CN206000482U - Drill string clutch instrument - Google Patents
Drill string clutch instrument Download PDFInfo
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- CN206000482U CN206000482U CN201620865902.6U CN201620865902U CN206000482U CN 206000482 U CN206000482 U CN 206000482U CN 201620865902 U CN201620865902 U CN 201620865902U CN 206000482 U CN206000482 U CN 206000482U
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Abstract
The utility model discloses a kind of drill string clutch instrument, including cylinder sleeve body, in this cylinder sleeve body, bearing mechanism is disposed with axial order, upper mandrel, spline body, lower mandrel and power transmission shaft, on this, mandrel is assemblied in cylinder sleeve body by guiding mechanism and back-moving spring, on this, the upper end of mandrel is connected with the bottom of bearing mechanism, the inner circumferential axially spaced-apart of spline body is provided with two row's inner spline gears, the periphery on this lower mandrel top is provided with the external spline teeth matching with the inner spline gear on week in spline body, this lower mandrel is assemblied on spline body by external spline teeth, the upper end of power transmission shaft is connected with the bottom of lower mandrel, it is provided with string bearing between this power transmission shaft and cylinder sleeve body, cylinder sleeve body is extended in this power transmission shaft lower end.This utility model improves directive efficiency be applied to oriented sliding drilling.
Description
Technical field
This utility model is related to downhole tool technical field, specifically a kind of drill string clutch instrument.
Background technology
With the exploitation further of oil, increasing directional well, horizontal well are used in petroleum drilling technology, in portion
Region-by-region even adopts cluster well, and such well bore is designed as drilling well and saves cost, also can more preferably, more accurately be drilled into design
Target position, improves production efficiency and yield.Meanwhile, its complicated casing programme, well track also bring to drilling technology very high
Difficulty, be accomplished by solving the problems, such as during oriented sliding drilling that the pressure of the drill applies first difficult.
For example：In directional well, rotating disk must be checked in directional inclination, prevent drill string from rotating, with skew-swept airfoil or other
Mud motor direct drive drill bit rotates, and carries out broken rock, and top drilling tool can only slide feeding.Well bore due to distance
Oblique or be horizontally orientated to, drilling tool is put down and time is crept in well, and frictional resistance is very big, and most of pressure of drilling tool deadweight transmission is disappeared
It is difficult to really be delivered on drill bit on overcoming drilling tool frictional resistance, terrestrial operation engineer even is difficult to know the accurate of drill bit consumption
Pressure, thus rate of penetration is very limited, sometimes pressurizes by force and also times to being easily caused for solving the problems, such as drill bit backing pressure
The accidents such as brill.
For the backing pressure problem in directed drilling, occur in that some anti-backing pressure instruments at present both at home and abroad, such as thruster, vibration
Device etc., can solve the problems, such as drill bit backing pressure, but using effect is inconspicuous, use condition also has certain limitation to a certain extent.
Content of the invention
The purpose of this utility model is：For above-mentioned the deficiencies in the prior art, provide one kind to be applied to oriented sliding and bore
Enter to improve the drill string clutch instrument of directive efficiency.
The technical solution adopted in the utility model is, a kind of drill string clutch instrument, including cylinder sleeve body, in described cylinder sleeve body with
Axial order is disposed with bearing mechanism, upper mandrel, spline body, lower mandrel and power transmission shaft, described upper mandrel pass through guiding mechanism and
Back-moving spring is assemblied in cylinder sleeve body, and on this, the upper end of mandrel is connected with the bottom of bearing mechanism, the inner circumferential axle of described spline body
To being arranged at intervals with two row's inner spline gears, the periphery on described lower mandrel top is provided with and the inner spline gear phase on week in spline body
The external spline teeth of coupling, this lower mandrel is assemblied on spline body by external spline teeth, the upper end of described power transmission shaft and lower mandrel
Bottom connects, and is provided with string bearing, cylinder sleeve body is extended in this power transmission shaft lower end between this power transmission shaft and cylinder sleeve body.
Described bearing mechanism is mainly made up of valve seat, valve rod, piston, and described valve seat is assemblied on cylinder sleeve body, described valve rod
It is axially mounted on the valve seat on cylinder sleeve body, the valve seat outside this valve rod is provided with multiple through holes, and the end of this valve rod and dress
Fit over the orifice plate carrier gap cooperation on piston, described piston is fixedly connected with the upper mandrel upper end in cylinder sleeve body.
