CN2703117Y - Casing segment milling tool - Google Patents
Casing segment milling tool Download PDFInfo
- Publication number
- CN2703117Y CN2703117Y CN 200420065443 CN200420065443U CN2703117Y CN 2703117 Y CN2703117 Y CN 2703117Y CN 200420065443 CN200420065443 CN 200420065443 CN 200420065443 U CN200420065443 U CN 200420065443U CN 2703117 Y CN2703117 Y CN 2703117Y
- Authority
- CN
- China
- Prior art keywords
- groove
- positioning sleeve
- central tube
- piston
- wing
- 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 - Lifetime
Links
Abstract
The utility model relates to a casing segment milling tool, belonging to the downhole tool of the well drilling of the oil-gas field. The utility model is characterized in that part of an axial penetration groove of the exterior of a body (8) is a clamping groove, and the section shape of the clamping groove is a step shape of narrow top and wide bottom. After a tool holder is assembled, the combined part of a locating sleeve is arranged in the clamping groove by the penetration groove of the upper part of the clamping groove, and the penetration groove on the topmost position of the body (8) is provided with a pressing sleeve(13); a balancer (3) is provided with a plurality of through holes which are distributed uniformly, one end of the balancer is positioned on the step surface of the inner cavity of an upper joint(1), and the other end closely clings to the upper end surface of a center pipe(7); a spraying nozzle (2) is arranged in the inner cavity of the balancer(3) by a clamping spring or other mode. Under the action of the differential pressure, a piston (5) compresses a spring (6) and drives the center pipe (7) to move downward, which makes the tool wing extend out, and then the casing can be cut and milled. The utility model has the characteristics of simple structure and easy production, and besides, because the structure of the tool holder is improved, the casing segment milling tool has more reasonable stress and great improvement of the performance reliability of the tool.
Description
Technical field
The utility model relates to the casing window sidetracking instrument, particularly a kind of casing section milling instrument.
Background technology
When sidetrack horizontal well and Multilateral Wells window sidetracking, the mode of windowing commonly used at present has two kinds: a kind of is to adopt to open to begin to mill, and mills out disciform window on sleeve pipe, and another kind of method is to mill disconnected big section sleeve pipe, window sidetracking then with the casing section milling instrument.Adopt being lowered to of first kind of follow-up drilling tool of mode of windowing to hang the window problem in the aboveground existence of minority, although adopted thousand and one way at present, still solution that can not be in full force and effect, although there is time-consuming problem in the mode with the casing section milling instrument, but can effectively avoid extension window problem, a kind of good method of the casing window sidetracking of can yet be regarded as.
Summary of the invention
The purpose of this utility model is to provide a kind of simple in structure, dependable performance, easy to operate casing section milling instrument.
The utility model mainly partly is made up of top connection 1, nozzle 2, equalizer 3, piston 5, spring 6, central tube 7, body 8, wing 9, supporting positive cover 10, lower contact 11 etc.; Body 8 outsides have several along the axially saturating groove that circumferentially is symmetrically distributed, and the cutter holder that has wing 9 is installed in the groove, and welding-on has carbide alloy on the wing 9; Piston 5 is fixed together with central tube 7, in the space that piston 5, body 8, central tube 7 form spring 6 is housed; Supporting positive cover 10 is equipped with in the position of the corresponding wing 9 in body 8 lower ends, body 8 is connected with lower contact 11 bottom, it is characterized in that: bearing pin 17 is with wing 9 and positioning sleeve a15, positioning sleeve b16 connects to form cutter holder, some is draw-in groove for the axially saturating groove of body 8 outsides, the cross sectional shape of draw-in groove is up-narrow and down-wide stairstepping, draw-in groove outermost end gap width is less than positioning sleeve a15, the width of positioning sleeve b16 built-up section, cutter holder assembles back positioning sleeve a15, positioning sleeve b16 built-up section is by the saturating groove on the draw-in groove top draw-in groove of packing into, clamping sleeve 13 matches with body 8 saturating groove uppermost position in fig-ure, screw 12,14 are fixed on clamping sleeve 13 on the body 8, and the clamping sleeve lower end is near cutter holder.Equalizer 3 has several uniform axially extending bores, and the one end is positioned the step surface of top connection 1 inner chamber, the upper surface of the adjacent central tube 7 of the other end.Nozzle 2 is contained in equalizer 3 inner chambers by jump ring or other modes.
