CN203685093U - Downhole bushing end mill - Google Patents
Downhole bushing end mill Download PDFInfo
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- CN203685093U CN203685093U CN201320896464.6U CN201320896464U CN203685093U CN 203685093 U CN203685093 U CN 203685093U CN 201320896464 U CN201320896464 U CN 201320896464U CN 203685093 U CN203685093 U CN 203685093U
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- bushing
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Abstract
The utility model discloses a downhole bushing end mill which comprises an end mill positioning device, a rectangular three-piece check ring, a signal mechanism, a piston mechanism, a milling cutter device and a cutter block retractable mechanism, wherein the rectangular three-piece check ring is embedded in a clamping groove of a body, a fixed flow guide cap and a lower flow guide body are positioned on the body and are connected as a whole through a bolt, the signal mechanism can judge the extending degree of a blade of the end mill according to changes of ground pumping pressure, the piston mechanism compresses a spring to move downward, a pumping cutter block stretches, and a pump stopping cutter block retracts into the body under the action of a flat spring. The downhole bushing end mill has the advantages that the cycle of window sidetrack drilling can be greatly shortened, and window sidetrack drilling cost is reduced; accident loss is greatly reduce; drilling investment cost is saved to the largest extent by means of an upper bushing of a stripper well or an abandoned well, and recovery efficiency of a single well is improved; the bushing and open well annulus causing oil gas upward flowing due to poor well cementation quality are blocked; the downhole bushing end mill is widely used in bushing taking, bushing replacement and gas storage improvement.
Description
Technical field
The utility model relates to a kind of down-hole casing section milling cutter.
Background technology
Along with going deep into gradually of In Oil Field Exploration And Development, the probing quantity increasing year by year of deep-well and ultradeep well, but because of geology or engineering reason, after completion, formation testing is undesirable or few in oil pump capacity after certain production cycle, lose extraction value, in order to save drilling cost, old well can be utilized again, need implement the drilling well of casing sidetracking secondary, completion to old well, therefore need tool for milling window in casing and technique to study.
Casing sidetracking is the critical process of construction before old well sidetracking, and the quality of the mode of windowing and window quality directly has influence on carrying out smoothly of sidetrack horizontal well drilling well, completion and oil producing operation.The at present casing sidetracking two kinds of modes that mainly contain that whipstock is windowed and casing section milling is windowed.
It is to descend directional orientation tool sidetracking after casing milling is fallen that casing section milling is windowed again, instrument equally directed with barefoot laterally drilling is not subject to sleeve pipe magnetic disturbance, and the directed order of accuarcy of kick off is high, and window is level and smooth, without shoulder, the features such as completion is unaffected, are therefore widely used in the large displacement side horizontal well drilling of long section.
Current down-hole casing section milling cutter, be set in body draw-in groove, block material between fixing fair water cone and lower baffle is that cross section is circular opening elastic spring, because elastic spring cross section is little, be stuck in the step being kept off in body just little, elastic spring blocks the conical surface of fixing fair water cone in addition, under the promotion of the high-pressure hydraulic pressure reduction between fixing fair water cone and lower baffle, on fixing fair water cone, waterpower thrust easily promotes elastic spring and shrinks at opening part radial deformation greatly, depart from the elastic spring draw-in groove on body and glide along the conical surface of fixing fair water cone, and with fixing fair water cone, lower baffle promotes descent of piston together, promote six cutter pieces from distending in body, while making termination of pumping without hydraulic pressuring difference, elastic spring is stuck on body inner headed face, only depend on spring restoring force often cannot will fix fair water cone and lower baffle is got back to origin-location, cutter piece cannot be shunk in body, cause casing section milling cutter bit freezing phenomenon.
In addition, enter well, during down to precalculated position turn on pump section milling sleeve pipe, cannot know whether six cutter pieces stretch out body completely with drilling tool at down-hole casing section milling cutter, also just cannot know six largest segment milling diameters after the blade section of stretching out cutter body.When particularly section milling is to casing coupling, cannot judge milling or whole by casing coupling section mill off in box cupling.
Have again, down-hole casing section milling cutter enters before well, need to six blades be bundled in body with iron wire, enter well to precalculated position, down-hole with drilling tool, need to open blade time, need be pressed on piston by the hydraulic coupling that large pump pressure produces, strut cutter piece and break and be bundled in intrinsic iron wire and will stretch out cutter piece pushing away under piston by force, now, cutter piece freely rotates in edge, axle center section milling cutter certain limit radially with regard to obtaining take the pivot pin of link body and cutter interblock.This phenomenon makes just section milling sleeve pipe of turn on pump, termination of pumping section milling cutter cutter piece just can freely radially rotate, the section of causing milling cutter is opened after blade, need the predetermined sleeve pipe of a secondary segment mill off, otherwise need to the section of tripping out milling cutter to ground, again with iron wire, cutter piece is bundled in body after, lower brill finds the sleeve pipe position of last section mill off, turn on pump break iron wire, stretch out cutter piece and continue a section milling sleeve pipe.
