CN203559776U - Guiding and locking mechanism suitable for driving head of sleeve pipe - Google Patents
Guiding and locking mechanism suitable for driving head of sleeve pipe Download PDFInfo
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- CN203559776U CN203559776U CN201320535649.4U CN201320535649U CN203559776U CN 203559776 U CN203559776 U CN 203559776U CN 201320535649 U CN201320535649 U CN 201320535649U CN 203559776 U CN203559776 U CN 203559776U
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- sleeve pipe
- slips
- driving head
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Abstract
The utility model discloses a guiding and locking mechanism suitable for a driving head of a sleeve pipe. The guiding and locking mechanism comprises a middle shaft and a slip connected onto the middle shaft in a sleeving mode. The middle shaft is matched with the sleeve pipe and is used for ascending, descending and rotating the sleeve pipe via the slip. The guiding and locking mechanism suitable for the driving head of the sleeve pipe has following beneficial effects: in the structure of the slip, slip key grooves and gaps are arranged so that the sleeve pipe is locked or loosened in such two ways that a running tool drives the sleeve pipe to rotate or a driving mechanism is taken out and a drilling method of the sleeve pipe is conveniently applied; arranged latches have good adhesive force so that locking of the driving head of the sleeve pipe and a underground sleeve pipe wall are achieved; the sleeve pipe is inserted and is capable of adhering to the pipe wall so that mutual swing between the sleeve pipe and the driving mechanism for the sleeve pipe is reduced; during a whole process of connection with the sleeve pipe, the latches can be closely adhered to the inner wall of the sleeve pipe; and therefore the sleeve pipe is prevented from dropping down.
Description
Technical field
The utility model relates to a kind of guiding retaining mechanism that is applicable to sleeve pipe driving head, for using sleeve pipe to implement the drilling well of petroleum gas, belongs to the design and manufacturing technology field of drilling equipment.
Background technology
In conventional oil gas drilling process, due to the stratum geology characteristic of various places, often there will be hole shrinkage, cave-in, the down hole problems such as the keyway that Drilling causes and leakage, in this case, when after drilling well completes, the well cementation of enforcement setting of casing is rotated, card will be hampered in some wells, the even sleeve pipe having can not be lowered into the problems such as desired depth, while there are these situations, will cause construction can not reach the requirement of engineering design, the security incident that also there will be setting of casing process having, cause operating risk to increase, the consequences such as cost rising and construction period prolongation, the Casing Drilling Technique of prior art research, because sleeve pipe is along with drilling tool is lowered to stratum, therefore, on sleeve pipe is hampered Shi Jike, puts and put sleeve pipe, can connect again the circulating system circulates and rotates, contribute to solve the setting of casing problem that is hampered, improve the setting ability of sleeve pipe in bad hole, increase the safety that is lowered to sleeve pipe, reduce operating risk, and effectively avoided drillng operation cased process more later, therefore can effectively address the above problem, simultaneously in going down process, the instrument of sleeve pipe driving mechanism front end can be lowered to by guiding sleeve, can also play the effect of repairing the borehole wall and reaming, make the borehole wall more regular, thereby contribute to improve cementing quality, save time and cost.
Existing cased mode is: on rig floor by elevator, after a lower complete sleeve pipe, casing clamp under elevator, at this moment with suspension ring by an other sleeve pipe in elevator, screw casing threads, unclamp elevator, then setting of casing, by that analogy, the lower layer position to design.
