CN202266201U - Sleeve floating coupler - Google Patents
Sleeve floating coupler Download PDFInfo
- Publication number
- CN202266201U CN202266201U CN 201120358366 CN201120358366U CN202266201U CN 202266201 U CN202266201 U CN 202266201U CN 201120358366 CN201120358366 CN 201120358366 CN 201120358366 U CN201120358366 U CN 201120358366U CN 202266201 U CN202266201 U CN 202266201U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- sleeve
- upper sliding
- casing
- settled
- 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
Links
- 238000007667 floating Methods 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 12
- 230000007547 defect Effects 0.000 abstract 1
- 229910003460 diamond Inorganic materials 0.000 abstract 1
- 239000010432 diamond Substances 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Images
Abstract
The utility model relates to an oil field extended reach well and horizontal well completion matched tool and particularly relates to a sleeve floating coupler which consists of an outer sleeve, an upper sliding sleeve, a lower sliding sleeve, shear pins and seal rings, wherein the two ends of the outer sleeve are provided with threads; the upper sliding sleeve and the lower sliding sleeve are respectively connected with the outer sleeve through the shear pins; the upper sliding sleeve and the lower sliding sleeve can be drilled by a PDC (polycrystalline diamond compact) drill bit; the outer sleeve and the upper sliding sleeve are sealed by one seal ring; the lower end of the upper sliding sleeve and the lower sliding sleeve are sealed by one seal ring; and the bottom of the upper sliding sleeve is provided with a circulating hole. The sleeve floating coupler can be used for reducing the settling frictional resistance of a casing, ensuring that the casing can be smoothly settled to a predetermined depth, and overcoming the defects in the prior art that the frictional resistance is large and the casing has less possibility of being settled to the predetermined depth when the casing is settled in angle maintaining sections with larger hole angles of extended reach wells and horizontal wells.
Description
Technical field:
The utility model relates to a kind of oil field extended reach well, horizontal well completion kit, particularly a kind of casing floating box cupling.
Background technology:
At present, at the bigger steady tilted section of the hole angle of extended reach well, horizontal well, be lowered in the process at normal sleeve pipe, along with the increase of horizontal movement, frictional resistance is increasing, and conventional method is lowered to the sleeve pipe difficulty, even is difficult to down to desired depth.
The utility model content:
The technical problem that the utility model will solve provides a kind of casing floating box cupling, and this box cupling has been realized reducing sleeve pipe and has been lowered to frictional resistance, guarantees that sleeve pipe is lowered into desired depth smoothly.Overcome prior art in the bigger steady tilted section of the hole angle of extended reach well, horizontal well, under the sleeve pipe fashionable frictional resistance big, be difficult to down deficiency to desired depth.
The technical scheme that the utility model is taked is: a kind of casing floating box cupling, form by overcoat, upper sliding sleeve, low sleeve, shear pin and sealing ring; The overcoat two ends are processed with screw thread; Upper sliding sleeve, low sleeve are connected with overcoat through shear pin respectively; Upper sliding sleeve and low sleeve are PDC drill bit drillable, all adopt the sealing ring sealing between overcoat and upper sliding sleeve, upper sliding sleeve lower end and the low sleeve, and the bottom of upper sliding sleeve has circulation port.
The beneficial effect of the utility model is: the utility model is owing to all adopt the structure of sealing ring sealing between overcoat and upper sliding sleeve, upper sliding sleeve lower end and the low sleeve; Thereby has a up and down effect of fluid of isolation tools; Make casing string be in floating state; To reduce the frictional resistance of sleeve pipe, guarantee that sleeve pipe is lowered into desired depth smoothly.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Accompanying drawing is the structural representation of the utility model.
