CN102943625A - Reamer - Google Patents

Reamer Download PDF

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Publication number
CN102943625A
CN102943625A CN2012105024111A CN201210502411A CN102943625A CN 102943625 A CN102943625 A CN 102943625A CN 2012105024111 A CN2012105024111 A CN 2012105024111A CN 201210502411 A CN201210502411 A CN 201210502411A CN 102943625 A CN102943625 A CN 102943625A
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CN
China
Prior art keywords
wing
urceolus
reamer
groove
transmission shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2012105024111A
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Chinese (zh)
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CN102943625B (en
Inventor
陈立
刘彬
徐文
何超
胡畔
邓元洲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
CNPC Chuanqing Drilling Engineering Co Ltd
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Publication date
Application filed by CNPC Chuanqing Drilling Engineering Co Ltd filed Critical CNPC Chuanqing Drilling Engineering Co Ltd
Priority to CN201210502411.1A priority Critical patent/CN102943625B/en
Publication of CN102943625A publication Critical patent/CN102943625A/en
Application granted granted Critical
Publication of CN102943625B publication Critical patent/CN102943625B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention discloses a reamer. The reamer comprises an outer cylinder, a blade mechanism, a transmission shaft mechanism and a reset mechanism, wherein the transmission shaft mechanism is arranged in the outer cylinder and axially slides along the outer cylinder, and 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 cylinder, a blade groove is formed in the lower end of the outer cylinder, a second sealing structure is arranged at the end part of the outer cylinder, and the blade mechanism is arranged in the blade groove; and 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 blade groove. The reamer has contractility and cannot be limited by the wall thickness of a tool body, the reaming size is large, and meanwhile, the sealing structure is reasonable; and in the drilling process, the drilling fluid hardly enters key components of the reamer in the processes of expansion and contraction of a reaming blade, and the flexibility of the blade cannot be influenced.

