CN101021146A - Inverted feaming reamer - Google Patents
Inverted feaming reamer Download PDFInfo
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- CN101021146A CN101021146A CN 200610012406 CN200610012406A CN101021146A CN 101021146 A CN101021146 A CN 101021146A CN 200610012406 CN200610012406 CN 200610012406 CN 200610012406 A CN200610012406 A CN 200610012406A CN 101021146 A CN101021146 A CN 101021146A
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Abstract
The present invention discloses a back reaming gauge-protecting enlarging bit. It includes the following several portions: upper connector, support, pressure-regulating lever, nozzle, sealing ring, main body, central rod, spring and cutting block. Said invention also provides the concrete structure of above-mentioned every portion and connection mode of all the above-mentioned portions. After the well bore is drilled, said invention can be used for enlarging well bole, not only has the good gauge-protecting effect and high cutting efficiency, but also possesses the back reaming function.
Description
Technical field the present invention relates to bore the back and enlarges the borehole diameter reamer, especially a kind of reamer with guarantor footpath and back reaming function.
Background technology domestic reamer commonly used at present adopts the scraper type cutting tool to carry out the reaming cutting mostly, there is the shortcoming of protecting the footpath poor effect, owing to the particularity of cutting tool shape, cutting element (composite sheet) cloth tooth is restricted, and is difficult to bring into play the advantage of its high stock-removing efficiency simultaneously; Therefore such instrument lacks the back reaming associated mechanisms on structure design in addition, does not possess the back reaming function, when running into the special accident in down-hole, is difficult in time handle.U.S. Pat 6,615,93381 adopt the method for cutting off pin to release the cutting piece, and structure is complicated.Chinese patent＜a kind of enlarging while drilling instrument〉02213884.6, by drilling tool pressurization, cut off that pin, cone move down, blade moves outside the cone inclined-plane, reach the purpose of reaming, the problem that this structure exists is: its relies on cuts off that pin, cone move down, blade moves and realizes cutting outside the cone inclined-plane, therefore mechanism is complicated, and does not have the footpath of guarantor element, easy undergauge, no back reaming function.Chinese patent ZL94217399.6＜a kind of sleeve pipe cuts the instrument of washing〉it is to adopt hydraulic principle that the cutting piece is opened to realize that cutting, its shortcoming are that the cutting piece is regained difficulty, and does not have the back reaming function.
Summary of the invention the objective of the invention is to design a kind of back reaming and protects the footpath reamer.The present invention by Hydraulic Power System, cutting piece open, pinch system, cutting system, centralizing system four parts form.Wherein Hydraulic Power System is made up of top connection, support, pressure regulation bar, nozzle, sealing ring etc.; The cutting piece opens, pinch system is made up of main body, center-pole, recovery piece, block, spring etc.; Cutting system is made up of cutting piece, back reaming element, cutting element, guarantor footpath element etc.; Centralizing system is made up of supporting positive cover, centering short segment, alloy column etc.The present invention realizes like this, on main body, have the hole, this upper end, hole is a tapered plane, there is a groove lower end, block is installed in the lower end in hole on the main body, and the block top is a tapered plane, and the block inboard is a vertical plane, block is processed with groove formation guide rail along inboard vertical plane and top tapered plane, and the bottom surface of this guide rail is a tapered plane; On center-pole, be processed with big groove, this big groove upper surface is a tapered plane, the big groove bottom is a plane in vertical direction, is processed with little groove above near big groove, and big or small two grooves link to each other up and down, the big groove lower end is equipped with the recovery piece, reclaiming the piece top is a tapered plane, and reclaiming the piece inboard is a vertical plane, and reclaiming the piece outside is an arc surface, reclaim piece and be processed with groove formation guide rail along inboard vertical plane and top tapered plane, the bottom surface of this guide rail is a tapered plane; The recovery piece is fixed on the lower end of the big groove of center-pole; The cutting piece is a circular-arc wedge, the cutting piece is put into the big groove of center-pole, cutting piece outside work plane is an arc surface, two inclined-planes are arranged at cutting piece top, interior inclined-plane gradient is identical with center-pole big groove upper surface gradient and match with it, the gradient of the upper end tapered plane in hole is identical and match with it on outer inclined-plane gradient and the main body, the inboard vertical plane of cutting piece matches on the plane of vertical direction with the big groove of center-pole, cutting piece lower end is processed with an oblique angle, this oblique angle is a tabular, respectively there is a plane these root both sides, oblique angle, the cutting piece is sitting on the recovery piece by two planes of this oblique angle root, and this oblique angle inserts in the guide rail that reclaims piece, and matches with the recovery piece, this oblique angle inserts in the guide rail of block under cutting state, and matches with block; Welding-on has the back reaming element on the inclined-plane outside the top of cutting piece, welding-on has guarantor footpath element, at the lower right corner welding-on that cuts piece cutting element arranged on the outer arc face of cutting piece; Spring housing is contained in the annular space of main body and center-pole formation, and the spring upper end withstands on the shoulder of center-pole outer wall, and the spring lower end is sitting on the inwall shoulder of main body.On main body, the alloy column welding-on is in the perforation of supporting positive cover by dowel fixes for supporting positive cover; Centering short segment is connected with main body by screw thread; The present invention is used to bore the back and enlarges well, and it not only has good guarantor footpath effect, high stock-removing efficiency, also possesses the back reaming function simultaneously, help increasing the casing annulus gap, enlarge the oil layer section borehole diameter, improve the oil layer section cementing quality, have great importance reducing drilling cost.
