CN102943625B - Hole expander - Google Patents
Hole expander Download PDFInfo
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- CN102943625B CN102943625B CN201210502411.1A CN201210502411A CN102943625B CN 102943625 B CN102943625 B CN 102943625B CN 201210502411 A CN201210502411 A CN 201210502411A CN 102943625 B CN102943625 B CN 102943625B
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- 230000007246 mechanism Effects 0.000 claims abstract description 82
- 230000005540 biological transmission Effects 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 238000010276 construction Methods 0.000 claims description 19
- 239000007787 solid Substances 0.000 claims description 13
- 230000008520 organization Effects 0.000 claims description 4
- 238000005553 drilling Methods 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 12
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000012856 packing Methods 0.000 description 5
- 241000826860 Trapezium Species 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention discloses a reamer which comprises an outer barrel, a blade mechanism, a transmission shaft mechanism and a reset mechanism, wherein the transmission shaft mechanism is arranged in the outer barrel and slides along the axial direction of the outer barrel, the reset mechanism is used for resetting the transmission shaft mechanism, a first sealing structure matched and sealed with the outer wall of the transmission shaft mechanism is arranged at the upper end of the outer barrel, a blade groove is arranged at the lower end of the outer barrel, a second sealing structure is arranged at the end part of the outer barrel, the blade mechanism is arranged in the blade groove, an expander for driving the blade mechanism to expand outwards is arranged on the transmission shaft mechanism, and the inner cavity of the transmission shaft mechanism is communicated with the. The invention has the advantages of contractibility, no limitation by the wall thickness of the tool body, larger reaming size, reasonable sealing structure, difficult entry of drilling fluid into key parts of the reaming body in the expansion process of the reaming blades in the drilling process, and no influence on the flexibility of the blades.
Description
Technical field
The present invention relates to a kind of underreamer instrument of drilling well, just relate to a kind of reamer of reaming hole operation of drilling process specifically, for oil and gas well drilling technology, belong to the design and manufacturing technology field of downhole tool.
Background technology
In the process of oil/gas drilling operation, in order under enter the convenience of sleeve pipe, or bore meet be easy to the stratum of undergauge time, the well be drilled to usually has undergauge in various degree, in this case, just needs well to be expanded as the larger well of diameter.Along with oil/gas drilling is towards deep-well, ultradeep well, and the transfer of the field such as Well-drilling, drilling well problems faced also comes more.Reaming hole technology as a kind of important means of process drilling well unusual condition also at development, not only can as the instrument of simple expansion well, also can to collapse the instrument on leakiness stratum as answering commute, can small clearance cementing be realized, reduce drilling cost.Reaming hole technology is exactly adopt reaming while drilling instrument to expand a kind of technology of well.Common reamer mainly comprises fixed-wing reamer and movable wing reaming hole cutter device two kinds, fixed-wing reamer is formed primarily of drill bit and reamer wing two parts, because reamer wing is larger than the diameter of drill bit, so the borehole diameter that the well got out by drill bit expands designing requirement to can be got out; Movable wing reamer has arm-type and block formula two kinds, and arm-type reamer is fixed on body by reaming hole body by bearing pin, and reaming hole body can do the rotation of certain angle around bearing pin, and after reaming hole body opens, diameter, through being greater than drill bit and reamer body, therefore can expand well; The reaming hole body of block formula reamer is wedge-like substantially, but reaming hole body is fixed on body, therefore can not rotate, but when needing the stratum of reaming hole, under the effect of hydraulic pressure, reaming hole body is pushed out body and implements reaming hole.
Such as, Authorization Notice No. is CN202100198 U is exactly a kind of block formula reamer; Authorization Notice No. is CN201843524 U, CN201778658 U and application publication number be for disclosed in the patent document of 101725322 A being exactly arm-type reamer.
Above-mentioned prior art can complete specific reaming hole task, but also exist following not enough: one, due in drilling process, the flexible of reamer wing easily causes drilling fluid to be easy to enter the joint component of reaming hole body, affect the flexibility ratio of wing, the reamer of fixed-wing receives the restriction of tool body wall thickness, therefore reaming hole size is less, and maximum self energy high-ranking military officer eye expands about 25%, can not satisfy the demand comprehensively.Two, suitably can not expand the diameter of reamer reaming hole as required, the limitation of use is larger.Three, hermetically-sealed construction is unreasonable, and in drilling process, in the telescopic process of reamer wing, drilling fluid easily enters the joint component of reaming hole body, affects the flexibility ratio of wing.
