CN202417343U - Rotatable casing shoe - Google Patents
Rotatable casing shoe Download PDFInfo
- Publication number
- CN202417343U CN202417343U CN 201120558020 CN201120558020U CN202417343U CN 202417343 U CN202417343 U CN 202417343U CN 201120558020 CN201120558020 CN 201120558020 CN 201120558020 U CN201120558020 U CN 201120558020U CN 202417343 U CN202417343 U CN 202417343U
- Authority
- CN
- China
- Prior art keywords
- screw rod
- nut
- casing
- casing pipe
- cutting
- 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
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Abstract
The utility model relates to the technical field of deep wells, extradeep wells and well completion drilling, in particular to a rotatable casing shoe. A guiding shoe of the casing shoe is connected with the lower end of a cutting cylinder through a screw thread, and the outer side of the lower end of the cutting cylinder is provided with a cutting alloy block; an outer cylinder is sleeved at the outer side of the upper end of the cutting cylinder, and the inner side of the upper end of the outer cylinder is connected with a screw rod; a buffer screw is arranged between the screw rod and the outer cylinder, and the outer side of the screw rod is provided with a spiral groove; the bottom end of the screw rod is connected with a lower baffle plate, a nut is sleeved on the screw rod; a protrusion at the inner side of the nut is matched with the spiral groove at the outer side of the screw rod, and an upper baffle plate at the upper end of the nut is connected with the inner side of the cutting cylinder; a ratchet wheel is arranged between the nut and the lower baffle plate as well as connected and fixed at the inner side of the cutting cylinder; and the nut is matched with the ratchet wheel and can be used for driving the ratchet wheel to rotate. Due to the rotatable casing shoe, when a casing pipe is put into a well, the casing pipe can be rotated for drifting so as to guarantee that the casing pipe can be smoothly put into the well, and the defect that a traditional casing pipe column cannot be rotated when the casing pipe is encountered with obstructions, and a drilling head of the casing pipe column is pulled out for renewedly drawing and drifting is overcome.
Description
Technical field:
The utility model relates to a kind of deep-well, ultradeep well bores completion technique field, particularly a kind of rotatable casing shoe.
Background technology:
In deep-well, ultradeep well completion setting of casing process, often, hole shrinkage is hampered owing to causing setting of casing.Because of receiving the restriction of well cementation mode and the limitation of the intensity of casing string own, casing string can not rotate, and conventional processing mode only trips out time drill bit reaming, drifting again behind the casing string, and then setting of casing again, has wasted great amount of manpower and material resources.
The utility model content:
The technical problem that the utility model will solve provides a kind of rotatable casing shoe, and this device has been realized rotatable drifting when setting of casing is hampered, and guarantees that casing string is lowered to smoothly.Casing string can not rotate when having overcome existing sleeve pipe and being hampered, and can only trip out under the casing string drill bit deficiency of reaming, drifting again.
The technical scheme that the utility model is taked is: a kind of rotatable casing shoe comprises guide shoe, cutting tube, screw rod and urceolus; Guide shoe is designed with the cutting alloy piece with cutting tube lower end screwed connection, cutting tube lower outside, and the outside, cutting tube upper end is set with urceolus; The urceolus upper end is inboard to be connected with screw rod, between screw rod and the urceolus buffer screw is installed, and the screw rod outside has helicla flute; The screw rod bottom connects lower baffle plate; Nut sleeve is contained on the screw rod, and the inboard convexity of nut matches with the helicla flute in the screw rod outside, and the overhead gage of nut upper end is connected with cutting tube inboard; Ratchet places between nut and the lower baffle plate and through pin and is fastened on cutting tube inboard, and nut and ratchet match to merge and can drive the ratchet rotation.
The beneficial effect of the utility model is: the utility model is contained in nut sleeve on the screw rod owing to having adopted, the mode that nut matches with ratchet, thereby have the function of rotatable drifting when setting of casing is hampered; Guarantee that casing string is lowered to smoothly; Easy to operate, practice thrift cost, reduce construction risk.