1-top connection among description of drawings Fig. 1 structural representation figure of the present invention, 2-support, 3-sealing ring, 4-sealing ring, 5-center-pole, 6-back reaming element, 7-protect footpath element, 8-cutting element, 9-block, 10-pin, 11-main body, 12-spring, 13-supporting positive cover, 14-alloy column, 15-weld seam, 16-centering short segment, 17-screw, 18-pressure regulation bar, 19-nozzle, 20-cutting piece, 21-recovery piece, 22-pin; Work schematic diagram during Fig. 2 ream operation of the present invention; The sectional drawing of center-pole among Fig. 3 the present invention, the little bottom portion of groove of 31-center-pole plane, 32-center-pole big groove upper end tapered plane, 33-center-pole big groove base plane among the figure; Block vertical view among Fig. 4 the present invention, tapered plane, the 43-block outer arc face of 41-block top tapered plane, 42-block guide rail bottom among the figure; The A-A sectional drawing of block among Fig. 4-1 the present invention, the inboard vertical plane of 44-block among the figure; The right view of cutting piece among Fig. 5 the present invention, 54-cutting bottom surface, piece oblique angle, 55-cutting piece root plane among the figure; The front view of cutting piece among Fig. 5-1 the present invention, in inclined-plane, 52-cutting piece outer arc face, 53-cutting piece lower right side arcwall face, 56-cutting piece inner side plane, the 57-cutting piece top inclined-plane outside the 51-cutting piece top among the figure.
The specific embodiment is with reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 4-1, accompanying drawing 5, accompanying drawing 5-1, the present invention by Hydraulic Power System, cutting piece open, pinch system, cutting system, centralizing system four parts form.Wherein Hydraulic Power System is made up of top connection (1), support (2), pressure regulation bar (18), nozzle (19), sealing ring (3), (4); The cutting piece opens, pinch system is made up of main body (11), center-pole (5), recovery piece (21), block (9), spring (12); Cutting system is made up of cutting piece (20), back reaming element (6), cutting element (8), guarantor's footpath element (7); Centralizing system is made up of supporting positive cover (13), centering short segment (16), alloy column (14).Each component shape and mutual assembly relation are: have the hole on main body (11), this upper end, hole is a tapered plane, and there is a groove lower end, and this groove is the shoulder type groove.The silk hole that pin (10) passes on this groove is installed in block (9) in the hole of main body (11), block (9) outside is an arc surface (43), block (9) top is a tapered plane (41), block (9) inboard is a vertical plane (44), block (9) is processed with groove formation guide rail along inboard vertical plane (44) and top tapered plane (41), and the bottom surface of this guide rail is a tapered plane (42); On center-pole (5), be processed with big groove, big groove top is processed with little groove, the size groove links to each other, its axis at grade, this big groove upper surface is a tapered plane (32), the big groove bottom is a plane (33) in vertical direction, recovery piece (21) is fixed on the lower end of the big groove of center-pole (5) by pin (22), block (9) is similar to recovery piece (21) geometry, reclaiming piece (21) top is a tapered plane, and reclaiming piece (21) inboard is a vertical plane, and reclaiming piece (21) outside is an arc surface, reclaim piece (21) and be processed with groove formation guide rail along inboard vertical plane and top tapered plane, the bottom surface of this guide rail is a tapered plane; Cutting piece (20) is a circular-arc wedge, cutting piece (20) is put into the groove of center-pole (5), cutting piece (20) outside work plane is an arc surface (52), two inclined-planes are arranged at cutting piece (20) top, interior inclined-plane (57), outer inclined-plane (51), tapered plane (32) gradient of interior inclined-plane (57) gradient and center-pole big groove upper end is identical and match with it, the gradient of outer inclined-plane (51) gradient and the upper end tapered plane in main body (11) hole is identical and match with it, the inner side plane (56) of cutting piece (20) matches in the base plane (33) of vertical direction with the big groove of center-pole (5), cutting piece (20) lower end is processed with an oblique angle, this oblique angle is a tabular, this oblique angle root has two planes (55), cutting piece (20) is sitting on the recovery piece (21) by two planes (55) of this oblique angle root, and match in this oblique angle insertion recovery piece (21) guide rail and with reclaiming piece (21), under cutting state, match in the guide rail of this oblique angle insertion block (9) and with block (9); Welding-on is gone up on inclined-plane (51) outside the top of cutting piece (20) back reaming element (6), go up welding-on at the outer arc face (52) of cutting piece (20) has guarantor footpath element (7), goes up the cutting element (8) that welding-on is made up of composite sheet