Summary of the invention
The object of the invention is to the problems referred to above overcoming the existence of existing reamer, a kind of Novel hole reaming device is provided, the present invention has contractility, the restriction of tool body wall thickness can not be subject to, reaming hole size is comparatively large, and hermetically-sealed construction is reasonable simultaneously, in drilling process, in the telescopic process of reamer wing, drilling fluid not easily enters the critical component of reaming hole body, can not affect the flexible of wing.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of reamer, comprise urceolus and wing mechanism, it is characterized in that: also comprise and to be arranged in urceolus and along urceolus driving shaft mechanism and the resetting-mechanism that makes driving shaft mechanism reset in axial sliding, described urceolus upper end is provided with the first hermetically-sealed construction with driving shaft mechanism outer wall fitted seal, lower end is provided with wing groove, the end of urceolus is provided with the second hermetically-sealed construction, wing organization establishes is in wing groove, driving shaft mechanism is provided with the expander driving wing mechanism to expand outwardly, and the inner chamber of driving shaft mechanism is communicated with wing groove.
Described wing mechanism comprises the operator wing and secondary wing, the described operator wing is identical two of structure, be symmetricly set in wing groove, secondary wing is identical two of structure, be symmetricly set in wing groove, and the operator wing and secondary wing are arranged on circumferentially same, the external diameter of circumference is identical with the external diameter of urceolus.
The described operator wing and secondary wing are provided with the expansion orbit coordinated with expander, and the expansion end of the operator wing is hook solid, and the expansion end of secondary wing is point of a knife shape.
Described expansion orbit comprises the straight section of indent and is the segmental arc of one with straight section, and before expanding outwardly, expander is positioned on the straight section of indent, and when expanding outwardly, expander moves on segmental arc.
The expansion end of the described operator wing is hook solid, and hook solid is trapezoidal, and trapezoidal upper base is outer end, and the expansion end of two operator wings is arranged in opposite directions.
The described operator wing and secondary wing are provided with stopper slot along extending out direction, and wing groove is fixedly connected with the locating part being arranged in stopper slot, described locating part is wing stop screw.
Described expander is the cam bit be fixedly installed on driving shaft mechanism, and described cam bit is four, coordinates respectively with the expansion orbit of the operator wing and secondary wing.
Described first hermetically-sealed construction comprises fixed cover and end cap, the upper end of urceolus is set to end cap groove, fixed cover and end cap are arranged in end cap groove, and fixed cover is fixed in end cap groove by end cap, fixed cover are provided with the fixed cover sealing ring coordinated with driving shaft mechanism outer wall.
Described second hermetically-sealed construction comprises plug and plug sealing ring, and plug is arranged on urceolus bottom, plug sealing ring be arranged on outer tube inner wall with plug fitted seal.
Described urceolus has multiple pin-and-hole, is provided with connecting pin in pin-and-hole, be provided with the fixing sliding sleeve coordinated with driving shaft mechanism in urceolus, fixing sliding sleeve is connected with urceolus by connecting pin.
Wing groove shape and the wing mechanism of the setting of described urceolus lower end are suitable, and be provided with the wing pin-and-hole be connected with wing mechanism in wing groove, the described operator wing is connected with wing groove respectively by wing pin, wing pin-and-hole with secondary wing.
The fixed axis that described driving shaft mechanism comprises power transmission shaft and is fixedly connected with power transmission shaft, power transmission shaft inner chamber and fixed axis inner space; One end that fixed axis is connected with power transmission shaft is provided with urceolus sealing ring, urceolus sealing ring and outer tube inner wall fitted seal, fixed cover sealing ring and power transmission shaft outer wall fitted seal.
One end that described power transmission shaft is connected with fixed axis is provided with passage, and passage is communicated with the space between urceolus and power transmission shaft, and space is between fixed cover sealing ring and urceolus sealing ring.
The other end of described fixed axis is provided with cam path, and expander is arranged in cam path; Be disposed with runner and fixed axis sealing ring between cam path and fixed axis end, fixed axis inner chamber and wing groove are by flow passage, fixed axis sealing ring and outer tube inner wall fitted seal.
Described resetting-mechanism comprises back-moving spring and spring groove, and spring groove is arranged in outer tube inner chamber, and back-moving spring is arranged in spring groove and coordinates with fixed axis.