The down hole problems such as the keyway that current mode causes as hole shrinkage, cave-in, Drilling in work progress and leakage, sleeve pipe can not continue to transfer.Existing solution is: (1) is carried sleeve pipe on the whole or transferred with suspension ring for several times.(2) as still continued to transfer sleeve pipe, can connect the circulating system, circulating fluid, rinses the borehole wall, then upper, carry or transfers sleeve pipe until well is dredged.(3) as still continued to transfer sleeve pipe through above two processes, just the sleeve pipe of G.I.H all need be taken out, then with drilling rod, connect drill bit and carry out wealthy eye and borehole wall reparation, well is all removed drilling rod after dredging, and is carrying out casing job.Above process will cause the consequences such as operating risk increase, cost rising and construction period prolongation.At present domestic is substantially all to adopt said method to implement cased construction, have also in sleeve pipe lower end with casing pipe drill shoe, still, existing casing pipe drill shoe function singleness can not meet that ring drilling fluid, guiding sleeve enter in well, the function of the reparation borehole wall simultaneously.
In order to address the above problem, China Patent No. " CN200320127812.X " discloses the hydraulic casing drive head for casing drilling under a kind of rotary drilling mode, and open day is on 02 23rd, 2005.In addition, China Patent No. " CN200320127963.5 " discloses the mechanical casing drive head for casing drilling under a kind of rotary drilling mode, and open day is on 02 23rd, 2005.But also there is following deficiency in this type of technology: one, the CN200320127812.X patent downward slurry conveyed of tube chamber that necessary unlatching slush pump passes through main shaft central authorities is in working order as promoting descent of piston power, whole device does not have locking mechanism, this method makes the working condition of driving head be subject to the immediate constraint of slush pump, if slush pump pump pressure shakiness easily causes operational failure, need well pump pressure to be controlled.Two, CN200320127812.X patent is the method that adopts back-moving spring that slips tooth and sleeve pipe are departed from, and this method exists back-moving spring fatigue, and incomplete problem causes during strength decreased resetting; Piston also may be because overhigh pumping pressure causes situation inter-adhesive and cannot be separation with the inclined-plane contact area of slips.Three, in CN200320127963.5 patent, the expansion of slips and the control that resets are by the control of big nut drive unit, although the method can lock control, complex operation to slips; Many ramp structures of slide key do not have guiding device, cause slips to exist in expansion and reseting procedure and cannot occur between two parties jam or the not firm phenomenon of locking.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that prior art exists, and a kind of guiding retaining mechanism that is applicable to sleeve pipe driving head is provided.Adopt the utility model can improve the setting ability of sleeve pipe in bad hole, increase the safety that is lowered to sleeve pipe, reduce operating risk.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A guiding retaining mechanism that is applicable to sleeve pipe driving head, is characterized in that: comprise axis and be socketed in the slips on axis, axis coordinates with sleeve pipe by slips for put-on and delegated and revoling tube.
Described axis comprises from top to bottom positioning section and drives section, is fixedly installed positioning key on positioning section, drives in section and is fixedly installed driving key, drive section surface to be the conical surface, and upper end diameter is less than lower end diameter.
Described slips one end is provided with the latch locking with internal surface of sleeve pipe, the other end is provided with and coordinates the spacing keyway that relatively rotates amplitude for controlling axis and slips with positioning key, on slips, be also provided with and the slips keyway that drives key to coordinate, axis is by driving key and slips keyway to drive slips rotation to be used for driving sleeve rotating; When slips is locked on sleeve pipe, slips is positioned at and drives in section.
The cylindrical structure of described slips, columnar structured one end arranges latch, and the other end is provided with slips half the circumference of the sleeve where it joins the shoulder, and spacing keyway is arranged on the end face of slips half the circumference of the sleeve where it joins the shoulder.
On described slips, be also provided with the gap for slips lower end external diameter is opened.
Described slips keyway and gap be equidistant four roads that are respectively set on the circumference of slips.
Described positioning key is one, and driving key is four, and one of them drives key and positioning key on same straight line.
On described axis, be respectively arranged with positioning spline and drive keyway, positioning key is arranged in positioning spline, drives key to be arranged on and drives in keyway.
Employing the utility model has the advantage of:
While one, occurring that in well the down hole problem setting of casings such as undergauge, cave-in, keyway and leakage are hampered, utilize the utility model both can put-on and delegated sleeve pipe, the circulating system be can connect again and mud circulation and revoling tube carried out, contribute to solve the setting of casing problem that is hampered, improve the setting ability of sleeve pipe in bad hole, increase the safety that is lowered to sleeve pipe, reduce operating risk.
