CN207944895U - A kind of telescopic setting of casing segmentation tool - Google Patents
A kind of telescopic setting of casing segmentation tool Download PDFInfo
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- CN207944895U CN207944895U CN201721879919.8U CN201721879919U CN207944895U CN 207944895 U CN207944895 U CN 207944895U CN 201721879919 U CN201721879919 U CN 201721879919U CN 207944895 U CN207944895 U CN 207944895U
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- inner cylinder
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Abstract
The utility model is related to a kind of telescopic setting of casing segmentation tools, including top connection, upper sleeve gasket, outer barrel, fan-shaped key, inner cylinder, lower sleeve gasket, lower contact, primary seal combination and primary seal combination.Top connection is connect with outer barrel threaded upper ends, lower sleeve gasket is connect with outer barrel lower thread, inner cylinder is threadedly coupled across outer barrel with lower contact, inner cylinder upper end is threadedly coupled with upper sleeve gasket, fan-shaped key is arranged between outer barrel and the mutually matched supporting block group of inner cylinder, torque can be mutually transmitted, tension and compression and suspended load are born.This tool is used to separate the casing string of high frictional resistance well section, convenient for using the relevant technologies measure antifriction this section of casing of tripping in, hypomere tubing string axially free can stretch with respect to epimere casing string, epimere casing string can rotate, pulls or impact lower end casing string and promote hypomere casing string tripping in, achieve the purpose that the tripping in casing under high frictional resistance borehole status.
Description
Technical field
The utility model is related to oil gas field shaft construction technical field of tools more particularly to a kind of telescopic setting of casing segmentations
Tool.
Background technology
With unconventionaloil pool field, the exploitation of marine oil on the land oil gas field, extended reach well, long horizontal sections horizontal well are increasingly
It is more, the reasons such as geological conditions, orientation construction level are typically due to, wellbore will appear big, the real bored borehole rail of track rate of over-all angle change
Mark is poor, and lower curved section occurs that one or more dog-leg severity extreme value inflection points, hole enlargement ratio be big, drilling fluid density higher engineering problem,
Cased frictional resistance is considerably increased, it is extremely difficult to design well depth under casing to make.It traps for high frictional resistance wellbore
Pipe, can be segmented casing string according to wellbore frictional resistance distribution situation, the casing string in high frictional resistance well section is separated out
Come, the casing string relative to relatively low frictional resistance can use specific aim with axial stretching activity for this section of casing of high frictional resistance well section
Technical measures, overcome frictional resistance decentralization in place, and then the entire casing string of tripping in.
Invention content
In view of the above-mentioned problems, the utility model provides a kind of telescopic setting of casing segmentation tool, for separating casing string
The casing string of middle high frictional resistance well section, convenient for use the relevant technologies measure antifriction this section of casing of tripping in, hypomere tubing string relatively on
Section casing string axially free can stretch, and epimere casing string can rotate, pulls or impact lower end casing string and promote hypomere casing string
Tripping in achievees the purpose that the tripping in casing under high frictional resistance borehole status.
Technical solution adopted by the utility model to solve its technical problems is：
A kind of telescopic setting of casing segmentation tool, including top connection, cylinder and lower contact, the cylinder are outer barrel and interior
Cylinder axial direction grafting sealing cooperation, top connection are connect with outer barrel threaded upper ends, and inner cylinder passes through outer barrel and lower contact screw thread
Connection；Circumferentially disposed bumps keyway, circumferentially disposed and inner cylinder on the inner wall of outer barrel hypomere on the outer wall of inner cylinder epimere
On concave-convex keyway grafting, blocking cooperation inner support block group.
Said program further comprises：
Upper sleeve gasket is connected in the upper end of inner cylinder, upper sleeve gasket slides axially with outer barrel inner wall composition and seals cooperation；
Lower sleeve gasket is connected in outer barrel lower end, lower sleeve gasket slides axially with inner cylinder composition and seals cooperation.
