CN202266221U - Salvageable bottom plug combination - Google Patents
Salvageable bottom plug combination Download PDFInfo
- Publication number
- CN202266221U CN202266221U CN 201120358368 CN201120358368U CN202266221U CN 202266221 U CN202266221 U CN 202266221U CN 201120358368 CN201120358368 CN 201120358368 CN 201120358368 U CN201120358368 U CN 201120358368U CN 202266221 U CN202266221 U CN 202266221U
- Authority
- CN
- China
- Prior art keywords
- sealing
- tube
- central tube
- drag
- salvageable
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 238000005406 washing Methods 0.000 claims description 16
- 230000008676 import Effects 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 6
- 238000003801 milling Methods 0.000 abstract description 4
- 210000000078 claw Anatomy 0.000 abstract 4
- 238000004080 punching Methods 0.000 abstract 3
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 206010008469 Chest discomfort Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model relates to the technical field of oil field drilling, in particular to a salvageable bottom plug combination. A salvaging claw of the bottom plug combination is fixed outside a punching tube through a guide pin; an inner inclined surface designed at the head of the salvaging claw is matched with the conical surface of the head of the punching tube; screw threads are formed inside and outside an upper joint, are connected with the punching tube and a straightening body respectively, and are fixed by fixing pins; a claw block is arranged in a square slot formed in a sealing drag; sealing slots are formed inside and outside the upper end of the sealing drag; a central tube is arranged inside the sealing drag, and supports the claw block; sawtooth-shaped teeth are designed in the central tube, and are in threaded connection with an introduction joint; and a bearing ring is in threaded connection with the sealing drag, and is arranged in an annular annulus between the sealing drag and the hollow tube. A salvageable shoe is arranged on the bottommost edge of an expansion tube; when the expansion tube finishes working, a salvaging tool is put into a well to salvage the salvageable shoe; therefore, the salvageable bottom plug combination is safe, reliable, convenient and quick; and a large amount of drilling and milling time and the drilling cost are saved.
Description
Technical field:
The utility model relates to a kind of oil field and bores the completion technique field, stifled combination at the bottom of particularly a kind of salvagable.
Background technology:
Bore the development of completion technique in recent years along with the oil field; Utilize bulged tube technology to optimize well bore, packing water layer, sand control raising the output; Casing repairing has obtained using widely; At present the expansion high pressure chest of expansion tube mainly use the high pressure chest that forms between expansion cone and the expansion tube plug as power to the expansion tube operation of expanding, need be lowered to junk mill at last guide shoe is carried out milling, and under the unsettled situation of the pressure of the drill, often cause drilling failures such as guide shoe whereabouts or worn out subsidy pipe; Not only prolonged construction period and also increased construction risk, brought a lot of inconvenience to drilling well work.
The utility model content:
The technical problem that the utility model will solve is blocked up combination at the bottom of providing a kind of salvagable; Stifled combination comprises fishing tool and can drag for guide shoe two parts at this end; Can drag for guide shoe and be installed in expansion tube bottom, after the expansion tube end of job, the salvaging of fishing tool G.I.H can be dragged for guide shoe, safe and reliable; Convenient and swift, save a large amount of brills time of milling and saved drilling cost simultaneously.Overcome prior art and need be lowered to junk mill guide shoe is carried out milling, prolonged construction period, increased the deficiency of construction risk.
The technical scheme that the utility model is taked is: stifled combination at the bottom of a kind of salvagable; By fishing tool with can drag for guide shoe and form; Fishing tool comprises top connection, centralizer body, bailer grab, washing pipe and fixing pin, can drag for that guide shoe comprises that sealing is dragged, rest shoe, central tube, importing joint and load-bearing ring; External Design has the bailer grab of saw shape tooth to be fixed on the washing pipe outside through guide pin; And bailer grab can axially move along the gathering sill of washing pipe both sides; The interior inclined-plane of bailer grab head design matches with the conical surface of washing pipe head; Top connection is equipped with screw thread inside and outside the lower end, is connected with centralizer body with washing pipe respectively, and fixes through fixing pin; Rest shoe is installed in and seals in the square groove that drags; Sealing is equipped with seal groove inside and outside dragging the upper end; Central tube is contained in and seals the inside of dragging and support rest shoe, and the central tube indoor design has saw shape tooth, and is connected with the importing joint screw thread; The load-bearing ring drags to be threaded and to be installed in sealing with sealing and drags in the annular space with central tube, and the load-bearing ring is connected with central tube through pin.
The beneficial effect of the utility model is: the utility model has been owing to adopted bailer grab to cooperate with the inclined-plane of washing pipe, thereby has the function that strengthens the engagement force between the sawtooth simultaneously of sending into that makes things convenient for fishing tool; Owing to adopted the structure design of central tube, fall enough spaces are provided for releasing of rest shoe, make things convenient for instrument on carry.In addition, the utlity model has salvaging reliability height, the advantage of easy construction.
Description of drawings:
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of fishing tool.
Fig. 2 is for dragging for the structural representation of guide shoe.