Employing the invention has the advantages that:
One, the present invention includes and to be arranged in urceolus and along urceolus driving shaft mechanism and the resetting-mechanism that makes driving shaft mechanism reset in axial sliding, described urceolus upper end is provided with the first hermetically-sealed construction with driving shaft mechanism outer wall fitted seal, lower end is provided with wing groove, the end of urceolus is provided with the second hermetically-sealed construction, wing organization establishes is in wing groove, driving shaft mechanism is provided with the expander driving wing mechanism to expand outwardly, and the inner chamber of driving shaft mechanism is communicated with wing groove, by the first hermetically-sealed construction and the second hermetically-sealed construction, be sealed in after the present invention is assembled in urceolus, in drilling process, although wing mechanism carries out reaming hole operation outwards stretching out, but drilling fluid not easily enters the joint part of reamer inside, the flexibility ratio of wing mechanism can not be affected, and drive wing mechanism by the expander arranged separately, during enforcement reaming hole, arms is convenient to open, there is contractility, the restriction of tool body wall thickness can not be subject to as fixed reamer, therefore reaming hole size is larger, exceed the maximum reaming hole amplitude 25% of fixed reamer, can be good at satisfied on-the-spot needs.
Two, in the present invention, described wing mechanism comprises the operator wing and secondary wing, and the described operator wing is identical two of structure, is symmetricly set in wing groove, secondary wing is identical two of structure, be symmetricly set in wing groove, adopt this structure when reamer does not also arrive the position of reaming hole, the wing mechanism of setting draws in, only have and abovegroundly give certain pressure could to promote power transmission shaft downward, and push the operator wing and secondary wing open, start the work of reaming hole, can not drillng operation be affected; And adopt four wings, stressed evenly, be more conducive to the work carrying out reaming hole.
Three, in the present invention, the described operator wing and secondary wing are provided with the expansion orbit coordinated with expander, the expansion end of the operator wing is hook solid, and the expansion end of secondary wing is point of a knife shape, adopts this structure to be decide by expander the size that wing opens, thus when needs, as long as change corresponding expander, just suitably can expand the diameter of reamer reaming hole, it is convenient to change, hook solid coordinates with point of a knife shape carries out reaming hole work, improves reaming hole operating efficiency.
Four, in the present invention, described expansion orbit comprises the straight section of indent and is the segmental arc of one with straight section, before expanding outwardly, expander is positioned on the straight section of indent, ensure that the wing mechanism of setting draws in, when expanding outwardly, expander moves on segmental arc, expander coordinates with the expansion orbit of segmental arc and realizes reaming hole operation, is easier to normally carrying out of reaming hole work.
Five, in the present invention, the expansion end of the described operator wing is hook solid, and hook solid is trapezoidal, and trapezoidal upper base is outer end, and the expansion end of two operator wings is arranged in opposite directions, adopts this structure be convenient to the gathering of the operator wing and carry out reaming hole operation.
Six, in the present invention, the described operator wing and secondary wing are provided with stopper slot along extending out direction, wing groove is fixedly connected with the locating part being arranged in stopper slot, described locating part is wing stop screw, the scope that extends out that this structure is convenient to tool setting wing mechanism is adopted to control, the expansion that restriction wing is unlimited, makes the wing diameter after expansion limit within the limits prescribed.
Seven, in the present invention, described expander is the cam bit be fixedly installed on driving shaft mechanism, and described cam bit is four, coordinate with the expansion orbit of the operator wing and secondary wing respectively, adopt four cam bits to drive four wings respectively, more easily stressed, reliability is higher.
Eight, in the present invention; described first hermetically-sealed construction comprises fixed cover and end cap; the upper end of urceolus is set to end cap groove; fixed cover and end cap are arranged in end cap groove, and fixed cover is fixed in end cap groove by end cap, fixed cover are provided with the fixed cover sealing ring coordinated with driving shaft mechanism outer wall; under the protection of end cap; in conjunction with fixed cover sealing ring, further ensure drilling fluid in drilling process and not easily enter the joint part of reamer inside, the flexibility ratio of wing can not be affected.
Nine, in the present invention, described second hermetically-sealed construction comprises plug and plug sealing ring, and plug is arranged on urceolus bottom, plug sealing ring be arranged on outer tube inner wall with plug fitted seal, liquid is not flowed out by urceolus bottom, liquid is gone out from wing concentrated flow.
Ten, in the present invention, described urceolus has multiple pin-and-hole, connecting pin is provided with in pin-and-hole, the fixing sliding sleeve coordinated with driving shaft mechanism is provided with in urceolus, fixing sliding sleeve is connected with urceolus by connecting pin, by the fixing sliding sleeve arranged, driving shaft mechanism is slided up and down more stable, and there is the effect making driving shaft mechanism to urceolus transmitting torque.
11, in the present invention, wing groove shape and the wing mechanism of the setting of described urceolus lower end are suitable, the wing pin-and-hole be connected with wing mechanism is provided with in wing groove, the described operator wing is connected with wing groove respectively by wing pin, wing pin-and-hole with secondary wing, this structure makes wing under the drive of expander to when extending out, can rotate along wing pin, wing and expander are stress point, reaming hole operation is more stable, and wing is opened or draws in all to have living space, be convenient to before beginning reaming hole of going into the well, wing is received in wherein, need during reaming hole, to be also convenient to expansion.
12, in the present invention, the fixed axis that described driving shaft mechanism comprises power transmission shaft and is fixedly connected with power transmission shaft, power transmission shaft inner chamber and fixed axis inner space, adopt this structure, makes driving shaft mechanism precision higher, is convenient to processing; One end that fixed axis is connected with power transmission shaft is provided with urceolus sealing ring, urceolus sealing ring and outer tube inner wall fitted seal, and fixed cover sealing ring and power transmission shaft outer wall fitted seal, secondary seal ensure that liquid not easily enters, and driving shaft mechanism is normally slided.
13, in the present invention, one end that described power transmission shaft is connected with fixed axis is provided with passage, passage is communicated with the space between urceolus and power transmission shaft, and space is between fixed cover sealing ring and urceolus sealing ring, the passage arranged can make liquid pass through to enter space, reach and increase power transmission shaft top bearing area, power transmission shaft can be moved down faster, make the object that wing opens rapidly under expander drives.
14, in the present invention, the other end of described fixed axis is provided with cam path, and expander is arranged in cam path, expander and fixed axis is connected and fixed more reliable; Runner and fixed axis sealing ring is disposed with between cam path and fixed axis end; fixed axis inner chamber and wing groove pass through flow passage; when reaming hole creeps into; liquid in driving shaft mechanism inner chamber enters wing groove by runner; the effect of cleaning and cooling wing can be played; fixed axis sealing ring and outer tube inner wall fitted seal, can avoid liquid to enter fixed axis bottom, also would not affect the normal slip of driving shaft mechanism.
15, in the present invention, described resetting-mechanism comprises back-moving spring and spring groove, and spring groove is arranged in outer tube inner chamber, and back-moving spring is arranged in spring groove and coordinates with fixed axis, making back-moving spring stressed more stable when compressing, being convenient to the reset of driving shaft mechanism.
Accompanying drawing explanation
Fig. 1 is the general assembly schematic diagram of wing mechanism of the present invention when extending out
General assembly schematic diagram when Fig. 2 is wing mechanism of the present invention gathering
Fig. 3 is the structural representation of Fig. 1 or Fig. 2 axial rotation of the present invention 90 degree
Fig. 4 is the structural representation of driving shaft mechanism of the present invention
Fig. 5 is outer tube structure schematic diagram of the present invention
Fig. 6 is that the present invention operates the structure for amplifying schematic diagram of the wing
Fig. 7 is the structure for amplifying schematic diagram of the secondary wing of the present invention
Fig. 8 is the cam path structure for amplifying schematic diagram in Fig. 4
Fig. 9 is the radial section schematic diagram of Fig. 8
Figure 10 is B-B face structural representation in Fig. 1 of the present invention
Figure 11 be in Fig. 1 of the present invention lower end A to structural representation
Be labeled as in figure: 1, power transmission shaft; 2, end cap; 3, packing ring; 4, fixed cover; 5, fixed cover sealing ring; 6, urceolus sealing ring; 7, urceolus; 8, fixing sliding sleeve; 9, connecting pin; 10, back-moving spring; 11, fixed axis; 12, plug sealing ring; 13, cam bit; 14, wing pin; 15, the operator wing; 16, secondary wing; 17, wing stop screw; 18, stop screw packing ring; 19, stopper slot; 20, cam bit screw; 21, fixed axis sealing ring; 22, plug; 23, expansion orbit; 24, spring groove; 25, pin-and-hole; 26, wing groove; 27, wing pin-and-hole; 28, end cap groove; 29, runner; 30, cam path, 31, passage.
Detailed description of the invention
Embodiment 1
A kind of reamer, comprise urceolus 7 and wing mechanism, also comprise and to be arranged in urceolus 7 and along urceolus 7 driving shaft mechanism and the resetting-mechanism that makes driving shaft mechanism reset in axial sliding, described urceolus 7 upper end is provided with the first hermetically-sealed construction with driving shaft mechanism outer wall fitted seal, lower end is provided with wing groove 26, the end of urceolus 7 is provided with the second hermetically-sealed construction, wing organization establishes is in wing groove 26, driving shaft mechanism is provided with the expander driving wing mechanism to expand outwardly, and the inner chamber of driving shaft mechanism is communicated with wing groove 26.