The utlity model has simple in structure, be easy to machining characteristics, and make its more reasonable stress owing to improved the structure of cutter holder, improved the tool performance reliability greatly.
Description of drawings
Fig. 1 the utility model structural representation
The A-A sectional view of Fig. 2 Fig. 1
Specific embodiments
Casing section milling instrument as described in Figure 1 mainly partly is made up of top connection 1, nozzle 2, equalizer 3, piston 5, spring 6, central tube 7, body 8, wing 9, supporting positive cover 10, lower contact 11 etc.; Body 8 outsides have several along the axially saturating groove that circumferentially is symmetrically distributed, and the cutter holder that has wing 9 is installed in the groove, and welding-on has carbide alloy on the wing 9; Piston 5 is fixed together with central tube 7, in the space that piston 5, body 8, central tube 7 form spring 6 is housed; Supporting positive cover 10 is equipped with in the position of the corresponding wing 9 in body 8 lower ends, body 8 is connected with lower contact 11 bottom, it is characterized in that: bearing pin 17 is with wing 9 and positioning sleeve a15, positioning sleeve b16 connects to form cutter holder, some is draw-in groove for the axially saturating groove of body 8 outsides, the cross sectional shape of draw-in groove is up-narrow and down-wide stairstepping, draw-in groove outermost end gap width is less than positioning sleeve a15, the width of positioning sleeve b16 built-up section, cutter holder assembles back positioning sleeve a15, positioning sleeve b16 built-up section is by the saturating groove on the draw-in groove top draw-in groove of packing into, clamping sleeve 13 match with body 8 saturating groove uppermost position in fig-ure (seeing accompanying drawing 2), screw 12,14 are fixed on clamping sleeve 13 on the body 8, and the clamping sleeve lower end is near cutter holder.Equalizer 3 has several uniform axially extending bores, and the one end is positioned the step surface of top connection 1 inner chamber, the upper surface of the adjacent central tube 7 of the other end.Nozzle 2 is contained in equalizer 3 inner chambers by jump ring or other modes.
By positioning sleeve and clamping sleeve power is passed to body 8 for ease of wing 9 when stressed.The pin-and-hole shaped design that positioning sleeve a15, positioning sleeve b16 install bearing pin 17 is an oblong.
As further improvement of the utility model, piston 5 can adopt with central tube 7 and be threaded, and near position of piston stop collar 4 is installed on central tube, prevents from displacement to axial to occur between piston 5 and the central tube 7, in addition, can also adopt welding to wait other connected mode.
Operating principle of the present utility model is as follows: the casing section milling instrument is down to the precalculated position, down-hole, the turn on pump circulation, under differential pressure action, piston 5 compression springs 6 are descending, piston 5 promotion central tubes 7 are descending simultaneously, make central tube 7 slowly eject wing 9, wing 9 expands outwardly the contact sleeve inside pipe wall, leaves certain interval between central tube 7 and the equalizer 3, at this moment, the ground pump pressure have descend, start rotating disk, begin the cutting and the operation of milling sleeve pipe.After cutting and the operation of milling sleeve pipe are finished or other situations when carrying on need be with the casing section milling instrument, termination of pumping, piston 5 is under the effect of spring 6 restoring forces, and drive central tube 7 is up, and wing 9 slowly is recovered in the saturating groove of body 8, the upper lifting pipe post.
Claims (3)
1, a kind of casing section milling instrument mainly is made up of top connection (1), nozzle (2), equalizer (3), piston (5), spring (6), central tube (7), body (8), wing (9), supporting positive cover (10), lower contact parts such as (11); Body (8) outside has several along the axially saturating groove that circumferentially is symmetrically distributed, and the cutter holder that has wing (9) is installed in the groove, and wing (9) is gone up welding-on carbide alloy; Piston (5) is fixed together with central tube (7), in the space that piston (5), body (8), central tube (7) form spring (6) is housed; Supporting positive cover (10) is equipped with in the position of the corresponding wing in body (8) lower end (9), and body (8) is connected with lower contact (11) bottom, it is characterized in that:
A, bearing pin (17) is with wing (9) and positioning sleeve a (15), positioning sleeve b (16) connects to form cutter holder, some is draw-in groove for the axially saturating groove of body (8) outside, the cross sectional shape of draw-in groove is up-narrow and down-wide stairstepping, draw-in groove outermost end gap width is less than positioning sleeve a (15), the width of positioning sleeve b (16) built-up section, cutter holder assembles back positioning sleeve a (15), positioning sleeve b (16) built-up section is by the saturating groove on the draw-in groove top draw-in groove of packing into, clamping sleeve (13) matches with the saturating groove uppermost position in fig-ure of body (8), screw (12,14) clamping sleeve (13) is fixed on the body (8), the clamping sleeve lower end is near cutter holder;
B, equalizer (3) have several uniform axially extending bores, and the one end is positioned the step surface of top connection (1) inner chamber, the upper surface of the adjacent central tube of the other end (7);
C, nozzle (2) are contained in equalizer (3) inner chamber by jump ring or other modes.