Two, under the effect of the latch of the utility model on slips, when inserting after sleeve pipe, can be attached on casing wall, can effectively reduce the mutual swing between sleeve pipe and the utility model, and can guarantee in the whole process connecting with sleeve pipe, the latch of slips can fit tightly with internal surface of sleeve pipe, reaches the sleeve pipe accident that drops that prevents.
Three, adopt the utility model, can avoid when setting of casing must on detain this process, can save a large amount of activity durations.
Four, in the utility model, the cylindrical structure of described slips, columnar structured one end arranges latch, the other end is provided with slips half the circumference of the sleeve where it joins the shoulder, spacing keyway is arranged on the end face of slips half the circumference of the sleeve where it joins the shoulder, this structure is arranged on spacing keyway on the end face of slips half the circumference of the sleeve where it joins the shoulder, and high strength degree increases the safety that is lowered to sleeve pipe.
Five, in the utility model, be also provided with the gap for slips lower end external diameter is opened on described slips, during locking, slips has the planning function, adopts deformation, increases the frictional force of latch and internal surface of sleeve pipe, and lock ability is high.
Six, adopt after the utility model, in setting of casing process, can empty a certain amount of drilling fluid, under the effect of buoyancy, can make casing string suspend, alleviate derrick load.
Seven, the positioning key on spacing keyway and the axis on the slips in the utility model is used in conjunction with, make can only relatively rotate between slips and axis, thereby control the relative position that drives key and slips, slips surrounding has 4 slips keyways, coordinate four driving keys that are arranged on axis to use, make axis drive slips to rotate by driving key.
Eight, adopt the slips structure in the utility model, due to the slips keyway and the gap that arrange, can be lowered to tool drives rotation of sleeve as required, or take out driving mechanism and convert with the locking of sleeve pipe between the two or unclamp, be convenient to implement to use the mode of casing drilling; The latch arranging has good adhesive power, can effectively realize the locking with down-hole casing wall, when inserting after sleeve pipe, can be attached on casing wall, reduce the mutual swing between sleeve pipe and sleeve pipe driving mechanism, and can guarantee in the process all connecting with sleeve pipe, latch can fit tightly with internal surface of sleeve pipe, reaches the sleeve pipe accident that drops that prevents.
Accompanying drawing explanation
Fig. 1 is that the utility model is applied to the structural representation in sleeve pipe driving head
Fig. 2 is the structural representation of the utility model axis
Fig. 3 is the structural representation of the utility model slips
Fig. 4 is the end face structure schematic diagram of the utility model slips half the circumference of the sleeve where it joins the shoulder
Fig. 5 is the end face structure schematic diagram of the utility model latch
Fig. 6 is lower contact and the sealing ring syndeton schematic diagram of sleeve pipe driving head
Fig. 7 is the inwall centralizer structure schematic diagram of sleeve pipe driving head
Fig. 8 is the cross section structure schematic diagram of sleeve pipe driving head inwall centralizer
In figure, be labeled as: 1, variable buckle joint, 2, axis, 3, set bolt, 4, positioning key, 5, slips, 6, drive key, 7, lower contact, 8, sealing ring, 9, inwall centralizer, 10, joint half the circumference of the sleeve where it joins the shoulder, 11, positioning section, 12, latch, 13, drive section, 14, slips half the circumference of the sleeve where it joins the shoulder, 15, positioning spline, 16, drive keyway, 17, gap, 18, slips keyway, 19, centering edge, 20, spacing keyway.
The specific embodiment
embodiment 1
Be applicable to a guiding retaining mechanism for sleeve pipe driving head, comprise axis 2 and be socketed in the slips 5 on axis 2, axis 2 coordinates with sleeve pipe for put-on and delegated and revoling tube by slips 5.