Description

Reamer
Technical field
The present invention relates to a kind of underreamer instrument of drilling well, just relate to specifically a kind of reamer of reaming hole operation of drilling process, be used for the 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 to be lowered to the convenience of sleeve pipe, perhaps when the brill chance was easy to the stratum of undergauge, the well that is drilled to usually had in various degree undergauge, in this case, just well need to be expanded as the larger well of diameter.Along with oil/gas drilling towards deep-well, ultradeep well, and the field such as Well-drilling shifts, the problem that drilling well faces is also come more.The reaming hole technology also at development, not only can be used as the instrument of simple expansion well as a kind of important means of processing the drilling well unusual condition, also can be used as to answer the collapse instrument on leakiness stratum of commute, can realize small clearance cementing, reduces drilling cost.The reaming hole technology is exactly to adopt a kind of technology that enlarges well with the brill hole reaming tool.Common reamer mainly comprises two kinds of fixed-wing reamer and movable wing reaming hole cutter devices, the fixed-wing reamer mainly is made of drill bit and reamer wing two parts, because reamer wing is larger than the diameter of drill bit, so can get out the borehole diameter that the well that drill bit is got out expands designing requirement to; The movable wing reamer has two kinds of arm-type and piece formulas, and arm-type reamer is that the reaming hole body is fixed on the body by bearing pin, and the reaming hole body can be done around bearing pin the rotation of certain angle, and after the reaming hole body opened, therefore diameter can enlarge well through greater than drill bit and reamer body; The reaming hole body of piece formula reamer is wedge-like substantially, but the reaming hole body is fixed on the body, therefore can not rotate, but when needing the stratum of reaming hole, under the effect of hydraulic pressure, the reaming hole body is pushed out body and implements reaming hole.
For example, notice of authorization number is exactly a kind of formula reamer for CN202100198 U; Notice of authorization number for CN201843524 U, CN201778658 U and application publication number be the patent document of 101725322 A disclosed be exactly arm-type reamer.
Above-mentioned prior art can be finished specific reaming hole task, but also there is following deficiency: one, because in the 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 is received the restriction of tool body wall thickness, therefore the reaming hole size is less, and self energy high-ranking military officer eye enlarges about 25% at most, can not satisfy the demand comprehensively.Two, can not suitably enlarge as required the diameter of reamer reaming hole, the limitation of use is larger.Three, hermetically-sealed construction is unreasonable, and in drilling process, drilling fluid easily enters the joint component of reaming hole body in the telescopic process of reamer wing, affects the flexibility ratio of wing.
Summary of the invention
The object of the invention is to overcome the problems referred to above that existing reamer exists, a kind of Novel hole reaming device is provided, the present invention has contractility, can not be subject to the restriction of tool body wall thickness, the reaming hole size is larger, and hermetically-sealed construction is reasonable simultaneously, in drilling process, drilling fluid is difficult for entering the critical component of reaming hole body in the telescopic process of reamer wing, 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 being arranged in the urceolus and along urceolus in axial sliding driving shaft mechanism and resetting-mechanism that driving shaft mechanism is resetted, described urceolus upper end is provided with the first hermetically-sealed construction with driving shaft mechanism outer wall fitted seal, the lower end is provided with the wing groove, the end of urceolus is provided with the second hermetically-sealed construction, wing mechanism is arranged in the wing groove, be provided with on the driving shaft mechanism and drive the expander that wing mechanism expands outwardly, and the inner chamber of driving shaft mechanism is communicated with the 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 the wing groove, secondary wing is identical two of structure, be symmetricly set in the wing groove, and the operator wing and secondary wing are arranged on the same circumference, and the external diameter of circumference is identical with the external diameter of urceolus.
Be provided with the expansion orbit that cooperates with expander on the described operator wing and the secondary wing, the expansion end of the operator wing is hook solid, and the expansion end of secondary wing is the 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 at segmental arc.
The expansion end of the described operator wing is hook solid, and it is trapezoidal that hook solid is, and trapezoidal upper base is the outer end, and the expansion end of two operator wings arranges in opposite directions.
Be provided with stopper slot along extending out direction on the described operator wing and the secondary wing, be fixedly connected with the locating part that is arranged in stopper slot on the wing groove, described locating part is the wing stop screw.
Described expander is the cam bit that is fixedly installed on the driving shaft mechanism, and described cam bit is four, and the expansion orbit with the operator wing and secondary wing cooperates respectively.
