CN202300270U - Ball fish-collecting casing milling head used for taking casings from directional well - Google Patents
Ball fish-collecting casing milling head used for taking casings from directional well Download PDFInfo
- Publication number
- CN202300270U CN202300270U CN201120444775XU CN201120444775U CN202300270U CN 202300270 U CN202300270 U CN 202300270U CN 201120444775X U CN201120444775X U CN 201120444775XU CN 201120444775 U CN201120444775 U CN 201120444775U CN 202300270 U CN202300270 U CN 202300270U
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- milling head
- fish
- ball
- directional well
- cover
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Abstract
The utility model provides a ball fish-collecting casing milling head used for taking casings from a directional well. The ball fish-collecting casing milling head used for taking the casings from the directional well comprises a cutter body (3), wherein cutter teeth (4) are arranged at the front end of the cutter body (3); a wear-resistant layer (1) is arranged on the cutter teeth (4); an inner cavity of the cutter body (3) is in a horn mouth shape; and steel balls (2) and plugs (5) are distributed in the cavity in the circumferential direction. The casing milling head can well attract a lower port, and a fish head is guaranteed to be sorted out without being damaged; and meanwhile, due to the centralizing effect of the balls, a very strong anti-cut function is performed, and the requirement of casing milling operation of the directional well can be satisfied.
Description
Technical field
The utility model relates to the special tool in the big workover treatment in a kind of oil field, belongs to a kind of directional well and gets and apply mechanically ball and receive fish cover milling head.
Background technology
At present, mill in the construction, mainly use conventional well workover, generally form by cutter hub and cutter hub with the cover milling head at the directional well cover.Because directional well has the existence of hole deviation, mill in the process at cover, if serious bad break mouth when perhaps the fish head is lost, uses the conventional fish instrument of receiving to cut sleeve pipe easily, can't successful spasm fish head, finally cause the fish head to be lost, cause the Important Project accident.Therefore, in spasm fish head construction, to the cover milling head require highly, this instrument should have good receipts fish function, has again to prevent the effect of cutting.
Summary of the invention
In order to overcome the deficiency that exists in the prior art; The utility model provides a kind of directional well to get and applies mechanically ball receipts fish cover milling head; This cover milling head can be good at the spasm lower port, and has guaranteed fish injury-free being cleared, and can satisfy the demand that the directional well cover mills construction.
The technical scheme that the utility model is taked is: this directional well is got and is applied mechanically ball and receive fish cover milling head and comprise cutter hub, and the front end of cutter hub is provided with cutter tooth, and cutter tooth is provided with wearing layer, and described cutter hub inner chamber is along upwards being distributed with steel ball week and blocking up bell mouth shape and chamber in.
The beneficial effect of the utility model is: ball receipts fish cover milling head is compared in use with other conventional cover milling head and is had the following advantages:
1) because directional well has the existence of hole deviation, conventional cover milling head cuts sleeve pipe easily, and therefore, the ball of design is received fish cover milling head, in have ball to set upright, play well anti-cutting and centralizing function, so just guaranteed fish injury-free being cleared;
2) the cover milling head is anodontia streamline jacket milling head shape, and ectosome has twice circulation groove; Inner chamber is a bell mouth shape, and this bell mouth shape structure has the fish of repairing and receives the fish effect, simultaneously can rule overlaps stably and mills top of fish, bit bouncing not, has avoided the engineering of bottom fracture is destroyed, and guarantees that fish head rule is complete not to lose.
3) mill construction owing to overlapping at lower curved section, cover milling head serious wear often rises and changes the cover milling head; Not only waste time and energy, also increase construction cost greatly, therefore; When cover mills construction, very high to the requirement of strength of cover milling head material, therefore; This instrument has used superhard material, can satisfy the requirement that cover mills construction.
Description of drawings:
Fig. 1 is the sketch map of the utility model;
Fig. 2 is the left view of the utility model.
1-wearing layer among the figure, the 2-steel ball, the 3-cutter hub, the 4-cutter tooth, 5-is stifled.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
Shown in figure, this directional well is got and is applied mechanically ball and receive fish cover milling head and comprise cutter hub 3, and the front end of cutter hub 3 is provided with cutter tooth 4, and cutter tooth 4 is provided with wearing layer 1, and described cutter hub 3 inner chambers are along upwards being distributed with steel ball 2 week and blocking up 5 bell mouth shape and chamber in.On cover milling head cutter hub, be added with ball, inner edge has chamfering, it is had set upright, prevent cutting effect, in addition, is designed to bell mouth shape to inner chamber, has good spasm effect, satisfies the requirement of construction.