In the utility model, described axis 2 comprises from top to bottom positioning section 11 and drives section 13, is fixedly installed positioning key 4 on positioning section 11, drives in section 13 and is fixedly installed and drives key 6, drive section 13 surfaces to be the conical surface, and upper end diameter is less than lower end diameter.
In the utility model, described slips 5 one end are provided with the latch 12 locking with internal surface of sleeve pipe, the other end is provided with and coordinates the spacing keyway 20 that relatively rotates amplitude for controlling axis 2 and slips 5 with positioning key 4, on slips 5, be also provided with and the slips keyway 18 that drives key 6 to coordinate, axis 2 is by driving key 6 and slips keyway 18 to drive slips 5 to rotate for driving sleeve rotating; When slips 5 is locked on sleeve pipe, slips 5 is positioned at and drives in section 13.
In the utility model, the cylindrical structure of described slips 5, columnar structured one end arranges latch 12, and the other end is provided with slips half the circumference of the sleeve where it joins the shoulder 14, and spacing keyway 20 is arranged on the end face of slips half the circumference of the sleeve where it joins the shoulder 14.
In the utility model, on described slips 5, be also provided with the gap 17 for slips 5 lower end external diameters are opened.
In the utility model, described slips keyway 18 and gap 17 be equidistant four roads that are respectively set on the circumference of slips 5.
In the utility model, described positioning key 4 is one, and driving key 6 is four, and one of them drives key 6 and positioning key 4 on same straight line.
In the utility model, be respectively arranged with positioning spline 15 and drive keyway 16 on described axis 2, positioning key 4 is arranged in positioning spline 15, drives key 6 to be arranged on and drives in keyway 16.
Thereby have much for axis and slips being relatively rotated slips is locked on sleeve pipe or with the structure of sleeve pipe solution, it is preferred forms that the utility model adopts said structure, not only intensity is guaranteed, and can obviously improve the setting ability of sleeve pipe in bad hole, increase the safety that is lowered to sleeve pipe, reduce operating risk.
The present embodiment is applied in sleeve pipe driving head and describes the utility model:
Sleeve pipe driving head comprises variable buckle joint 1, guiding retaining mechanism, righting sealing mechanism; The two ends of variable buckle joint 1 are all boxes, connect drilling tool when one end is used for constructing, and one end connects axis 2.
Guiding retaining mechanism comprises axis 2, positioning key 4, slips 5, drives key 6 and lower contact 7, and axis 2 one end are pin thread, the other end is box, pin thread and box end at axis 2 are respectively arranged with positioning spline 15 and drive keyway 16, are provided with positioning key 4 in positioning spline 15, in driving keyway 16, are provided with and drive key 6, positioning key 4 is fixed in positioning spline 15 by set bolt 3, drives key 6 to be fixed on and to be driven in keyway 16 by set bolt 3; Slips 5 is enclosed within on the cylindrical of axis 2, slips 5 be one columnar structured, one end of slips 5 is latch 12, the other end is slips half the circumference of the sleeve where it joins the shoulder 14, between latch 12 and slips half the circumference of the sleeve where it joins the shoulder 14, be provided with slips keyway 18 and gap 17, slips keyway 18 and gap 17 be equidistant four roads that respectively arrange on the circumference of slips 5, coordinate four driving keys 6 that are arranged on axis 2 to use, and axis 2 is by driving key 6 to drive slips 5 to rotate.
The spacing keyway 20(that is provided with a miter angle on the end face of slips half the circumference of the sleeve where it joins the shoulder 14 is not limited to 45 degree, only as an example of 45 degree example, illustrate), coordinate the positioning key 4 being arranged on axis 2 to use, make can only relatively rotate 45 degree between slips 5 and axis 2, thereby control the relative position that drives key 6 and slips 5.The box end of axis 2 connects lower contact 7.
