CN2886053Y - Going-into-well resistance absorber for horizontal well casing - Google Patents
Going-into-well resistance absorber for horizontal well casing Download PDFInfo
- Publication number
- CN2886053Y CN2886053Y CN 200620029953 CN200620029953U CN2886053Y CN 2886053 Y CN2886053 Y CN 2886053Y CN 200620029953 CN200620029953 CN 200620029953 CN 200620029953 U CN200620029953 U CN 200620029953U CN 2886053 Y CN2886053 Y CN 2886053Y
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- CN
- China
- Prior art keywords
- plug
- sliding
- sliding plug
- sleeve
- ring
- 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 sleeves mounting decelerator in a horizontal well, which is composed of a sleeve connecting hoop, a shell, a bearing ring, a jaw looper and in turn threaded connected a sliding plug socket sleeve, a connection sleeve, a rubber plug core sleeve and a seal rubber plug under the jaw. A sliding plug ring is fixed on the upper end of the sliding plug socket sleeve via a sliding plug ring pin, a sliding plug is fixed on the lower end of the sliding plug socket sleeve via a sliding plug pin; a sliding plug check ring is fixed on the lower end of the connection sleeve via a sliding plug lever; the seal rubber plug is socketed on the rubber plug core sleeve. The utility model is mounted on the interspace between a sleeve string of a high angle well section or a horizontal well section and a sleeve string of a vertical section, the inside of the sleeve string of the high angle well section or the horizontal well section is fully charged with air, thereby the friction force between the sleeves and the wall of a well can be greatly reduced, and the frictional resistance when mounting the sleeves in a well can be reduced, thereby the wear of the sleeves and the completion cost can be reduced, in addition the completion cycle can be shortened.
Description
Technical field: the utility model relates to a kind of horizontal well casing pipe and goes into the well resistance absorber, belongs to oil drilling casing appliances technical field.
Background technology: at present, domestic in the big gradient of probing exploitation, big displacement and horizontal well process, finish very difficulty of casing job, the easy jam of sleeve pipe not only, and casing wear is also relatively more serious, and sometimes even the more casing replacing of having to, this has not only increased completion time and completion cost, and had a strong impact on the extensive use of big displacement oil gas well, slackened the advantage of such well in the oil drilling exploitation.Solve sleeve pipe and go into the key issue of well difficulty and be how to effectively reduce frictional resistance between the sleeve pipe and the borehole wall, background technology mainly contains: use setting of casing boosting instrument, use the roller centralizer, adopt the casing floating technology.Use the tool operation of setting of casing boosting loaded down with trivial details, instrument costs an arm and a leg, and is unfavorable for extensive popularization; Though use the variable sliding friction of roller centralizer to be rolling friction, because roller easily embeds the stratum, drag-reduction effect is not clearly; At present for realizing that its structure of casing floating technology employed " casing floating box cupling " also has big defective, show mainly between its internals and the body and use pin to be connected that the pin hole of body has reduced whole bunch tube intensity; Cut off for the ease of pin in addition, make that the gap of its core component and internal surface of sleeve pipe is unsuitable excessive, therefore it is bigger to be pushed to the risk that jam takes place in the process of spoiler after tamponade, in case jam just means the well cementation failure, even might cause scrapping of whole mouthful of well.
Summary of the invention: the purpose of this utility model is to avoid in the prior art in order to overcome, sleeve pipe is gone into the deficiency of well drag reduction technology, effectively eliminate the fault of construction of " casing floating box cupling " at present, design a kind of risk that reduces the casing floating technology, reduce between the sleeve pipe and the borehole wall a kind of horizontal well casing pipe of frictional resistance and go into the well resistance absorber.
The utility model is made up of the sliding obturating plug cover that is threaded successively under casing coupling, housing, retainer ring, claw support set and the claw, branch sleeve, plug core retainer plate and sealing plug, sliding plug ring by sliding plug ring dowel fixes in sliding obturating plug set upper side, sliding plug is fixed on the lower end of sliding obturating plug cover by sliding plug pin nail, sliding plug stop ring is by sliding the lower end that the plug lever is fixed on branch sleeve, and the fluid sealant plug sleeve is on the plug core retainer plate.
Invention effect: the utility model is installed between high angle hole section or net horizontal section bunch tube and the vertical section bunch tube, the hollow hole of the sliding obturating plug cover of sliding plug sealing, it can make in high angle hole section or the net horizontal section bunch tube and be full of air, after this part sleeve pipe enters pit shaft, be subjected to the buoyancy of drilling fluid in the pit shaft, just can reduce the frictional force between the sleeve pipe and the borehole wall greatly, making sleeve pipe go into well frictional resistance reduces, reduce casing wear, reduce the completion cost, shorten completion period.
Description of drawings: accompanying drawing 1 is the utility model structural representation.
Among the figure: 1-casing coupling, 2-retainer ring, 3-claw, the sliding plug ring pin of 4-, the sliding obturating plug cover of 5-, 6-branch sleeve, the sliding plug of 7-lever, 8-seals plug, 9-claw support set, the sliding plug ring of 10-, the sliding plug of 11-, the 12-housing, 13-sliding plug stop ring, 14-plug gland, 15-plug core retainer plate, the sliding plug pin nail of 16-.