Summary of the invention
Technical problem to be solved in the utility model is to provide and a kind ofly casing section milling cutter can be fixedly positioning, transmission of signal and automatically open or thereby shrinkage blade reduces the down-hole casing section milling cutter of the number of times that makes a trip.
The technical scheme that the utility model adopts is: a kind of down-hole casing section milling cutter, comprise: body, fixing fair water cone, back-up ring, lower baffle, piston, spring, cutter piece, described back-up ring is embedded in the draw-in groove of described body endoporus, draw-in groove on back-up ring and fixing fair water cone and lower baffle is suitable, between described fixing fair water cone and lower baffle, be bolted, also comprise signal spring, nozzle, diversion rod, support set, location briquetting, spring, spring set bolt, bearing pin, piston pressing plate, described fixing fair water cone, the inside of lower baffle and piston is provided with perforation chamber, described diversion rod is arranged on and connects in chamber, described diversion rod top is provided with convex platform, convex platform is positioned at described fixing fair water cone inner cavity, diversion rod body below convex platform is arranged in described lower baffle chamber and the sheathed nozzle of piston chamber, the position that the convex platform that is positioned at described fixing fair water cone inner cavity chamber extends diversion rod is provided with described signal spring, described piston upper end is provided with the piston pressing plate that promotes piston down sliding, is formed with the first boss and the second boss on the piston body of rod, between first, second boss and described body, forms cavity, and described spring housing is on the body of rod of described piston, described piston body of rod bottom concentric holes portion in described body stretches out, and end is supported by support set, on the outer wall of described body, be positioned at concentric holes subordinate and hold the circumferentially staggered mounting groove that is provided with multiple cutter pieces, described cutter piece one end is arranged in groove by bearing pin, and one end of spring is enclosed within on set bolt, and the other end is fixed on described body with described location briquetting.
Described back-up ring is that cross section is the annulus three lobe back-up rings of rectangle.
Described nozzle has three chambeies, and epicoele is for discharging chamber, and middle part is pressure booster cavity, and bottom is pressure pressure stabilizing cavity.
Described spring is flat spring.
The beneficial effects of the utility model are: can significantly shorten the cycle of window sidetracking, reduce window sidetracking cost; Significantly retrieve causality loss; Utilize stripper well or abandoned well upper sleeve, save to greatest extent drilling well investment cost, improve single well yield; Shutoff causes annular space between the sleeve pipe of altering on oil gas and bore hole because cementing quality is bad; Be used for getting cover and change cover operation and use extensively in gas storage transformation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model down-hole casing section milling cutter;
Fig. 4 is the rectangle three lobe back-up ring schematic diagrames of the utility model down-hole casing section milling cutter;
Fig. 2 is the rectangle three lobe back-up ring installation position schematic diagrames of the utility model down-hole casing section milling cutter;
Fig. 3 is the rectangle three lobe back-up ring installation position enlarged diagrams of the utility model down-hole casing section milling cutter;
Fig. 8 is the nozzle schematic diagram of the utility model down-hole casing section milling cutter;
Fig. 5 is the cutter piece of the utility model down-hole casing section milling cutter view before turn on pump;
Fig. 6 is that the A-A of Fig. 5 is to generalized section;
Fig. 7 is the cutter piece of the utility model down-hole casing section milling cutter view after turn on pump;
Figure 10 is the flat spring schematic diagram of the utility model down-hole casing section milling cutter;
Fig. 9 is the cutter piece schematic diagram of the utility model down-hole casing section milling cutter.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the schematic diagram of the utility model down-hole casing section milling cutter.As shown in the figure, a kind of down-hole casing section milling cutter, comprising: body 1, fixing fair water cone 2, back-up ring 4, lower baffle 5, piston 8, spring 9, cutter piece 11, described back-up ring 4 is embedded in the draw-in groove of described body 1 endoporus, and the draw-in groove on the protuberance of back-up ring 4 and fixing fair water cone 2 and lower baffle 5 is suitable, corresponding porose and be bolted signal spring 3 between described fixing fair water cone 2 and lower baffle 5, nozzle 6, diversion rod 7, support set 10, location briquetting 12, spring 13, spring set bolt 14, bearing pin 15, piston pressing plate 16, described fixing fair water cone 2, the inside of lower baffle 5 and piston 8 is provided with perforation chamber, connect in chamber and be provided with diversion rod 7, described diversion rod 7 tops are provided with convex platform, in bottom, lower convex platform