Righting sealing mechanism comprises lower contact 7, sealing ring 8 and inwall centralizer 9, the one end that connects inwall centralizer 9 in lower contact 7 is provided with joint half the circumference of the sleeve where it joins the shoulder 10, the lower end of lower contact 7 connects inwall centralizer 9, between joint half the circumference of the sleeve where it joins the shoulder 10 and inwall centralizer 9, be provided with sealing ring 8, on the cylindrical of inwall centralizer 9, be provided with centering edge 19.
The installation of sleeve pipe driving head connects: take variable buckle joint 1 as upper end, inwall centralizer 9 for lower end be example, after each unit check of processing is qualified, by clean Cleaning of Parts to be assembled, connection of thread is coated dope, and the defect of impact sealings such as must not scratching, damage while checking each sealing surface and potted component assembling exists, then the interior positioning key 4 that arranges of the positioning spline 15 on axis 2, driving interior setting of keyway 16 to drive key 6, and fixed by set bolt 3, then axis 2 is inserted in slips 5, again the upper end pin thread spiral of axis 2 is connected on the lower end box of variable buckle joint 1, then the pin thread of lower contact 7 is threaded on the box of axis 2 lower ends, sealing ring 8 is sleeved on to the lower surface of lower contact half the circumference of the sleeve where it joins the shoulder 10, then inwall centralizer 9 is connected to the lower end of lower contact 7, and tighten the screw thread of each joint, lubrication oil is coated on surface at the each parts that have phase mutual friction, just completed the assembling of sleeve pipe driving head.
The use procedure of sleeve pipe driving head: mainly contain three courses of work, the one, insert the process in sleeve pipe, the 2nd, the process that drives sleeve pipe to rotate together, the 3rd, from the process of extracting out in sleeve pipe.
Insert the process of sleeve pipe: under the drive of drilling tool, by inwall centralizer 9 guiding sleeve driving heads, entered in sleeve pipe, enter in the sleeve pipe of down-hole, because the latch 12 on slips 5 is attached on sleeve pipe, therefore, when axis 2 rotates, slips 5 can not rotate, the spacing keyway 20 of the miter angle arranging in the inner circle due to the slips half the circumference of the sleeve where it joins the shoulder 14 at slips 5 in addition can only do the left or right of miter angle and rotate in the spacing keyway 20 of this miter angle when axis 2 is rotated, therefore, when axis 2 is rotated counterclockwise miter angle, axis 2 is the high order end with slips keyway 18 in positioning key 4, now between positioning key 4 and slips keyway 18, there is the angle of one 45 degree, due to positioning key 4 with drive key 6 in same straight line, so drive key 6 can not enter slips keyway 18, therefore drive key 6 be withstand slips 5 bottom, then continue pressurization, variable buckle joint 1 is moved downward, until variable buckle joint 1, slips shoulder 14 overlaps with casing coupling three, miter angle again turns clockwise, axis 2 is the low order end with slips keyway 18 in positioning key 4 just, positioning key 4 is overlapped with slips keyway 18, at this moment, drive key 6 and slips keyway 18 places point-blank, because the position that driving key 6 is set on axis 2 is the diameter amplifying gradually, therefore at the interlude of axis 2, formed a middle conical surface of shaft, due to the reason of the latch 12 on slips 5, when on while carrying drilling tool, slips can not moved together with axis 2, but move downward along the conical surface of axis 2, at this moment, because the gap arranging on slips 17, the external diameter of slips facing can open increase, until locked with casing inner diameter, complete the locking with sleeve pipe.
The process that drives sleeve pipe to rotate together: when running into the problems such as hole shrinkage or hole collapse, first according to two processes above by sleeve pipe driving head G.I.H, and complete and the locking of sleeve pipe, then by the rotation of drilling tool, make to drive key to enter slips keyway, by axis, drive slips to rotate, thereby drive sleeve pipe to rotate together, realize the object of sleeve rotating, the casing pipe drill shoe that coordinates bottom to install, just can realize the reparation of the borehole wall with reaming function.