The specific embodiment: as can be known by accompanying drawing 1, the utility model is made up of sliding obturating plug cover 5, branch sleeve 6, plug core retainer plate 15 and sealing plug 8 that casing coupling 1, housing 12, retainer ring 2, claw support set 9, claw 3 and claw are threaded for 3 times successively, sliding plug ring 10 is fixed on sliding obturating plug by sliding plug ring pin 4 and overlaps 5 upper ends, sliding plug 11 is fixed on the lower end of sliding obturating plug cover 5 by sliding plug pin nail 16, sliding plug stop ring 13 is by sliding the lower end that plug lever 7 is fixed on branch sleeve 6, and sealing plug 8 is enclosed within on the plug core retainer plate 15.
In the cementing operation process, turn on pump before the well cementation, under pressure, cut off sliding plug pin nail 16, sliding plug 11 moves in the branch sleeve 6 and is slided plug lever 7 and shelves that sliding plug stop ring 13 hinders, make the conducting of upper/lower terminal bunch tube form path, circulation and cementing operation before can cementing the well this moment; After the cementing operation is finished, open cementing concrete first speed pin, cementing plug is pressed in the casing string, cementing plug is obstructed when moving to claw bearing sleeve 9 upper ends by well head, rising pressure, promoting claw support set 9 moves downward, cut off sliding plug ring pin 4 successively, sliding plug pin nail, build the pressure and cut off sliding plug ring pin 4, sliding plug ring 10 moves down into sliding obturating plug with claw support set 9 and overlaps 5 bottoms, and this moment, claw 3 was because of losing the radially bracketing of claw support set 9, inside radial contraction under axial compression, finally leave retainer ring 2, the parts in the housing 12 are finished well cementing operation by the block ring place bruising that cementing plug is passed the bunch tube bottom under for slurry pressure.
Claims (1)
1, a kind of horizontal well casing pipe is gone into the well resistance absorber, form by the sliding obturating plug cover (5) that is threaded successively under casing coupling (1), housing (12), retainer ring (2), claw support set (9), claw (3) and the claw (3), branch sleeve (6), plug core retainer plate (15) and sealing plug (8), it is characterized in that sliding plug ring (10) is fixed on sliding obturating plug cover (5) upper end by sliding plug ring pin (4), sliding plug (11) is followed closely the lower end that (16) are fixed on sliding obturating plug cover (5) by sliding plug pin, and sliding plug stop ring (13) is fixed on the lower end of branch sleeve (6) by sliding plug lever (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620029953 CN2886053Y (en) | 2006-01-24 | 2006-01-24 | Going-into-well resistance absorber for horizontal well casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620029953 CN2886053Y (en) | 2006-01-24 | 2006-01-24 | Going-into-well resistance absorber for horizontal well casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886053Y true CN2886053Y (en) | 2007-04-04 |
Family
ID=37961143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620029953 Expired - Fee Related CN2886053Y (en) | 2006-01-24 | 2006-01-24 | Going-into-well resistance absorber for horizontal well casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886053Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005708A (en) * | 2013-02-26 | 2014-08-27 | 中国石油化工股份有限公司 | Casing drag-reduction device |
| CN105697848A (en) * | 2016-03-21 | 2016-06-22 | 福州品行科技发展有限公司 | Infrared induction faucet with filter element easily replaced |
| CN107401377A (en) * | 2017-09-11 | 2017-11-28 | 长江大学 | A kind of deep drilling anti-friction damping device |
| CN109611061A (en) * | 2018-11-29 | 2019-04-12 | 中国海洋石油集团有限公司 | A method of floating tripping in screen casing |
| CN109611060A (en) * | 2018-11-26 | 2019-04-12 | 中国海洋石油集团有限公司 | A kind of floating screen casing |
| CN109681120A (en) * | 2018-12-21 | 2019-04-26 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of ultra-long horizontal section casing continues tripping in method |
-
2006
- 2006-01-24 CN CN 200620029953 patent/CN2886053Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005708A (en) * | 2013-02-26 | 2014-08-27 | 中国石油化工股份有限公司 | Casing drag-reduction device |
| CN104005708B (en) * | 2013-02-26 | 2016-06-29 | 中国石油化工股份有限公司 | Sleeve pipe resistance absorber |
| CN105697848A (en) * | 2016-03-21 | 2016-06-22 | 福州品行科技发展有限公司 | Infrared induction faucet with filter element easily replaced |
| CN107401377A (en) * | 2017-09-11 | 2017-11-28 | 长江大学 | A kind of deep drilling anti-friction damping device |
| CN109611060A (en) * | 2018-11-26 | 2019-04-12 | 中国海洋石油集团有限公司 | A kind of floating screen casing |
| CN109611061A (en) * | 2018-11-29 | 2019-04-12 | 中国海洋石油集团有限公司 | A method of floating tripping in screen casing |
| CN109681120A (en) * | 2018-12-21 | 2019-04-26 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of ultra-long horizontal section casing continues tripping in method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |