CN1008286B - Drilling apparatus and cutter - Google Patents
Drilling apparatus and cutterInfo
- Publication number
- CN1008286B CN1008286B CN87105588A CN87105588A CN1008286B CN 1008286 B CN1008286 B CN 1008286B CN 87105588 A CN87105588 A CN 87105588A CN 87105588 A CN87105588 A CN 87105588A CN 1008286 B CN1008286 B CN 1008286B
- Authority
- CN
- China
- Prior art keywords
- pin
- housing
- cover
- cutlery
- bearing holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005553 drilling Methods 0.000 title claims description 63
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims description 11
- 238000005461 lubrication Methods 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 3
- 230000033001 locomotion Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000013213 extrapolation Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/34—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools of roller-cutter type
- E21B10/345—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools of roller-cutter type cutter shifted by fluid pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Drilling Tools (AREA)
Abstract
An underreamer including a body having a bore therethrough, an arm mounted at its upper end to the body, a sleeve member detachably secured to the lower end of each arm and adapted to receive the frictional wear caused by the rotation of the conical cutter mounted thereto. Bearings and seals disposed between the cutter and the sleeve member provide smooth rotation of the cutter. In addition, locking pins and bearings extending between the arm and the sleeve member secure the sleeve on the arm. The arms are pivotally mounted in slots in the body and mechanical structure is provided for moving the arms to their cutting position with their lower ends positioned radially outward from the body.
Description
Content of the present invention is reamer and retractility cutlery, and belongs to and creep into field of mining, the used drill bit field of drilling well particularly, a kind of reaming bit that has conical cutlery (being furnished with improvement type cutlery frame).
Reamer, retractility cutlery and Tapper all have been used to cutting-down, both can load onto the sword sheet on drill bit, also can not add any sword sheet in the lower end of drilling tool.U.S. Patent No. 3,386,521st, drill bit combine the example of utilization with reamer, U.S. Patent No. 3,171,503rd, reamer are installed in the example of drilling tool lower end, U.S. Patent No. 4,533,003rd is used for cutlery is fixed on a kind of improvement type device on the reamer drilling rod.
Conical cutlery has been used for drill bit and reamer.This conical cutlery is contained on the pin, and pin down extends inward from the lower end of reamer drilling rod.For conical cutlery is contained on the drilling rod, adopted rolling bearing and steel ball, U.S. Patent No. 2,641,447 have promptly illustrated this situation.Pin and steel ball lock fix in the groove between drilling rod and the conical cutlery inner surface, are used for cutlery is held on the cutlery pin, as U.S. Patent No. 2,661,447; 3,998,500 and 2,519, shown in 716.Patent No.4,161,343 have illustrated the button between pin and the cutlery and the effect of friction bearing.Patent No.3,998,500 propose, and utilize screw that bearing holder (housing, cover) is fixed on the pin.Patent No4,478,299 have narrated several bearings that are installed on the pin, comprise crack formula bush structure.
The cutting output that conical cutlery can produce on the reamer was limited by the cutting time that cutlery can freely rotate, and was the function of cutlery frame efficient.
At common cone cutlery, promptly in the cone drill bit, when drill bit rotated, cone can be made circular motion.Radius of a circle is exactly the natural radius that cone is rotated.As long as it is constant that this radius of gyration can keep stablizing, cutlery will be relative uniform with wearing and tearing on the cutlery frame, and cone drill bit just can be in good working order for a long time.Yet when cone drill bit was used in the reamer the inside, because the drilling rod of reamer will outwards stretch in use, the radius of gyration of cone will increase, and surpassed its natural radius of gyration, and the normal thrust load that cone drill bit is subjected to will be pointed to the rightabout of cutlery.When the awl bar of excessive reamer was not opened, the load on the cutlery was the deboost load basically entirely, is opposite with the cutlery direction.This deboost load is the main component of the suffered load of reamer cutlery, particularly in work incipient the time, if perhaps reamer only is used in cutting lay thin the time, because at this moment reamer has only been used the edge, outside back of taper cutlery.Moreover in the too big hole of deviation, the deboost load plays significant feature.When cutlery in operation was opened, the deboost load reduced at once, but had sizable load composition still to stay on the cutlery.And in operating process, taper bit always tries hard to recover its natural radius of gyration, just tries hard to close reamer or contraction inward, so just can set up the load opposite with cutlery of self.These variable loads that are added in operating process on the cutlery just make the cutlery frame produce excessive loss and inhomogeneous loss.One of result of this inhomogeneous loss and excessive loss has quickened the pin on the reamer drilling rod and the wearing and tearing of bearing, and this bearing is an ingredient of cutlery.In fact, after the pin on the drilling rod has had wearing and tearing, just the terminal part of drilling rod is eliminated and burn-on separately one new.The heat that is produced when carrying out this welding is weakened the drilling rod of reamer.Moreover drilling rod is every once to be welded through eliminating, and must remove former drilling rod a bit with the elimination damaged portion of being heated.Therefore, the welding of the replaceability of cutlery can only be carried out several times limited.