In the present invention, described wing mechanism comprises the operator wing 15 and secondary wing 16, the described operator wing 15 is identical two of structure, be symmetricly set in wing groove 26, secondary wing 16 is identical two of structure, be symmetricly set in wing groove 26, and the operator wing 15 and secondary wing 16 are arranged on circumferentially same, the external diameter of circumference is identical with the external diameter of urceolus 7.The quantity of the operator wing 15 and secondary wing 16 is not limited thereto, but as best mode.
In the present invention, the described operator wing 15 and secondary wing 16 are provided with the expansion orbit 23 coordinated with expander, but are not limited to this mode of expansion orbit, other structure of the prior art also can be adopted to realize; The expansion end of the operator wing 15 be hook solid, and the expansion end of secondary wing 16 is point of a knife shape, the structure of the operate wing 15 and secondary wing 16 this be best mode, also can adopt similar wing structure of the prior art.
Further, described expansion orbit 23 comprises the straight section of indent and is the segmental arc of one with straight section, and before expanding outwardly, expander is positioned on the straight section of indent, and when expanding outwardly, expander moves on segmental arc.
In the present invention, the expansion end of the described operator wing 15 is hook solid, and hook solid is trapezoidal, and trapezoidal upper base is outer end, and the expansion end of two operator wings is arranged in opposite directions, but is not limited thereto shape.
In the present invention, the described operator wing 15 and secondary wing 16 are provided with stopper slot 19 along extending out direction, wing groove 26 is fixedly connected with the locating part being arranged in stopper slot 19, locating part coordinates the expansion ratio to wing extends out to limit with stopper slot 19, and described locating part is wing stop screw 17.
In the present invention, described expander is the cam bit 13 be fixedly installed on driving shaft mechanism, and described cam bit 13 is four, and coordinate with the expansion orbit 23 of the operator wing 15 and secondary wing 16 respectively, expander is also confined to cam bit, and quantity is also not limited to four.
In the present invention, described first hermetically-sealed construction comprises fixed cover 4 and end cap 2, the upper end of urceolus 7 is set to end cap groove 28, fixed cover 4 and end cap 2 are arranged in end cap groove 28, fixed cover 4 is fixed in end cap groove 28 by end cap 2, fixed cover 4 is provided with the fixed cover sealing ring 5 coordinated with driving shaft mechanism outer wall.
In the present invention, described second hermetically-sealed construction comprises plug 22 and plug sealing ring 12, and plug 22 is arranged on urceolus 7 bottom, plug sealing ring 12 be arranged on urceolus 7 inwall with plug 22 fitted seal.
In the present invention, described urceolus 7 has multiple pin-and-hole 25, is provided with connecting pin 9 in pin-and-hole 25, be provided with the fixing sliding sleeve 8 coordinated with driving shaft mechanism in urceolus 7, fixing sliding sleeve 8 is connected with urceolus 7 by connecting pin 9.
In the present invention, wing groove 26 shape and the wing mechanism of the setting of described urceolus 7 lower end are suitable, be provided with the wing pin-and-hole 27 be connected with wing mechanism in wing groove 26, the described operator wing 15 is connected with wing groove 26 respectively by wing pin 14, wing pin-and-hole 27 with secondary wing 16.
In the present invention, the fixed axis 11 that described driving shaft mechanism comprises power transmission shaft 1 and is fixedly connected with power transmission shaft 1, power transmission shaft 1 inner chamber and fixed axis 11 inner space; One end that fixed axis 11 is connected with power transmission shaft 1 is provided with urceolus sealing ring 6, urceolus sealing ring 6 and urceolus 7 inwall fitted seal, fixed cover sealing ring 5 and power transmission shaft 1 outer wall fitted seal.
In the present invention, one end that described power transmission shaft 1 is connected with fixed axis 11 is provided with passage 31, and passage 31 is communicated with the space between urceolus 7 and power transmission shaft 1, and space is between fixed cover sealing ring 5 and urceolus sealing ring 6.
In the present invention, the other end of described fixed axis 11 is provided with cam path 30, and expander is arranged in cam path 30; Be provided with runner 29 and fixed axis sealing ring 21 between cam path 30 and fixed axis 11 end, fixed axis 11 inner chamber is communicated with by runner 29 with wing groove 26, fixed axis sealing ring 21 and urceolus 7 inwall fitted seal.