Further, described valve rod and orifice plate carrier are coordinated with conical surface gap.
Described guiding mechanism is mainly made up of with the spacer pin being assemblied in cylinder sleeve body cam, and described cam two ends are passed through to push away
Power bearing is assemblied on mandrel, and this cam outer wall is provided with " W " track guide chute, and described spacer pin extends radially to cam
Guide chute in.
Further, described spacer pin is mainly made up of the block of blind cavernous structure, slide block and back-moving spring, described block dress
Fit on cylinder sleeve body, described slide block is assemblied in block by back-moving spring, this slide block is mated with the guide chute of cam.
Described spline body is connected with upper mandrel by connector.
Further, the periphery of described spline body is provided with external spline teeth, and this spline body passes through external spline teeth and cylinder sleeve body inner circumferential
Engagement.
Form annular clearance between described lower mandrel and cylinder sleeve body inner circumferential, be provided with float in this annular clearance, below float
Pressure relief vent on corresponding cylinder sleeve body.
Further, described cylinder sleeve body is mainly made up of upper cylinder sleeve, transition joint, middle cylinder sleeve and lower cylinder sleeve.
The beneficial effects of the utility model are：
This utility model is applied to oriented sliding drilling to improve directive efficiency, adapts to oriented sliding drilling and non-slip is bored
Enter.Separated by making lower drill on drill string clutch instrument, make the upper drilling string rotary drilling of script slipping drilling, reduce top and bore
The frictional resistance of post, so as the pressure of the drill applying more preferably, more concentration be delivered to drill bit, reach solution directional well, horizontal well slipping drilling
When backing pressure problem, improve rate of penetration.
Brief description
Below in conjunction with the accompanying drawings this utility model is further described.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic diagram that in Fig. 1, clutch executes assembly.
Fig. 3 is the structural representation of guiding mechanism in Fig. 1.
Fig. 4 is the structural representation of the spline body in Fig. 1 and Fig. 2.
Fig. 5 is the C-C schematic diagram of Fig. 4.
Fig. 6 is the D-D profile of Fig. 4.
Fig. 7 is the structural representation of lower mandrel.
Fig. 8 is the E-E schematic diagram of Fig. 7.
Fig. 9 is the F-F schematic diagram of Fig. 7.
Figure 10 is the A-A schematic diagram in Fig. 1.
Figure 11 is the B-B schematic diagram in Fig. 2.
In figure code name implication：10- valve seat；11- bonnet；12- valve rod；13- pin；The upper cylinder sleeve of 20-；21- shank；22- limits
Position pin；23- back-moving spring；30- orifice plate carrier；31- piston；32- sealing ring；33- bearing；34- cam；35- back of the body cap；36- bearing；
37- back-moving spring；The upper mandrel of 38-；40- transition joint；50- connector；51- sealing ring；Cylinder sleeve in 60-；61- spline body；62-
Lower mandrel；63- float；64- sealing ring；Cylinder sleeve under 70-；71- pressure cap；72- string bearing inner race；73- ball；Outside 74- string bearing
Circle；75- prevents capping off；76- power transmission shaft；W track chute；W1 primary importance；The W2 second position；W3 the 3rd position；
W4 the 4th position；W5 the 5th position.
Specific embodiment
Referring to shown in Fig. 1 to Figure 11, this utility model is drill string clutch instrument, including cylinder sleeve body.Described cylinder sleeve body is main
It is made up of upper cylinder sleeve, transition joint, middle cylinder sleeve and lower cylinder sleeve.From top to bottom mainly by the upper cylinder sleeve 20 of corresponding upper mandrel 38, right
Middle cylinder sleeve 60, the lower cylinder sleeve 70 of corresponding power transmission shaft 76 of mandrel 62 should be descended, between upper cylinder sleeve and middle cylinder sleeve, play interconnection function
Transition joint.