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 rotatable casing shoe comprises guide shoe 1, cutting tube 2, screw rod 8 and urceolus 9; Guide shoe 1 is designed with the cutting alloy piece with cutting tube 2 lower end screwed connections, cutting tube 2 lower outside, and the outside, cutting tube 2 upper ends is set with urceolus 9; Urceolus 9 upper ends are inboard to be connected with screw rod 8, between screw rod 8 and the urceolus 9 buffer screw 10 is installed, and screw rod 8 outsides have helicla flute; Screw rod 8 bottoms connect lower baffle plate 3; Nut 6 is sleeved on the screw rod 8, and nut 6 inboard convexities match with the helicla flute in screw rod 8 outsides, and the overhead gage 7 of nut 6 upper ends is connected with cutting tube 2 inboards; Ratchet 5 places between nut 6 and the lower baffle plate 3 and 4 is fastened on cutting tube 2 inboards through pinning, and nut 6 matches to merge with ratchet 5 and can drive ratchet 5 rotations.
When setting of casing is hampered; Only need press down sleeve pipe, screw rod 8 is descending under pressure, and screw rod is exercised nut 6 for 8 times and produced rotation; Nut 6 drives ratchet 5 and 2 rotations of cutting tube; Cutting tube 2 lower outside are designed with the cutting alloy piece, but the well of fast processing blocked portion, thus realize being lowered to smoothly of casing string.
It is understandable 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 rotatable casing shoe comprises guide shoe (1), cutting tube (2), screw rod (8) and urceolus (9); It is characterized in that: guide shoe (1) and (2) the lower end screwed connection of cutting tube; Cutting tube (2) lower outside is designed with the cutting alloy piece, and the outside, cutting tube (2) upper end is set with urceolus (9), and urceolus (9) upper end is inboard to be connected with screw rod (8); Between screw rod (8) and the urceolus (9) buffer screw (10) is installed; Screw rod (8) outside has helicla flute, and screw rod (8) bottom connects lower baffle plate (3), and nut (6) is sleeved on the screw rod (8); The inboard convexity of nut (6) matches with the helicla flute in screw rod (8) outside; The overhead gage (7) of nut (6) upper end is connected with cutting tube (2) inboard, and ratchet (5) places between nut (6) and the lower baffle plate (3) and through pin (4) and is fastened on cutting tube (2) inboard, and nut (6) matches to merge with ratchet (5) and can drive ratchet (5) rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120558020 CN202417343U (en) | 2011-12-28 | 2011-12-28 | Rotatable casing shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120558020 CN202417343U (en) | 2011-12-28 | 2011-12-28 | Rotatable casing shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417343U true CN202417343U (en) | 2012-09-05 |
Family
ID=46742116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120558020 Expired - Fee Related CN202417343U (en) | 2011-12-28 | 2011-12-28 | Rotatable casing shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417343U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897203A (en) * | 2012-09-26 | 2013-01-30 | 苏州先锋物流装备科技有限公司 | Steering mechanism capable of resetting |
| CN104358518A (en) * | 2014-09-12 | 2015-02-18 | 中国石油集团长城钻探工程有限公司 | Guiding tool with drifting function for downwards running casing pipe capable of being fished |
| CN107448156A (en) * | 2017-09-15 | 2017-12-08 | 长江大学 | A kind of full-bore casing guide |
| CN112943118A (en) * | 2021-04-27 | 2021-06-11 | 北京佰文恒新能源服务有限公司 | Multi-stage power system hydraulic driving rotary casing shoe |
| CN114109277A (en) * | 2020-08-31 | 2022-03-01 | 中国石油化工股份有限公司 | Self-adaptive rotary guide shoe |
-
2011
- 2011-12-28 CN CN 201120558020 patent/CN202417343U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897203A (en) * | 2012-09-26 | 2013-01-30 | 苏州先锋物流装备科技有限公司 | Steering mechanism capable of resetting |
| CN102897203B (en) * | 2012-09-26 | 2017-11-17 | 苏州先锋物流装备科技有限公司 | A kind of reducible steering mechanism |
| CN104358518A (en) * | 2014-09-12 | 2015-02-18 | 中国石油集团长城钻探工程有限公司 | Guiding tool with drifting function for downwards running casing pipe capable of being fished |
| CN107448156A (en) * | 2017-09-15 | 2017-12-08 | 长江大学 | A kind of full-bore casing guide |
| CN114109277A (en) * | 2020-08-31 | 2022-03-01 | 中国石油化工股份有限公司 | Self-adaptive rotary guide shoe |
| CN112943118A (en) * | 2021-04-27 | 2021-06-11 | 北京佰文恒新能源服务有限公司 | Multi-stage power system hydraulic driving rotary casing shoe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20121228 |