In the present invention, described resetting-mechanism comprises back-moving spring 10 and spring groove 24, and spring groove 24 is arranged in urceolus 7 inner chamber, and back-moving spring 10 is arranged in spring groove 24 and coordinates with fixed axis 11.
Operating principle of the present invention is: when use, upper end of the present invention is connected on drilling tool, G.I.H, after arrival needs the well section of reaming hole, slush pump increases discharge capacity, down-hole pressure of spraining causes pump pressure to raise, aboveground pressure promotes power transmission shaft 1 and moves down, power transmission shaft 1 compression reseting spring 10 continues descending, be arranged on that the cam bit 13 of power transmission shaft 1 lower end is descending to be contacted with the segmental arc of the expansion orbit 23 of the operator wing 15 and secondary wing 16 respectively, due to the operator wing 15, the internal diameter of the circumference that secondary wing 16 is formed is less than cam bit 13 external diameter, be not enough to cam bit 13 is passed through, so cam bit 13 promotes the operator wing 15 and secondary wing 16 is expanded outward simultaneously, the operator wing 15 and secondary wing 16 are opened, under the drive of rig, continue to creep into, because the operator wing outwards opens, increase the diameter of reamer, therefore the diameter of well just can be expanded when creeping into, when needing the diameter expanding well further, the present invention is taken out ground, change larger cam bit 13, G.I.H again, and repeat the work progress of above-mentioned reaming hole, because the model of cam bit 13 is larger, therefore when pushing the operator wing 15 and secondary wing 16 open, the opening width of the operator wing 15 and secondary wing 16 will be larger, therefore the diameter cutting well will be larger, therefore the technique effect expanding well further can be played.
Embodiment 2
Urceolus 7 is cylindrical structure, there are wing groove 26 and the wing pin-and-hole 27 being connected the operator wing 15 and secondary wing 16 in cylindrical lower end, the operator wing 15 and secondary wing 16 are connected in wing groove 26 by wing pin-and-hole 27, there is end cap groove 28 rear end of urceolus 7, end cap 2 after assembling is arranged in end cap groove 28, there is fixed cover 4 in the front end of end cap 2, between fixed cover 4 and power transmission shaft 1, be provided with fixed cover sealing ring 5; Pin-and-hole 25 and spring groove 24 is provided with, after assembling the present invention, by pin-and-hole 25 by connecting pin 9 fixed outer cylinder 7 and fixing sliding sleeve 8 in the stage casing of urceolus 7; The lower end of power transmission shaft 1 and reaming hole end are provided with cam path 30 and runner 29, cam path 30 is for laying cam bit 13, power transmission shaft 1 is connected with fixed axis 11, the cylindrical of fixed axis 11 is all directions structure, have fixing sliding sleeve 8 in the outer surface cover of fixed axis 11, fixing sliding sleeve 8 is the shape in all directions in cylindrical, and the outer all directions structure of fixed axis 11 matches with the interior all directions structure of fixing sliding sleeve 8, the all directions structure arranged can play and slide up and down, and makes power transmission shaft 1 to the effect of urceolus 7 transmitting torque.
The passage 31 that power transmission shaft is arranged can make liquid pass through, and can play the effect that enlarging section is long-pending, reaches the area increasing power transmission shaft 1 upper pressure, promotes power transmission shaft 1, and cam bit 13 is moved downward, and pushes the operator wing 15, secondary wing 16 open; The runner 29 of lower end, when reaming hole creeps into, can play the effect of cleaning and cooling wing; Are spring grooves 24 in the lower end of fixed axis 11, are provided with back-moving spring 10; Fixing sliding sleeve 8 body is provided with fixed pin holes, for being fixedly connected with of urceolus 7; Four faces of the lower end of power transmission shaft 1 are fixed with respectively the expansion orbit of the corresponding wing of four cam bits, 13, cam bit 13 by cam bit screw 20.