is set, lower convex platform forms the bottom of diversion rod, convex platform is positioned at described fixing fair water cone 2 inner cavity, the water conservancy diversion body of rod to lower convex platform below convex platform is arranged in the nozzle 6 of described lower baffle 5 chambers and piston 8 chamber interior settings, and the position that is positioned at the convex platform prolongation diversion rod 7 of described fixing fair water cone 2 inner cavity chamber is provided with described signal spring 3, described piston 8 upper ends are provided with the piston pressing plate 16 that promotes piston down sliding, outer body of rod top is provided with the first boss 8-1 and the second boss 8-2, and be formed with cavity 1-1 with described body 1 inside, be provided with described spring 9 and be enclosed within the outer body of rod of described piston 8 top at described cavity 1-1, the first boss 8-1 be block spring 9 continue compressed, the second boss 8-2 be block piston continue descending, stretch out through the interior concentric holes 1-2 of portion of described body 1 the outer body of rod of described piston 8 bottom, and be provided with support set 10, on the outer wall of described body 1, be positioned at the circumferentially staggered mounting groove that is provided with multiple cutter pieces 11 of the 1-2 of concentric holes portion lower end, described cutter piece 11 one end are movably connected in groove with bearing pin 15, the other end is provided with spring set bolt 14, on described spring set bolt 14, cover has one end of spring 13, and described spring 13 other ends are fixed on described body 1 with described location briquetting 12.
As shown in Figure 1 to Figure 3, the positioner of this section of milling cutter, comprise body 1, fixing fair water cone 2, rectangle three lobe back-up rings 4, lower baffle 5, rectangle three lobe back-up rings 4 are set in the rectangle draw-in groove in body 1, to fix fair water cone 2 locates with lower baffle 5, to fix fair water cone 2 with six square bolts in three again and link together with lower baffle 5, realize the location of this device.
As shown in Figure 4, rectangle three lobe back-up rings 4 are on an annulus, to open three grooves, form an annulus of three lobe compositions, and the cross section of annulus is rectangle.
As shown in Fig. 5 to 8, signaling gear comprises fixing fair water cone 2, signal spring 3, nozzle 6, diversion rod 7, piston 8, spring 9, piston pressing plate 16, when under down-hole casing section milling cutter to turn on pump behind precalculated position, mud is by six holes corresponding between fixing fair water cone 2 and lower baffle 5, act on the single-piece piston being formed by piston 8 and piston pressing plate 16, due to the annular space between the nozzle 6 and the diversion rod 7 that are set in piston 8, make single-piece piston have up and down pressure reduction, this pressure reduction can promote single-piece piston Compress Spring 9 and is descending; Diversion rod 7 in recoil simulator has boss up and down, and it is free end that convex platform withstands on the upper and lower boss of signal spring 3; Nozzle 6 has three chambeies, and epicoele is for discharging chamber 6-1, and middle part is pressure booster cavity 6-2, and bottom is pressure pressure stabilizing cavity 6-3; When in the pressure pressure stabilizing cavity of diversion rod 7 lower convex platforms at single-piece piston inner nozzle 6, this pressure reduction is moderate, the elastic compression power of diversion rod 7 upper signal springs 3, can balance pressure reduction to top power on the diversion rod 7 free-ended hydraulic pressure in lower convex platform bottom, make diversion rod 7 original positions motionless; When in the pressure booster cavity of diversion rod 7 lower convex platforms at single-piece piston nozzle 6, this pressure reduction increases, and now, ground pump pressure obviously increases, and just can point out cutter piece soon to stretch out completely; When in the earth pressure release chamber of diversion rod 7 lower convex platforms at single-piece piston nozzle 6, pressure reduction reduces fast, single-piece piston bottom hydraulic coupling increases, now, the action of hydraulic force increasing is on diversion rod 7 bottom boss, the elastic compression power of upper signal spring 3 is broken simultaneously, the hydraulic coupling increasing can produce upwards thrust to diversion rod 7, until diversion rod 7 upper signal springs 3 compress completely, diversion rod 7 upper boss are pushed up on the fixing interior corresponding step surface of fair water cone 2, till what now, piston 8 was stable be locked in a certain position is motionless; Namely, piston 8 go downwards to bottom dead centre motionless till; If have External Force Acting on piston 8, force piston 8 to produce the trend of upstroke, diversion rod 7 will produce the trend of moving down under the effect of signal spring 3, just can cause the increase of the upper and lower pressure reduction of single-piece piston, the pressure reduction of this increase will constantly make up the external force acting on piston 8, make it reach balance, make piston 8 firmly be positioned at bottom dead centre place; Now, ground pump pressure obviously reduces, and just can point out cutter piece to stretch out completely.