Described the first hermetically-sealed construction comprises fixed cover and end cap, the upper end of urceolus is set to the end cap groove, fixed cover and end cap are arranged in the end cap groove, and fixed cover is fixed in the end cap groove by end cap, are provided with the fixed cover sealing ring that cooperates with the driving shaft mechanism outer wall on the fixed cover.
Described the second hermetically-sealed construction comprises plug and plug sealing ring, and plug is arranged on the urceolus bottom, and the plug sealing ring is arranged on the outer tube inner wall and the plug fitted seal.
Have a plurality of pin-and-holes on the described urceolus, be provided with connecting pin in the pin-and-hole, be provided with the fixedly sliding sleeve that cooperates with driving shaft mechanism in the urceolus, fixedly sliding sleeve is connected with urceolus by connecting pin.
Wing groove shape and wing mechanism that described urceolus lower end arranges are suitable, are provided with the wing pin-and-hole that is connected with wing mechanism in the wing groove, the described operator wing be connected wing and be connected with the wing groove by wing pin, wing pin-and-hole respectively.
Described driving shaft mechanism comprises power transmission shaft and the fixed axis that is fixedly connected with power transmission shaft, and the power transmission shaft inner chamber is communicated with the fixed axis inner chamber; The end that fixed axis is connected with power transmission shaft is provided with the 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.
The end that described power transmission shaft is connected with fixed axis is provided with passage, and passage is communicated with space between urceolus and the power transmission shaft, and the 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 the cam path; Be disposed with runner and fixed axis sealing ring between cam path and the fixed axis end, the fixed axis inner chamber is communicated with by runner with the wing groove, 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 the outer tube inner chamber, and back-moving spring is arranged in the spring groove and cooperates with fixed axis.
Employing the invention has the advantages that:
One, the present invention includes and be arranged in the urceolus and along urceolus in axial sliding driving shaft mechanism and resetting-mechanism that driving shaft mechanism is resetted, described urceolus upper end is provided with the first hermetically-sealed construction with driving shaft mechanism outer wall fitted seal, the lower end is provided with the wing groove, the end of urceolus is provided with the second hermetically-sealed construction, wing mechanism is arranged in the wing groove, be provided with on the driving shaft mechanism and drive the expander that wing mechanism expands outwardly, and the inner chamber of driving shaft mechanism is communicated with the wing groove, by the first hermetically-sealed construction and the second hermetically-sealed construction, after being assembled, the present invention is sealed in the urceolus, in drilling process, although wing mechanism carries out the reaming hole operation outwards stretching out, but drilling fluid is difficult for entering the joint part of reamer inside, can not affect the flexibility ratio of wing mechanism; And drive wing mechanism by the expander that arranges separately, the reaming hole arm is convenient to open when implementing reaming hole, has contractility, can as fixed reamer, not be subject to the restriction of tool body wall thickness, therefore the reaming hole size is larger, surpass the maximum reaming hole amplitude 25% of fixed reamer, can be good at satisfying on-the-spot needs.
Two, among 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 the wing groove, secondary wing is identical two of structure, be symmetricly set in the 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, the work of beginning reaming hole can not affect drillng operation; And adopt four wings, stressed more even, more be conducive to carry out the work of reaming hole.
Three, among the present invention, be provided with the expansion orbit that cooperates with expander on the described operator wing and the secondary wing, the expansion end of the operator wing is hook solid, and the expansion end of secondary wing is the point of a knife shape, and adopting this structure is to decide size that wing opens by expander, thereby in needs, as long as change corresponding expander, just can suitably enlarge the diameter of reamer reaming hole, it is convenient to change, hook solid cooperates with the point of a knife shape carries out reaming hole work, has improved the reaming hole operating efficiency.
Four, among 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, the wing mechanism that has guaranteed setting draws in, and when expanding outwardly, expander moves at segmental arc, expander cooperates with the expansion orbit of segmental arc realizes the reaming hole operation, is easier to normally carrying out of reaming hole work.
Five, among the present invention, the expansion end of the described operator wing is hook solid, and it is trapezoidal that hook solid is, and trapezoidal upper base is the outer end, and the expansion end of two operator wings arranges in opposite directions, adopt this structure be convenient to operate the wing gathering and carry out the reaming hole operation.
Six, among the present invention, be provided with stopper slot along extending out direction on the described operator wing and the secondary wing, be fixedly connected with the locating part that is arranged in stopper slot on the wing groove, described locating part is the wing stop screw, adopt the scope that extends out that this structure is convenient to the tool setting wing mechanism to control, restriction wing unlimited expansion, make after the expansion the wing diameter restrictions within the limits prescribed.
