011-11-29 | Oil pipe tie-back insertion sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103864261A CN102392615A (en) | 2011-11-29 | 2011-11-29 | Oil pipe tie-back insertion sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102392615A true CN102392615A (en) | 2012-03-28 |
Family
ID=45859985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103864261A Pending CN102392615A (en) | 2011-11-29 | 2011-11-29 | Oil pipe tie-back insertion sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102392615A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015911A (en) * | 2012-11-29 | 2013-04-03 | 中国石油集团长城钻探工程有限公司 | Articulated oil tube tie-back sealing device |
| CN104912512A (en) * | 2015-06-29 | 2015-09-16 | 中国海洋石油总公司 | Packing device for inserting pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4779681A (en) * | 1987-06-16 | 1988-10-25 | Michael York | Packer for oil or gas well with lateral passage therethrough and method of fracturing well |
| CN201246115Y (en) * | 2008-06-30 | 2009-05-27 | 西部钻探克拉玛依钻井工艺研究院 | Seal plug-in joint |
| CN101666215A (en) * | 2009-09-30 | 2010-03-10 | 安东石油技术（集团）有限公司 | Sleeve pipe tieback device |
-
2011
- 2011-11-29 CN CN2011103864261A patent/CN102392615A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4779681A (en) * | 1987-06-16 | 1988-10-25 | Michael York | Packer for oil or gas well with lateral passage therethrough and method of fracturing well |
| CN201246115Y (en) * | 2008-06-30 | 2009-05-27 | 西部钻探克拉玛依钻井工艺研究院 | Seal plug-in joint |
| CN101666215A (en) * | 2009-09-30 | 2010-03-10 | 安东石油技术（集团）有限公司 | Sleeve pipe tieback device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015911A (en) * | 2012-11-29 | 2013-04-03 | 中国石油集团长城钻探工程有限公司 | Articulated oil tube tie-back sealing device |
| CN104912512A (en) * | 2015-06-29 | 2015-09-16 | 中国海洋石油总公司 | Packing device for inserting pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202380985U (en) | Tubular air seal thread joint | |
| CN102392618B (en) | Pressure difference opening self-locking sliding sleeve | |
| CN203531777U (en) | High-quality airtight seal oil casing threaded joint | |
| CN102392615A (en) | Oil pipe tie-back insertion sealing device | |
| CN202338317U (en) | Tie-back inserting and sealing device for fracturing | |
| CN104405297B (en) | There is the segmented oil drill rocker sealing structure | |
| CN202100220U (en) | Oil pipe and casing hanger with controllable sealing performance | |
| CN105909206A (en) | Closed compressed rubber sleeve sealing unit | |
| CN204113206U (en) | A kind of Self-expandable packer with compression protection mechanism | |
| CN205805497U (en) | Enclosed compression packing element sealing unit | |
| CN202165041U (en) | Plug-in sealing device | |
| CN202531080U (en) | Wellhead sealing hanger | |
| CN201705230U (en) | Special threading connector for sleeve with small external diameter | |
| CN203822217U (en) | Internal circulating hole concealed type reverse circulation valve | |
| CN203594402U (en) | Oil tube plugging device | |
| CN204252845U (en) | Be convenient to the segmented oil drill rocker of leakproof | |
| CN210033313U (en) | Sealing ring and oil pumping pipe inserting pipe system | |
| CN203308452U (en) | Pulser pressure compensating device | |
| CN201090144Y (en) | Inclined plane jack-in type closing joint connecting inner tube | |
| CN208777913U (en) | A kind of oil pipe threaded connector of multi-sealed hook-type screw thread | |
| CN102996079A (en) | Tubular air sealing screwed joint and application thereof | |
| CN201802348U (en) | Removable internal oil tube stopper | |
| CN204252918U (en) | A kind of wellhead for production | |
| CN203547616U (en) | Expanding tail pipe hanger | |
| CN207879298U (en) | Double float type inflatable packers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120328 |