Piston mechanism comprises fixing fair water cone 2, signal spring 3, nozzle 6, diversion rod 7, piston 8, spring 9, piston pressing plate 16, now, diversion rod 7 lower convex platforms are in the time of the earth pressure release chamber of single-piece piston nozzle 6, pressure reduction is little, diversion rod 7 upper signal springs 3 are completely compressed, diversion rod 7 upper boss are pushed up on the fixing interior corresponding step surface of fair water cone 2, and it is motionless that what piston 8 was stable be locked in lower dead point position.
As shown in Figure 1, milling cutter device comprises body 1, support set 10, cutter piece 11, location briquetting 12, flat spring 13, flat spring set bolt 14, bearing pin 15, with six bearing pins 15 by six cutter piece 11 upper ends of correspondence, be fixed on body 1, make cutter piece 11 can only body 1 interior along bearing pin 15 center lines rotate; In the time there is no pump pressure, cutter piece 11, under the effect of flat spring 13, is contracted in body 1; When after turn on pump, it is descending that pump pressure promotes single-piece piston, the support set 10 of installing on piston 8 moves downward with piston 8, promoting cutter piece 11 outwards rotates around bearing pin 15 center lines, when turn to cutter piece 11 lower ends push up location briquetting 12 corresponding surface time, that piston 8 and support set 10 stop is descending, cutter piece 11 stops operating, and is now the lower dead point position of cutter piece 11; Cutter piece 11 is stuck in the cavity by between body 1, support set 10, location briquetting 12, bearing pin 15; When pump pressure stops, piston 8 and support set 10 the elastic restoring force of spring 9 do under sample on move on to initial position, now, cutter piece 11, under the effect of the elastic restoring force of flat spring 13, is turned back to the initial position in body 1.
As shown in Figure 9, cutter piece 11 lower ends have a groove, and the left side of section is that circular hole, right side are screwed hole, and circular hole and the screwed hole at cutter piece 11 fluting positions, lower end are for linking corresponding flat spring set bolt 14; Flat spring set bolt 14 left sides are that the smooth face of cylinder, the right is flank, flat spring 13 can be positioned in the groove of body 1 lower end.
As shown in figure 10, flat spring 13 is to be surrounded by the spring leaf of thick 1 to 2 millimeter, wide 3 to 6 millimeters; The garden that flat spring 13 left ends surround, is enclosed within on flat spring set bolt 14, can rotate around the axial line of flat spring set bolt 14, and be arranged on the lower end of cutter piece 11 together with flat spring set bolt 14; Flat spring 13 right-hand members are reed always, and straight reed inserts in the groove that body 1 is corresponding with locating briquetting 12, and can be in rectangular channel axial reciprocating rectilinear motion.
Claims (4)
1. a down-hole casing section milling cutter, comprise: body (1), fixing fair water cone (2), back-up ring (4), lower baffle (5), piston (8), spring (9), cutter piece (11), described back-up ring (4) is embedded in the draw-in groove of described body (1) endoporus, back-up ring (4) is suitable with the draw-in groove on fixing fair water cone (2) and lower baffle (5), between described fixing fair water cone (2) and lower baffle (5), be bolted, it is characterized in that: also comprise signal spring (3), nozzle (6), diversion rod (7), support set (10), location briquetting (12), spring (13), spring set bolt (14), bearing pin (15), piston pressing plate (16),
The inside of described fixing fair water cone (2), lower baffle (5) and piston (8) is provided with perforation chamber, described diversion rod (7) is arranged on and connects in chamber, described diversion rod (7) top is provided with convex platform, convex platform is positioned at described fixing fair water cone (2) inner cavity, diversion rod body below convex platform is arranged in described lower baffle (5) chamber and the sheathed nozzle (6) of piston (8) chamber, and the position that is positioned at the convex platform prolongation diversion rod (7) of described fixing fair water cone (2) inner cavity chamber is provided with described signal spring (3);
Described piston (8) upper end is provided with the piston pressing plate (16) that promotes piston down sliding, on the piston body of rod, be formed with the first boss (8-1) and the second boss (8-2), between first, second boss and described body (1), form cavity (1-1), described spring (9) is enclosed within on the body of rod of described piston (8);
Described piston (8) body of rod bottom concentric holes portion (1-2) in described body (1) stretches out, and end is supported by support set (10);
On the outer wall of described body (1), be positioned at the circumferentially staggered mounting groove that is provided with multiple cutter pieces (11) of concentric holes portion (1-2) lower end, described cutter piece (11) one end is arranged in groove by bearing pin (15), it is upper that one end of spring (13) is enclosed within set bolt (14), and the other end is fixed on described body (1) with described location briquetting (12).