Seven, among the present invention, described expander is the cam bit that is fixedly installed on the driving shaft mechanism, and described cam bit is four, expansion orbit with the operator wing and secondary wing cooperates respectively, adopt four cam bits to drive respectively four wings, easier to be stressed, reliability is higher.
Eight, among the present invention; described the first hermetically-sealed construction comprises fixed cover and end cap; the upper end of urceolus is set to the end cap groove; fixed cover and end cap are arranged in the end cap groove, and fixed cover is fixed in the end cap groove by end cap, are provided with the fixed cover sealing ring that cooperates with the driving shaft mechanism outer wall on the fixed cover; under the protection of end cap; in conjunction with the fixed cover sealing ring, guaranteed that further in drilling process drilling fluid is difficult for entering the joint part of reamer inside, can not affect the flexibility ratio of wing.
Nine, among the present invention, described the second hermetically-sealed construction comprises plug and plug sealing ring, and plug is arranged on the urceolus bottom, and the plug sealing ring is arranged on the outer tube inner wall and the plug fitted seal, liquid can not be flowed out by the urceolus bottom, liquid can be gone out from the wing concentrated flow.
Ten, among the present invention, have a plurality of pin-and-holes on the described urceolus, be provided with connecting pin in the pin-and-hole, be provided with the fixedly sliding sleeve that cooperates with driving shaft mechanism in the urceolus, fixedly sliding sleeve is connected with urceolus by connecting pin, by the fixedly sliding sleeve that arranges driving shaft mechanism is slided up and down more stable, and have and make driving shaft mechanism to the effect of urceolus transmitting torque.
11, among the present invention, wing groove shape and wing mechanism that described urceolus lower end arranges are suitable, be provided with the wing pin-and-hole that is connected with wing mechanism in the wing groove, the described operator wing be connected wing and be connected with the wing groove by wing pin, wing pin-and-hole respectively, this structure make wing under the drive of expander when extending out, can rotate along the wing pin, wing and expander are stress point, the reaming hole operation is more stable, and wing is opened or draw in all and have living space, be convenient to before the beginning reaming hole of going into the well, wing is received in wherein, also be convenient to expansion when needing reaming hole.
12, among the present invention, described driving shaft mechanism comprises power transmission shaft and the fixed axis that is fixedly connected with power transmission shaft, and the power transmission shaft inner chamber is communicated with the fixed axis inner chamber, adopts this structure, makes the driving shaft mechanism precision higher, is convenient to processing; The end that fixed axis is connected with power transmission shaft is provided with the 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 has guaranteed that liquid is difficult for entering, and driving shaft mechanism can normally be slided.
13, among the present invention, the end that described power transmission shaft is connected with fixed axis is provided with passage, passage is communicated with space between urceolus and the power transmission shaft, and the space is between fixed cover sealing ring and urceolus sealing ring, the passage that arranges can make liquid by entering the space, reach increase power transmission shaft top bearing area, power transmission shaft can be moved down faster, the purpose that wing is opened rapidly under expander drives.
14, among the present invention, the other end of described fixed axis is provided with cam path, and expander is arranged in the cam path, expander and fixed axis is connected and fixed more reliable; Be disposed with runner and fixed axis sealing ring between cam path and the fixed axis end; the fixed axis inner chamber is communicated with by runner with the wing groove; when reaming hole creeps into; liquid in the driving shaft mechanism inner chamber enters the wing groove by runner; can play the effect of cleaning and cooling off wing; fixed axis sealing ring and outer tube inner wall fitted seal can avoid liquid to enter the fixed axis bottom, also just can not affect the normal slip of driving shaft mechanism.
15, among the present invention, described resetting-mechanism comprises back-moving spring and spring groove, and spring groove is arranged in the outer tube inner chamber, and back-moving spring is arranged in the spring groove and cooperates with fixed axis, makes back-moving spring stressed more stable when compression, is convenient to resetting of driving shaft mechanism.
Description of drawings
Fig. 1 is the general assembly schematic diagram of wing of the present invention mechanism when extending out
Fig. 2 is the general assembly schematic diagram of wing of the present invention mechanism when drawing in
Fig. 3 is the structural representation of Fig. 1 of the present invention or Fig. 2 axial rotation 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 the operate structure for amplifying schematic diagram of the wing of the present invention
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 among Fig. 4
Fig. 9 is the radial section schematic diagram of Fig. 8
Figure 10 is B-B face structural representation among Fig. 1 of the present invention