Referring to shown in Fig. 1, Figure 10, Figure 11：In above-mentioned cylinder sleeve body with axial order be disposed with bearing mechanism, upper mandrel 38,
Spline body 61, lower mandrel 62 and power transmission shaft 76.Described upper mandrel 38 passes through guiding mechanism and back-moving spring 37 is assemblied in cylinder sleeve body
Interior, the upper end of this mandrel is connected with the bottom of bearing mechanism.Referring to shown in Fig. 2, Fig. 4, Fig. 5, Fig. 6：The inner circumferential of described spline body
Axially spaced-apart is provided with two row's inner spline gears, referring to shown in Fig. 7, Fig. 8, Fig. 9：The periphery on described lower mandrel 62 top be provided with
The external spline teeth that inner spline gear on week in spline body matches, and in spline body, the inner spline gear of the upper row in week corresponds to and lower core
On axle 62, exclusive spline tooth refers to connect cooperation.The inner spline gear of spline body is highly consistently higher than the outer flower on lower mandrel 62 in the axial direction
Key teeth height.This lower mandrel 62 is assemblied on spline body by external spline teeth, the upper end of described power transmission shaft 76 and lower mandrel 62
Bottom connects, and is provided with string bearing, cylinder sleeve body is extended in this power transmission shaft 76 lower end between this power transmission shaft 76 and cylinder sleeve body.Wherein,
It is provided with back of the body cap 35 between guiding mechanism and the upper end of back-moving spring；Back-moving spring 37 lower end is kept out on the corresponding place with cylinder sleeve body
Cylinder sleeve 20 lower end connects on the top end face of transition joint 40, and this transition joint 40 lower end is connected with the top of middle cylinder sleeve 60；Above-mentioned
String bearing is mainly made up of string bearing inner race 72, ball 73 and string bearing outer ring 74, and this string bearing inner race 72 and power transmission shaft 76 are joined
Close, this string bearing outer ring coordinates with lower cylinder sleeve 70, be provided with and keep out pressure cap 71 at lower mandrel, lower end going here and there the upper end of bearing
It is provided with anti-lost 75, keep out string bearing bottom and emerge lower cylinder sleeve 70；The periphery of described spline body is provided with external spline teeth, this spline body
Engaged with cylinder sleeve body inner circumferential by external spline teeth.
Above-mentioned bearing mechanism is mainly made up of valve seat 10, valve rod 12, piston 31, and described valve seat 10 is assemblied in by pin 13
On cylinder sleeve body, described valve rod 12 is axially mounted on the valve seat 10 on cylinder sleeve body, the valve seat 10 outside this valve rod 12 is provided with many
Individual through hole, and the end of this valve rod 12 and the cooperation of orifice plate carrier 30 gap, described piston 31 and the cylinder sleeve body being assemblied on piston 31
Interior upper mandrel 38 upper end is fixedly connected.Preferably, above-mentioned valve rod 12 is axially mounted on cylinder sleeve body the present embodiment by bonnet 11
Valve seat 10 on；Above-mentioned valve rod 12 and orifice plate carrier 30 are coordinated with conical surface gap.Wherein, be provided between piston 31 and cylinder sleeve body close
Seal 32.
Shown in Figure 3：Above-mentioned guiding mechanism is mainly by cam 34 and the spacer pin being assemblied on shank 21 in cylinder sleeve body
22 compositions, a bearing is passed through at described cam 34 two ends respectively（33,36）It is assemblied on mandrel 38, this cam 34 outer wall sets
There is " W " track guide chute, described spacer pin 22 extends radially in the guide chute of cam 34.The present embodiment is preferably, described
Spacer pin 22 is mainly made up of the block of blind cavernous structure, slide block and back-moving spring 23, and described block is assemblied on cylinder sleeve body, institute
State slide block to be assemblied in block by back-moving spring 23, this slide block is mated with the guide chute of cam 34.
In addition, above-mentioned spline body 61 is connected with upper mandrel 38 by connector 50；The end of above-mentioned lower mandrel 62 is provided with
Float 63 and plug, have through hole on the cylinder sleeve body wall between float 63 and plug.Wherein, in lower mandrel upper end and connector
Commonly connected part between be provided with sealing ring 51；Between float 63 and middle cylinder sleeve 60, it is all provided between float 63 and lower mandrel 62
There is sealing ring 64；Form annular clearance between described lower mandrel and cylinder sleeve body inner circumferential, be provided with float in this annular clearance, under float
Pressure relief vent on the corresponding cylinder sleeve body in side；Above-mentioned spline body constitutes clutch together with upper mandrel 38, lower mandrel 62 and middle cylinder sleeve 60 etc.
Execution assembly（Shown in Figure 2）.
Work process：
When upper mandrel 38 is in original position, spacer pin 22 is located at primary importance W1 in the guide chute of cam 34,
Power transmission shaft 67 is in contraction transition.