2. a kind of down-hole casing section milling cutter according to claim 1, is characterized in that: the annulus three lobe back-up rings that described back-up ring (4) is rectangle for cross section.
3. a kind of down-hole casing section milling cutter according to claim 1, is characterized in that: described nozzle (6) has three chambeies, and epicoele is for discharging chamber (6-1), and middle part is pressure booster cavity (6-2), and bottom is pressure pressure stabilizing cavity (6-3).
4. a kind of down-hole casing section milling cutter according to claim 1, is characterized in that: described spring (13) is flat spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320896464.6U CN203685093U (en) | 2013-12-31 | 2013-12-31 | Downhole bushing end mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320896464.6U CN203685093U (en) | 2013-12-31 | 2013-12-31 | Downhole bushing end mill |
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| Publication Number | Publication Date |
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| CN203685093U true CN203685093U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320896464.6U Expired - Fee Related CN203685093U (en) | 2013-12-31 | 2013-12-31 | Downhole bushing end mill |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105089535A (en) * | 2015-07-03 | 2015-11-25 | 杰瑞能源服务有限公司 | Self-centering rotating cutting tool |
| CN106761516A (en) * | 2016-12-21 | 2017-05-31 | 中国神华能源股份有限公司 | Cleaning plant and treatment drilling well internal residual steel pipe method |
| CN108643854A (en) * | 2018-04-23 | 2018-10-12 | 西华大学 | A kind of hydraulic telescopic type section milling side drilling tool |
| CN109681138A (en) * | 2017-10-19 | 2019-04-26 | 中国石油天然气股份有限公司 | Method for lifting and discharging halogen pipes |
| CN110374536A (en) * | 2019-08-09 | 2019-10-25 | 新疆格瑞迪斯石油技术股份有限公司 | A kind of casing firing milling 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 |
| CN112780207A (en) * | 2021-01-04 | 2021-05-11 | 中国石油天然气集团有限公司 | Cutting board assembly of oil and gas well casing cutting and forging milling system |
| CN115707852A (en) * | 2021-08-18 | 2023-02-21 | 中国石油天然气股份有限公司 | Downhole segment milling tool and method |
-
2013
- 2013-12-31 CN CN201320896464.6U patent/CN203685093U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105089535A (en) * | 2015-07-03 | 2015-11-25 | 杰瑞能源服务有限公司 | Self-centering rotating cutting tool |
| CN105089535B (en) * | 2015-07-03 | 2017-10-20 | 杰瑞能源服务有限公司 | It is a kind of from rotary cutting tool placed in the middle |
| CN106761516A (en) * | 2016-12-21 | 2017-05-31 | 中国神华能源股份有限公司 | Cleaning plant and treatment drilling well internal residual steel pipe method |
| CN109681138A (en) * | 2017-10-19 | 2019-04-26 | 中国石油天然气股份有限公司 | Method for lifting and discharging halogen pipes |
| CN109681138B (en) * | 2017-10-19 | 2021-04-30 | 中国石油天然气股份有限公司 | Method for lifting and discharging halogen pipes |
| CN108643854A (en) * | 2018-04-23 | 2018-10-12 | 西华大学 | A kind of hydraulic telescopic type section milling side drilling tool |
| CN108643854B (en) * | 2018-04-23 | 2020-05-19 | 西华大学 | Hydraulic telescopic type section milling sidetracking tool |
| CN110374536A (en) * | 2019-08-09 | 2019-10-25 | 新疆格瑞迪斯石油技术股份有限公司 | A kind of casing firing milling 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 |
| CN112780207A (en) * | 2021-01-04 | 2021-05-11 | 中国石油天然气集团有限公司 | Cutting board assembly of oil and gas well casing cutting and forging milling system |
| CN115707852A (en) * | 2021-08-18 | 2023-02-21 | 中国石油天然气股份有限公司 | Downhole segment milling tool and method |
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| Date | Code | Title | Description |
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| 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: 20140702 Termination date: 20181231 |