Wing mechanism is made up of the operate wing 15 and secondary wing 16, the front end of the operator wing 15 is hook type shape, curved contoured portion has backward trapezoidal, owing to being symmetrical arranged two operator wings 15, so, the trapezium structure arranged is when gathering two the operator wing 15, and two trapezium structures can hold mutually, reach the operator wing diameter after gathering completely consistent with urceolus.The front end of secondary wing 16 is straight pointed shape, straight pointed shape also has backward trapezoidal, owing to being symmetrical arranged two secondary wings 16, so, the trapezium structure arranged is when gathering two secondary wings 16, two trapezium structures also can hold mutually, reach the secondary wing diameter after gathering completely consistent with urceolus.The structure of drawing in has a lot, and therefore, the structure of wing mechanism is not limited thereto.The operator wing 15 and secondary wing 16 are provided with expansion orbit 23, wing pin 14 through the pin-and-hole of the operator wing 15 and wing pin-and-hole 27, the fixing operator wing 15, secondary wing 16 carries out same fixing; The two panels operator wing 15 symmetry is installed, and secondary wing 16 symmetry of two panels is installed, and installs the later operator wing 15 when drawing in, the hook portion of the curved contoured portion in its front end symmetrical wing of trapezoidal mutual income backward; Major and minor wing is also provided with stopper slot 19, wing stop screw 17 is connected with in stopper slot, wing stop screw 17 and stop screw packing ring 18 make wing limited block fix, carry out spacing to the operator wing 15 and secondary wing 16, the expansion that restriction wing is unlimited, makes the wing after expansion be limited in the diameter range of regulation.
Embodiment 3
Assembling sequence of the present invention is:
Load back-moving spring 10 in urceolus 7 internal thread direction, then put into fixing sliding sleeve 8, fixing sliding sleeve 8 is the shape in all directions in cylindrical, and the outer all directions structure of fixed axis 11 matches with the interior all directions structure of fixing sliding sleeve 8; Power transmission shaft 1 is installed urceolus sealing ring 6, after fixed cover 4 loads onto fixed cover sealing ring 5, power transmission shaft 1 is put into urceolus 7 from urceolus 7 internal thread direction, urceolus 7 internal thread end face places packing ring 3, put into end cap 2 again, end cap 2 and urceolus 7, to be threaded, then put into pin-and-hole 25 connecting pin 9.
Four cam bits 13 are installed in the cam path 30 on four faces of the lower end of power transmission shaft 1 respectively, then by cam bit screw 20, cam bit 13 are connected with the pin-and-hole in cam path 30; Plug 22 and power transmission shaft 1 are threaded connection.
Plug 22 is installed on urceolus 7, and plug 22 and urceolus 7 are threaded connection.
Wing pin 14 is passed pin-and-hole and the wing pin-and-hole 27 of the operator wing 15, two symmetrically arranged operator wings 15 are fixed on the lower end of urceolus 7, two symmetrical secondary wings 16 installed also are fixedly connected with in the same way.
Wing stop screw 17 and stop screw packing ring 18 are installed in the wing groove 26 of urceolus, carry out opening width spacing to the operator wing 15 and secondary wing 16.
Claims (5)
1. a reamer, comprise urceolus (7) and wing mechanism, it is characterized in that: also comprise and to be arranged in urceolus (7) and along urceolus (7) driving shaft mechanism and the resetting-mechanism that makes driving shaft mechanism reset in axial sliding, described urceolus (7) upper end is provided with the first hermetically-sealed construction with driving shaft mechanism outer wall fitted seal, lower end is provided with wing groove (26), the end of urceolus (7) is provided with the second hermetically-sealed construction, wing organization establishes is in wing groove (26), driving shaft mechanism is provided with the expander driving wing mechanism to expand outwardly, and the inner chamber of driving shaft mechanism is communicated with wing groove (26),
Described wing mechanism comprises the operator wing (15) and secondary wing (16), the described operator wing (15) is identical two of structure, be symmetricly set in wing groove (26), secondary wing (16) is identical two of structure, be symmetricly set in wing groove (26), and the operator wing (15) and secondary wing (16) are arranged on circumferentially same, the external diameter of circumference is identical with the external diameter of urceolus (7);
The described operator wing (15) and secondary wing (16) are provided with the expansion orbit (23) coordinated with expander, and the expansion end of the operator wing (15) is hook solid, and the expansion end of secondary wing is point of a knife shape;
The expansion end of the described operator wing is hook solid, and hook solid is trapezoidal, and trapezoidal upper base is outer end, and the expansion end of two operator wings is arranged in opposite directions;
Described expansion orbit (23) comprises the straight section of indent and is the segmental arc of one with straight section, and before expanding outwardly, expander is positioned on the straight section of indent, and when expanding outwardly, expander moves on segmental arc;
Described expander is the cam bit (13) be fixedly installed on driving shaft mechanism, and described cam bit (13) is four, coordinates respectively with the expansion orbit (23) of the operator wing (15) and secondary wing (16);
Described first hermetically-sealed construction comprises fixed cover (4) and end cap (2), the upper end of urceolus (7) is set to end cap groove (28), fixed cover (4) and end cap (2) are arranged in end cap groove (28), fixed cover (4) is fixed in end cap groove (28) by end cap (2), fixed cover (4) is provided with the fixed cover sealing ring (5) coordinated with driving shaft mechanism outer wall.