Reamer drilling rod of the present invention is an integral device, need not weld, and has therefore just overcome the shortcoming of above-mentioned drilling rod and cutlery aspect.Moreover, what is more important, when operating, cutlery can not make pin and drilling rod generation loss, therefore just need not carry out frequent replacing yet.On cutlery and the drilling rod, the contact of pin is the mechanism by means of a novelty, thereby has strengthened bearing the ability of load greatly, not only to the normal thrust load, and to the deboost load, is not always the case.Also enlarged the area that bears radial load when carrying out drilling operation on the cutlery.
The purpose of this invention is to provide a kind of improvement type reamer, Tapper or have the retractility rotary drilling-head of conical cutlery (being furnished with improvement type cutlery frame).Reamer is made up of following each part: drill body with holes, be contained in the rotary drilling rod of drill body upper end, be contained in the pin of drill body lower end, be held in the removable friction sleeve (bearing holder (housing, cover)) on the pin, the conical cutlery of band centre bore, pin and friction sleeve are closely buckled in the connector of cutlery centre bore and the hole wall of cutlery centre bore.Bearing part can bear normal thrust and radial thrust suffered when boring, can also bear deboost load suffered on the reamer cutlery.Bearing part is interconnective, and like this, bearing part and removable friction sleeve just can prevent the wearing and tearing of reamer pin, because friction sleeve is held on the pin, all motions are all carried out between cutlery, friction sleeve and bearing.
Above target and some other targets in an embodiment of the present invention, owing to adopted column or cup-shaped friction sleeve, just all realize.Friction sleeve can prevent that the drilling rod pin from rotating.In addition, between friction sleeve and the cone cutlery bearing part is housed,, increases the life-span of friction sleeve and cutlery to reduce friction.Bearing part is installed is in order to bear cutlery suffered various thrust loads when the operation.And, therefore both can reduce the cost of carrying out reaming because the expense of manufacturing and replacing friction sleeve is extremely small, can prolong the application life of reamer drilling rod and pin again.
Can further see other targets of the present invention, characteristics and advantage from accompanying drawing and describing in detail.
Referring to the detailed description of accompanying drawing, just can further understand the present invention to the embodiment of the invention.
Numeral among the figure and the corresponding parts of letter representative.
Fig. 1 is the structure chart that improvement type reamer of the present invention is in contraction state or working position, and a part is a view, and a part is a sectional view.
Fig. 2 is the structure chart that this reamer is in extended configuration or cutting position.
Fig. 3 is the detailed section view of sharps unit among the present invention.
Fig. 4 is the detailed section view of second embodiment of sharps unit among the present invention.
Fig. 5 is the detailed section view of another embodiment of sharps unit among the present invention.
At first see Fig. 1 and Fig. 2, the alphabetical A on the figure represents the retractility rotary drilling-head in apparatus of the present invention or the drilling tool of reamer.The upper end of drilling tool can be fixed to the lower end of drilling pipe B, and this drilling pipe then is extensible to the top of wellhole.Utilize wellhole, drilling tool A can drop to the following space of well cover by well cover (not drawing on the figure), and ream operation just here carries out.In general, the main body of drilling tool A, promptly drill body is C, and cutlery support or connecting rod wherein are housed, promptly drilling rod D is sharps unit E in its lower end.Initiatively plunger F can be movable in the hole of main body C, and link to each other with cutlery support or drilling rod D by movable connecting rod G.When plunger F moved downward, the lower end of connecting rod G is outwards expansion just, made also outwards expansion of drilling rod D, and sharps unit to extrapolation, is pushed the cutting state of its expansion, as shown in Figure 2.On this position, the rotation of drilling tool just drives main body C and the cutlery support together rotates, and just here, sharps unit E just gets out wellhole or with its expansion.Position above plunger turns back to, in the time of as shown in Figure 1, the connecting rod G that is attached thereto just has an effect cutlery is regained.