This novel bottom design is anodontia streamline jacket milling head shape, and ectosome has four road circulation grooves; Inner chamber is a bell mouth shape, and this bell mouth shape structure has the fish of repairing and receives the fish effect; Outside four road circulating slots link to each other favourable circulation with kerve.Adopt the YG alloy will overlap milling head and be paved into streamlined enlarging; Make the scraping of cover milling head become the introducing grinding; The irregular top of fish of milling steadily, bit bouncing not, avoided the engineering of bottom fracture is destroyed, guarantee that fish head rule is complete not to lose; Can solve preferably because of cover decreases seriously, can't implement to reinforce the fish problem of losing of spike.In addition, in the cutter hub indoor design ball is arranged, this pearl can freely roll, and the point-contact junction structure can reduce the frictional resistance between cover milling head and the sleeve pipe, plays the anti-effect of cutting of setting upright.
A bite directional well that 912-oblique 313 wells in west are factories, through the data investigation, this well hole angle when 150m is 0.9 °, and hole angle is 10.3 ° when 200m, and hole angle is 14.2 ° when 250m, and maximum here build angle rate is 13.3 °/100m.Serious and the leakage of this well construction premenstruum (premenstrua) proof distortion requires to change the overhaul construction.This well was got and is changed cover overhaul construction by repairing one on May 14th, 2010, through early stage play operations such as former well, printing, shaping and drifting, May 16 began to test leakage, confirm that the absorption well section is 361.22m-371.22m.04:00 began cover and milled October 17, and 17:00 on the 18th cover mills to well 192.7m, and this moment, drilling depth was slow, and the bit bouncing phenomenon is arranged, and laid down kelly bar, and cutting is salvaged, and pulls sleeve pipe 18 out with half, connects the circulation of Φ 219mm kelly bar afterwards and washes passage.8:00 on the 20th trips out cover and mills drilling tool, finds cover milling head well damage.Descend afterwards Φ 300mm milling cover milling head cover to mill, overlap to well depth 196.5m, because drilling depth is slow, unload kelly bar, connect the circulation of six rib kelly bars and wash passage, following Φ 160mm lead stamp is printed, and impression is the sleeve pipe seal., tripping out down anti-1 of the cover milling head of cutting of Φ 290mm ball, cover mills to well depth 359.1m; Bit bouncing is serious, and passage is washed in circulation, unloads kelly bar; Following Φ 118mm slide block drags for lance and cuts salvaging, pulls 13 half of sleeve pipes out, the most later half sleeve pipe well damage; Following Φ 290mm receives fish cover milling head cover and mills the receipts fish, and BHA is that Φ 290mm ball receipts fish cover milling head+2+ball of Φ 219mm casing section mill 1+ball centralizer+casing section mill 1+ball centralizer+casing section mill centralizer+Φ 219mm six rib kelly bars overlap and mill drilling depth 20.6m; Well depth 379.7m, Φ 118mm slide block drags for the salvaging of lance back-off under the 8:00 on the 26th, pulls 2 half of sleeve pipes out.Have down afterwards and mend the bunch tube butt joint that connects guide shoe, 12:00 docked successfully on 31st, and pressure testing qualified back construction finishes.The application that ball is received fish cover milling head has obtained good result, has fully represented the superiority of conventional cover milling head in practical application of this instrument.
Claims (1)
1. a directional well is got and is applied mechanically ball receipts fish cover milling head; Comprise cutter hub (3); The front end of cutter hub (3) is provided with cutter tooth (4); Cutter tooth (4) is provided with wearing layer (1), it is characterized in that: described cutter hub (3) inner chamber is along upwards being distributed with steel ball (2) and stifled (5) week in bell mouth shape and the chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120444775XU CN202300270U (en) | 2011-11-11 | 2011-11-11 | Ball fish-collecting casing milling head used for taking casings from directional well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120444775XU CN202300270U (en) | 2011-11-11 | 2011-11-11 | Ball fish-collecting casing milling head used for taking casings from directional well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300270U true CN202300270U (en) | 2012-07-04 |
Family
ID=46369192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120444775XU Expired - Fee Related CN202300270U (en) | 2011-11-11 | 2011-11-11 | Ball fish-collecting casing milling head used for taking casings from directional well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300270U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643915A (en) * | 2013-12-03 | 2014-03-19 | 中国石油天然气股份有限公司 | Composite casing cutter head for well repair in oil field |
| CN108533204A (en) * | 2018-07-06 | 2018-09-14 | 西安荣达石油工程有限公司 | A kind of fishing socket |
| CN113062702A (en) * | 2021-03-08 | 2021-07-02 | 山东省煤田地质局第一勘探队 | Drill collar fishing equipment and method |
-
2011
- 2011-11-11 CN CN201120444775XU patent/CN202300270U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643915A (en) * | 2013-12-03 | 2014-03-19 | 中国石油天然气股份有限公司 | Composite casing cutter head for well repair in oil field |
| CN108533204A (en) * | 2018-07-06 | 2018-09-14 | 西安荣达石油工程有限公司 | A kind of fishing socket |
| CN113062702A (en) * | 2021-03-08 | 2021-07-02 | 山东省煤田地质局第一勘探队 | Drill collar fishing equipment and method |
| CN113062702B (en) * | 2021-03-08 | 2022-11-08 | 山东省煤田地质局第一勘探队 | Drill collar fishing equipment 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20161111 |