CN109973023A - A kind of telescopic setting of casing segmentation tool - Google Patents
A kind of telescopic setting of casing segmentation tool Download PDFInfo
- Publication number
- CN109973023A CN109973023A CN201711464890.1A CN201711464890A CN109973023A CN 109973023 A CN109973023 A CN 109973023A CN 201711464890 A CN201711464890 A CN 201711464890A CN 109973023 A CN109973023 A CN 109973023A
- Authority
- CN
- China
- Prior art keywords
- inner cylinder
- cylinder
- sleeve gasket
- wall
- casing
- 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.)
- Pending
Links
- 230000011218 segmentation Effects 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a kind of telescopic setting of casing segmentation tools, including top connection, upper sleeve gasket, outer cylinder, fan-shaped key, inner cylinder, lower sleeve gasket, lower contact, primary seal combination and primary seal combination.Top connection is connect with outer cylinder threaded upper ends, lower sleeve gasket is connect with outer cylinder lower thread, inner cylinder passes through outer cylinder and is threadedly coupled with lower contact, inner cylinder upper end is threadedly coupled with upper sleeve gasket, fan-shaped key is arranged between outer cylinder 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 this section of casing of the relevant technologies measure antifriction tripping in, lower section tubing string axially free can stretch with respect to upper section casing string, upper section casing string can rotate, pulls or impact lower end casing string and promote lower section casing string tripping in, achieve the purpose that the tripping in casing under high frictional resistance borehole status.
Description
Technical field
The present invention relates to oil gas field shaft construction technical field of tools more particularly to a kind of telescopic setting of casing to be segmented work
Tool.
Background technique
With unconventional oil and gas 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, to make extremely difficult to design well depth under casing.It traps for high frictional resistance wellbore
Pipe, can be segmented casing string according to wellbore frictional resistance distribution situation, and the casing string in high frictional resistance well section is separated out
Come, the casing string relative to lower frictional resistance can use specific aim for this section of casing of high frictional resistance well section with axial stretching activity
Technical measures, overcome frictional resistance decentralization in place, and then the entire casing string of tripping in.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of telescopic setting of casing segmentation tool, it is high in casing string for separating
The casing string of frictional resistance well section, convenient for using this section of casing of the relevant technologies measure antifriction tripping in, lower section tubing string is with respect to upper section set
Tubing string axially free can stretch, and upper section casing string can rotate, pulls or impact lower end casing string and promote lower section casing string tripping in,
Achieve the purpose that the tripping in casing under high frictional resistance borehole status.
The technical solution adopted by the present invention to solve the 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 inner cylinder
Axial grafting sealing cooperation, top connection are connect with outer barrel threaded upper ends, and inner cylinder passes through outer barrel and is threadedly coupled with lower contact；
Concave-convex keyway is circumferentially set on the outer wall of inner cylinder upper section, on the inner wall of outer barrel lower section circumferentially setting with it is recessed on inner cylinder
The grafting of convex key slot, the inner support block group for stopping cooperation.
Above scheme further comprises:
Upper sleeve gasket is connected in the upper end of inner cylinder, upper sleeve gasket and outer barrel inner wall composition slide axially and seal cooperation；Outside
Cylinder lower end connects lower sleeve gasket, and lower sleeve gasket and inner cylinder composition slide axially and seal 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 the limit pin hole with spacer pin cooperation in the middle part of upper sleeve gasket, spacer pin simultaneously with inner cylinder top
The limiting slot of portion's setting constitutes axial limiting cooperation, and upper sleeve gasket lower part is the internal screw thread connecting 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 connecting with outer barrel.
Below the concave-convex keyway of interior cylinder body outer wall interval setting the road 1-5 outer support block group, each outer support block road with it is upper
The convex key of the concave-convex keyway of side is corresponding；At the inner support block group interval of outer cylinder inboard wall, the road 1-5 is set.
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 present invention compared with the existing technology, have it is following the utility model has the advantages that
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, both ends
Connector uses ordinary casing screw thread, which can separate the casing string in high frictional resistance borehole segments, convenient for the section
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
Free extension, inner cylinder and outer barrel can transmit and carry rotation, dragging or shock loading.
Detailed description of the invention
Fig. 1 is a kind of telescopic setting of casing segmentation tool complete section structure chart；
Fig. 2 is I partial enlarged view in Fig. 1, i.e. tool primary seal combination assumption diagram；
Fig. 3 is II partial enlarged view 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 cover 10, outer guidance tape 11, outer guiding trough of belt 201, limit pin hole 202, seal groove 203, internal screw thread
204, the screw thread 401 that is connect with top connection, static sealing surface 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 connecting 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 embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of telescopic setting of casing segmentation tool that the present invention mentions, including top connection 1, on
Sealing shroud 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 outer barrel 4 and the mutually matched supporting block group of inner cylinder 6, by lower sleeve gasket 7 limit fix, outer barrel 4 with it is interior
Cylinder 6 passes through fan-shaped key 5 mutually transmitting torque, bears tension and compression and suspended load, supporting block group axial spacing by supporting block group
Ensure that outer barrel 4 and inner cylinder 6 can be cooperated, are arranged in axially free movable certain size, the opening face of c-type slip ring 9 and O-ring
Upper sleeve gasket 2 and 7 corresponding position of lower sleeve gasket form tool primary seal together with outer guidance tape 11 and combine II, realize that sand block is scraped
Mud, c-type slip ring are arranged in 10 two 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, outside identical as respective sleeve internal diameter
Top is successively limiting slot 601, the screw thread connecting with upper sleeve gasket 602 and primary seal slot 603, 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
The radian of gap is identical as block itself radian, and axial spacing is greater than outer support block axial length and tool is axially moveable apart from it
With the four sides of, inner support block for bearing to draw, pressure and torsional load, outside lower end is the screw thread 605 connecting 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 sealing surface 402, middle and lower part axial and circumferential arrange that inner support block group 403, inner support block group 403 are circumferential
The radian in mutual gap is identical with block itself radian, axial spacing be greater 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 the spiral shell connecting with lower sleeve gasket for bearing drawing, pressure and torsional load, cylinder inside lower end
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 screw 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 present invention mentions, the use process is as follows: in the design of casing string stage,
According to wellbore frictional resistance distribution situation, telescopic sleeve pipe segmentation tool riding position is determined, tool is divided to entire casing string to be upper and lower two
Section, lower section tubing string axially free can stretch with respect to upper section casing string, and tool top connection 1 connects upper section casing, under lower contact 8 connects
Section casing, lower section tubing string antifriction under other technical measures advance, and inner cylinder 6 is stretched out with respect to outer barrel 4, and upper section tubing string leans on
Gravity tripping in, inner cylinder 6 are retracted with respect to outer barrel 4, and upper section casing string can rotate, pull and impact under lower end casing string promotes
Section casing string tripping in, 6 inner support block of outer cylinder and 4 outer support block of inner cylinder can axially bear to hang and push shock loading at this time, from
And 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 passes through outer barrel and connect with lower contact；
Concave-convex keyway is circumferentially set on the outer wall of inner cylinder upper section, on the inner wall of outer barrel lower section circumferentially setting with it is recessed on inner cylinder
The grafting of convex key slot, the inner support block group for stopping cooperation.