From the process of extracting out in sleeve pipe: when a sleeve pipe transfer complete after, in the time of need to separately connecing a sleeve pipe, sleeve pipe driving head is extracted out in sleeve pipe; First by drilling tool, press down variable buckle joint 1, make variable buckle joint 1, slips shoulder 14 overlaps with casing coupling three, at this moment, the latch 12 of slips 5 has left the conical surface of axis 2, and latch 12 is unclamped from the state of locking, then be rotated counterclockwise 45 degree, make to drive key 6 to withstand slips bottom, now slips 5 is driven key 6 to withstand, and can not move downward along the conical surface of axis 2, therefore upper while carrying drilling tool, slips external diameter can not increase; Again, carry variable buckle joint 1, and drive sleeve pipe driving head all in sleeve pipe, to extract out.
The present embodiment is described as follows the method for operating that adopts sleeve pipe driving head of the present utility model:
Implement before casing drilling, first the sleeve pipe driving head of needs is ready to, during enforcement, first at first, need the sleeve pipe lower end of G.I.H to connect brill footwear and float collar, the single joint elevator re-using on rig is mentioned first sleeve pipe that connects brill footwear and float collar, put it in well, and use casing slip by first casing clamp in rotating disk, then on drilling tool, connect sleeve pipe driving head.
Then transfer drilling tool, sleeve pipe driving head is inserted in first sleeve pipe being placed on rotating disk, start rig, drilling tool is turned right, drive sleeve pipe driving head right-hand rotation 45 degree (only with 45 degree, to illustrate, be not limited to 45 degree), then on, carry drilling tool, at this moment the strong groove of the driving key on sleeve pipe driving head and positioning key and slips, on a straight line, is above carried drilling tool and is made slips in the situation that of the conical surface, become large, therefore, the slips on sleeve pipe driving head will be locked on casing inner diameter.
Then, upwards carry drilling tool, take out casing slip, transfer drilling tool, drill with ferrule pole socket is entered to rotating disk, turn on pump, under the driving of rotating disk, power can reach sleeve pipe actuating sleeve, and drives casing drilling, slowly increases the pressure of the drill and rotating speed, until by complete first Sleeve drill.
After first Sleeve drill is complete, if in the time of need to beating thickened drilling fluid special bags of willow branches, framed by bamboo, for building dykes well, first special bags of willow branches, framed by bamboo, for building dykes well, if do not need special bags of willow branches, framed by bamboo, for building dykes well, just directly termination of pumping, stops rig and rotates, then will on sleeve pipe, carry to rotating disk, seat upper slips, is stuck in the upper end of first sleeve pipe on rotating disk.
Then transfer drilling tool, promote sleeve pipe driving head downward, at this moment, the conical surface on sleeve pipe driving head exits downwards from slips, release, the slips of relief sleeve driving head, then rotation drilling tool, drive sleeve pipe driving head left-hand rotation 45 degree, more upwards carry drilling tool, in well, propose sleeve pipe driving head.
Reuse card second sleeve pipe of slinging, insert on the sleeve pipe of deck in rotating disk, use on power casing tongs and detain and tighten.
And then transfer drilling tool, sleeve pipe driving head is inserted in second sleeve pipe being placed on rotating disk, start rig, drilling tool is turned right, drive sleeve pipe driving head right-hand rotation 45 degree, then on, carry drilling tool, at this moment the driving key on sleeve pipe driving head and positioning key and slips keyway are again on a straight line, on carry drilling tool slips become greatly the in the situation that of the conical surface, therefore, the slips on sleeve pipe driving head will be locked on casing inner diameter, then lay down the casing slip on rotating disk, transfer sleeve pipe to shaft bottom, turn on pump is implemented casing drilling, until second sleeve pipe all pierces; After second Sleeve drill is complete, repeat to implement above-mentioned steps, until arrive design well depth.