The upper end of main drill body C is that pipe 10(is terminated at drilling pipe B on it), be sleeve pipe 11 below, this sleeve pipe is connected with the pipe 10 of upper end again by screw thread 12.Upper end pipe 10 porose 10a communicate with hole, drilling pipe and hole 10b, and plunger F slides in 10b.Pipe box 11 has concentric holes 11a, wholely penetrates out, and the lower end in hole is 11b.
Many vertically extending small pieces 13 are arranged in drill body C, be used for receiving cutlery support or drilling rod D.The number of small pieces is not quite similar in each drilling tool, is three in this figure.Every small pieces 13 are all made longitudinal extension along pipe box 11, and all have one to enter the end points that the hole receives pivot pin 15.Cutlery drilling rod D also can be connected with drill body C by the such add-on parts of pivot pin spare.Stretch in circular port 13a the lower end of every small pieces.The sharps unit E that is contained in each cutlery lower end of drilling rod D just can move by 13a.
The cross section of each cutlery support or drilling rod D all is rectangle basically, and the upper end has little lug, has transverse holes on the sheet.The width of each drilling rod is identical with the width of small pieces 13 basically.In the time of within drilling rod D is positioned at small pieces 13, pivot pin 15 just extends through transverse holes, so that each drilling rod all pivotably is contained in each small pieces.Pivot pin 15 is outwards expanded drilling rod D, exceeds the outer surface of pipe box 11, and like this, sharps unit E is expansion thereupon also, as shown in Figure 2.
In order to make all cutlery drilling rod D stretch simultaneously, just each drilling rod is coupled together by pair of links 29 and connector 30.Each connector directly links together by the lower end of round sleeve 31 with annular plunger F.Many outside small lugs are arranged on the connector 30, an aperture or shrinkage pool are all arranged on each projection.The upper end of connecting rod 29 is supported on each limit of small lugs 32, and every end has an inside small lugs, places in the projection aperture or shrinkage pool on the connector 30, couples together with upper end and projection with connecting rod 29.
When annular plunger F was shifted onto its position that has raise by helical spring 36, connector also was elevated to the very approaching place of skewed surface with each drilling rod D inner face.Owing to link to each other with connecting rod 29, these connecting rods just are flapped toward position shown in Figure 1, thereby are inwardly moved in its lower end, and make each drilling rod state that remains retracted in pipe box.In the bottom in the hole of connector 30 a port spring 37(is housed and sees Fig. 1).When charging fluid by drillstock and annular plunger F and axle sleeve 31 and when down sending to, the port spring just plays metering function, this just makes the pressure above plunger F raise to some extent.When this pressure that has raise had surpassed the strength of helical spring 36, plunger F, axle sleeve 31 and connector 30 were just with respect to pipe box and drilling rod and down motion.This top pivot pin point that has just promoted between connecting rod and the connector 30 moves downward, so impel the lower end of connecting rod 29 outwards to expand.This extension movement causes that drilling rod D turns round around top pivot pin 15, and the lower end of drilling rod is outwards expansion then, enters expanding location thereby promote sharps unit E.In order to control the radial expansion of drilling rod, must be limited by braking sleeve 40 for moving downward of annular plunger F around connecting bushing 31, this axle sleeve then leans against between the hole 11a of sleeve pipe 11 and the hole 11c on the formed annular shoulder 11d.When the lower end of this plunger was leaning the upper end of braking sleeve 40, plunger just no longer continued motion, thereby has limited the spreading range of the lower end of connecting rod 29.