2. reamer according to claim 1, it is characterized in that: described urceolus (7) has multiple pin-and-hole (25), connecting pin (9) is provided with in pin-and-hole (25), be provided with the fixing sliding sleeve (8) coordinated with driving shaft mechanism in urceolus (7), fixing sliding sleeve (8) is connected with urceolus (7) by connecting pin (9).
3. reamer according to claim 1 and 2, is characterized in that: the fixed axis (11) that described driving shaft mechanism comprises power transmission shaft (1) and is fixedly connected with power transmission shaft (1), power transmission shaft (1) inner chamber and fixed axis (11) inner space; One end that fixed axis (11) is connected with power transmission shaft (1) is provided with urceolus sealing ring (6), urceolus sealing ring (6) and urceolus (7) inwall fitted seal, fixed cover sealing ring (5) and power transmission shaft (1) outer wall fitted seal.
4. reamer according to claim 3, it is characterized in that: one end that described power transmission shaft (1) is connected with fixed axis (11) is provided with passage (31), passage (31) is communicated with the space between urceolus (7) and power transmission shaft (1), and space is positioned between fixed cover sealing ring (5) and urceolus sealing ring (6).
5. reamer according to claim 4, is characterized in that: the other end of described fixed axis (11) is provided with cam path (30), and expander is arranged in cam path (30); Be provided with runner (29) between cam path (30) and fixed axis (11) end, fixed axis (11) inner chamber is communicated with by runner (29) with wing groove (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502411.1A CN102943625B (en) | 2012-11-30 | 2012-11-30 | Hole expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502411.1A CN102943625B (en) | 2012-11-30 | 2012-11-30 | Hole expander |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102943625A CN102943625A (en) | 2013-02-27 |
| CN102943625B true CN102943625B (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210502411.1A Active CN102943625B (en) | 2012-11-30 | 2012-11-30 | Hole expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102943625B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612590A (en) * | 2015-01-31 | 2015-05-13 | 成都科盛石油科技有限公司 | Detachable six-blade drill bit for oil drilling |
| CN110238136B (en) * | 2019-06-19 | 2023-09-05 | 宜昌市燕狮科技开发有限责任公司 | Floating reamer and use method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3224507A (en) * | 1962-09-07 | 1965-12-21 | Servco Co | Expansible subsurface well bore apparatus |
| JP2001026923A (en) * | 1999-07-15 | 2001-01-30 | Tenox Corp | Multistep expansion and shrinkage head for soil improvement machine |
| CN201778658U (en) * | 2010-08-05 | 2011-03-30 | 中国石油天然气集团公司 | Reaming-while-drilling device used for casing drilling |
| CN1816679B (en) * | 2003-04-30 | 2011-06-01 | 安德格治有限公司 | Downhole tool having radially extendable members |
| CN202970484U (en) * | 2012-11-30 | 2013-06-05 | 中国石油集团川庆钻探工程有限公司 | Hole expander |
-
2012
- 2012-11-30 CN CN201210502411.1A patent/CN102943625B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3224507A (en) * | 1962-09-07 | 1965-12-21 | Servco Co | Expansible subsurface well bore apparatus |
| JP2001026923A (en) * | 1999-07-15 | 2001-01-30 | Tenox Corp | Multistep expansion and shrinkage head for soil improvement machine |
| CN1816679B (en) * | 2003-04-30 | 2011-06-01 | 安德格治有限公司 | Downhole tool having radially extendable members |
| CN201778658U (en) * | 2010-08-05 | 2011-03-30 | 中国石油天然气集团公司 | Reaming-while-drilling device used for casing drilling |
| CN202970484U (en) * | 2012-11-30 | 2013-06-05 | 中国石油集团川庆钻探工程有限公司 | Hole expander |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102943625A (en) | 2013-02-27 |
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Effective date of registration: 20200911 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Co-patentee after: CNPC Chuanqing Drilling Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: The 1 section of No. 3 company Chuanqing Drilling Technology Information Office Chenghua District Green Road 610051 Chengdu City, Sichuan Province Patentee before: CNPC Chuanqing Drilling Engineering Co.,Ltd. |
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