The specific embodiment:
Shown in accompanying drawing, a kind of casing floating box cupling is made up of overcoat 1, upper sliding sleeve 2, low sleeve 3, shear pin 4 and sealing ring 5; Overcoat 1 processes at one time, and the centre does not have screwed connection, and overcoat 1 two ends are processed with screw thread, and two ends all are connected with casing string during work, have ensured the intensity of instrument; Upper sliding sleeve 2, low sleeve 3 are connected with overcoat 1 through shear pin 4 respectively, and play fixation; Upper sliding sleeve 2 is PDC drill bit drillable with low sleeve 3, all adopts sealing ring 5 sealings between overcoat 1 and upper sliding sleeve 2, upper sliding sleeve 2 lower ends and the low sleeve 3, and the bottom of upper sliding sleeve 2 has circulation port, and the back circulation is used for putting in place under the sleeve pipe.
When carrying out casing job, begin not drilling fluid charge, behind certain depth, when hook load eases down to 50KN, begin to install the utility model down, and, proceed casing job, the following drilling fluid charge in limit with the sealing of sleeve pipe screw thread glue.When under the sleeve pipe behind the precalculated position, turn on pump, suppress, cut off the shear pin 4 on top, upper sliding sleeve 2 moves down, and exposes circulation port and circulates.When carrying out well cementing operation, pump pressure rises to certain value, cuts off the shear pin 4 of bottom, and low sleeve 3 moves down.Accomplish well cementing operation.When spudding in once more, because upper sliding sleeve 2 is PDC drill bit drillable with low sleeve 3, can not occur skidding and the situation that is hampered when boring plug, improved drilling efficiency greatly.
Be with being appreciated that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.
Claims (1)
1. a casing floating box cupling is made up of overcoat (1), upper sliding sleeve (2), low sleeve (3), shear pin (4) and sealing ring (5); It is characterized in that: overcoat (1) two ends are processed with screw thread; Upper sliding sleeve (2), low sleeve (3) are connected with overcoat (1) through shear pin (4) respectively; Upper sliding sleeve (2) and low sleeve (3) are PDC drill bit drillable; All adopt sealing ring (5) sealing between overcoat (1) and upper sliding sleeve (2), upper sliding sleeve (2) lower end and the low sleeve (3), the bottom of upper sliding sleeve (2) has circulation port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358366 CN202266201U (en) | 2011-08-28 | 2011-08-28 | Sleeve floating coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358366 CN202266201U (en) | 2011-08-28 | 2011-08-28 | Sleeve floating coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266201U true CN202266201U (en) | 2012-06-06 |
Family
ID=46156999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120358366 Expired - Fee Related CN202266201U (en) | 2011-08-28 | 2011-08-28 | Sleeve floating coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266201U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822268A (en) * | 2016-05-27 | 2016-08-03 | 成都北方石油勘探开发技术有限公司 | Horizontal well completion pipe string for middle-shallow reservoir |
| CN105840135A (en) * | 2016-05-27 | 2016-08-10 | 成都北方石油勘探开发技术有限公司 | Production tubing |
| CN106677719A (en) * | 2015-11-09 | 2017-05-17 | 中石化石油工程技术服务有限公司 | Well cementing method, well cementing assembly and collapse type sleeve floating coupling thereof |
| CN109209301A (en) * | 2018-11-12 | 2019-01-15 | 中国海洋石油集团有限公司 | A kind of extended horizontal well floating screen assembly |
-
2011
- 2011-08-28 CN CN 201120358366 patent/CN202266201U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677719A (en) * | 2015-11-09 | 2017-05-17 | 中石化石油工程技术服务有限公司 | Well cementing method, well cementing assembly and collapse type sleeve floating coupling thereof |
| CN106677719B (en) * | 2015-11-09 | 2019-07-16 | 中石化石油工程技术服务有限公司 | A kind of cementing method, well cementation component and its collapse type casing float collar |
| CN105822268A (en) * | 2016-05-27 | 2016-08-03 | 成都北方石油勘探开发技术有限公司 | Horizontal well completion pipe string for middle-shallow reservoir |
| CN105840135A (en) * | 2016-05-27 | 2016-08-10 | 成都北方石油勘探开发技术有限公司 | Production tubing |
| CN109209301A (en) * | 2018-11-12 | 2019-01-15 | 中国海洋石油集团有限公司 | A kind of extended horizontal well floating screen assembly |
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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: 20120606 Termination date: 20140828 |
|
| EXPY | Termination of patent right or utility model |