As shown in Figure 3, sharps unit E includes the element that takies that conical cutlery 50(has suitable shape, as profile of tooth or insertion shape, does not draw on the figure).Cutlery 50 has suitable profile, and promptly everybody taper shape of all knowing also has an interior thorax 52, and part is passed through the center.Sharps unit E comprises cutlery 50 is fixed on connector on the pin 54 of drilling rod D.Pin 54 is positioned at the lower end of drilling rod D, perpendicular.Pin 54 inwardly stretches downwards from the bottom of drilling rod D, has the centre bore 56 of an extension.Centre bore 56 is the part of lubricating cavity 58 frequently, so that the part that works for sharps unit E provides lubricated.Effect near the connector 60 of 56 outer ends, hole is a plunger, provides lubrication oil to assembly, and bears oil pressure, and oil pressure is applied on the connector 60, so that sharps unit keeps oil pressure and lubricated when work.
Being held on the pin 54 is a bearing holder (housing, cover) 62, and it contacts with the inner core 52 of cutlery 50, to accept rotating the wearing and tearing that cause by taper cutlery 50.In the embodiment shown in fig. 3, bearing holder (housing, cover) 62 is the bearing part of integrally-built a, cup-shaped basically, and it is round pin 54, by being fixed along the screw thread 64 of pin 54 cylindrical outer wall.Another kind method, the top of bearing holder (housing, cover) 62 can be opening types, outside the top of pin 54 can be exposed to, but can not run into the inwall 52 of cutlery 50.No matter which kind of method, apparent, when taper cutlery 50 freely rotated, pin 54 can not be worn.There is a horizontal grooving 63 bearing holder (housing, cover) 62 the insides on the top of the inwall 56 of pin 54, and its effect is to make dismounting bearing holder (housing, cover) 62 very convenient, and this point retells later on.
Locking bearing ball 66 is used for preventing that bearing holder (housing, cover) 62 from throwing off with pin 54 once in a while.During assembling, bearing ball 66 is packed within the groove 68 on the bearing holder (housing, cover) 62.Key spare 74 will lock bearing ball 66 and be extruded in the side opening 70 from hole, footpath 72.In case bearing holder (housing, cover) 62 is attached on the pin 54, key spare 74 just enters hole 72, footpath, forces bearing ball 66 to enter groove 68, and these two parts have just locked together like this.The effect of auxiliary key spare 76 is to prevent from that key spare 74 from throwing off the more important thing is, key spare 76 is to be fixed on key spares 74 in the hole, footpath 72 with screw thread then freely to rotate and that is to say to have only with threaded key spare and guarantee to lock bearing ball 66.
For taper cutlery 50 is fixed on the bearing holder (housing, cover) 62, also have some assemblies, bearing holder (housing, cover) 62 freely rotates cutlery 50, the various loads that occur in the time of can also bearing reaming.Comprise some bearing balls 80 in the assembly, a groove 81 is arranged between bearing holder (housing, cover) 62 and the taper cutlery 50, ball is located in this cannelure.Bearing ball 80 is positioned at hole 82, puts in place with hand, is blocked by connector 84.In addition, the bearing of journals 86 is between taper cutlery 50 and bearing holder (housing, cover) 62, and its effect is the wearing and tearing that reduce between the parts.Also available roller bearings replace the bearing of journals.Last assembly is a sealing ring 88, and its effect is that the lubrication oil that flows between bearing is spilt, and guarantees normally lubricated.In desirable embodiment, bearing holder (housing, cover) 62 preferably has an outer rim 90, just comparatively suitable gap can be arranged around the sealing ring 88 and the bearing of journals 86 like this.
As shown in Figure 3, assembling sharps unit E at first will be fixed on taper cutlery 50 on the bearing holder (housing, cover) 62, and bearing 86 and sealing ring 88 are between the two.After the endoporus 52 with bearing holder (housing, cover) 62 insertion cutleries 50, again ball bearing 80 is put into groove 81, and fixing on the throne with connector 84.With screw thread cutlery 50 and bearing holder (housing, cover) 62 are installed on the pin 54 then.If required, can be by hole 56 to groove 63, it is more convenient that bearing holder (housing, cover) is rotated, and rotates because taper cutlery 50 is tending towards breaking away from bearing holder (housing, cover).After assembling finishes, promptly put into locking bearing ball 66, by key spare 74 fix in position.