After first time turn on pump, under mud pressure effect, mandrel 38 is forced to move down, the cam 34 on upper mandrel 38
Also with moving down, spacer pin 22 is fixed on the first cylinder sleeve simultaneously, will not move so that cam 34 is with respect to spacer pin 22
Raw rotation, spacer pin 22 slides in guide chute, the primary importance that spacer pin 22 slides by the corresponding guide chute of track chute W
At W1 to second position W2 of the corresponding guide chute of track chute W, now spacer pin 22 and guiding cunning lean, when cam 34
When no longer moving down, upper mandrel 38 also cannot continue to move down, and the descending distance of this stage upper mandrel 38 is L1.Meanwhile,
The distance of piston 31, orifice plate carrier 30 also descending L1 downwards.Now, valve rod 12 is still located in orifice plate carrier 30 endoporus, and all mud must
Must pass through from valve rod 12 and orifice plate carrier 30, a narrow and small annular space being formed, now area of passage is minimum, so mud pressure is relatively
High；Meanwhile, the power transmission shaft 67 of upper mandrel 38 lower section is still in stator transition.
Subsequently, slush pump stops for the first time, and mud annular pressure sheds, in the presence of back-moving spring 37, upper mandrel 38
Move up, now, spacer pin 22 slides to the 3rd at second position W2 of the corresponding guide chute of the track chute W of cam 34
Put at W3, orifice plate carrier 30 returns to initial position.
Start for second when slush pump, upper mandrel 38 moves down, and cam 34 also moves down therewith, and spacer pin 22 is from cam 34
The 3rd position W3 of the corresponding guide chute of track chute W at slide at the 4th position W4, then slide to the 5th position W5, this time limit
Position pin 22 is leant with guide chute, and cam 34 no longer moves down, and upper mandrel 38 also cannot continue to move down, this stage upper mandrel
38 descending distances are L2.Meanwhile, the distance of piston 31, orifice plate carrier 30 also downward L2.Now, valve rod 12 leaves orifice plate carrier
30 endoporus, the annulus access between them becomes suddenly big, when comparing with first time turn on pump, in the case of discharge capacity identical, due to
Circulation passage becomes big, so that the mud pressure of system is reduced；Meanwhile, upper mandrel 38 refers to connect with lower mandrel 62 tooth by spline body 61 and joins
Close, reached and driven the power transmission shaft 67 that lower mandrel 62 lower end connects to rotate.
Subsequently, slush pump stops for second, and mud annular pressure sheds, in the presence of back-moving spring 37, upper mandrel 38
Move up, upper mandrel 38 refers to connect cooperation by spline body 61 and lower mandrel 62 tooth to be separated, now, cam 34, orifice plate carrier 30 etc.
All return to position the most initial.
As above circulating, thus passing through startup and the stopping of slush pump, controlling the state whether power transmission shaft 76 rotates.Work as mud
When pressure is higher, this utility model spline body 61 and lower mandrel 62 are in disengaged condition, can be used for oriented sliding drilling, can be effective
Solve the problems, such as de- pressure；When mud pressure is relatively low, in this utility model, spline body 61 and lower mandrel 62 are in engagement, can use
When non-slip is crept into.It is applied to oriented sliding drilling to improve directive efficiency, adapt to oriented sliding drilling and non-slip drilling.
Separated by making lower drill on drill string clutch instrument, make the upper drilling string rotary drilling of script slipping drilling, reduce upper drilling string
Frictional resistance so that the pressure of the drill applying more preferably, more concentration be delivered to drill bit, when reaching solution directional well, horizontal well slipping drilling
Backing pressure problem, improve rate of penetration.
The technical scheme of above example only in order to this utility model to be described, is not intended to limit.Although with reference to aforementioned reality
The technical scheme applying example has been described in detail to this utility model, it will be understood by those within the art that：Its according to
So preceding solution can be modified, or equivalent is carried out to wherein some technical characteristics；And these modification or
Person replaces, and does not make the essence of appropriate technical solution depart from spirit and scope of the present utility model.