at the lower right side arcwall face (53) of cutting piece (20); Spring (12) is sleeved in the annular space of main body (11) and center-pole (5) formation, and spring (12) upper end withstands on the shoulder of center-pole (5) outer wall, and spring (12) lower end is sitting on the inwall shoulder of main body (11).On main body (11), alloy column (14) welding-on is in the perforation of supporting positive cover (13) by dowel fixes for supporting positive cover (13); Centering short segment (16) is connected with main body (11) by screw thread; Its operating principle is: after this instrument and top drilling tool are connected, down behind the design well depth, start rotating disk, slow turn on pump, this moment, slurry flows was fallen through nozzle (19) generation pressure, it is descending that the pressure that forms promotes center-pole (5), promoting cutting piece (20) when center-pole (5) is descending outwards upholds along the guide rail of block (9), cutting element (8), protecting footpath element (7) contacts with the borehole wall, the borehole wall is cut, and at this moment kit is along with drilling tool is slowly descending, when cutting piece (20) when outwards opening up into maximum position, the pump pressure of this moment has been compared obvious decline with initial the pressure of the drill, at this moment ream operation is carried out in pressurization, and cutting element (8) cuts the borehole wall, when the needs back reaming, just drilling tool is upwards mentioned, back reaming element (6) will cut the bar on the borehole wall; Centering short segment (16) plays centralizing function to instrument in operation.Ream operation finishes, and after the termination of pumping, disappearance falls in the pressure that mud forms, and center-pole (5) makes progress away under the counter-force effect of spring (12), and cutting piece (20) is under the tension of center-pole (5), in the guide rail retrieving tool chamber of reclaiming piece (21).
Claims (7)
1, a kind of back reaming is protected the footpath reamer, it comprises top connection (1), support (2), pressure regulation bar (18), nozzle (19), sealing ring (3), sealing ring (4), main body (11), center-pole (5), cutting piece (20), supporting positive cover (13), centering short segment (16), and top connection (1) is connected with main body (11) external screw thread by its internal thread; Support (2) is installed in the chamber of top connection (1) and main body (11), and by sealing ring (3) and top connection (1), main body (11) good seal; Center-pole (5) is installed in the main body (11), and by sealing ring (4) and main body (11) good seal; Nozzle (19) welding-on is in the hole of center-pole (5); Pressure regulation bar (18) is fixed on the support (2) by screw (17); It is characterized in that on main body (11), having the hole, this upper end, hole is a tapered plane, block (9) is installed in the lower end in main body (11) hole, block (9) top is a tapered plane, block (9) inboard is a vertical plane, block (9) is processed with groove formation guide rail along inboard vertical plane and top tapered plane, and the bottom surface of this guide rail is a tapered plane; On center-pole (5), be processed with big groove, this big groove upper surface is a tapered plane, the big groove bottom is a plane in vertical direction, be processed with little groove above near big groove, big or small two grooves link to each other up and down, and the big groove lower end is equipped with reclaims piece (21), reclaiming piece (21) top is a tapered plane, reclaiming piece (21) inboard is a vertical plane, reclaims piece (21) and is processed with groove formation guide rail along inboard vertical plane and top tapered plane, and the bottom surface of this guide rail is a tapered plane; Recovery piece (21) is fixed on the lower end of the big groove of center-pole (5); Cutting piece (20) is a circular-arc wedge, cutting piece (20) is put into the big groove of center-pole (5), two inclined-planes are arranged at cutting piece (20) top, interior inclined-plane gradient is identical with center-pole big groove upper surface gradient and match with it, the gradient of outer inclined-plane gradient and the upper end tapered plane in main body (11) hole is identical and match with it, the inboard vertical plane of cutting piece (20) matches on the plane of vertical direction with the big groove of center-pole (5), cutting piece (20) lower end is processed with an oblique angle, this oblique angle is a tabular, respectively there is a plane these root both sides, oblique angle, cutting piece (20) is sitting on the recovery piece (21) by two planes of this oblique angle root, and this oblique angle inserts in recovery piece (21) guide rail; Under cutting state, match in the guide rail of this oblique angle insertion block (9) and with block (9); Spring (12) is sleeved in the annular space of main body (11) and center-pole (5) formation, and spring (12) upper end withstands on the shoulder of center-pole (5) outer wall, and spring (12) lower end is sitting on the inwall shoulder of main body (11).