In use, sharps unit is holed in normal mode.But, when cutlery was rotating, all motions all were to carry out on the external surface of bearing holder (housing, cover) 62.The external surface of bearing holder (housing, cover) 62 sidewalls has born the radial load " b " that sharps unit is applied when boring.But deboost load " c " but is to be born by the surface 92 of ball bearing 80.Normal thrust load " a " is then born by the lower surface of bearing holder (housing, cover) 62 and the lower surface 94 of ball bearing 80.Owing to taked measure to absorb various thrust loads, the application life of the sharps unit that the present invention released is more much longer than the existing apparatus.Also have a bit, because do not rotate around the pin 54, also not wearing and tearing on the pin 52 are so the drilling rod of reamer also cuts with the new pin that changes the outfit with regard to no longer needing.But, when bearing holder (housing, cover) 62 need be changed because of serious wear really, also can change, but expense is extremely small.
The embodiment introduction of Fig. 4 be the another kind of method of installation shaft bearing sleeve on the pin, can prevent the rotation between bearing holder (housing, cover) and the pin.As shown in Figure 4, many side openings 155 are arranged on the pin 154, these side openings and centre bore 156 meet at right angles.In addition, semicircle orifice 157 is drilled on the bearing holder (housing, cover) 162, one 157 corresponding one 156 side opening in hole.Cutlery at work, the effect of pin 159 is with bearing holder (housing, cover) 162 and pin 154 fastenings.Each pin 159 all has the main body of a preceding finished surface, and lucky and semicircle orifice 157 matches.After bearing holder (housing, cover) 162 installs, pin 159 is fixed in the hole 157, so that bearing holder (housing, cover) 162 lockings are on the throne with fixture 161.Fixture 161 slides in hole 156, its lower end with pin 159 to extrapolation.After installing, round end ring 163 is stuck in fixture 161 in the centre bore 156.The effect of connector 160 is to form a lubricant reservoir 158, for each relevant parts of sharps unit E provide lubricated.In the embodiment of Fig. 4, replaced the bearing of journals with roller bearing 186, but these two kinds of bearings can use all.
An alternative embodiment of the invention is seen Fig. 5.In this embodiment, replaced pin 159, with the fixed axis bearing sleeve with ball bearing.Ball bearing 202 is installed on hole 204, and tight with hand, and is fixing with fixture 206 again.The effect of auxiliary seal ring 208 is to prevent that lubrication oil from spilling, and prevents that simultaneously foreign material from entering sharps unit.Yet with exterior seal ring 288 differences, sealing ring 208 does not rotate with cutlery, therefore can not cause wearing and tearing to pin 264.The same with other embodiment, the embodiment of Fig. 5 installs easily, only needs bearing holder (housing, cover) 262 and cutlery 250 are placed on the pin, ball bearing 202 is placed in the bearing holder (housing, cover) to get final product again.
In a word, reamer structure provided by the present invention can be born very big thrust load, and reamer drilling rod and pin be not wearing and tearing basically, need not frequent replacing.Repair very easyly, expense is cheap, because have only bearing holder (housing, cover) can need because of the wearing and tearing that various thrust loads cause to change.
Above-mentioned detailed description is just in order to understand the present invention better, will be appreciated that and exist limitation here, on the basis that does not depart from the scope of the present invention with claims, can do some necessary modifications, this is conspicuous to those skilled in the art.
Claims (7)
1, drilling equipment comprises, a drill body with holes has a longitudinal cut at least on its sidewall; A drilling rod is rotatably installed in the upper end of a longitudinal cut of drill body, and drilling rod comprises the pin spare of lower end; A cutlery has the cutting element of a setting around its outer rim; A centre bore (part stretches) and annular edge wall are arranged; One is cup-shaped bearing holder (housing, cover) basically, is installed on the pin spare of drilling rod; Contact with the centre bore of cutlery;
A composite member is fixed on (detachably) on the pin by drilling rod with bearing holder (housing, cover), can prevent to rotate between bearing holder (housing, cover) and the pin; An assembly is locked in cutlery on the bearing holder (housing, cover); Bearing holder (housing, cover) is an overall structure, is cup-shaped basically, also is installed on the pin with being threaded around pin; It is characterized in that, prevent that the composite member that bearing holder (housing, cover) rotates from comprising a locking bearing at least, this bearing is stuck between pin and the bearing holder (housing, cover) by a key spare at least, and key rotates in the hole, extend to pin abreast in this hole, stretches from pin center outward radial simultaneously; A connector that in the pin centre bore, slides, when reamer carried out work, connector was subjected to being fixed in the centre bore after the oil pressure, and connector limits a lubricating cavity in centre bore, can send into lubrication oil under oil pressure, the oil pressure of connector reaction wellhole is to keep the pressure of lubricating cavity.