2. telescopic setting of casing segmentation tool according to claim 1, it is characterized in that: upper close in the connection of the upper end of inner cylinder
Big envelope, upper sleeve gasket and outer barrel inner wall composition slide axially 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
Outer guiding trough of belt, seal groove are equipped with, and outer guidance tape, sealing ring with outer guiding trough of belt, seal groove cooperation, in upper sleeve gasket
Portion is the limit pin hole with spacer pin cooperation, 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 screw thread connecting with inner cylinder；The lower sleeve gasket inner wall lower is disposed with interior guiding trough of belt, close
Sealing groove, and interior guidance tape, sealing ring with interior guiding trough of belt, seal groove cooperation, lower sleeve gasket outer wall top is and outer barrel
The external screw thread of connection.
4. according to claim 1 or telescopic setting of casing segmentation tool described in 2,3, it is characterized in that: in the recessed of interior cylinder body outer wall
The interval setting road 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；
At the inner support block group interval of outer cylinder inboard wall, the road 1-5 is set.
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: also being 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 connect up and down
It causes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464890.1A CN109973023A (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 |
|---|---|---|---|
| CN201711464890.1A CN109973023A (en) | 2017-12-28 | 2017-12-28 | A kind of telescopic setting of casing segmentation tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109973023A true CN109973023A (en) | 2019-07-05 |
Family
ID=67075152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711464890.1A Pending CN109973023A (en) | 2017-12-28 | 2017-12-28 | A kind of telescopic setting of casing segmentation tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109973023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750551A (en) * | 2022-10-31 | 2023-03-07 | 贵州电网有限责任公司 | Telescopic mutually-embedded knob fixing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201292764Y (en) * | 2008-11-24 | 2009-08-19 | 中国石油集团长城钻探工程有限公司 | Branch downhole sleeve pipe autorotation apparatus |
| CN104594816A (en) * | 2013-11-01 | 2015-05-06 | 中国石油集团渤海钻探工程有限公司油气合作开发分公司 | Stiffness reducing anti-drag device applied to horizontal well completion pipe column |
| CN204571957U (en) * | 2015-01-08 | 2015-08-19 | 中国石油大学(北京) | A kind of horizontal well bore hole pressure break completion tubular column with wellbore trajectory adaptation function |
| CN105696993A (en) * | 2016-01-20 | 2016-06-22 | 中国石油化工股份有限公司 | Tool used for pressure stage differential type spraying-sealing fracturing tool and tubular column comprising same |
| CN107044260A (en) * | 2017-02-22 | 2017-08-15 | 西南石油大学 | Drive casing appliances in a kind of screw drive fully mechanical top |
| CN207944895U (en) * | 2017-12-28 | 2018-10-09 | 中石化石油工程技术服务有限公司 | A kind of telescopic setting of casing segmentation tool |
-
2017
- 2017-12-28 CN CN201711464890.1A patent/CN109973023A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201292764Y (en) * | 2008-11-24 | 2009-08-19 | 中国石油集团长城钻探工程有限公司 | Branch downhole sleeve pipe autorotation apparatus |
| CN104594816A (en) * | 2013-11-01 | 2015-05-06 | 中国石油集团渤海钻探工程有限公司油气合作开发分公司 | Stiffness reducing anti-drag device applied to horizontal well completion pipe column |
| CN204571957U (en) * | 2015-01-08 | 2015-08-19 | 中国石油大学(北京) | A kind of horizontal well bore hole pressure break completion tubular column with wellbore trajectory adaptation function |
| CN105696993A (en) * | 2016-01-20 | 2016-06-22 | 中国石油化工股份有限公司 | Tool used for pressure stage differential type spraying-sealing fracturing tool and tubular column comprising same |
| CN107044260A (en) * | 2017-02-22 | 2017-08-15 | 西南石油大学 | Drive casing appliances in a kind of screw drive fully mechanical top |
| CN207944895U (en) * | 2017-12-28 | 2018-10-09 | 中石化石油工程技术服务有限公司 | A kind of telescopic setting of casing segmentation tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750551A (en) * | 2022-10-31 | 2023-03-07 | 贵州电网有限责任公司 | Telescopic mutually-embedded knob fixing device |
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