2, a kind of back reaming according to claim 1 is protected the footpath reamer, it is characterized in that one groove being arranged in the lower end in main body (11) hole, pin (10) is installed in block (9) in the hole of main body (11) by the silk hole on this groove, reclaims piece (21) is fixed on the big groove of center-pole (5) by pin (22) lower end.
3, a kind of back reaming according to claim 1 is protected directly reamer, it is characterized in that welding-on has back reaming element (6) on the inclined-plane outside the top of cutting piece (20), welding-on has guarantor footpath element (7), at the lower right corner welding-on that cuts piece (20) cutting element (8) arranged on the outer arc face of cutting piece (20).
4, a kind of back reaming according to claim 1 is protected the footpath reamer, it is characterized in that alloy column (14) welding-on is in the perforation of supporting positive cover (13).
5, a kind of back reaming according to claim 1 is protected the footpath reamer, it is characterized in that block (9) outside is an arc surface, and cutting piece (20) outside work plane is an arc surface, and reclaiming piece (21) outside is an arc surface.
6, protect the footpath reamer according to the described a kind of back reaming of claim 1, it is characterized in that the groove of the lower end in main body (11) hole is the shoulder type groove.
7, a kind of back reaming according to claim 1 is protected the footpath reamer, it is characterized in that being equipped with on center-pole (5) three groups of cutting pieces (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610012406 CN101021146A (en) | 2006-02-14 | 2006-02-14 | Inverted feaming reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610012406 CN101021146A (en) | 2006-02-14 | 2006-02-14 | Inverted feaming reamer |
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| Publication Number | Publication Date |
|---|---|
| CN101021146A true CN101021146A (en) | 2007-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610012406 Pending CN101021146A (en) | 2006-02-14 | 2006-02-14 | Inverted feaming reamer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505943A (en) * | 2018-06-04 | 2018-09-07 | 中石化石油工程技术服务有限公司 | A kind of drilling well reaming reaming hole device |
| CN108979542A (en) * | 2018-06-27 | 2018-12-11 | 中国海洋石油集团有限公司 | A kind of multistage fixed-wing reamer and its application method |
| CN109681123A (en) * | 2018-11-28 | 2019-04-26 | 山东唐口煤业有限公司 | A kind of diameter adjustable drill bit and segmentation expanding method |
| CN110331938A (en) * | 2019-04-29 | 2019-10-15 | 江苏和信石油机械有限公司 | A kind of gear wheel drilling rod |
| CN112252983A (en) * | 2020-11-04 | 2021-01-22 | 中国矿业大学(北京) | Hydraulic hole expanding drill bit |
| CN113669015A (en) * | 2020-05-13 | 2021-11-19 | 中国石油化工股份有限公司 | Lifting type reaming device, drilling and reaming tool and drilling and reaming method |
-
2006
- 2006-02-14 CN CN 200610012406 patent/CN101021146A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108505943A (en) * | 2018-06-04 | 2018-09-07 | 中石化石油工程技术服务有限公司 | A kind of drilling well reaming reaming hole device |
| CN108505943B (en) * | 2018-06-04 | 2023-09-08 | 中石化石油工程技术服务有限公司 | Drilling reaming device |
| CN108979542A (en) * | 2018-06-27 | 2018-12-11 | 中国海洋石油集团有限公司 | A kind of multistage fixed-wing reamer and its application method |
| CN109681123A (en) * | 2018-11-28 | 2019-04-26 | 山东唐口煤业有限公司 | A kind of diameter adjustable drill bit and segmentation expanding method |
| CN109681123B (en) * | 2018-11-28 | 2023-09-29 | 山东唐口煤业有限公司 | Diameter-adjustable drill bit and sectional reaming method |
| CN110331938A (en) * | 2019-04-29 | 2019-10-15 | 江苏和信石油机械有限公司 | A kind of gear wheel drilling rod |
| CN110331938B (en) * | 2019-04-29 | 2020-12-01 | 江苏和信石油机械有限公司 | Roller bit drill rod |
| CN113669015A (en) * | 2020-05-13 | 2021-11-19 | 中国石油化工股份有限公司 | Lifting type reaming device, drilling and reaming tool and drilling and reaming method |
| CN112252983A (en) * | 2020-11-04 | 2021-01-22 | 中国矿业大学(北京) | Hydraulic hole expanding drill bit |
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Open date: 20070822 |