According to the device of claim 1, it is characterized in that 2, assembly comprises the ball bearing between bearing holder (housing, cover) and cutlery.
According to the device of claim 1, it is characterized in that 3, composite member comprises a pin at least, pin has a centre bore, the side of pin have one lateral opening, stretch into the centre bore of pin from the pin outside, pin can slide in lateral opening; On first position, have at least a part to slip in the centre bore of pin, on second position, have at least a part to slip in the groove of bearing holder (housing, cover), the effect of this groove is to prevent that bearing holder (housing, cover) from rotating, and the element of pin centre bore is used for dowel fixes on second position.
According to the device of claim 3, it is characterized in that 4, pin has a head, a cylinder is arranged; Lateral openingly contain bigger one section, head can slide therein; Also have one less one section, cylinder can slide therein, and the big section centre bore with pin coupled together; Have at least a part of cylinder to stretch in the centre bore of pin.
According to the device of claim 3, it is characterized in that 5, pin apparatuses contains several bearing balls.
According to the device of claim 1, it is characterized in that 6, bearing is between cutlery and bearing holder (housing, cover).
7, according to the device of claim 6, it is characterized in that, prevent that the element that bearing holder (housing, cover) rotates from comprising at least one locking bearing, between pin and bearing holder (housing, cover).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US89606086A | 1986-08-13 | 1986-08-13 | |
| US896,060 | 1986-08-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87105588A CN87105588A (en) | 1988-06-01 |
| CN1008286B true CN1008286B (en) | 1990-06-06 |
Family
ID=25405559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87105588A Expired CN1008286B (en) | 1986-08-13 | 1987-08-13 | Drilling apparatus and cutter |
Country Status (7)
| Country | Link |
|---|---|
| CN (1) | CN1008286B (en) |
| BR (1) | BR8704193A (en) |
| CA (1) | CA1326660C (en) |
| DE (1) | DE3726813A1 (en) |
| FR (1) | FR2607183B1 (en) |
| GB (1) | GB2194571B (en) |
| NO (1) | NO873373L (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044631C (en) * | 1994-03-23 | 1999-08-11 | 刘启文 | Boring drill |
| WO1999037879A1 (en) * | 1998-01-26 | 1999-07-29 | Dresser Industries, Inc. | Rotary cone drill bit with enhanced journal bushing |
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| SA111320565B1 (en) | 2010-06-29 | 2014-09-10 | Baker Hughes Inc | Hybrid Drill Bit With Anti-Tracking Feature |
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| SG192650A1 (en) | 2011-02-11 | 2013-09-30 | Baker Hughes Inc | System and method for leg retention on hybrid bits |
| MX351357B (en) | 2011-11-15 | 2017-10-11 | Baker Hughes Inc | Hybrid drill bits having increased drilling efficiency. |
| MX2016015278A (en) | 2014-05-23 | 2017-03-03 | Baker Hughes Inc | Hybrid bit with mechanically attached rolling cutter assembly. |
| US11428050B2 (en) | 2014-10-20 | 2022-08-30 | Baker Hughes Holdings Llc | Reverse circulation hybrid bit |
| CN106903349A (en) * | 2017-04-27 | 2017-06-30 | 湖北武大珞珈工程结构检测咨询有限公司 | A kind of electric drill reaming bit |
| US10689914B2 (en) | 2018-03-21 | 2020-06-23 | Saudi Arabian Oil Company | Opening a wellbore with a smart hole-opener |
| US10689913B2 (en) | 2018-03-21 | 2020-06-23 | Saudi Arabian Oil Company | Supporting a string within a wellbore with a smart stabilizer |
| CN110548904B (en) * | 2019-10-06 | 2020-07-28 | 常州市荣科新材料有限公司 | Forced reaming drill bit |
| US11299968B2 (en) | 2020-04-06 | 2022-04-12 | Saudi Arabian Oil Company | Reducing wellbore annular pressure with a release system |