Claims (9)
1. a kind of drill string clutch instrument, including cylinder sleeve body it is characterised in that：In described cylinder sleeve body, pressure-bearing is disposed with axial order
Mechanism, upper mandrel, spline body, lower mandrel and power transmission shaft, described upper mandrel is assemblied in cylinder sleeve by guiding mechanism and back-moving spring
In vivo, on this, the upper end of mandrel is connected with the bottom of bearing mechanism, and the inner circumferential axially spaced-apart of described spline body is provided with two rows
Spline tooth, the periphery on described lower mandrel top is provided with the external spline teeth matching with the inner spline gear on week in spline body, should
Lower mandrel is assemblied on spline body by external spline teeth, and the upper end of described power transmission shaft is connected with the bottom of lower mandrel, this power transmission shaft
It is provided with string bearing and cylinder sleeve body between, cylinder sleeve body is extended in this power transmission shaft lower end.
2. according to claim 1 drill string clutch instrument it is characterised in that：Described bearing mechanism is mainly by valve seat, valve rod, work
Plug composition, described valve seat is assemblied on cylinder sleeve body, and described valve rod is axially mounted on the valve seat on cylinder sleeve body, the valve outside this valve rod
Multiple through holes are provided with seat, and the end of this valve rod and the cooperation of orifice plate carrier gap, described piston and the cylinder being assemblied on piston
Cover internal upper mandrel upper end to be fixedly connected.
3. according to claim 2 drill string clutch instrument it is characterised in that：Described valve rod is joined with conical surface gap with orifice plate carrier
Close.
4. according to claim 1 drill string clutch instrument it is characterised in that：Described guiding mechanism is mainly by cam and being assemblied in
Spacer pin composition in cylinder sleeve body, described cam two ends are assemblied on upper mandrel by thrust bearing, and this cam outer wall is provided with
" W " track guide chute, described spacer pin extends radially in the guide chute of cam.
5. according to claim 4 drill string clutch instrument it is characterised in that：Described spacer pin is mainly by the lid of blind cavernous structure
Cap, slide block and back-moving spring composition, described block is assemblied on cylinder sleeve body, and described slide block is assemblied in block by back-moving spring
Interior, this slide block is mated with the guide chute of cam.
6. according to claim 1 drill string clutch instrument it is characterised in that：Described spline body passes through connector with upper mandrel even
Connect.
7. according to claim 1 or 6 drill string clutch instrument it is characterised in that：The periphery of described spline body is provided with external splines
Tooth, this spline body is engaged with cylinder sleeve body inner circumferential by external spline teeth.
8. according to claim 1 drill string clutch instrument it is characterised in that：Formed between described lower mandrel and cylinder sleeve body inner circumferential
Annular clearance, is provided with float in this annular clearance, the pressure relief vent on corresponding cylinder sleeve body below float.
9. according to claim 1 or 8 drill string clutch instrument it is characterised in that：Described cylinder sleeve body is mainly by upper cylinder sleeve, centre
Joint, middle cylinder sleeve and lower cylinder sleeve composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620865902.6U CN206000482U (en) | 2016-08-11 | 2016-08-11 | Drill string clutch instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620865902.6U CN206000482U (en) | 2016-08-11 | 2016-08-11 | Drill string clutch instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206000482U true CN206000482U (en) | 2017-03-08 |
Family
ID=58198508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620865902.6U Active CN206000482U (en) | 2016-08-11 | 2016-08-11 | Drill string clutch instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206000482U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050159A (en) * | 2016-08-11 | 2016-10-26 | 中石化石油工程技术服务有限公司 | Drill string clutching tool |
| CN112832689A (en) * | 2021-03-25 | 2021-05-25 | 中国石油天然气集团有限公司 | Drill stem rotary directional control drilling tool |
-
2016
- 2016-08-11 CN CN201620865902.6U patent/CN206000482U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050159A (en) * | 2016-08-11 | 2016-10-26 | 中石化石油工程技术服务有限公司 | Drill string clutching tool |
| CN112832689A (en) * | 2021-03-25 | 2021-05-25 | 中国石油天然气集团有限公司 | Drill stem rotary directional control drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210922 Address after: 100027 Chaoyangmen North Street, Chaoyang District, Chaoyang District, Beijing Patentee after: SINOPEC Group Patentee after: SINOPEC OILFIELD SERVICE Corp. Patentee after: DRILLING ENGINEERING INSTITUTE, SINOPEC SOUTHWEST PETROLEUM ENGINEERING Co.,Ltd. Address before: 100101 No.9, jishikou Road, Chaoyang District, Beijing Patentee before: SINOPEC OILFIELD SERVICE Corp. Patentee before: DRILLING ENGINEERING INSTITUTE, SINOPEC SOUTHWEST PETROLEUM ENGINEERING Co.,Ltd. |