Upper sleeve gasket outer wall top is disposed with outer guiding trough of belt, seal groove, and matches with outer guiding trough of belt, seal groove
Outer guidance tape, the sealing ring closed, is limit pin hole coordinate with spacer pin in the middle part of upper sleeve gasket, spacer pin and meanwhile with inner cylinder top
The limiting slot of portion's setting constitutes axial limiting cooperation, and upper sleeve gasket lower part is the internal thread being connect with inner cylinder；The lower sealing
Set inner wall lower is disposed with interior guiding trough of belt, seal groove, and is oriented to trough of belt, the interior guidance tape of seal groove cooperation, sealing with interior
Circle, lower sleeve gasket outer wall top is the external screw thread being connect with outer barrel.
The interval setting 1-5 roads outer support block group below the concave-convex keyway of interior cylinder body outer wall, each outer support block road with it is upper
The convex key of the concave-convex keyway of side is corresponding；In the inner support block group interval of the outer cylinder inboard wall roads setting 1-5.
Fan-shaped key is set between outer barrel and the mutually matched inner support block group of inner cylinder and outer support block group.
It is additionally provided with primary seal combination in interior outer barrel engaging portion, primary seal combination includes being arranged on outer cylinder inboard wall
O-ring seal and primary seal set.
The outer barrel and inner cylinder are thin-wall barrel, and outer barrel outer wall and inner cylinder inner wall are equal diameter cylinder,
And the internal diameter of inner cylinder is consistent with the internal diameter connected up and down.
The utility model compared with the existing technology, has following advantageous effect：
1, telescopic setting of casing segmentation tool internal diameter is identical as respective sleeve internal diameter, and outer diameter is slightly larger than casing joint outer diameter,
Two end connectors use ordinary casing screw thread, which can separate the casing string in high frictional resistance borehole segments, convenient for pair
This section of casing string uses specific aim tripping in measure.
2, the sealing means that telescopic setting of casing segmentation tool is combined using primary seal and primary seal, primary seal combination
For scraping mud sand block, the safe and reliable work of primary seal combination is ensured, primary seal combination kinetic frictional resistances are small, long working life.
3, for telescopic setting of casing segmentation tool using multistage support block structure, tool inner cylinder can be axial relative to outer barrel
It freely stretches, inner cylinder and outer barrel can transmit and carry rotation, dragging or shock loading.
Description of the drawings
Fig. 1 is a kind of telescopic setting of casing segmentation tool complete section structure chart；
Fig. 2 is I partial enlarged views in Fig. 1, i.e. tool primary seal combination assumption diagram；
Fig. 3 is II partial enlarged views in Fig. 1, i.e. tool primary seal combination assumption diagram；
Fig. 4 is inner tube structure figure；
Fig. 5 is outer tube structure figure；
Fig. 6 is upper sleeve gasket structure chart；
Fig. 7 is lower sleeve gasket structure chart.
In figure：Top connection 1, upper sleeve gasket 2, spacer pin 3, outer barrel 4, fan-shaped key 5, inner cylinder 6, lower sleeve gasket 7, under connect
First 8, c-type slip ring 9, primary seal set 10, outer guidance tape 11, outer guiding trough of belt 201, limit pin hole 202, seal groove 203, internal thread
204, the screw thread 401 that is connect with top connection, static seal face 402, inner support block group 403, the screw thread 404 being connect with lower sleeve gasket,
The spiral shell that limiting slot 601, the screw thread 602 being connect with upper sleeve gasket, primary seal slot 603, outer support block group 604, is connect with lower contact
Line 605, seal groove 606, external screw thread 701, seal groove 702, interior guiding trough of belt 703.
Specific implementation mode
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of telescopic setting of casing segmentation tool that the utility model is mentioned, including top connection
1, upper sleeve gasket 2, spacer pin 3, outer barrel 4, fan-shaped key 5, inner cylinder 6, lower sleeve gasket 7, lower contact 8, c-type slip ring 9, primary seal
Set 10, outer guidance tape 11, primary seal combination II and primary seal combine I.