2, casing section milling instrument according to claim 1 is characterized in that: the pin-and-hole that positioning sleeve a (15), positioning sleeve b (16) install bearing pin (17) is shaped as oblong.
3, according to claim 1 or 2 described casing section milling instruments, it is characterized in that: piston (5) adopts with central tube (7) and is threaded, and near position of piston stop collar (4) is installed on central tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420065443 CN2703117Y (en) | 2004-05-17 | 2004-05-17 | Casing segment milling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420065443 CN2703117Y (en) | 2004-05-17 | 2004-05-17 | Casing segment milling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2703117Y true CN2703117Y (en) | 2005-06-01 |
Family
ID=34777693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420065443 Expired - Lifetime CN2703117Y (en) | 2004-05-17 | 2004-05-17 | Casing segment milling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2703117Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704881A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Reverse forging milling cutter |
| CN103562488A (en) * | 2011-05-31 | 2014-02-05 | 韦尔泰克有限公司 | Downhole tubing cutter tool |
| CN104712276A (en) * | 2015-03-18 | 2015-06-17 | 长江大学 | Hydraulic internal cutter for cutting sleeve in deep sea |
| CN104727770A (en) * | 2015-03-18 | 2015-06-24 | 长江大学 | Section milling type casing pipe sidetracking windowing tool |
| CN112077205A (en) * | 2020-09-17 | 2020-12-15 | 中海油能源发展股份有限公司 | Mechanical punching tool and operation method |
-
2004
- 2004-05-17 CN CN 200420065443 patent/CN2703117Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103562488A (en) * | 2011-05-31 | 2014-02-05 | 韦尔泰克有限公司 | Downhole tubing cutter tool |
| CN103562488B (en) * | 2011-05-31 | 2016-08-17 | 韦尔泰克有限公司 | Down-hole pipe fitting cutting tool |
| US9441436B2 (en) | 2011-05-31 | 2016-09-13 | Welltec A/S | Downhole tubing cutter tool |
| CN102704881A (en) * | 2012-05-09 | 2012-10-03 | 中国石油天然气股份有限公司 | Reverse forging milling cutter |
| CN102704881B (en) * | 2012-05-09 | 2015-04-22 | 中国石油天然气股份有限公司 | Reverse forging milling cutter |
| CN104712276A (en) * | 2015-03-18 | 2015-06-17 | 长江大学 | Hydraulic internal cutter for cutting sleeve in deep sea |
| CN104727770A (en) * | 2015-03-18 | 2015-06-24 | 长江大学 | Section milling type casing pipe sidetracking windowing tool |
| CN112077205A (en) * | 2020-09-17 | 2020-12-15 | 中海油能源发展股份有限公司 | Mechanical punching tool and operation method |
| CN112077205B (en) * | 2020-09-17 | 2022-06-03 | 中海油能源发展股份有限公司 | Mechanical punching tool and operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081212 Address after: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee after: Western Drilling Kelamayi Drilling Technology Institute Address before: Hongyan Karamay Road, the Xinjiang Uygur Autonomous Region No. 80, zip code: 834000 Patentee before: Research Inst of Drilling Technology, Xinjiang Petroleum Administration |
|
| ASS | Succession or assignment of patent right |
Owner name: WEST DRILLING KARAMAY DRILLING CRAFT RESEARCH INST Free format text: FORMER OWNER: DRILLING WELL TECHNOLOGY INSTITUTE, PETROLEUM ADMINISTRATION BUREAU, XINJIANG Effective date: 20081212 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140517 Granted publication date: 20050601 |