Figure 11 be among Fig. 1 of the present invention lower end A to structural representation
Be labeled as among the 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.
The specific embodiment
Embodiment 1
A kind of reamer, comprise urceolus 7 and wing mechanism, also comprise and being arranged in the urceolus 7 and along urceolus 7 in axial sliding driving shaft mechanism and resetting-mechanism that driving shaft mechanism is resetted, described urceolus 7 upper ends are provided with the first hermetically-sealed construction with driving shaft mechanism outer wall fitted seal, the lower end is provided with wing groove 26, the end of urceolus 7 is provided with the second hermetically-sealed construction, wing mechanism is arranged in the wing groove 26, be provided with on the driving shaft mechanism and drive the expander that wing mechanism expands outwardly, and the inner chamber of driving shaft mechanism is communicated with wing groove 26.
Among 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 the wing groove 26, secondary wing 16 is identical two of structure, be symmetricly set in the wing groove 26, and the operator wing 15 and secondary wing 16 be arranged on the same circumference, 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 to this, but as best mode.
Among the present invention, be provided with the expansion orbit 23 that cooperates with expander on the described operator wing 15 and the secondary wing 16, but be not limited to this mode of expansion orbit, also can adopt other structure of the prior art to realize; The expansion end of the operator wing 15 is hook solid, and the expansion end of secondary wing 16 is the point of a knife shape, and this is best mode for the structure of the operator wing 15 and secondary wing 16, 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 at segmental arc.
Among the present invention, the expansion end of the described operator wing 15 is hook solid, and it is trapezoidal that hook solid is, and trapezoidal upper base is the outer end, and the expansion end of two operator wings arranges in opposite directions, but is not limited to this shape.
Among the present invention, be provided with stopper slot 19 along extending out direction on the described operator wing 15 and the secondary wing 16, be fixedly connected with the locating part that is arranged in stopper slot 19 on the wing groove 26, locating part cooperates the expansion ratio that wing is extended out to limit with stopper slot 19, and described locating part is wing stop screw 17.
Among the present invention, described expander is the cam bit 13 that is fixedly installed on the driving shaft mechanism, and described cam bit 13 is four, and the expansion orbit 23 with the operator wing 15 and secondary wing 16 cooperates respectively, and expander also is confined to cam bit, and quantity also is not limited to four.
Among the present invention, described the 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 the end cap groove 28, fixed cover 4 is fixed in the end cap groove 28 by end cap 2, is provided with the fixed cover sealing ring 5 that cooperates with the driving shaft mechanism outer wall on the fixed cover 4.
Among the present invention, described the second hermetically-sealed construction comprises plug 22 and plug sealing ring 12, and plug 22 is arranged on urceolus 7 bottoms, and plug sealing ring 12 is arranged on urceolus 7 inwalls and plug 22 fitted seal.
Among the present invention, have a plurality of pin-and-holes 25 on the described urceolus 7, be provided with connecting pin 9 in the pin-and-hole 25, be provided with the fixedly sliding sleeve 8 that cooperates with driving shaft mechanism in the urceolus 7, fixedly sliding sleeve 8 is connected with urceolus 7 by connecting pin 9.
Among the present invention, wing groove 26 shapes and wing mechanism that described urceolus 7 lower ends arrange are suitable, be provided with the wing pin-and-hole 27 that is connected with wing mechanism in the wing groove 26, the described operator wing 15 be connected wing 16 and be connected with wing groove 26 by wing pin 14, wing pin-and-hole 27 respectively.
Among the present invention, described driving shaft mechanism comprises power transmission shaft 1 and the fixed axis 11 that is fixedly connected with power transmission shaft 1, and power transmission shaft 1 inner chamber is communicated with fixed axis 11 inner chambers; The 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.
Among the present invention, the end that described power transmission shaft 1 is connected with fixed axis 11 is provided with passage 31, and passage 31 is communicated with space between urceolus 7 and the power transmission shaft 1, and the space is between fixed cover sealing ring 5 and urceolus sealing ring 6.
Among the present invention, the other end of described fixed axis 11 is provided with cam path 30, and expander is arranged in the cam path 30; Be provided with runner 29 and fixed axis sealing ring 21 between cam path 30 and fixed axis 11 ends, fixed axis 11 inner chambers are communicated with by runner 29 with wing groove 26, fixed axis sealing ring 21 and urceolus 7 inwall fitted seal.
Among 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 chambers, and back-moving spring 10 is arranged in the spring groove 24 and cooperates with fixed axis 11.