Top connection 1 is connect with 4 threaded upper ends of outer barrel, and lower sleeve gasket 7 is connect with 4 lower thread of outer barrel, and inner cylinder 6 is worn
It crosses outer barrel 4 to be threadedly coupled with lower contact 8,6 upper end of inner cylinder is threadedly coupled with upper sleeve gasket 2, fan-shaped by 3 rotation stop of spacer pin
Key 5 is placed between 6 mutually matched supporting block group of outer barrel 4 and inner cylinder, by lower sleeve gasket 7 limit fix, outer barrel 4 with it is interior
Cylinder 6 mutually transmits torque by fan-shaped key 5, and tension and compression and suspended load, supporting block group axial spacing are born by supporting block group
Ensure that outer barrel 4 can be coordinated with O-ring, be arranged in axially free movable certain size, the opening face of c-type slip ring 9 with inner cylinder 6
Upper sleeve gasket 2 and 7 corresponding position of lower sleeve gasket form tool primary seal with outer guidance tape 11 and combine II together, realize that sand block is scraped
Mud, c-type slip ring are arranged in 10 both sides of primary seal set composition tool primary seal with O-ring and combine I.
As shown in figure 4, inner cylinder 6 is thin-wall barrel, inside is equal diameter cylinder, identical as respective sleeve internal diameter, outside
Top is limiting slot 601, the screw thread being connect with upper sleeve gasket 602 and primary seal slot 603 successively, and limiting slot 602 is matched with spacer pin 3
It shares and loosens in screw thread, be the outer support block group 604 of axial and circumferential arrangement below, outer support block group 604 is circumferential each other
Itself radian of the radian of gap and block is identical, and axial spacing is more than outer support block axial length and is axially moveable apart from it with tool
With the four sides of, inner support block for bearing to draw, pressure and torsional load, outside lower end is the screw thread 605 being connect with lower contact and quiet
Seal groove 606.
As shown in figure 5, outer barrel 4 is thin-wall barrel, outside is equal diameter cylinder, and inner top side is connect with top connection
Screw thread 401, under be static seal face 402, middle and lower part axial and circumferential arrange that inner support block group 403, inner support block group 403 are circumferential
Mutual itself radian of radian and block in gap is identical, axial spacing is more than inner support block axial length and tool be axially moveable away from
The sum of from, the four sides of inner support block is used to bear to draw, pressure and torsional load, cylinder inside lower end are the spiral shells being connect with lower sleeve gasket
Line 404.
As shown in fig. 6, upper sleeve gasket 2 is shell-like revolving body, cylinder outer upper end is sequentially arranged outer guiding trough of belt 201, close
Sealing groove 203, centre are through the limit pin hole 202 of barrel, and cylinder inside lower end is internal thread 204.
As shown in fig. 7, lower sleeve gasket 7 is shell-like revolving body, cylinder inside lower end is sequentially arranged interior guiding trough of belt 703, close
Sealing groove 702, cylinder outer upper end are external screw threads 701.
A kind of telescopic setting of casing segmentation tool that the utility model is mentioned, the use process is as follows:In design of casing string
Stage determines that telescopic sleeve pipe segmentation tool riding position, the entire casing string of tool point are upper according to wellbore frictional resistance distribution situation
Lower two sections, hypomere tubing string axially free can stretch with respect to epimere casing string, and tool top connection 1 connects epimere casing, and lower contact 8 connects
Hypomere casing is connect, hypomere tubing string antifriction under other technical measures advances, and inner cylinder 6 is stretched out with respect to outer barrel 4, epimere pipe
Column leans on gravity tripping in, inner cylinder 6 to retract with respect to outer barrel 4, and epimere casing string can rotate, pulls and impact lower end casing string and promote
Make hypomere casing string tripping in, 6 inner support block of outer barrel can axially bear to hang and push impact load with 4 outer support block of inner cylinder at this time
Lotus, to achieve the purpose that high frictional resistance well bore casing tripping in.