The specific embodiment:
Like Fig. 1, shown in Figure 2; Stifled combination at the bottom of a kind of salvagable; By fishing tool with can drag for guide shoe and form; Fishing tool is made up of top connection 1, centralizer body 2, bailer grab 3, washing pipe 4, guide pin 5 and fixing pin 6, can drag for guide shoe and dragged 7, rest shoe 8, central tube 9, steady pin 10, pin 11, imported joint 12, load-bearing ring 13 and locking nail 14 and form by sealing; External Design has the bailer grab 3 of saw shape tooth to be fixed on washing pipe 4 outsides through guide pin 5; And bailer grab 3 can axially move along the gathering sill of washing pipe 4 both sides; The interior inclined-plane of bailer grab 3 head design matches with the conical surface of washing pipe 4 heads, makes things convenient for bailer grab 3 entering can drag for guide shoe and when last carrying, can strengthen engagement force simultaneously; Top connection 1 upper end is that tubing thread is used for connecting and sends into tubing string, is equipped with screw thread inside and outside the lower end, is connected with centralizer body 2 with washing pipe 4 respectively, and fixes through fixing pin 6; Rest shoe 8 be installed in sealing drag be used in 7 the square groove with the expansion tube inwall on the sawtooth fixation that has been meshed, seal and be equipped with seal groove inside and outside dragging 7 upper ends, be equipped with in the seal groove sealing ring be used for guaranteeing with expansion tube and central tube between be connected sealing; Central tube 9 is contained in sealing and drags 7 inside and support rest shoe 8; Central tube 9 indoor designs have saw shape tooth; And be threaded with importing joint 12, load-bearing ring 13 and sealing drag 7 be threaded and be installed in sealing drag 7 and the annular space of central tube 9 in, load-bearing ring 13 11 is connected with central tube 9 through pinning.
During construction, can drag for guide shoe and be installed in expansion tube bottom and become expansion chamber with bloated taper.Behind the expansion end-of-job, be lowered to fishing tool and salvage.Fishing tool is lowered into can drags for the guide shoe position, pressurization makes bailer grab 3 be meshed with the sawtooth of central tube 9, when the pressure of the drill increases suddenly, stops the instrument of transferring.The upper lifting pipe post at this moment, because pin 11 strengthens upper lifting force, is cut off when upper lifting force increases about 3 tons pins 11; At this moment slowly promote tubing string, central tube 9 moves vertically, when the step part of central tube 9 moves past rest shoe 8; The supporting role of 9 pairs of rest shoes 8 of central tube will disappear, and at this moment rest shoe 8 breaks away from the expansion tube tube wall, drops at central tube 9 bottlenecks; Continue the upper lifting pipe post, the whole guide shoe that drags for will be taken out of well head by fishing tool, accomplish fishing.
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. block up combination at the bottom of a salvagable; By fishing tool with can drag for guide shoe and form; Fishing tool comprises top connection (1), centralizer body (2), bailer grab (3), washing pipe (4) and fixing pin (6), can drag for guide shoe and comprise that sealing drags (7), rest shoe (8), central tube (9), imports joint (12) and load-bearing ring (13); It is characterized in that: external Design has the bailer grab (3) of saw shape tooth to be fixed on washing pipe (4) outside through guide pin (5); And bailer grab (3) can axially move along the gathering sill of washing pipe (4) both sides; The interior inclined-plane of bailer grab (3) head design matches with the conical surface of washing pipe (4) head; Top connection (1) is equipped with screw thread inside and outside the lower end, is connected with centralizer body (2) with washing pipe (4) respectively, and fixing through fixing pin (6); Rest shoe (8) is installed in sealing and drags in the square groove of (7); Sealing is equipped with seal groove inside and outside dragging (7) upper end; Central tube (9) is contained in sealing and drags the inside of (7) and support rest shoe (8), and central tube (9) indoor design has saw shape tooth, and is threaded with importing joint (12); Load-bearing ring (13) drags (7) to be threaded and is installed in sealing and drags in the annular space of (7) and central tube (9) with sealing, load-bearing ring (13) is connected with central tube (9) through pin (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358368 CN202266221U (en) | 2011-08-28 | 2011-08-28 | Salvageable bottom plug combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358368 CN202266221U (en) | 2011-08-28 | 2011-08-28 | Salvageable bottom plug combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266221U true CN202266221U (en) | 2012-06-06 |
Family
ID=46157019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120358368 Expired - Fee Related CN202266221U (en) | 2011-08-28 | 2011-08-28 | Salvageable bottom plug combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266221U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821472A (en) * | 2012-11-16 | 2014-05-28 | 中国石油天然气股份有限公司 | Fishing bottom plug and fishing tool for expansion pipe |
| CN107575180A (en) * | 2017-09-14 | 2018-01-12 | 吴晰 | Reversible drags for anchor |
| CN114753795A (en) * | 2021-01-08 | 2022-07-15 | 中国石油天然气集团有限公司 | Expansion pipe patching tool and method |
-
2011
- 2011-08-28 CN CN 201120358368 patent/CN202266221U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821472A (en) * | 2012-11-16 | 2014-05-28 | 中国石油天然气股份有限公司 | Fishing bottom plug and fishing tool for expansion pipe |
| CN103821472B (en) * | 2012-11-16 | 2016-08-03 | 中国石油天然气股份有限公司 | Fishing bottom plug and fishing tool for expansion pipe |
| CN107575180A (en) * | 2017-09-14 | 2018-01-12 | 吴晰 | Reversible drags for anchor |
| CN114753795A (en) * | 2021-01-08 | 2022-07-15 | 中国石油天然气集团有限公司 | Expansion pipe patching tool and method |
| CN114753795B (en) * | 2021-01-08 | 2024-03-01 | 中国石油天然气集团有限公司 | Expansion pipe patch tool and method |
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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 |