Operating principle of the present invention is: in the time of use, upper end of the present invention is connected on the drilling tool, G.I.H, need the well section of reaming hole when arrival after, slush pump increases discharge capacity, sprain to press and cause pump pressure to raise in the down-hole, 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, because the operator wing 15, the internal diameter of the circumference that secondary wing 16 forms is less than cam bit 13 external diameters, deficiency so that cam bit 13 pass through, so cam bit 13 promotes the operator wing 15 simultaneously and secondary wing 16 is expanded outward, 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, strengthened the diameter of reamer, therefore when creeping into, just can enlarge the diameter of well, when needs further enlarge the diameter of well, 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, and the diameter that therefore cuts well will be larger, therefore can play the technique effect of further expansion well.
Embodiment 2
Urceolus 7 is cylindrical structure, there are wing groove 26 and the wing pin-and-hole 27 that is connected the operator wing 15 and secondary wing 16 in cylindrical lower end, the operator wing 15 and secondary wing 16 are connected in the wing groove 26 by wing pin-and-hole 27, there is end cap groove 28 rear end of urceolus 7, end cap 2 after the assembling is arranged in the end cap groove 28, front end at end cap 2 has fixed cover 4, is provided with fixed cover sealing ring 5 between fixed cover 4 and power transmission shaft 1; Be provided with pin-and-hole 25 and spring groove 24 in the stage casing of urceolus 7, behind assembling the present invention, by pin-and-hole 25 by connecting pin 9 fixed outer cylinders 7 and fixing sliding sleeve 8; The lower end of power transmission shaft 1 is that the reaming hole end is provided with cam path 30 and runner 29, cam path 30 is used 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, outer surface cover at fixed axis 11 has fixedly sliding sleeve 8, and fixedly sliding sleeve 8 is from all directions shape in the cylindrical, and the outer all directions structure of fixed axis 11 matches with the fixing interior all directions structure of sliding sleeve 8, the all directions structure that arranges can play and slide up and down, and makes power transmission shaft 1 to the effect of urceolus 7 transmitting torques.
The passage 31 that arranges at power transmission shaft can make liquid pass through, and can play the long-pending effect of enlarging section, reaches the area that increases 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 can play the effect of cleaning and cooling off wing when reaming hole creeps into; Are spring grooves 24 in the lower end of fixed axis 11, are provided with back-moving spring 10; Be provided with fixed pin holes at fixing sliding sleeve 8 bodies, be used for and being fixedly connected with of urceolus 7; Be fixed with respectively the expansion orbit of 13, one cam bits of four cam bits, 13 corresponding wings on four faces of the lower end of power transmission shaft 1 by cam bit screw 20.
Wing mechanism is made of the operator wing 15 and secondary wing 16, the front end of the operator wing 15 is the hook type shape, curved configuration partly has backward trapezoidal, owing to being symmetrical arranged two operator wings 15, so, the trapezium structure that arranges is when drawing two operator wings 15 in, and two trapezium structures can hold mutually, and the operator wing diameter that reaches after the gathering is fully 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 that arranges is when drawing two secondary wings 16 in, two trapezium structures also can hold mutually, and the secondary wing diameter that reaches after the gathering is fully consistent with urceolus.The structure of drawing in has a lot, and therefore, the structure of wing mechanism is not limited to this.Be provided with expansion orbit 23 at the operator wing 15 and secondary wing 16, wing pin 14 passes pin-and-hole and the wing pin-and-hole 27 of the operator wing 15, the fixing operator wing 15, and secondary wing 16 carries out same fixing; Two wing 15 symmetrical installations of operating, two secondary wing 16 symmetrical installations, when 15 gathering of the later operator wing is installed, the crotch part of the curved configuration part of its front end symmetrical wing of trapezoidal mutual income backward; On major and minor wing, also be provided with stopper slot 19, be connected with wing stop screw 17 in the stopper slot, wing stop screw 17 and stop screw packing ring 18 are fixed the wing limited block, carry out spacing to the operator wing 15 and secondary wing 16, restriction wing unlimited expansion is limited in the diameter range of regulation the wing after the expansion.
Embodiment 3
Assembling sequence of the present invention is:
At the urceolus 7 internal thread directions back-moving spring 10 of packing into, then put into fixedly sliding sleeve 8, fixedly sliding sleeve 8 is from all directions shape in the cylindrical, the outer all directions structure of fixed axis 11 matches with the fixing interior all directions structure of sliding sleeve 8; At power transmission shaft 1 urceolus sealing ring 6 is installed, after fixed cover 4 is loaded onto fixed cover sealing ring 5, power transmission shaft 1 is put into urceolus 7 from urceolus 7 internal thread directions, place packing ring 3 at urceolus 7 internal thread end faces, put into again end cap 2, then end cap 2 and urceolus 7 put into pin-and-hole 25 to connecting pin 9 to be threaded.
Four cam bits 13 are installed on respectively in the cam path 30 on four faces of lower end of power transmission shaft 1, then by cam bit screw 20 cam bit 13 are connected with pin-and-hole in the cam path 30; Plug 22 and power transmission shaft 1 are threaded connection.
Plug 22 is installed on the 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 of installing 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, the operator wing 15 and secondary wing 16 are carried out opening width spacing.