Claims (7)
1. a kind of telescopic setting of casing segmentation tool, including top connection, cylinder and lower contact, it is characterized in that：The cylinder is outer
Cylinder and inner cylinder axial direction grafting sealing cooperation, top connection are connect with outer barrel, and inner cylinder is connect across outer barrel with lower contact；
The circumferentially disposed bumps keyway on the outer wall of inner cylinder epimere, on the inner wall of outer barrel hypomere it is circumferentially disposed with it is recessed on inner cylinder
The inner support block group of the grafting of convex key slot, blocking cooperation.
2. telescopic setting of casing segmentation tool according to claim 1, it is characterized in that：In the upper end of inner cylinder, connection is upper close
Big envelope, upper sleeve gasket slide axially with outer barrel inner wall composition and seal cooperation；Lower sleeve gasket, lower sealing are connected in outer barrel lower end
Set slides axially with inner cylinder composition and seals cooperation.
3. telescopic setting of casing segmentation tool according to claim 2, it is characterized in that：Upper sleeve gasket outer wall top cloth
It is equipped with outer guiding trough of belt, seal groove, and outer guidance tape, the sealing ring coordinated with outer guiding trough of belt, seal groove, in upper sleeve gasket
Portion is the limit pin hole coordinated with spacer pin, and spacer pin constitutes axial limiting with the limiting slot being arranged at the top of inner cylinder simultaneously and matches
It closes, upper sleeve gasket lower part is the internal thread being connect with inner cylinder；The lower sleeve gasket inner wall lower is disposed with interior guiding trough of belt, close
Sealing groove, and with interior guiding trough of belt, interior guidance tape, the sealing ring of seal groove cooperation, lower sleeve gasket outer wall top is and outer barrel
The external screw thread of connection.
4. the telescopic setting of casing segmentation tool according to claims 1 or 2,3, it is characterized in that：In the recessed of interior cylinder body outer wall
The roads interval setting 1-5 outer support block group, each outer support block road are corresponding with the convex key of concave-convex keyway of top below convex key slot；
In the inner support block group interval of the outer cylinder inboard wall roads setting 1-5.
5. telescopic setting of casing segmentation tool according to claim 4, it is characterized in that：In outer barrel and inner cylinder phase interworking
Fan-shaped key is set between the inner support block group and outer support block group of conjunction.
6. telescopic setting of casing segmentation tool according to claim 5, it is characterized in that：It is also set in interior outer barrel engaging portion
It is equipped with primary seal combination, primary seal combination includes the O-ring seal being arranged on outer cylinder inboard wall and primary seal set.
7. telescopic setting of casing segmentation tool according to claim 6, it is characterized in that：The outer barrel and inner cylinder are
Thin-wall barrel, outer barrel outer wall and inner cylinder inner wall are equal diameter cylinder, and the internal diameter of inner cylinder and the internal diameter one that connects up and down
It causes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721879919.8U CN207944895U (en) | 2017-12-28 | 2017-12-28 | A kind of telescopic setting of casing segmentation tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721879919.8U CN207944895U (en) | 2017-12-28 | 2017-12-28 | A kind of telescopic setting of casing segmentation tool |
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| Publication Number | Publication Date |
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| CN207944895U true CN207944895U (en) | 2018-10-09 |
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| CN201721879919.8U Active CN207944895U (en) | 2017-12-28 | 2017-12-28 | A kind of telescopic setting of casing segmentation tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973023A (en) * | 2017-12-28 | 2019-07-05 | 中石化石油工程技术服务有限公司 | A kind of telescopic setting of casing segmentation tool |
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2017
- 2017-12-28 CN CN201721879919.8U patent/CN207944895U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973023A (en) * | 2017-12-28 | 2019-07-05 | 中石化石油工程技术服务有限公司 | A kind of telescopic setting of casing segmentation tool |
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