| US11414942B2 (en) | 2020-10-14 | 2022-08-16 | Saudi Arabian Oil Company | Packer installation systems and related methods |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB193679A (en) * | 1922-02-28 | 1923-03-01 | Alexander Mark Tucker | Improvements in drill cutters for rotary boring drills |
| US1803679A (en) * | 1925-12-16 | 1931-05-05 | Hughes Tool Co | Drill cutter retaining means |
| GB346946A (en) * | 1929-03-25 | 1931-04-23 | Chicago Pneumatic Tool Company | |
| GB338146A (en) * | 1929-06-13 | 1930-11-13 | Walter Andreas Abegg | Joint structure and method of making same |
| GB385819A (en) * | 1931-05-19 | 1933-01-05 | Chicago Pneumatic Tool Co | Rotary roller bits for well-drilling |
| US2519716A (en) * | 1946-03-06 | 1950-08-22 | Reed Roller Bit Co | Bearing assembly |
| US2641447A (en) * | 1950-01-09 | 1953-06-09 | Archer W Kammerer | Hook tooth rotary drill bit and cutter |
| GB766242A (en) * | 1955-03-23 | 1957-01-16 | Archer William Kammerer | Rotary expansible well drill bits |
| GB838833A (en) * | 1958-08-25 | 1960-06-22 | Archer William Kammerer | Expansible rotary drill bit |
| US3171503A (en) * | 1962-05-02 | 1965-03-02 | Kirk R Shirley | Expansible rotary drill bit |
| US3386521A (en) * | 1965-11-26 | 1968-06-04 | A Z Internat Tool Company | Combination well drilling tool |
| US3554305A (en) * | 1968-09-24 | 1971-01-12 | Rotary Oil Tool Co | Reverse circulation expansible rotary drill bit with hydraulic lock |
| US3750771A (en) * | 1972-05-08 | 1973-08-07 | Grant Oil Tool Co | Underreamer having variable arm extension |
| US3998500A (en) * | 1975-08-28 | 1976-12-21 | Smith International, Inc. | Mountable cone sub assembly |
| US4161343A (en) * | 1978-07-21 | 1979-07-17 | Dresser Industries, Inc. | Cone retainer for a rotary rock bit |
| US4266622A (en) * | 1979-01-15 | 1981-05-12 | Smith International, Inc. | Rotary rock bit and method of making same |
| US4282941A (en) * | 1979-04-18 | 1981-08-11 | Smith International Inc. | Underreamer with large cutter elements and axial fluid passage |
| US4478299A (en) * | 1982-03-26 | 1984-10-23 | Trend Rock Bit Alberta, Ltd. | Rock bit construction |
| US4533003A (en) * | 1984-03-08 | 1985-08-06 | A-Z International Company | Drilling apparatus and cutter therefor |
| US4600064A (en) * | 1985-02-25 | 1986-07-15 | Hughes Tool Company | Earth boring bit with bearing sleeve |
| US4722615A (en) * | 1986-04-14 | 1988-02-02 | A-Z International Tool Company | Drilling apparatus and cutter therefor |
-
1987
- 1987-08-06 GB GB8718646A patent/GB2194571B/en not_active Expired - Lifetime
- 1987-08-12 DE DE19873726813 patent/DE3726813A1/en active Granted
- 1987-08-12 BR BR8704193A patent/BR8704193A/en not_active IP Right Cessation
- 1987-08-12 NO NO873373A patent/NO873373L/en unknown
- 1987-08-12 CA CA000544295A patent/CA1326660C/en not_active Expired - Fee Related
- 1987-08-13 CN CN87105588A patent/CN1008286B/en not_active Expired
- 1987-08-13 FR FR8711551A patent/FR2607183B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB8718646D0 (en) | 1987-09-09 |
| NO873373D0 (en) | 1987-08-12 |
| DE3726813A1 (en) | 1988-02-25 |
| GB2194571B (en) | 1990-05-16 |
| FR2607183B1 (en) | 1994-02-04 |
| GB2194571A (en) | 1988-03-09 |
| CN87105588A (en) | 1988-06-01 |
| DE3726813C2 (en) | 1993-01-21 |
| CA1326660C (en) | 1994-02-01 |
| BR8704193A (en) | 1988-04-12 |
| FR2607183A1 (en) | 1988-05-27 |
| NO873373L (en) | 1988-02-15 |
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Legal Events
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| C06 | Publication | ||
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| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
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