Claims (10)

1. reamer, comprise urceolus (7) and wing mechanism, it is characterized in that: also comprise being arranged in the urceolus (7) and along urceolus (7) in axial sliding driving shaft mechanism and resetting-mechanism that driving shaft mechanism is resetted, described urceolus (7) upper end is provided with the first hermetically-sealed construction with driving shaft mechanism outer wall fitted seal, the lower end is provided with wing groove (26), the end of urceolus (7) is provided with the second hermetically-sealed construction, wing mechanism is arranged in the wing groove (26), be provided with on the driving shaft mechanism and drive the expander that wing mechanism expands outwardly, and the inner chamber of driving shaft mechanism is communicated with wing groove (20).
2. reamer according to claim 1, it is characterized in that: 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 the wing groove (20), secondary wing (16) is identical two of structure, be symmetricly set in the wing groove (20), and the operator wing (15) and secondary wing (16) be arranged on the same circumference, the external diameter of circumference is identical with the external diameter of urceolus (7).
3. reamer according to claim 2, it is characterized in that: be provided with the expansion orbit (23) that cooperates with expander on the described operator wing (15) and the secondary wing (16), the expansion end of the operator wing (15) is hook solid, and the expansion end of secondary wing is the point of a knife shape.
4. reamer according to claim 3, it is characterized in that: 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, when expanding outwardly, expander moves at segmental arc.
5. reamer according to claim 4, it is characterized in that: described expander is the cam bit (13) that is fixedly installed on the driving shaft mechanism, described cam bit (13) is four, and the expansion orbit (23) with the operator wing (15) and secondary wing (16) cooperates respectively.
6. each described reamer according to claim 1-5, it is characterized in that: described the 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 the end cap groove (28), fixed cover (4) is fixed in the end cap groove (28) by end cap (2), is provided with the fixed cover sealing ring (5) that cooperates with the driving shaft mechanism outer wall on the fixed cover (4).
7. reamer according to claim 6, it is characterized in that: have a plurality of pin-and-holes (25) on the described urceolus (7), be provided with connecting pin (9) in the pin-and-hole (25), be provided with the fixedly sliding sleeve (8) that cooperates with driving shaft mechanism in the urceolus (7), fixedly sliding sleeve (8) is connected with urceolus (7) by connecting pin (9).
8. according to claim 1,2,3,4,5 or 7 described reamers, it is characterized in that: described driving shaft mechanism comprises power transmission shaft (1) and the fixed axis (11) that is fixedly connected with power transmission shaft (1), and power transmission shaft (1) inner chamber is communicated with fixed axis (11) inner chamber; The 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.
9. reamer according to claim 8, it is characterized in that: the end that described power transmission shaft (1) is connected with fixed axis (11) is provided with passage (31), passage (31) is communicated with space between urceolus (7) and the power transmission shaft (1), and the space is positioned between fixed cover sealing ring (5) and the urceolus sealing ring (6).
10. reamer according to claim 9, it is characterized in that: the other end of described fixed axis (11) is provided with cam path (30), and expander is arranged in the 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).
CN201210502411.1A 2012-11-30 2012-11-30 Reamer Active CN102943625B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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

Citations (5)

* Cited by examiner, † Cited by third party
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 Underreamer

Patent Citations (5)

* Cited by examiner, † Cited by third party
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 Underreamer

Cited By (1)

* Cited by examiner, † Cited by third party
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

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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.