Claims (7)
1. a guiding retaining mechanism that is applicable to sleeve pipe driving head, is characterized in that: comprise axis (2) and be socketed in the slips (5) on axis (2), axis (2) coordinates with sleeve pipe for put-on and delegated and revoling tube by slips (5).
2. a kind of guiding retaining mechanism that is applicable to sleeve pipe driving head according to claim 1, it is characterized in that: described axis (2) comprises from top to bottom positioning section (11) and drives section (13), on positioning section (11), be fixedly installed positioning key (4), drive in section (13) and be fixedly installed and drive key (6), drive section (13) surface to be the conical surface, and upper end diameter is less than lower end diameter.
3. a kind of guiding retaining mechanism that is applicable to sleeve pipe driving head according to claim 2, it is characterized in that: described slips (5) one end is provided with the latch (12) locking with internal surface of sleeve pipe, the other end is provided with and coordinates the spacing keyway (20) that is used for controlling axis (2) and slips (5) and relatively rotates amplitude with positioning key (4), on slips (5), be also provided with and the slips keyway (18) that drives key (6) to coordinate, axis (2) is by driving key (6) and slips keyway (18) to drive slips (5) rotation to be used for driving sleeve rotating; When slips (5) is locked on sleeve pipe, slips (5) is positioned at and drives in section (13).
4. a kind of guiding retaining mechanism that is applicable to sleeve pipe driving head according to claim 3, it is characterized in that: the cylindrical structure of described slips (5), columnar structured one end arranges latch (12), the other end is provided with slips half the circumference of the sleeve where it joins the shoulder (14), and spacing keyway (20) is arranged on the end face of slips half the circumference of the sleeve where it joins the shoulder (14).
5. according to arbitrary described a kind of guiding retaining mechanism that is applicable to sleeve pipe driving head in claim 1-4, it is characterized in that: on described slips (5), be also provided with the gap (17) for slips (5) lower end external diameter is opened.
6. a kind of guiding retaining mechanism that is applicable to sleeve pipe driving head according to claim 5, is characterized in that: described slips keyway (18) and gap (17) are equidistant four roads that are respectively set on the circumference of slips (5).
7. a kind of guiding retaining mechanism that is applicable to sleeve pipe driving head according to claim 4, is characterized in that: described positioning key (4) is one, and driving key (6) is four, and one of them drives key (6) and positioning key (4) on same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320535649.4U CN203559776U (en) | 2013-08-30 | 2013-08-30 | Guiding and locking mechanism suitable for driving head of sleeve pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320535649.4U CN203559776U (en) | 2013-08-30 | 2013-08-30 | Guiding and locking mechanism suitable for driving head of sleeve pipe |
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| Publication Number | Publication Date |
|---|---|
| CN203559776U true CN203559776U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320535649.4U Expired - Lifetime CN203559776U (en) | 2013-08-30 | 2013-08-30 | Guiding and locking mechanism suitable for driving head of sleeve pipe |
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| CN (1) | CN203559776U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437707A (en) * | 2013-08-30 | 2013-12-11 | 中国石油集团川庆钻探工程有限公司 | Guiding and locking mechanism suitable for casing pipe driving head |
| CN104266033A (en) * | 2014-09-19 | 2015-01-07 | 中国石油天然气集团公司 | Integral zigzag slip for pipeline |
-
2013
- 2013-08-30 CN CN201320535649.4U patent/CN203559776U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437707A (en) * | 2013-08-30 | 2013-12-11 | 中国石油集团川庆钻探工程有限公司 | Guiding and locking mechanism suitable for casing pipe driving head |
| CN103437707B (en) * | 2013-08-30 | 2016-08-10 | 中国石油集团川庆钻探工程有限公司 | It is applicable to the guiding retaining mechanism of sleeve pipe driving head |
| CN104266033A (en) * | 2014-09-19 | 2015-01-07 | 中国石油天然气集团公司 | Integral zigzag slip for pipeline |
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| GR01 | Patent grant | ||
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Granted publication date: 20140423 |
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| CX01 | Expiry of patent term |